{"id":148,"date":"2026-05-11T19:25:11","date_gmt":"2026-05-11T11:25:11","guid":{"rendered":"https:\/\/www.xzqbear.com\/?p=148"},"modified":"2026-05-11T19:28:31","modified_gmt":"2026-05-11T11:28:31","slug":"python-%e8%ae%be%e8%ae%a1%e6%a8%a1%e5%bc%8f-%e5%bb%ba%e9%80%a0%e8%80%85%e6%a8%a1%e5%bc%8f","status":"publish","type":"post","link":"https:\/\/www.xzqbear.com\/index.php\/2026\/05\/11\/python-%e8%ae%be%e8%ae%a1%e6%a8%a1%e5%bc%8f-%e5%bb%ba%e9%80%a0%e8%80%85%e6%a8%a1%e5%bc%8f\/","title":{"rendered":"Python \u8bbe\u8ba1\u6a21\u5f0f \u2014\u2014 \u5efa\u9020\u8005\u6a21\u5f0f"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">\u5efa\u9020\u8005\u6a21\u5f0f\u7684\u6982\u5ff5<\/h2>\n\n\n\n<figure class=\"wp-block-embed is-type-wp-embed\"><div class=\"wp-block-embed__wrapper\">\n<blockquote class=\"wp-embedded-content\" data-secret=\"MLASvgB3yj\"><a href=\"https:\/\/www.xzqbear.com\/index.php\/2026\/05\/10\/python-%e8%ae%be%e8%ae%a1%e6%a8%a1%e5%bc%8f\/\">Python \u8bbe\u8ba1\u6a21\u5f0f \u2014\u2014 \u5de5\u5382\u6a21\u5f0f<\/a><\/blockquote><iframe loading=\"lazy\" class=\"wp-embedded-content\" sandbox=\"allow-scripts\" security=\"restricted\" style=\"position: absolute; visibility: hidden;\" title=\"\u300a Python \u8bbe\u8ba1\u6a21\u5f0f \u2014\u2014 \u5de5\u5382\u6a21\u5f0f \u300b\u2014\u5c0f\u718a\u7684\u5b66\u4e60\u7a7a\u95f4\" src=\"https:\/\/www.xzqbear.com\/index.php\/2026\/05\/10\/python-%e8%ae%be%e8%ae%a1%e6%a8%a1%e5%bc%8f\/embed\/#?secret=DWbJgUITX2#?secret=MLASvgB3yj\" data-secret=\"MLASvgB3yj\" width=\"500\" height=\"282\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\"><\/iframe>\n<\/div><\/figure>\n\n\n\n<p>\u5efa\u9020\u8005\u6a21\u5f0f\u6709\u70b9\u50cf\u5de5\u5382\u6a21\u5f0f\uff0c\u5b83\u7684\u4e3b\u8981\u9762\u5411\u7684\u5bf9\u8c61\u662f\u53c2\u6570\u8f83\u591a\u7684\u5bf9\u8c61\uff0c\u4f8b\u5982\u7edf\u8ba1\u5b66\u5f53\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528\u56de\u5f52\u6a21\u578b\uff0c\u6b64\u65f6\u7684\u53c2\u6570\u53ef\u80fd\u76f8\u5bf9\u8f83\u591a\uff1a<\/p>\n\n\n\n<div class=\"wp-block-kevinbatdorf-code-block-pro cbp-has-line-numbers\" data-code-block-pro-font-family=\"Code-Pro-JetBrains-Mono\" style=\"font-size:.875rem;font-family:Code-Pro-JetBrains-Mono,ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;--cbp-line-number-color:#e1e4e8;--cbp-line-number-width:calc(1 * 0.6 * .875rem);line-height:1.25rem;--cbp-tab-width:2;tab-size:var(--cbp-tab-width, 2)\"><span style=\"display:flex;align-items:center;padding:10px 0px 10px 16px;margin-bottom:-2px;width:100%;text-align:left;background-color:#2f363c;color:#d3d7dd\">Python<\/span><span role=\"button\" tabindex=\"0\" style=\"color:#e1e4e8;display:none\" aria-label=\"\u590d\u5236\" class=\"code-block-pro-copy-button\"><pre class=\"code-block-pro-copy-button-pre\" aria-hidden=\"true\"><textarea class=\"code-block-pro-copy-button-textarea\" tabindex=\"-1\" aria-hidden=\"true\" readonly>class Regressor:\n    def __init__(self):\n        self._model_type = \"ols\"  # \u6a21\u578b\u7c7b\u578b\n        self._fit_intercept = True  # \u622a\u8ddd\u662f\u5426\u62df\u5408\n        self._standardize = False  # \u6807\u51c6\u5316\n        self._alpha = 1.0  # \u6b63\u5219\u5316\u529b\u5ea6\n        self._l1_ratio = 0.5  # l1 \u6bd4\u4f8b\n        self._solver = \"auto\"  # \u6c42\u89e3\u5668\n<\/textarea><\/pre><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" style=\"width:24px;height:24px\" fill=\"none\" viewBox=\"0 0 24 24\" stroke=\"currentColor\" stroke-width=\"2\"><path class=\"with-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2m-6 9l2 2 4-4\"><\/path><path class=\"without-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2\"><\/path><\/svg><\/span><pre class=\"shiki github-dark\" style=\"background-color: #24292e\" tabindex=\"0\"><code><span class=\"line\"><span style=\"color: #F97583\">class<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #B392F0\">Regressor<\/span><span style=\"color: #E1E4E8\">:<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">    <\/span><span style=\"color: #F97583\">def<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #79B8FF\">__init__<\/span><span style=\"color: #E1E4E8\">(self):<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">        <\/span><span style=\"color: #79B8FF\">self<\/span><span style=\"color: #E1E4E8\">._model_type <\/span><span style=\"color: #F97583\">=<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #9ECBFF\">&quot;ols&quot;<\/span><span style=\"color: #E1E4E8\">  <\/span><span style=\"color: #6A737D\"># \u6a21\u578b\u7c7b\u578b<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">        <\/span><span style=\"color: #79B8FF\">self<\/span><span style=\"color: #E1E4E8\">._fit_intercept <\/span><span style=\"color: #F97583\">=<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #79B8FF\">True<\/span><span style=\"color: #E1E4E8\">  <\/span><span style=\"color: #6A737D\"># \u622a\u8ddd\u662f\u5426\u62df\u5408<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">        <\/span><span style=\"color: #79B8FF\">self<\/span><span style=\"color: #E1E4E8\">._standardize <\/span><span style=\"color: #F97583\">=<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #79B8FF\">False<\/span><span style=\"color: #E1E4E8\">  <\/span><span style=\"color: #6A737D\"># \u6807\u51c6\u5316<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">        <\/span><span style=\"color: #79B8FF\">self<\/span><span style=\"color: #E1E4E8\">._alpha <\/span><span style=\"color: #F97583\">=<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #79B8FF\">1.0<\/span><span style=\"color: #E1E4E8\">  <\/span><span style=\"color: #6A737D\"># \u6b63\u5219\u5316\u529b\u5ea6<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">        <\/span><span style=\"color: #79B8FF\">self<\/span><span style=\"color: #E1E4E8\">._l1_ratio <\/span><span style=\"color: #F97583\">=<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #79B8FF\">0.5<\/span><span style=\"color: #E1E4E8\">  <\/span><span style=\"color: #6A737D\"># l1 \u6bd4\u4f8b<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">        <\/span><span style=\"color: #79B8FF\">self<\/span><span style=\"color: #E1E4E8\">._solver <\/span><span style=\"color: #F97583\">=<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #9ECBFF\">&quot;auto&quot;<\/span><span style=\"color: #E1E4E8\">  <\/span><span style=\"color: #6A737D\"># \u6c42\u89e3\u5668<\/span><\/span>\n<span class=\"line\"><\/span><\/code><\/pre><\/div>\n\n\n\n<p>\u6b64\u65f6\u7684\u6a21\u578b\u53c2\u6570\u8f83\u591a\uff0c\u53ef\u80fd\u66f4\u591a\u65f6\u5019\u4f1a\u8fbe\u5230\u51e0\u5341\u4e2a\uff0c\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u4e3a\u4e86\u4f7f\u7528\u7684\u7b80\u4fbf\u6211\u4eec\u5f80\u5f80\u9700\u8981\u56fa\u5b9a\u5176\u4e2d\u67d0\u4e9b\u53c2\u6570\u7ed9\u51fa\u5b50\u7c7b.<\/p>\n\n\n\n<p>\u7b80\u800c\u8a00\u4e4b\uff0c\u5de5\u5382\u6a21\u5f0f\u548c\u5efa\u9020\u8005\u6a21\u5f0f\u7684\u4e3b\u8981\u533a\u522b\u5728\u4e8e\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5de5\u5382\u6a21\u5f0f\u7ed9\u51fa\u7684\u662f\u62bd\u8c61\u57fa\u7c7b\u548c\u5de5\u5382\u7c7b\uff0c\u62bd\u8c61\u57fa\u7c7b\u7684\u5b9e\u73b0\u53ef\u4ee5\u5f88\u7b80\u4fbf\uff0c\u5b50\u7c7b\u53ef\u4ee5\u989d\u5916\u5b9a\u4e49\u5f88\u591a\u65b0\u5185\u5bb9\uff1b<\/li>\n\n\n\n<li>\u5efa\u9020\u8005\u6a21\u5f0f\u7684\u5177\u4f53\u4ea7\u54c1\uff08\u7c7b\uff09\u662f\u521b\u5efa\u6bd4\u8f83\u590d\u6742\uff08\u53c2\u6570\u591a\u3001\u90e8\u4ef6\u591a\uff09\uff0c\u6211\u4eec\u60f3\u5c06\u6784\u5efa\u8fc7\u7a0b\u548c\u8868\u793a\u8fc7\u7a0b\uff08\u7ed9\u5165\u53c2\u6570\u7684\u8fc7\u7a0b\uff09\u5206\u79bb\uff1b<\/li>\n<\/ul>\n\n\n\n<p>\u4e3e\u4e2a\u4f8b\u5b50\u5c31\u662f\uff0c\u5de5\u5382\u6a21\u5f0f\u4e3b\u8981\u89e3\u51b3\u7684\u95ee\u9898\u662f\uff1a\u6211\u4eec\u6709\u201c\u7535\u5b50\u4ea7\u54c1\u201d\u8fd9\u7c7b\u57fa\u7c7b\u3002\u7136\u540e\u60f3\u6d3e\u751f\u51fa\u7535\u8111\u3001\u624b\u673a\u7b49\u5177\u4f53\u7269\u4ef6\uff1b\u5efa\u9020\u8005\u6a21\u5f0f\u5219\u662f\u5df2\u7ecf\u6709\u4e86\u7535\u8111\u7684\u6982\u5ff5\uff0c\u540c\u65f6\u5185\u90e8\u7684\u5404\u4e2a\u90e8\u4ef6\u90fd\u5f88\u590d\u6742\uff0c\u9700\u8981\u5355\u72ec\u5206\u79bb\u51fa\u6e38\u620f\u7535\u8111\u3001\u529e\u516c\u7535\u8111\u7b49\u7ec6\u5206\u573a\u666f.