{"id":47104,"date":"2026-08-14T14:02:14","date_gmt":"2026-08-14T05:02:14","guid":{"rendered":"https:\/\/www.ripla.co.jp\/blog\/?p=47104"},"modified":"2026-08-31T19:38:48","modified_gmt":"2026-08-31T10:38:48","slug":"generalization-performance","status":"publish","type":"post","link":"https:\/\/www.ripla.co.jp\/blog\/system\/generalization-performance\/","title":{"rendered":"\u6c4e\u5316\u6027\u80fd\u3068\u306f\uff1f\u8a55\u4fa1\u65b9\u6cd5\u30fb\u904e\u5b66\u7fd2\u3068\u306e\u95a2\u4fc2\u30fb\u6539\u5584\u7b56\u3092\u89e3\u8aac"},"content":{"rendered":"\n<p 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class=\"wp-block-paragraph\">\u6c4e\u5316\u6027\u80fd\u306f\u3001\u672a\u77e5\u30c7\u30fc\u30bf\u3084\u5c06\u6765\u306e\u904b\u7528\u30c7\u30fc\u30bf\u3078\u5b89\u5b9a\u3057\u3066\u9069\u5fdc\u3067\u304d\u308b\u80fd\u529b\u3067\u3059\u3002\u8a13\u7df4\u30b9\u30b3\u30a2\u304c\u9ad8\u3044\u3060\u3051\u3067\u306f\u5224\u65ad\u3067\u304d\u305a\u3001\u691c\u8a3c\u30fb\u30c6\u30b9\u30c8\u306e\u5206\u96e2\u3001\u9069\u5207\u306a\u4ea4\u5dee\u691c\u8a3c\u3001\u30c7\u30fc\u30bf\u30ea\u30fc\u30af\u306e\u9632\u6b62\u3001\u76ee\u7684\u306b\u5408\u3046\u6307\u6a19\u304c\u5fc5\u8981\u3067\u3059\u3002\u904e\u5b66\u7fd2\u306b\u306f\u6b63\u5247\u5316\u3084\u65e9\u671f\u7d42\u4e86\u3001\u672a\u5b66\u7fd2\u306b\u306f\u7279\u5fb4\u91cf\u3084\u30e2\u30c7\u30eb\u8868\u73fe\u306e\u898b\u76f4\u3057\u3092\u884c\u3044\u3001\u8907\u6570\u306e\u6761\u4ef6\u3067\u6539\u5584\u3092\u6bd4\u8f03\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u3055\u3089\u306b\u3001\u516c\u958b\u5f8c\u306e\u30c7\u30fc\u30bf\u5206\u5e03\u3084\u30b0\u30eb\u30fc\u30d7\u5225\u6027\u80fd\u3092\u76e3\u8996\u3057\u3001\u6c4e\u5316\u6027\u80fd\u304c\u7dad\u6301\u3055\u308c\u3066\u3044\u308b\u304b\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002\u8a55\u4fa1\u65b9\u6cd5\u304c\u4e88\u6e2c\u30b7\u30ca\u30ea\u30aa\u3068\u4e00\u81f4\u3057\u3066\u3044\u308b\u3053\u3068\u3001\u6539\u5584\u5e45\u304c\u904b\u7528\u30b3\u30b9\u30c8\u306b\u898b\u5408\u3046\u3053\u3068\u3001\u518d\u73fe\u53ef\u80fd\u306a\u5b9f\u9a13\u8a18\u9332\u304c\u3042\u308b\u3053\u3068\u3092\u91cd\u8996\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u30e2\u30c7\u30eb\u306e\u9078\u629e\u306f\u6700\u3082\u9ad8\u3044\u4e00\u3064\u306e\u6570\u5b57\u3067\u306f\u306a\u304f\u3001\u5c06\u6765\u306e\u5229\u7528\u6761\u4ef6\u3067\u4fe1\u983c\u3067\u304d\u308b\u304b\u3068\u3044\u3046\u89b3\u70b9\u3067\u884c\u3046\u306e\u304c\u5b9f\u52d9\u7684\u3067\u3059\u3002<\/p>\n\n\n\n<h2 id=\"faq\" class=\"wp-block-heading\" style=\"background:#c3d3e1; padding:12px 20px; margin:32px 0 16px; color:#222;\"><strong>\u3088\u304f\u3042\u308b\u8cea\u554f\uff08FAQ\uff09<\/strong><\/h2>\n\n\n\n<h3 id=\"q-generalization-definition\" class=\"wp-block-heading\"><strong>Q. \u6c4e\u5316\u6027\u80fd\u3068\u306f\u4f55\u3067\u3059\u304b\uff1f<\/strong><\/h3>\n\n\n<p