{"id":2191,"date":"2022-02-19T19:19:52","date_gmt":"2022-02-19T10:19:52","guid":{"rendered":"https:\/\/aiacademy.jp\/media\/?p=2191"},"modified":"2024-08-08T16:11:35","modified_gmt":"2024-08-08T07:11:35","slug":"train_test_split%e9%96%a2%e6%95%b0-random_state-%e3%81%a8%e3%81%af","status":"publish","type":"post","link":"https:\/\/aiacademy.jp\/media\/?p=2191","title":{"rendered":"train_test_split\u95a2\u6570 random_state \u3068\u306f"},"content":{"rendered":"<div id=\"sgb-css-id-1\">\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button has-custom-font-size is-style-fill has-medium-font-size\"><a class=\"wp-block-button__link has-vivid-green-cyan-background-color has-background wp-element-button\" href=\"https:\/\/lin.ee\/3E4GzWk\" rel=\"nofollow noopener\" target=\"_blank\">LINE\u53cb\u3060\u3061\u767b\u9332 \u25b6 \u6a5f\u68b0\u5b66\u7fd2\u30b3\u30fc\u30b9 \u25b6 \u53d7\u8b1b\u5272\u5f15\u30af\u30fc\u30dd\u30f3 \u7121\u6599\u52d5\u753b<\/a><\/div>\n<\/div>\n<\/div>\n\n\n<div class=\"toc\">    <div id=\"toc_container\" class=\"sgb-toc--no-bullets js-smooth-scroll\" data-dialog-title=\"Table of Contents\">\n      <p class=\"toc_title\">\u76ee\u6b21 <\/p>\n      <ul class=\"toc_list\">  <li class=\"first\">    <span><\/span>    <ul class=\"menu_level_1\">      <li class=\"first last\">        <a href=\"#i-0\">random_state \u3068\u306f<\/a>      <\/li>    <\/ul>  <\/li>  <li class=\"last\">    <a href=\"#i-1\">\u6a5f\u68b0\u5b66\u7fd2\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u3092\u52b9\u7387\u3088\u304f\u5b66\u3076\u306b\u306f\uff1f<\/a>  <\/li><\/ul>\n      \n    <\/div><\/div><div class=\"toc\"><p><\/p>\n<\/div><h2 class=\"wp-block-heading\" id=\"i-0\">random_state \u3068\u306f<\/h2>\n\n\n\n<p><code>train_test_split<\/code>\u95a2\u6570\u306e\u5f15\u6570\u306b<code>random_state=1<\/code>\u306a\u3069\u3068\u3044\u3063\u305f\u3088\u3046\u306b1\u306a\u3069\u306e\u4efb\u610f\u306e\u5024\uff08seed\u3084\u7a2e\u3068\u547c\u3073\u307e\u3059\uff09\u3092\u6e21\u3059\u4e8b\u304c\u51fa\u6765\u307e\u3059\u3002<\/p>\n\n\n\n<p>random_state\u306f\u521d\u671f\u5024\u306b\u306fNone\u304c\u5272\u308a\u5f53\u3066\u3089\u308c\u3066\u3044\u307e\u3059\u304c\u3001random_state\u306b\u4efb\u610f\u306eint\u578b\u306e\u5024\u3092\u6307\u5b9a\u3059\u308b\u3053\u3068\u3067\uff08\u4f8b\u3048\u30701\u306a\u3069\uff09\u306b\u3059\u308b\u4e8b\u3067\u5206\u5272\u7d50\u679c\u304c\u56fa\u5b9a\u3055\u308c\u307e\u3059\u3002\uff08<strong>\u56fa\u5b9a\u3059\u308b\u3053\u3068\u3067\u3001\u5e38\u306b\u540c\u3058\u3088\u3046\u306b\u5206\u5272\u3055\u308c\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/strong>\uff09<\/p>\n\n\n\n<p>scikit-learn\u306e<code>train_test_split<\/code>\u95a2\u6570\u306e1\u3064\u306e\u30aa\u30d7\u30b7\u30e7\u30f3\u3067\u3042\u308b<code>random_state<\/code>\u3067\u3059\u304c\u3001\u7279\u306b\u300c\u3053\u306e\u6570\u5024\u3092\u6e21\u3059\u5fc5\u8981\u304c\u3042\u308b\u308f\u3051\u3067\u306f\u306a\u304f\uff08\u9069\u6b63\u306a\u5024\u304c\u6c7a\u3081\u3089\u308c\u3066\u3044\u308b\u308f\u3051\u3067\u306f\u306a\u304f\uff09\u3001\u5f15\u6570\u306b\u6e21\u3059\u6570\u5024\u306f0\u3067\u30821\u3067\u30822\u3067\u3082\u81ea\u7531\u306b\u521d\u671f\u5024\u3092\u4e0e\u3048\u308b\u4e8b\u304c\u51fa\u6765\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3053\u3053\u3067\u88dc\u8db3\u3067\u3059\u304c\u3001<code>random_state<\/code>\u306b\u5f15\u6570\u306b\u6e21\u3059seed\uff08\u7a2e\uff09\u306f\u5b8c\u5168\u306a\u30e9\u30f3\u30c0\u30e0\u3067\u306f\u306a\u304f\u3001\u7591\u4f3c\u7684\u306a