<\/p>\n\n\n\n<p>\u4e0b\u9762\u662f\u5efa\u9020\u8005\u6a21\u5f0f\u7684\u4e3b\u8981\u6d41\u7a0b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"2560\" height=\"255\" src=\"https:\/\/www.xzqbear.com\/wp-content\/uploads\/2026\/05\/\u5efa\u9020\u8005\u6a21\u5f0f-scaled.png\" alt=\"\u5efa\u9020\u8005\u6a21\u5f0f\u56fe\" class=\"wp-image-152\" style=\"aspect-ratio:10.038671740737785;width:735px;height:auto\" srcset=\"https:\/\/www.xzqbear.com\/wp-content\/uploads\/2026\/05\/\u5efa\u9020\u8005\u6a21\u5f0f-scaled.png 2560w, https:\/\/www.xzqbear.com\/wp-content\/uploads\/2026\/05\/\u5efa\u9020\u8005\u6a21\u5f0f-300x30.png 300w, https:\/\/www.xzqbear.com\/wp-content\/uploads\/2026\/05\/\u5efa\u9020\u8005\u6a21\u5f0f-1024x102.png 1024w, https:\/\/www.xzqbear.com\/wp-content\/uploads\/2026\/05\/\u5efa\u9020\u8005\u6a21\u5f0f-768x76.png 768w, https:\/\/www.xzqbear.com\/wp-content\/uploads\/2026\/05\/\u5efa\u9020\u8005\u6a21\u5f0f-1536x153.png 1536w, https:\/\/www.xzqbear.com\/wp-content\/uploads\/2026\/05\/\u5efa\u9020\u8005\u6a21\u5f0f-2048x204.png 2048w\" sizes=\"auto, (max-width: 2560px) 100vw, 2560px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Python \u5b9e\u73b0<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u5177\u4f53\u4ea7\u54c1<\/h3>\n\n\n\n<p>\u4e00\u4e2a\u5177\u4f53\u7684\u56de\u5f52\u5668\u53ef\u4ee5\u8fd9\u4e48\u5199\uff1a<\/p>\n\n\n\n<div class=\"wp-block-kevinbatdorf-code-block-pro cbp-has-line-numbers\" data-code-block-pro-font-family=\"Code-Pro-JetBrains-Mono\" style=\"font-size:.875rem;font-family:Code-Pro-JetBrains-Mono,ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;--cbp-line-number-color:#e1e4e8;--cbp-line-number-width:calc(2 * 0.6 * .875rem);line-height:1.25rem;--cbp-tab-width:2;tab-size:var(--cbp-tab-width, 2)\"><span style=\"display:flex;align-items:center;padding:10px 0px 10px 16px;margin-bottom:-2px;width:100%;text-align:left;background-color:#2f363c;color:#d3d7dd\">Python<\/span><span role=\"button\" tabindex=\"0\" style=\"color:#e1e4e8;display:none\" aria-label=\"\u590d\u5236\" class=\"code-block-pro-copy-button\"><pre class=\"code-block-pro-copy-button-pre\" aria-hidden=\"true\"><textarea class=\"code-block-pro-copy-button-textarea\" tabindex=\"-1\" aria-hidden=\"true\" readonly>class Regressor:\n    def __init__(self):\n        self._model_type = \"ols\"  # \u6a21\u578b\u7c7b\u578b\n        self._fit_intercept = True  # \u622a\u8ddd\u662f\u5426\u62df\u5408\n        self._standardize = False  # \u6807\u51c6\u5316\n        self._alpha = 1.0  # \u6b63\u5219\u5316\u529b\u5ea6\n        self._l1_ratio = 0.5  # l1 \u6bd4\u4f8b\n        self._solver = \"auto\"  # \u6c42\u89e3\u5668\n\n    def __str__(self) -> str:\n        specs: dict = {}\n        if self._model_type:\n            specs&#91;\"\u6a21\u578b\u7c7b\u578b\"&#93; = self._model_type\n        if self._fit_intercept:\n            specs&#91;\"\u662f\u5426\u62df\u5408\u622a\u8ddd\"&#93; = self._fit_intercept\n        if self._standardize:\n            specs&#91;\"\u662f\u5426\u6807\u51c6\u5316\"&#93; = self._standardize\n        if self._alpha:\n            specs&#91;\"\u6b63\u5219\u5316\u529b\u5ea6\"&#93; = self._alpha\n        if self._l1_ratio:\n            specs&#91;\"L1 \u7cfb\u6570\"&#93; = self._l1_ratio\n        if self._solver:\n            specs&#91;\"\u6c42\u89e3\u5668\"&#93; = self._solver\n\n        return \"\u6a21\u578b\u4fe1\u606f\uff1a\\n\" + \"\\n\".join(\n            [f\"{key}: {specs&#91;key&#93;}\" for key in specs.keys()]\n        )\n<\/textarea><\/pre><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" style=\"width:24px;height:24px\" fill=\"none\" viewBox=\"0 0 24 24\" stroke=\"currentColor\" stroke-width=\"2\"><path class=\"with-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2m-6 9l2 2 4-4\"><\/path><path class=\"without-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2\"><\/path><\/svg><\/span><pre class=\"shiki github-dark\" style=\"background-color: #24292e\" tabindex=\"0\"><code><span class=\"line\"><span style=\"color: #F97583\">class<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #B392F0\">Regressor<\/span><span style=\"color: #E1E4E8\">:<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">    <\/span><span style=\"color: #F97583\">def<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #79B8FF\">__init__<\/span><span style=\"color: #E1E4E8\">(self):<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">        <\/span><span style=\"color: #79B8FF\">self<\/span><span style=\"color: #E1E4E8\">._model_type <\/span><span style=\"color: #F97583\">=<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #9ECBFF\">&quot;ols&quot;<\/span><span style=\"color: #E1E4E8\">  <\/span><span style=\"color: #6A737D\"># \u6a21\u578b\u7c7b\u578b<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">        <\/span><span style=\"color: #79B8FF\">self<\/span><span style=\"color: #E1E4E8\">._fit_intercept <\/span><span style=\"color: #F97583\">=<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #79B8FF\">True<\/span><span style=\"color: #E1E4E8\">  <\/span><span style=\"color: #6A737D\"># \u622a\u8ddd\u662f\u5426\u62df\u5408<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">        <\/span><span style=\"color: #79B8FF\">self<\/span><span style=\"color: #E1E4E8\">._standardize <\/span><span style=\"color: #F97583\">=<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #79B8FF\">False<\/span><span style=\"color: #E1E4E8\">  <\/span><span style=\"color: #6A737D\"># \u6807\u51c6\u5316<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">        <\/span><span style=\"color: #79B8FF\">self<\/span><span style=\"color: #E1E4E8\">._alpha <\/span><span style=\"color: #F97583\">=<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #79B8FF\">1.0<\/span><span style=\"color: #E1E4E8\">  <\/span><span style=\"color: #6A737D\"># \u6b63\u5219\u5316\u529b\u5ea6<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">        <\/span><span style=\"color: #79B8FF\">self<\/span><span style=\"color: #E1E4E8\">._l1_ratio <\/span><span style=\"color: #F97583\">=<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #79B8FF\">0.5<\/span><span style=\"color: #E1E4E8\">  <\/span><span style=\"color: #6A737D\"># l1 \u6bd4\u4f8b<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">        <\/span><span style=\"color: #79B8FF\">self<\/span><span style=\"color: #E1E4E8\">._solver <\/span><span style=\"color: #F97583\">=<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #9ECBFF\">&quot;auto&quot;<\/span><span style=\"color: #E1E4E8\">  <\/span><span style=\"color: #6A737D\"># \u6c42\u89e3\u5668<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">    <\/span><span style=\"color: #F97583\">def<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #79B8FF\">__str__<\/span><span style=\"color: #E1E4E8\">(self) -&gt; <\/span><span style=\"color: #79B8FF\">str<\/span><span style=\"color: #E1E4E8\">:<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">        specs: <\/span><span style=\"color: #79B8FF\">dict<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #F97583\">=<\/span><span style=\"color: #E1E4E8\"> {}<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">        <\/span><span style=\"color: #F97583\">if<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #79B8FF\">self<\/span><span style=\"color: #E1E4E8\">._model_type:<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">            specs&#91;<\/span><span style=\"color: #9ECBFF\">&quot;\u6a21\u578b\u7c7b\u578b&quot;<\/span><span style=\"color: #E1E4E8\">&#93; <\/span><span style=\"color: #F97583\">=<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #79B8FF\">self<\/span><span style=\"color: #E1E4E8\">._model_type<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">        <\/span><span style=\"color: #F97583\">if<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #79B8FF\">self<\/span><span style=\"color: #E1E4E8\">._fit_intercept:<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">            specs&#91;<\/span><span style=\"color: #9ECBFF\">&quot;\u662f\u5426\u62df\u5408\u622a\u8ddd&quot;<\/span><span style=\"color: #E1E4E8\">&#93; <\/span><span style=\"color: #F97583\">=<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #79B8FF\">self<\/span><span style=\"color: #E1E4E8\">._fit_intercept<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">        <\/span><span style=\"color: #F97583\">if<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #79B8FF\">self<\/span><span style=\"color: #E1E4E8\">._standardize:<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">            specs&#91;<\/span><span style=\"color: #9ECBFF\">&quot;\u662f\u5426\u6807\u51c6\u5316&quot;<\/span><span style=\"color: #E1E4E8\">&#93; <\/span><span style=\"color: #F97583\">=<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #79B8FF\">self<\/span><span style=\"color: #E1E4E8\">._standardize<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">        <\/span><span style=\"color: #F97583\">if<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #79B8FF\">self<\/span><span style=\"color: #E1E4E8\">._alpha:<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">            specs&#91;<\/span><span style=\"color: #9ECBFF\">&quot;\u6b63\u5219\u5316\u529b\u5ea6&quot;<\/span><span style=\"color: #E1E4E8\">&#93; <\/span><span style=\"color: #F97583\">=<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #79B8FF\">self<\/span><span style=\"color: #E1E4E8\">._alpha<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">        <\/span><span style=\"color: #F97583\">if<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #79B8FF\">self<\/span><span style=\"color: #E1E4E8\">._l1_ratio:<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">            specs&#91;<\/span><span style=\"color: #9ECBFF\">&quot;L1 \u7cfb\u6570&quot;<\/span><span style=\"color: #E1E4E8\">&#93; <\/span><span style=\"color: #F97583\">=<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #79B8FF\">self<\/span><span style=\"color: #E1E4E8\">._l1_ratio<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">        <\/span><span style=\"color: #F97583\">if<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #79B8FF\">self<\/span><span style=\"color: #E1E4E8\">._solver:<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">            specs&#91;<\/span><span style=\"color: #9ECBFF\">&quot;\u6c42\u89e3\u5668&quot;<\/span><span style=\"color: #E1E4E8\">&#93; <\/span><span style=\"color: #F97583\">=<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #79B8FF\">self<\/span><span style=\"color: #E1E4E8\">._solver<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">        <\/span><span style=\"color: #F97583\">return<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #9ECBFF\">&quot;\u6a21\u578b\u4fe1\u606f\uff1a<\/span><span style=\"color: #79B8FF\">\\n<\/span><span style=\"color: #9ECBFF\">&quot;<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #F97583\">+<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #9ECBFF\">&quot;<\/span><span style=\"color: #79B8FF\">\\n<\/span><span style=\"color: #9ECBFF\">&quot;<\/span><span style=\"color: #E1E4E8\">.join(<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">            [<\/span><span style=\"color: #F97583\">f<\/span><span style=\"color: #9ECBFF\">&quot;<\/span><span style=\"color: #79B8FF\">{<\/span><span style=\"color: #E1E4E8\">key<\/span><span style=\"color: #79B8FF\">}<\/span><span style=\"color: #9ECBFF\">: <\/span><span style=\"color: #79B8FF\">{<\/span><span style=\"color: #E1E4E8\">specs&#91;key&#93;<\/span><span style=\"color: #79B8FF\">}<\/span><span style=\"color: #9ECBFF\">&quot;<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #F97583\">for<\/span><span style=\"color: #E1E4E8\"> key <\/span><span style=\"color: #F97583\">in<\/span><span style=\"color: #E1E4E8\"> specs.keys()]<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">        )<\/span><\/span>\n<span class=\"line\"><\/span><\/code><\/pre><\/div>\n\n\n\n<p>\u6211\u4eec\u63a5\u4e0b\u6765\u7684\u60f3\u6cd5\u662f\uff1a\u5b9e\u73b0 LASSO \u56de\u5f52\u548c\u4e00\u822c\u7ebf\u6027\u56de\u5f52\uff0c\u90a3\u4e48\u6b64\u65f6\u5176\u5b9e\u53ea\u8981\u56fa\u5b9a\u5176\u4e2d\u51e0\u4e2a\u53c2\u6570\u5373\u53ef\uff0c\u56e0\u6b64\u4f7f\u7528\u7684\u5c31\u662f\u5efa\u9020\u8005\u6a21\u5f0f.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u62bd\u8c61\u5efa\u9020\u8005<\/h3>\n\n\n\n<p>\u5bf9\u4e8e\u62bd\u8c61\u5efa\u9020\u8005\uff0c\u5176\u5b9e\u4e3b\u8981\u7684\u65b9\u6cd5\u5c31\u662f\u9009\u5b9a\u51e0\u4e2a\u53c2\u6570\u7684\u65b9\u6cd5\uff0c\u6ce8\u610f\u521d\u59cb\u5316\u7684\u65f6\u5019\u8981\u7ed9\u51fa <code>Regressor()<\/code> \u7684\u5b9e\u4f8b.<\/p>\n\n\n\n<div class=\"wp-block-kevinbatdorf-code-block-pro cbp-has-line-numbers\" data-code-block-pro-font-family=\"Code-Pro-JetBrains-Mono\" style=\"font-size:.875rem;font-family:Code-Pro-JetBrains-Mono,ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;--cbp-line-number-color:#e1e4e8;--cbp-line-number-width:calc(2 * 0.6 * .875rem);line-height:1.25rem;--cbp-tab-width:2;tab-size:var(--cbp-tab-width, 2)\"><span style=\"display:flex;align-items:center;padding:10px 0px 10px 16px;margin-bottom:-2px;width:100%;text-align:left;background-color:#2f363c;color:#d3d7dd\">Python<\/span><span role=\"button\" tabindex=\"0\" style=\"color:#e1e4e8;display:none\" aria-label=\"\u590d\u5236\" class=\"code-block-pro-copy-button\"><pre class=\"code-block-pro-copy-button-pre\" aria-hidden=\"true\"><textarea class=\"code-block-pro-copy-button-textarea\" tabindex=\"-1\" aria-hidden=\"true\" readonly>from abc import ABC, abstractmethod\nclass RegressorBuilder(ABC):\n    def __init__(self):\n        self.regressor = Regressor()\n\n    @abstractmethod\n    def select_type(self):\n        pass\n\n    @abstractmethod\n    def select_fit_intercept(self):\n        pass\n\n    @abstractmethod\n    def select_alpha(self):\n        pass\n\n    @abstractmethod\n    def select_l1_ratio(self):\n        pass\n\n    @abstractmethod\n    def select_solver(self):\n        pass\n\n    def get_regressor(self) -> Regressor:\n        return self.regressor\n<\/textarea><\/pre><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" style=\"width:24px;height:24px\" fill=\"none\" viewBox=\"0 0 24 24\" stroke=\"currentColor\" stroke-width=\"2\"><path class=\"with-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2m-6 9l2 2 4-4\"><\/path><path class=\"without-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2\"><\/path><\/svg><\/span><pre class=\"shiki github-dark\" style=\"background-color: #24292e\" tabindex=\"0\"><code><span class=\"line\"><span style=\"color: #F97583\">from<\/span><span style=\"color: #E1E4E8\"> abc <\/span><span style=\"color: #F97583\">import<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #79B8FF\">ABC<\/span><span style=\"color: #E1E4E8\">, abstractmethod<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F97583\">class<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #B392F0\">RegressorBuilder<\/span><span style=\"color: #E1E4E8\">(<\/span><span style=\"color: #79B8FF\">ABC<\/span><span style=\"color: #E1E4E8\">):<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">    <\/span><span style=\"color: #F97583\">def<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #79B8FF\">__init__<\/span><span style=\"color: #E1E4E8\">(self):<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">        <\/span><span style=\"color: #79B8FF\">self<\/span><span style=\"color: #E1E4E8\">.regressor <\/span><span style=\"color: #F97583\">=<\/span><span style=\"color: #E1E4E8\"> Regressor()<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">    <\/span><span style=\"color: #B392F0\">@abstractmethod<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">    <\/span><span style=\"color: #F97583\">def<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #B392F0\">select_type<\/span><span style=\"color: #E1E4E8\">(self):<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">        <\/span><span style=\"color: #F97583\">pass<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">    <\/span><span style=\"color: #B392F0\">@abstractmethod<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">    <\/span><span style=\"color: #F97583\">def<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #B392F0\">select_fit_intercept<\/span><span style=\"color: #E1E4E8\">(self):<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">        <\/span><span style=\"color: #F97583\">pass<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">    <\/span><span style=\"color: #B392F0\">@abstractmethod<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">    <\/span><span style=\"color: #F97583\">def<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #B392F0\">select_alpha<\/span><span style=\"color: #E1E4E8\">(self):<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">        <\/span><span style=\"color: #F97583\">pass<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">    <\/span><span style=\"color: #B392F0\">@abstractmethod<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">    <\/span><span style=\"color: #F97583\">def<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #B392F0\">select_l1_ratio<\/span><span style=\"color: #E1E4E8\">(self):<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">        <\/span><span style=\"color: #F97583\">pass<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">    <\/span><span style=\"color: #B392F0\">@abstractmethod<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">    <\/span><span style=\"color: #F97583\">def<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #B392F0\">select_solver<\/span><span style=\"color: #E1E4E8\">(self):<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">        <\/span><span style=\"color: #F97583\">pass<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">    <\/span><span style=\"color: #F97583\">def<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #B392F0\">get_regressor<\/span><span style=\"color: #E1E4E8\">(self) -&gt; Regressor:<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">        <\/span><span style=\"color: #F97583\">return<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #79B8FF\">self<\/span><span style=\"color: #E1E4E8\">.regressor<\/span><\/span>\n<span class=\"line\"><\/span><\/code><\/pre><\/div>\n\n\n\n<h3 class=\"wp-block-heading\">\u5177\u4f53\u5efa\u9020\u8005<\/h3>\n\n\n\n<p>\u6211\u4eec\u4ee5 LASSO \u4e3a\u4f8b\uff0c\u6b64\u65f6\u56fa\u5b9a\u4e86\u6b63\u5219\u5316\u529b\u5ea6\u548c\u60e9\u7f5a\u53c2\u6570\uff0c\u56e0\u6b64\u53ef\u4ee5\u5199\u6e05\u695a\u6bcf\u4e00\u4e2a\u5177\u4f53\u7684\u53c2\u6570\uff1a<\/p>\n\n\n\n<div class=\"wp-block-kevinbatdorf-code-block-pro cbp-has-line-numbers\" data-code-block-pro-font-family=\"Code-Pro-JetBrains-Mono\" style=\"font-size:.875rem;font-family:Code-Pro-JetBrains-Mono,ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;--cbp-line-number-color:#e1e4e8;--cbp-line-number-width:calc(2 * 0.6 * .875rem);line-height:1.25rem;--cbp-tab-width:2;tab-size:var(--cbp-tab-width, 2)\"><span style=\"display:flex;align-items:center;padding:10px 0px 10px 16px;margin-bottom:-2px;width:100%;text-align:left;background-color:#2f363c;color:#d3d7dd\">Python<\/span><span role=\"button\" tabindex=\"0\" style=\"color:#e1e4e8;display:none\" aria-label=\"\u590d\u5236\" class=\"code-block-pro-copy-button\"><pre class=\"code-block-pro-copy-button-pre\" aria-hidden=\"true\"><textarea class=\"code-block-pro-copy-button-textarea\" tabindex=\"-1\" aria-hidden=\"true\" readonly>class LassoRegressorBuilder(RegressorBuilder):\n    def select_type(self):\n        self.regressor._model_type = \"lasso\"\n\n    def select_fit_intercept(self):\n        self.regressor._fit_intercept = True\n\n    def select_alpha(self):\n        self.regressor._alpha = 1.0\n\n    def select_l1_ratio(self):\n        self.regressor._l1_ratio = 1.0\n\n    def select_solver(self):\n        self.regressor._solver = \"auto\"\n<\/textarea><\/pre><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" style=\"width:24px;height:24px\" fill=\"none\" viewBox=\"0 0 24 24\" stroke=\"currentColor\" stroke-width=\"2\"><path class=\"with-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2m-6 9l2 2 4-4\"><\/path><path class=\"without-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2\"><\/path><\/svg><\/span><pre class=\"shiki github-dark\" style=\"background-color: #24292e\" tabindex=\"0\"><code><span class=\"line\"><span style=\"color: #F97583\">class<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #B392F0\">LassoRegressorBuilder<\/span><span style=\"color: #E1E4E8\">(<\/span><span style=\"color: #B392F0\">RegressorBuilder<\/span><span style=\"color: #E1E4E8\">):<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">    <\/span><span style=\"color: #F97583\">def<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #B392F0\">select_type<\/span><span style=\"color: #E1E4E8\">(self):<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">        <\/span><span style=\"color: #79B8FF\">self<\/span><span style=\"color: #E1E4E8\">.regressor._model_type <\/span><span style=\"color: #F97583\">=<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #9ECBFF\">&quot;lasso&quot;<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">    <\/span><span style=\"color: #F97583\">def<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #B392F0\">select_fit_intercept<\/span><span style=\"color: #E1E4E8\">(self):<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">        <\/span><span style=\"color: #79B8FF\">self<\/span><span style=\"color: #E1E4E8\">.regressor._fit_intercept <\/span><span style=\"color: #F97583\">=<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #79B8FF\">True<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">    <\/span><span style=\"color: #F97583\">def<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #B392F0\">select_alpha<\/span><span style=\"color: #E1E4E8\">(self):<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">        <\/span><span style=\"color: #79B8FF\">self<\/span><span style=\"color: #E1E4E8\">.regressor._alpha <\/span><span style=\"color: #F97583\">=<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #79B8FF\">1.0<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">    <\/span><span style=\"color: #F97583\">def<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #B392F0\">select_l1_ratio<\/span><span style=\"color: #E1E4E8\">(self):<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">        <\/span><span style=\"color: #79B8FF\">self<\/span><span style=\"color: #E1E4E8\">.regressor._l1_ratio <\/span><span style=\"color: #F97583\">=<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #79B8FF\">1.0<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">    <\/span><span style=\"color: #F97583\">def<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #B392F0\">select_solver<\/span><span style=\"color: #E1E4E8\">(self):<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">        <\/span><span style=\"color: #79B8FF\">self<\/span><span style=\"color: #E1E4E8\">.regressor._solver <\/span><span style=\"color: #F97583\">=<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #9ECBFF\">&quot;auto&quot;<\/span><\/span>\n<span class=\"line\"><\/span><\/code><\/pre><\/div>\n\n\n\n<h3 class=\"wp-block-heading\">\u6307\u6325\u8005<\/h3>\n\n\n\n<p>\u5982\u679c\u76f4\u63a5\u4f7f\u7528\u4e0a\u8ff0\u7684\u5efa\u9020\u8005\uff0c\u6211\u4eec\u8fd9\u4e9b\u9009\u5b9a\u7684\u65b9\u6cd5\u5c31\u6bcf\u6b21\u90fd\u8981\u4e00\u884c\u884c\u6267\u884c\uff0c\u5f88\u9ebb\u70e6\uff0c\u56e0\u6b64\u6307\u6325\u8005\u7684\u4e3b\u8981\u4f5c\u7528\u5c31\u662f\u4e0d\u7ba1\u5177\u4f53\u5efa\u9020\u8005\u662f\u8c01\uff0c\u90fd\u4f9d\u6b21\u8c03\u7528\u76f8\u5e94\u7684\u65b9\u6cd5.