class=\"wp-block-paragraph\">\u6c4e\u5316\u6027\u80fd\u3068\u306f\u3001\u6a5f\u68b0\u5b66\u7fd2\u30e2\u30c7\u30eb\u304c\u5b66\u7fd2\u306b\u4f7f\u3063\u3066\u3044\u306a\u3044\u672a\u77e5\u30c7\u30fc\u30bf\u3084\u5c06\u6765\u306e\u904b\u7528\u30c7\u30fc\u30bf\u306b\u5bfe\u3057\u3066\u3001\u5b89\u5b9a\u3057\u3066\u4e88\u6e2c\u3067\u304d\u308b\u80fd\u529b\u3067\u3059\u3002\u8a13\u7df4\u30c7\u30fc\u30bf\u306e\u30b9\u30b3\u30a2\u3060\u3051\u3067\u306f\u5224\u65ad\u3067\u304d\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<h3 id=\"q-generalization-overfit\" class=\"wp-block-heading\"><strong>Q. \u904e\u5b66\u7fd2\u3068\u6c4e\u5316\u6027\u80fd\u306f\u3069\u3046\u95a2\u4fc2\u3057\u307e\u3059\u304b\uff1f<\/strong><\/h3>\n\n\n<p class=\"wp-block-paragraph\">\u904e\u5b66\u7fd2\u306f\u8a13\u7df4\u30c7\u30fc\u30bf\u306e\u7d30\u90e8\u3084\u30ce\u30a4\u30ba\u307e\u3067\u899a\u3048\u3001\u672a\u77e5\u30c7\u30fc\u30bf\u3067\u306e\u8aa4\u5dee\u304c\u5897\u3048\u308b\u72b6\u614b\u3067\u3059\u3002\u8a13\u7df4\u30b9\u30b3\u30a2\u3068\u691c\u8a3c\u30b9\u30b3\u30a2\u306e\u5dee\u3001\u5206\u5272\u3054\u3068\u306e\u3070\u3089\u3064\u304d\u3092\u78ba\u8a8d\u3057\u3066\u691c\u51fa\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h3 id=\"q-generalization-cv\" class=\"wp-block-heading\"><strong>Q. \u4ea4\u5dee\u691c\u8a3c\u3092\u4f7f\u3048\u3070\u6c4e\u5316\u6027\u80fd\u3092\u6b63\u78ba\u306b\u6e2c\u308c\u307e\u3059\u304b\uff1f<\/strong><\/h3>\n\n\n<p class=\"wp-block-paragraph\">\u4ea4\u5dee\u691c\u8a3c\u306f\u5206\u5272\u306e\u5076\u7136\u306b\u4f9d\u5b58\u3057\u306b\u304f\u3044\u63a8\u5b9a\u65b9\u6cd5\u3067\u3059\u304c\u3001\u904b\u7528\u6642\u306e\u5206\u5272\u6761\u4ef6\u3084\u5206\u5e03\u5909\u5316\u3092\u81ea\u52d5\u3067\u518d\u73fe\u3059\u308b\u3082\u306e\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u6642\u7cfb\u5217\u30fb\u30b0\u30eb\u30fc\u30d7\u306a\u3069\u4e88\u6e2c\u30b7\u30ca\u30ea\u30aa\u306b\u5408\u3046\u5206\u5272\u3092\u4f7f\u3044\u3001\u6700\u7d42\u30c6\u30b9\u30c8\u3092\u5225\u306b\u6b8b\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h3 id=\"q-generalization-leakage\" class=\"wp-block-heading\"><strong>Q. \u6c4e\u5316\u6027\u80fd\u3092\u9ad8\u304f\u898b\u305b\u308b\u30c7\u30fc\u30bf\u30ea\u30fc\u30af\u3068\u306f\u4f55\u3067\u3059\u304b\uff1f<\/strong><\/h3>\n\n\n<p class=\"wp-block-paragraph\">\u30c7\u30fc\u30bf\u30ea\u30fc\u30af\u306f\u3001\u4e88\u6e2c\u6642\u70b9\u3067\u306f\u5229\u7528\u3067\u304d\u306a\u3044\u60c5\u5831\u3084\u8a55\u4fa1\u5bfe\u8c61\u306b\u8fd1\u3044\u60c5\u5831\u304c\u5b66\u7fd2\u51e6\u7406\u3078\u6df7\u3056\u308b\u3053\u3068\u3067\u3059\u3002\u5206\u5272\u524d\u306e\u524d\u51e6\u7406\u3001\u672a\u6765\u306e\u96c6\u8a08\u5024\u3001\u91cd\u8907\u30ec\u30b3\u30fc\u30c9\u306e\u5206\u5272\u306a\u3069\u304c\u5178\u578b\u3067\u3001\u8a55\u4fa1\u30b9\u30b3\u30a2\u304c\u5b9f\u969b\u3088\u308a\u9ad8\u304f\u898b\u3048\u307e\u3059\u3002<\/p>\n\n\n\n<h3 id=\"q-generalization-monitor\" class=\"wp-block-heading\"><strong>Q. \u516c\u958b\u5f8c\u3082\u6c4e\u5316\u6027\u80fd\u3092\u78ba\u8a8d\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u304b\uff1f<\/strong><\/h3>\n\n\n<p 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id=\"references\" class=\"wp-block-heading\" style=\"background:#c3d3e1; padding:12px 