\u4e71\u6570\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u91cd\u8981\u306a\u306e\u304c\u540c\u3058seed\uff08\u7a2e\uff09\u304b\u3089\u306f\u5e38\u306b\u540c\u3058\u4e71\u6570\u306e\u7d44\u307f\u5408\u308f\u305b\u304c\u751f\u6210\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3067\u3059\u306e\u3067\u3001\u540c\u3058\u30c7\u30fc\u30bf\u30bb\u30c3\u30c8\u306b\u5bfe\u3057\u3066\u3001<code>train_test_split<\/code>\u95a2\u6570\u306e<code>random_state<\/code>\u306b\u4f8b\u3048\u30701\u3092\u6307\u5b9a\u3059\u308b\u3068\u305d\u306eseed\uff08\u7a2e\uff09\u3067\u306e\u5206\u5272\u306f\u540c\u3058\u7d50\u679c\u306b\u306a\u308a\u307e\u3059\u3002\u4f8b\u3048\u3070\u3001Python\u306e<code>random<\/code>\u30e2\u30b8\u30e5\u30fc\u30eb\u306e<code>random()<\/code>\u3067\u4e71\u6570\u3092\u51fa\u529b\u3059\u308b\u4f8b\u3092\u898b\u3066\u307f\u307e\u3057\u3087\u3046\u3002seed\u30921\u306b\u56fa\u5b9a\u3057\u305f\u5834\u5408\u4ee5\u4e0b\u306e\u30b3\u30fc\u30c9\u3067\u306f\u3001\u3069\u306e\u3088\u3046\u306a\u74b0\u5883\u3067\u3082\u540c\u3058\u4e71\u6570\u5024\u304c\u5f97\u3089\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>import random\nrandom.seed(1) # \u3053\u306e1\u3068\u3044\u3046\u5024\u306f\u9069\u5f53\u306b1\u3068\u5b9a\u3081\u305f\u305f\u3081\u3001\u7279\u306b\u610f\u5473\u306f\u3042\u308a\u307e\u305b\u3093\n# seed\u30921\u3068\u3057\u305f\u5834\u5408\u3001\u3069\u306e\u74b0\u5883\u3067\u3082\u3001\u6700\u521d\u306e\u5024\u306f\u5fc5\u305a 0.13436424411240122\u304c\u51fa\u529b\u3055\u308c\u307e\u3059\u3002\nprint(random.random()) # 0.13436424411240122\n# \u540c\u69d8\u306bprint(random.random())\u3092\u5b9f\u884c\u3057\u305f\u3089\u51fa\u529b\u3055\u308c\u308b\u5024\u3082\u3069\u306e\u74b0\u5883\u3067\u3082\u540c\u3058\u305d\u306e\u5024\u304c\u51fa\u529b\u3055\u308c\u307e\u3059\u3002<\/code><\/pre>\n\n\n\n<p>\u5b9f\u969b\u306btrain_test_split\u95a2\u6570\u306brandom_state\u30921\u3067\u56fa\u5b9a\u3057\u305f\u7d50\u679c\u3092\u78ba\u8a8d\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>from sklearn.datasets import load_iris\nfrom sklearn.model_selection import train_test_split\n\niris = load_iris() # \u30a2\u30a4\u30ea\u30b9\u306e\u82b1\u306e\u30c7\u30fc\u30bf\u30bb\u30c3\u30c8\u306e\u8aad\u307f\u8fbc\u307f\nx = iris.data # \u5168\u4f53\u306f150\u500b\ny = iris.target\nx_train, x_test, y_train, y_test = train_test_split(x, y, random_state=1)\nprint(x_train[:3])#3\u3064\u306e\u7d44\u307f\u5408\u308f\u305b\u3060\u3051\u53d6\u5f97<\/code><\/pre>\n\n\n\n<p>\u4e0a\u8a18\u306e\u51fa\u529b\u7d50\u679c\u306f\u3069\u306e\u74b0\u5883\u3067\u3082\u4ee5\u4e0b\u306e\u7d44\u307f\u5408\u308f\u305b\u304c\u51fa\u529b\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>[[6.5 2.8 4.6 1.5]\n [6.7 2.5 5.8 1.8]\n [6.8 3.  5.5 2.1]]<\/code><\/pre>\n\n\n\n<h1 class=\"wp-block-heading\" id=\"i-1\">\u6a5f\u68b0\u5b66\u7fd2\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u3092\u52b9\u7387\u3088\u304f\u5b66\u3076\u306b\u306f\uff1f<\/h1>\n\n\n\n<p>\u6a5f\u68b0\u5b66\u7fd2\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u3092\u52b9\u7387\u3088\u304f\u5b66\u3076\u306b\u306f\u3001\u666e\u6bb5\u304b\u3089Python\u3092\u7528\u3044\u3066\u6a5f\u68b0\u5b66\u7fd2\u3092\u6271\u3063\u3066\u3044\u308b\u73fe\u5f79\u306e\u30c7\u30fc\u30bf\u30b5\u30a4\u30a8\u30f3\u30c6\u30a3\u30b9\u30c8\u3084\u6a5f\u68b0\u5b66\u7fd2\u30a8\u30f3\u30b8\u30cb\u30a2\u306b\u8cea\u554f\u3067\u304d\u308b\u74b0\u5883\u3067\u5b66\u3076\u3053\u3068\u3067\u3059\u3002<br>\u8cea\u554f\u3057\u653e\u984c\u304b\u3064\u3001\u4f53\u7cfb\u7684\u306b\u5b66\u3079\u308b\u52d5\u753b\u30b3\u30f3\u30c6\u30f3\u30c4\u3067\u30c7\u30fc\u30bf\u5206\u6790\u6280\u8853\u3092\u5b66\u3073\u305f\u3044\u65b9\u306f\u3001\u30aa\u30f3\u30e9\u30a4\u30f3\u3067\u597d\u304d\u306a\u6642\u9593\u306b\u52c9\u5f37\u3067\u304d\u308b<a