<\/p>\n\n\n\n<div class=\"wp-block-kevinbatdorf-code-block-pro cbp-has-line-numbers\" data-code-block-pro-font-family=\"Code-Pro-JetBrains-Mono\" style=\"font-size:.875rem;font-family:Code-Pro-JetBrains-Mono,ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;--cbp-line-number-color:#e1e4e8;--cbp-line-number-width:calc(2 * 0.6 * .875rem);line-height:1.25rem;--cbp-tab-width:2;tab-size:var(--cbp-tab-width, 2)\"><span style=\"display:flex;align-items:center;padding:10px 0px 10px 16px;margin-bottom:-2px;width:100%;text-align:left;background-color:#2f363c;color:#d3d7dd\">Python<\/span><span role=\"button\" tabindex=\"0\" style=\"color:#e1e4e8;display:none\" aria-label=\"\u590d\u5236\" class=\"code-block-pro-copy-button\"><pre class=\"code-block-pro-copy-button-pre\" aria-hidden=\"true\"><textarea class=\"code-block-pro-copy-button-textarea\" tabindex=\"-1\" aria-hidden=\"true\" readonly>class RegressorDirector:\n    \"\"\"\u56de\u5f52\u5668\u6307\u6325\u8005\"\"\"\n\n    def __init__(self, builder: RegressorBuilder):\n        self.builder: RegressorBuilder = builder\n\n    def construct_regressor(self):\n        \"\"\"\u6784\u5efa\u56de\u5f52\u6a21\u578b\u7684\u5b8c\u6574\u8fc7\u7a0b\"\"\"\n        self.builder.select_alpha()\n        self.builder.select_fit_intercept()\n        self.builder.select_l1_ratio()\n        self.builder.select_solver()\n        self.builder.select_type()\n\n    def get_regressor(self) -> Regressor:\n        return self.builder.get_regressor()\n<\/textarea><\/pre><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" style=\"width:24px;height:24px\" fill=\"none\" viewBox=\"0 0 24 24\" stroke=\"currentColor\" stroke-width=\"2\"><path class=\"with-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2m-6 9l2 2 4-4\"><\/path><path class=\"without-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2\"><\/path><\/svg><\/span><pre class=\"shiki github-dark\" style=\"background-color: #24292e\" tabindex=\"0\"><code><span class=\"line\"><span style=\"color: #F97583\">class<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #B392F0\">RegressorDirector<\/span><span style=\"color: #E1E4E8\">:<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">    <\/span><span style=\"color: #9ECBFF\">&quot;&quot;&quot;\u56de\u5f52\u5668\u6307\u6325\u8005&quot;&quot;&quot;<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">    <\/span><span style=\"color: #F97583\">def<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #79B8FF\">__init__<\/span><span style=\"color: #E1E4E8\">(self, builder: RegressorBuilder):<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">        <\/span><span style=\"color: #79B8FF\">self<\/span><span style=\"color: #E1E4E8\">.builder: RegressorBuilder <\/span><span style=\"color: #F97583\">=<\/span><span style=\"color: #E1E4E8\"> builder<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">    <\/span><span style=\"color: #F97583\">def<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #B392F0\">construct_regressor<\/span><span style=\"color: #E1E4E8\">(self):<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">        <\/span><span style=\"color: #9ECBFF\">&quot;&quot;&quot;\u6784\u5efa\u56de\u5f52\u6a21\u578b\u7684\u5b8c\u6574\u8fc7\u7a0b&quot;&quot;&quot;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">        <\/span><span style=\"color: #79B8FF\">self<\/span><span style=\"color: #E1E4E8\">.builder.select_alpha()<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">        <\/span><span style=\"color: #79B8FF\">self<\/span><span style=\"color: #E1E4E8\">.builder.select_fit_intercept()<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">        <\/span><span style=\"color: #79B8FF\">self<\/span><span style=\"color: #E1E4E8\">.builder.select_l1_ratio()<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">        <\/span><span style=\"color: #79B8FF\">self<\/span><span style=\"color: #E1E4E8\">.builder.select_solver()<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">        <\/span><span style=\"color: #79B8FF\">self<\/span><span style=\"color: #E1E4E8\">.builder.select_type()<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">    <\/span><span style=\"color: #F97583\">def<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #B392F0\">get_regressor<\/span><span style=\"color: #E1E4E8\">(self) -&gt; Regressor:<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">        <\/span><span style=\"color: #F97583\">return<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #79B8FF\">self<\/span><span style=\"color: #E1E4E8\">.builder.get_regressor()<\/span><\/span>\n<span class=\"line\"><\/span><\/code><\/pre><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">\u4ee3\u7801\u7684\u5168\u90e8\u5b9e\u73b0<\/h2>\n\n\n\n<div class=\"wp-block-kevinbatdorf-code-block-pro cbp-has-line-numbers\" data-code-block-pro-font-family=\"Code-Pro-JetBrains-Mono\" style=\"font-size:.875rem;font-family:Code-Pro-JetBrains-Mono,ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;--cbp-line-number-color:#e1e4e8;--cbp-line-number-width:calc(3 * 0.6 * .875rem);line-height:1.25rem;--cbp-tab-width:2;tab-size:var(--cbp-tab-width, 2)\"><span style=\"display:flex;align-items:center;padding:10px 0px 10px 16px;margin-bottom:-2px;width:100%;text-align:left;background-color:#2f363c;color:#d3d7dd\">Python<\/span><span role=\"button\" tabindex=\"0\" style=\"color:#e1e4e8;display:none\" aria-label=\"\u590d\u5236\" class=\"code-block-pro-copy-button\"><pre class=\"code-block-pro-copy-button-pre\" aria-hidden=\"true\"><textarea class=\"code-block-pro-copy-button-textarea\" tabindex=\"-1\" aria-hidden=\"true\" readonly># \u5efa\u9020\u8005\u6a21\u5f0f\n\n# 1. \u4ea7\u54c1\u7c7b (\u56de\u5f52\u6a21\u578b)\nfrom abc import ABC, abstractmethod\n\n\nclass Regressor:\n    def __init__(self):\n        self._model_type = \"ols\"  # \u6a21\u578b\u7c7b\u578b\n        self._fit_intercept = True  # \u622a\u8ddd\u662f\u5426\u62df\u5408\n        self._standardize = False  # \u6807\u51c6\u5316\n        self._alpha = 1.0  # \u6b63\u5219\u5316\u529b\u5ea6\n        self._l1_ratio = 0.5  # l1 \u6bd4\u4f8b\n        self._solver = \"auto\"  # \u6c42\u89e3\u5668\n\n    def __str__(self) -> str:\n        specs: dict = {}\n        if self._model_type:\n            specs&#91;\"\u6a21\u578b\u7c7b\u578b\"&#93; = self._model_type\n        if self._fit_intercept:\n            specs&#91;\"\u662f\u5426\u62df\u5408\u622a\u8ddd\"&#93; = self._fit_intercept\n        if self._standardize:\n            specs&#91;\"\u662f\u5426\u6807\u51c6\u5316\"&#93; = self._standardize\n        if self._alpha:\n            specs&#91;\"\u6b63\u5219\u5316\u529b\u5ea6\"&#93; = self._alpha\n        if self._l1_ratio:\n            specs&#91;\"L1 \u7cfb\u6570\"&#93; = self._l1_ratio\n        if self._solver:\n            specs&#91;\"\u6c42\u89e3\u5668\"&#93; = self._solver\n\n        return \"\u6a21\u578b\u4fe1\u606f\uff1a\\n\" + \"\\n\".join(\n            [f\"{key}: {specs&#91;key&#93;}\" for key in specs.keys()]\n        )\n\n# 2. \u62bd\u8c61\u5efa\u9020\u8005\nclass RegressorBuilder(ABC):\n    def __init__(self):\n        self.regressor = Regressor()\n\n    @abstractmethod\n    def select_type(self):\n        pass\n\n    @abstractmethod\n    def select_fit_intercept(self):\n        pass\n\n    @abstractmethod\n    def select_alpha(self):\n        pass\n\n    @abstractmethod\n    def select_l1_ratio(self):\n        pass\n\n    @abstractmethod\n    def select_solver(self):\n        pass\n\n    def get_regressor(self) -> Regressor:\n        return self.regressor\n\n# 3. \u5177\u4f53\u5efa\u9020\u8005\nclass LinearRegressorBuilder(RegressorBuilder):\n    def select_type(self):\n        self.regressor._model_type = \"ols\"\n\n    def select_fit_intercept(self):\n        self.regressor._fit_intercept = True\n\n    def select_alpha(self):\n        self.regressor._alpha = 0.0\n\n    def select_l1_ratio(self):\n        self.regressor._l1_ratio = 0.0\n\n    def select_solver(self):\n        self.regressor._solver = \"auto\"\n\n\nclass LassoRegressorBuilder(RegressorBuilder):\n    def select_type(self):\n        self.regressor._model_type = \"lasso\"\n\n    def select_fit_intercept(self):\n        self.regressor._fit_intercept = True\n\n    def select_alpha(self):\n        self.regressor._alpha = 1.0\n\n    def select_l1_ratio(self):\n        self.regressor._l1_ratio = 1.0\n\n    def select_solver(self):\n        self.regressor._solver = \"auto\"\n\n# 4. \u6307\u6325\u8005\nclass