href=\"https:\/\/aiacademy.jp\/bootcamp\">AI Academy Bootcamp<\/a>\u304c\u30aa\u30b9\u30b9\u30e1\u3067\u3059\u3002\u53d7\u8b1b\u6599\u3082\u696d\u754c\u6700\u5b89\u5024\u306e35,000\u5186\uff08\uff16\u30f6\u6708\u9593\u8cea\u554f\u3057\u653e\u984c\uff0b\u30aa\u30ea\u30b8\u30ca\u30eb\u306e\u52d5\u753b\u30b3\u30f3\u30c6\u30f3\u30c4\u3001\u30c6\u30ad\u30b9\u30c8\u30b3\u30f3\u30c6\u30f3\u30c4\u306e\u5229\u7528\u53ef\u80fd\uff09\u306a\u306e\u3067\u3001\u662f\u975e\u3054\u6d3b\u7528\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><a href=\"https:\/\/aiacademy.jp\/bootcamp\/\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"341\" src=\"https:\/\/aiacademy.jp\/media\/wp-content\/uploads\/2021\/12\/bootcamp_ad_72ppi-1024x341.png\" alt=\"\" class=\"wp-image-691\" srcset=\"https:\/\/aiacademy.jp\/media\/wp-content\/uploads\/2021\/12\/bootcamp_ad_72ppi-1024x341.png 1024w, https:\/\/aiacademy.jp\/media\/wp-content\/uploads\/2021\/12\/bootcamp_ad_72ppi-300x100.png 300w, https:\/\/aiacademy.jp\/media\/wp-content\/uploads\/2021\/12\/bootcamp_ad_72ppi-768x256.png 768w, https:\/\/aiacademy.jp\/media\/wp-content\/uploads\/2021\/12\/bootcamp_ad_72ppi-940x313.png 940w, https:\/\/aiacademy.jp\/media\/wp-content\/uploads\/2021\/12\/bootcamp_ad_72ppi.png 1200w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\"><\/a><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>\u76ee\u6b21 random_state \u3068\u306f \u6a5f\u68b0\u5b66\u7fd2\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u3092\u52b9\u7387\u3088\u304f\u5b66\u3076\u306b\u306f\uff1f random_state \u3068\u306f train_test_split\u95a2\u6570\u306e\u5f15\u6570\u306brandom_state=1\u306a\u3069\u3068\u3044\u3063\u305f\u3088\u3046\u306b1\u306a\u3069\u306e\u4efb\u610f\u306e\u5024 &#8230; <\/p>\n","protected":false},"author":1,"featured_media":2193,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[85,176],"tags":[],"class_list":{"0":"post-2191","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-python","8":"category-sklearn"},"_links":{"self":[{"href":"https:\/\/aiacademy.jp\/media\/index.php?rest_route=\/wp\/v2\/posts\/2191","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/aiacademy.jp\/media\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/aiacademy.jp\/media\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/aiacademy.jp\/media\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/aiacademy.jp\/media\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2191"}],"version-history":[{"count":3,"href":"https:\/\/aiacademy.jp\/media\/index.php?rest_route=\/wp\/v2\/posts\/2191\/revisions"}],"predecessor-version":[{"id":4865,"href":"https:\/\/aiacademy.jp\/media\/index.php?rest_route=\/wp\/v2\/posts\/2191\/revisions\/4865"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/aiacademy.jp\/media\/index.php?rest_route=\/wp\/v2\/media\/2193"}],"wp:attachment":[{"href":"https:\/\/aiacademy.jp\/media\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2191"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/aiacademy.jp\/media\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2191"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/aiacademy.jp\/media\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2191"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}