RegressorDirector:\n    \"\"\"\u56de\u5f52\u5668\u6307\u6325\u8005\"\"\"\n\n    def __init__(self, builder: RegressorBuilder):\n        self.builder: RegressorBuilder = builder\n\n    def construct_regressor(self):\n        \"\"\"\u6784\u5efa\u56de\u5f52\u6a21\u578b\u7684\u5b8c\u6574\u8fc7\u7a0b\"\"\"\n        self.builder.select_alpha()\n        self.builder.select_fit_intercept()\n        self.builder.select_l1_ratio()\n        self.builder.select_solver()\n        self.builder.select_type()\n\n    def get_regressor(self) -> Regressor:\n        return self.builder.get_regressor()\n\n\n# \u6784\u5efa LASSO \u6a21\u578b\nlasso_builder = LassoRegressorBuilder()\nlasso_director = RegressorDirector(lasso_builder)\nlasso_director.construct_regressor()\nlasso: Regressor = lasso_director.get_regressor()\nprint(lasso)\n<\/textarea><\/pre><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" style=\"width:24px;height:24px\" fill=\"none\" viewBox=\"0 0 24 24\" stroke=\"currentColor\" stroke-width=\"2\"><path class=\"with-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2m-6 9l2 2 4-4\"><\/path><path class=\"without-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2\"><\/path><\/svg><\/span><pre class=\"shiki github-dark\" style=\"background-color: #24292e\" tabindex=\"0\"><code><span class=\"line\"><span style=\"color: #6A737D\"># \u5efa\u9020\u8005\u6a21\u5f0f<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #6A737D\"># 1. \u4ea7\u54c1\u7c7b (\u56de\u5f52\u6a21\u578b)<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F97583\">from<\/span><span style=\"color: #E1E4E8\"> abc <\/span><span style=\"color: #F97583\">import<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #79B8FF\">ABC<\/span><span style=\"color: #E1E4E8\">, abstractmethod<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #F97583\">class<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #B392F0\">Regressor<\/span><span style=\"color: #E1E4E8\">:<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">    <\/span><span style=\"color: #F97583\">def<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #79B8FF\">__init__<\/span><span style=\"color: #E1E4E8\">(self):<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">        <\/span><span style=\"color: #79B8FF\">self<\/span><span style=\"color: #E1E4E8\">._model_type <\/span><span style=\"color: #F97583\">=<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #9ECBFF\">&quot;ols&quot;<\/span><span style=\"color: #E1E4E8\">  <\/span><span style=\"color: #6A737D\"># \u6a21\u578b\u7c7b\u578b<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">        <\/span><span style=\"color: #79B8FF\">self<\/span><span style=\"color: #E1E4E8\">._fit_intercept <\/span><span style=\"color: #F97583\">=<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #79B8FF\">True<\/span><span style=\"color: #E1E4E8\">  <\/span><span style=\"color: #6A737D\"># \u622a\u8ddd\u662f\u5426\u62df\u5408<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">        <\/span><span style=\"color: #79B8FF\">self<\/span><span style=\"color: #E1E4E8\">._standardize <\/span><span style=\"color: #F97583\">=<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #79B8FF\">False<\/span><span style=\"color: #E1E4E8\">  <\/span><span style=\"color: #6A737D\"># \u6807\u51c6\u5316<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">        <\/span><span style=\"color: #79B8FF\">self<\/span><span style=\"color: #E1E4E8\">._alpha <\/span><span style=\"color: #F97583\">=<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #79B8FF\">1.0<\/span><span style=\"color: #E1E4E8\">  <\/span><span style=\"color: #6A737D\"># \u6b63\u5219\u5316\u529b\u5ea6<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">        <\/span><span style=\"color: #79B8FF\">self<\/span><span style=\"color: #E1E4E8\">._l1_ratio <\/span><span style=\"color: #F97583\">=<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #79B8FF\">0.5<\/span><span style=\"color: #E1E4E8\">  <\/span><span style=\"color: #6A737D\"># l1 \u6bd4\u4f8b<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">        <\/span><span style=\"color: #79B8FF\">self<\/span><span style=\"color: #E1E4E8\">._solver <\/span><span style=\"color: #F97583\">=<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #9ECBFF\">&quot;auto&quot;<\/span><span style=\"color: #E1E4E8\">  <\/span><span style=\"color: #6A737D\"># \u6c42\u89e3\u5668<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">    <\/span><span style=\"color: #F97583\">def<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #79B8FF\">__str__<\/span><span style=\"color: #E1E4E8\">(self) -&gt; <\/span><span style=\"color: #79B8FF\">str<\/span><span style=\"color: #E1E4E8\">:<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">        specs: <\/span><span style=\"color: #79B8FF\">dict<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #F97583\">=<\/span><span style=\"color: #E1E4E8\"> {}<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">        <\/span><span style=\"color: #F97583\">if<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #79B8FF\">self<\/span><span style=\"color: #E1E4E8\">._model_type:<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">            specs&#91;<\/span><span style=\"color: #9ECBFF\">&quot;\u6a21\u578b\u7c7b\u578b&quot;<\/span><span style=\"color: #E1E4E8\">&#93; <\/span><span style=\"color: #F97583\">=<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #79B8FF\">self<\/span><span style=\"color: #E1E4E8\">._model_type<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">        <\/span><span style=\"color: #F97583\">if<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #79B8FF\">self<\/span><span style=\"color: #E1E4E8\">._fit_intercept:<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">            specs&#91;<\/span><span style=\"color: #9ECBFF\">&quot;\u662f\u5426\u62df\u5408\u622a\u8ddd&quot;<\/span><span style=\"color: #E1E4E8\">&#93; <\/span><span style=\"color: #F97583\">=<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #79B8FF\">self<\/span><span style=\"color: #E1E4E8\">._fit_intercept<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">        <\/span><span style=\"color: #F97583\">if<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #79B8FF\">self<\/span><span style=\"color: #E1E4E8\">._standardize:<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">            specs&#91;<\/span><span style=\"color: #9ECBFF\">&quot;\u662f\u5426\u6807\u51c6\u5316&quot;<\/span><span style=\"color: #E1E4E8\">&#93; <\/span><span style=\"color: #F97583\">=<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #79B8FF\">self<\/span><span style=\"color: #E1E4E8\">._standardize<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">        <\/span><span style=\"color: #F97583\">if<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #79B8FF\">self<\/span><span style=\"color: #E1E4E8\">._alpha:<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">            specs&#91;<\/span><span style=\"color: #9ECBFF\">&quot;\u6b63\u5219\u5316\u529b\u5ea6&quot;<\/span><span style=\"color: #E1E4E8\">&#93; <\/span><span style=\"color: #F97583\">=<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #79B8FF\">self<\/span><span style=\"color: #E1E4E8\">._alpha<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">        <\/span><span style=\"color: #F97583\">if<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #79B8FF\">self<\/span><span style=\"color: #E1E4E8\">._l1_ratio:<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">            specs&#91;<\/span><span style=\"color: #9ECBFF\">&quot;L1 \u7cfb\u6570&quot;<\/span><span style=\"color: #E1E4E8\">&#93; <\/span><span style=\"color: #F97583\">=<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #79B8FF\">self<\/span><span style=\"color: #E1E4E8\">._l1_ratio<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">        <\/span><span style=\"color: #F97583\">if<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #79B8FF\">self<\/span><span style=\"color: #E1E4E8\">._solver:<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">            specs&#91;<\/span><span style=\"color: #9ECBFF\">&quot;\u6c42\u89e3\u5668&quot;<\/span><span style=\"color: #E1E4E8\">&#93; <\/span><span style=\"color: #F97583\">=<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #79B8FF\">self<\/span><span style=\"color: #E1E4E8\">._solver<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">        <\/span><span style=\"color: #F97583\">return<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #9ECBFF\">&quot;\u6a21\u578b\u4fe1\u606f\uff1a<\/span><span style=\"color: #79B8FF\">\\n<\/span><span style=\"color: #9ECBFF\">&quot;<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #F97583\">+<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #9ECBFF\">&quot;<\/span><span style=\"color: #79B8FF\">\\n<\/span><span style=\"color: #9ECBFF\">&quot;<\/span><span style=\"color: #E1E4E8\">.join(<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">            [<\/span><span style=\"color: #F97583\">f<\/span><span style=\"color: #9ECBFF\">&quot;<\/span><span style=\"color: #79B8FF\">{<\/span><span style=\"color: #E1E4E8\">key<\/span><span style=\"color: #79B8FF\">}<\/span><span style=\"color: #9ECBFF\">: <\/span><span style=\"color: #79B8FF\">{<\/span><span style=\"color: #E1E4E8\">specs&#91;key&#93;<\/span><span style=\"color: #79B8FF\">}<\/span><span style=\"color: #9ECBFF\">&quot;<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #F97583\">for<\/span><span style=\"color: #E1E4E8\"> key <\/span><span style=\"color: #F97583\">in<\/span><span style=\"color: #E1E4E8\"> specs.keys()]<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">        )<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #6A737D\"># 2. \u62bd\u8c61\u5efa\u9020\u8005<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F97583\">class<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #B392F0\">RegressorBuilder<\/span><span style=\"color: #E1E4E8\">(<\/span><span style=\"color: #79B8FF\">ABC<\/span><span style=\"color: #E1E4E8\">):<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">    <\/span><span style=\"color: #F97583\">def<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #79B8FF\">__init__<\/span><span style=\"color: #E1E4E8\">(self):<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">        <\/span><span style=\"color: #79B8FF\">self<\/span><span style=\"color: #E1E4E8\">.regressor <\/span><span style=\"color: #F97583\">=<\/span><span style=\"color: #E1E4E8\"> Regressor()<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">    <\/span><span style=\"color: #B392F0\">@abstractmethod<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">    <\/span><span style=\"color: #F97583\">def<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #B392F0\">select_type<\/span><span style=\"color: #E1E4E8\">(self):<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">        <\/span><span style=\"color: #F97583\">pass<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">    <\/span><span style=\"color: #B392F0\">@abstractmethod<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">    <\/span><span style=\"color: #F97583\">def<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #B392F0\">select_fit_intercept<\/span><span style=\"color: #E1E4E8\">(self):<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">        <\/span><span style=\"color: #F97583\">pass<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">    <\/span><span style=\"color: #B392F0\">@abstractmethod<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">    <\/span><span style=\"color: #F97583\">def<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #B392F0\">select_alpha<\/span><span style=\"color: #E1E4E8\">(self):<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">        <\/span><span style=\"color: #F97583\">pass<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">    <\/span><span style=\"color: #B392F0\">@abstractmethod<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">    <\/span><span style=\"color: #F97583\">def<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #B392F0\">select_l1_ratio<\/span><span style=\"color: #E1E4E8\">(self):<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">        <\/span><span style=\"color: #F97583\">pass<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">    <\/span><span style=\"color: #B392F0\">@abstractmethod<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">    <\/span><span style=\"color: #F97583\">def<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #B392F0\">select_solver<\/span><span style=\"color: #E1E4E8\">(self):<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">        <\/span><span style=\"color: #F97583\">pass<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">    <\/span><span style=\"color: #F97583\">def<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #B392F0\">get_regressor<\/span><span style=\"color: #E1E4E8\">(self) -&gt; Regressor:<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">        <\/span><span style=\"color: #F97583\">return<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #79B8FF\">self<\/span><span style=\"color: #E1E4E8\">.regressor<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #6A737D\"># 3. \u5177\u4f53\u5efa\u9020\u8005<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F97583\">class<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #B392F0\">LinearRegressorBuilder<\/span><span style=\"color: #E1E4E8\">(<\/span><span style=\"color: #B392F0\">RegressorBuilder<\/span><span style=\"color: #E1E4E8\">):<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">    <\/span><span style=\"color: #F97583\">def<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #B392F0\">select_type<\/span><span style=\"color: #E1E4E8\">(self):<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">        <\/span><span style=\"color: #79B8FF\">self<\/span><span style=\"color: #E1E4E8\">.regressor._model_type <\/span><span style=\"color: #F97583\">=<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #9ECBFF\">&quot;ols&quot;<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">    <\/span><span style=\"color: #F97583\">def<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #B392F0\">select_fit_intercept<\/span><span style=\"color: #E1E4E8\">(self):<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">        <\/span><span style=\"color: #79B8FF\">self<\/span><span style=\"color: #E1E4E8\">.regressor._fit_intercept <\/span><span style=\"color: #F97583\">=<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #79B8FF\">True<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">    <\/span><span style=\"color: #F97583\">def<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #B392F0\">select_alpha<\/span><span style=\"color: #E1E4E8\">(self):<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">        <\/span><span style=\"color: #79B8FF\">self<\/span><span style=\"color: #E1E4E8\">.regressor._alpha <\/span><span style=\"color: #F97583\">=<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #79B8FF\">0.0<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">    <\/span><span style=\"color: #F97583\">def<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #B392F0\">select_l1_ratio<\/span><span style=\"color: #E1E4E8\">(self):<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">        <\/span><span style=\"color: #79B8FF\">self<\/span><span style=\"color: #E1E4E8\">.regressor._l1_ratio <\/span><span style=\"color: #F97583\">=<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #79B8FF\">0.0<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">    <\/span><span style=\"color: #F97583\">def<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #B392F0\">select_solver<\/span><span style=\"color: #E1E4E8\">(self):<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">        <\/span><span style=\"color: #79B8FF\">self<\/span><span style=\"color: #E1E4E8\">.regressor._solver <\/span><span style=\"color: #F97583\">=<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #9ECBFF\">&quot;auto&quot;<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #F97583\">class<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #B392F0\">LassoRegressorBuilder<\/span><span style=\"color: #E1E4E8\">(<\/span><span style=\"color: #B392F0\">RegressorBuilder<\/span><span style=\"color: #E1E4E8\">):<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">    <\/span><span style=\"color: #F97583\">def<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #B392F0\">select_type<\/span><span style=\"color: #E1E4E8\">(self):<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">        <\/span><span style=\"color: #79B8FF\">self<\/span><span style=\"color: #E1E4E8\">.regressor._model_type <\/span><span style=\"color: #F97583\">=<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #9ECBFF\">&quot;lasso&quot;<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">    <\/span><span style=\"color: #F97583\">def<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #B392F0\">select_fit_intercept<\/span><span style=\"color: #E1E4E8\">(self):<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">        <\/span><span style=\"color: #79B8FF\">self<\/span><span style=\"color: #E1E4E8\">.regressor._fit_intercept <\/span><span style=\"color: #F97583\">=<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #79B8FF\">True<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">    <\/span><span style=\"color: #F97583\">def<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #B392F0\">select_alpha<\/span><span style=\"color: #E1E4E8\">(self):<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">        <\/span><span style=\"color: #79B8FF\">self<\/span><span style=\"color: #E1E4E8\">.regressor._alpha <\/span><span style=\"color: #F97583\">=<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #79B8FF\">1.0<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">    <\/span><span style=\"color: #F97583\">def<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #B392F0\">select_l1_ratio<\/span><span style=\"color: #E1E4E8\">(self):<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">        <\/span><span style=\"color: #79B8FF\">self<\/span><span style=\"color: #E1E4E8\">.regressor._l1_ratio <\/span><span style=\"color: #F97583\">=<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #79B8FF\">1.0<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">    <\/span><span style=\"color: #F97583\">def<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #B392F0\">select_solver<\/span><span style=\"color: #E1E4E8\">(self):<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">        <\/span><span style=\"color: #79B8FF\">self<\/span><span style=\"color: #E1E4E8\">.regressor._solver <\/span><span style=\"color: #F97583\">=<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #9ECBFF\">&quot;auto&quot;<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #6A737D\"># 4. \u6307\u6325\u8005<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F97583\">class<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #B392F0\">RegressorDirector<\/span><span style=\"color: #E1E4E8\">:<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">    <\/span><span style=\"color: #9ECBFF\">&quot;&quot;&quot;\u56de\u5f52\u5668\u6307\u6325\u8005&quot;&quot;&quot;<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">    <\/span><span style=\"color: #F97583\">def<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #79B8FF\">__init__<\/span><span style=\"color: #E1E4E8\">(self, builder: RegressorBuilder):<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">        <\/span><span style=\"color: #79B8FF\">self<\/span><span style=\"color: #E1E4E8\">.builder: RegressorBuilder <\/span><span style=\"color: #F97583\">=<\/span><span style=\"color: #E1E4E8\"> builder<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">    <\/span><span style=\"color: #F97583\">def<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #B392F0\">construct_regressor<\/span><span style=\"color: #E1E4E8\">(self):<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">        <\/span><span style=\"color: #9ECBFF\">&quot;&quot;&quot;\u6784\u5efa\u56de\u5f52\u6a21\u578b\u7684\u5b8c\u6574\u8fc7\u7a0b&quot;&quot;&quot;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">        <\/span><span style=\"color: #79B8FF\">self<\/span><span style=\"color: #E1E4E8\">.builder.select_alpha()<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">        <\/span><span style=\"color: #79B8FF\">self<\/span><span style=\"color: #E1E4E8\">.builder.select_fit_intercept()<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">        <\/span><span style=\"color: #79B8FF\">self<\/span><span style=\"color: #E1E4E8\">.builder.select_l1_ratio()<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">        <\/span><span style=\"color: #79B8FF\">self<\/span><span style=\"color: #E1E4E8\">.builder.select_solver()<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">        <\/span><span style=\"color: #79B8FF\">self<\/span><span style=\"color: #E1E4E8\">.builder.select_type()<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">    <\/span><span style=\"color: #F97583\">def<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #B392F0\">get_regressor<\/span><span style=\"color: #E1E4E8\">(self) -&gt; Regressor:<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">        <\/span><span style=\"color: #F97583\">return<\/span><span style=\"color: #E1E4E8\"> <\/span><span style=\"color: #79B8FF\">self<\/span><span style=\"color: #E1E4E8\">.builder.get_regressor()<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #6A737D\"># \u6784\u5efa LASSO \u6a21\u578b<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">lasso_builder <\/span><span style=\"color: #F97583\">=<\/span><span style=\"color: #E1E4E8\"> LassoRegressorBuilder()<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">lasso_director <\/span><span style=\"color: #F97583\">=<\/span><span style=\"color: #E1E4E8\"> RegressorDirector(lasso_builder)<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">lasso_director.construct_regressor()<\/span><\/span>\n<span class=\"line\"><span style=\"color: #E1E4E8\">lasso: Regressor <\/span><span style=\"color: #F97583\">=<\/span><span style=\"color: #E1E4E8\"> lasso_director.get_regressor()<\/span><\/span>\n<span class=\"line\"><span style=\"color: #79B8FF\">print<\/span><span style=\"color: #E1E4E8\">(lasso)<\/span><\/span>\n<span class=\"line\"><\/span><\/code><\/pre><\/div>\n","protected":false},"excerpt":{"rendered":"<p>\u5efa\u9020\u8005\u6a21\u5f0f\u7684\u6982\u5ff5 \u5efa\u9020\u8005\u6a21\u5f0f\u6709\u70b9\u50cf\u5de5\u5382\u6a21\u5f0f\uff0c\u5b83\u7684\u4e3b\u8981\u9762\u5411\u7684\u5bf9\u8c61\u662f\u53c2\u6570\u8f83\u591a\u7684\u5bf9\u8c61\uff0c\u4f8b\u5982\u7edf\u8ba1\u5b66\u5f53\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528\u56de\u5f52\u6a21 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":124,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8],"tags":[18],"class_list":{"0":"post-148","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-8","8":"tag-18"},"_links":{"self":[{"href":"https:\/\/www.xzqbear.com\/index.php\/wp-json\/wp\/v2\/posts\/148","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.xzqbear.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.xzqbear.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.xzqbear.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.xzqbear.com\/index.php\/wp-json\/wp\/v2\/comments?post=148"}],"version-history":[{"count":5,"href":"https:\/\/www.xzqbear.com\/index.php\/wp-json\/wp\/v2\/posts\/148\/revisions"}],"predecessor-version":[{"id":155,"href":"https:\/\/www.xzqbear.com\/index.php\/wp-json\/wp\/v2\/posts\/148\/revisions\/155"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.xzqbear.com\/index.php\/wp-json\/wp\/v2\/media\/124"}],"wp:attachment":[{"href":"https:\/\/www.xzqbear.com\/index.php\/wp-json\/wp\/v2\/media?parent=148"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.xzqbear.com\/index.php\/wp-json\/wp\/v2\/categories?post=148"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.xzqbear.com\/index.php\/wp-json\/wp\/v2\/tags?post=148"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}