20px; margin:32px 0 16px; color:#222;\"><strong>\u53c2\u8003\u8cc7\u6599<\/strong><\/h2>\n\n\n<ul class=\"wp-block-list\"><li>scikit-learn User Guide\u300cCross-validation: evaluating estimator performance\u300d<br><a href=\"https:\/\/scikit-learn.org\/stable\/modules\/cross_validation.html\" target=\"_blank\" rel=\"noopener\">https:\/\/scikit-learn.org\/stable\/modules\/cross_validation.html<\/a><\/li><li>scikit-learn User Guide\u300cTuning the hyper-parameters of an estimator\u300d<br><a href=\"https:\/\/scikit-learn.org\/stable\/modules\/grid_search.html\" target=\"_blank\" rel=\"noopener\">https:\/\/scikit-learn.org\/stable\/modules\/grid_search.html<\/a><\/li><li>scikit-learn User Guide\u300cCommon pitfalls and recommended practices\u300d<br><a href=\"https:\/\/scikit-learn.org\/stable\/common_pitfalls.html\" target=\"_blank\" rel=\"noopener\">https:\/\/scikit-learn.org\/stable\/common_pitfalls.html<\/a><\/li><li>Google for Developers\u300cRules of Machine Learning\u300d<br><a href=\"https:\/\/developers.google.com\/machine-learning\/guides\/rules-of-ml\" target=\"_blank\" rel=\"noopener\">https:\/\/developers.google.com\/machine-learning\/guides\/rules-of-ml<\/a><\/li><\/ul>\n\n","protected":false},"excerpt":{"rendered":"<p>\u6c4e\u5316\u6027\u80fd\u3068\u306f\u3001\u6a5f\u68b0\u5b66\u7fd2\u30e2\u30c7\u30eb\u304c\u5b66\u7fd2\u306b\u4f7f\u3063\u3066\u3044\u306a\u3044\u672a\u77e5\u306e\u30c7\u30fc\u30bf\u306b\u5bfe\u3057\u3066\u3082\u3001\u5b89\u5b9a\u3057\u3066\u4e88\u6e2c\u3067\u304d\u308b\u80fd\u529b\u3067\u3059\u3002\u8a13\u7df4\u30c7\u30fc\u30bf\u306e\u6b63\u89e3\u7387\u304c\u9ad8\u3044\u3060\u3051\u3067\u306f\u3001\u6c4e\u5316\u6027\u80fd\u304c\u9ad8\u3044\u3068\u306f\u9650\u308a\u307e\u305b\u3093\u3002\u30e2\u30c7\u30eb\u304c\u8a13\u7df4\u30c7\u30fc\u30bf\u306e\u5076\u7136\u306e\u30ce\u30a4\u30ba\u3084\u56fa\u6709\u306e\u30d1\u30bf\u30fc\u30f3\u307e\u3067\u899a\u3048 [&hellip;]<\/p>\n","protected":false},"author":266270553,"featured_media":49,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"{title}\n\n{excerpt}\n\n{url}","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"_wpas_customize_per_network":false,"jetpack_post_was_ever_published":false},"categories":[30723332],"tags":[],"class_list":["post-47104","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-system"],"jetpack_publicize_connections":[],"jetpack_likes_enabled":true,"jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/pgydx5-cfK","jetpack-related-posts":[{"id":47114,"url":"https:\/\/www.ripla.co.jp\/blog\/system\/tree-pruning\/","url_meta":{"origin":47104,"position":0},"title":"\u679d\u5208\u308a\u3068\u306f\uff1f\u6c7a\u5b9a\u6728\u306e\u904e\u5b66\u7fd2\u5bfe\u7b56\u30fb\u65b9\u6cd5\u30fb\u8a55\u4fa1\u3092\u89e3\u8aac","author":"\u682a\u5f0f\u4f1a\u793eripla\u30e1\u30f3\u30d0\u30fc","date":"2026\u5e748\u670814\u65e5","format":false,"excerpt":"\u679d\u5208\u308a\u3068\u306f\u3001\u6c7a\u5b9a\u6728\u306e\u679d\u3084\u8449\u3092\u524a\u9664\u3057\u3066\u3001\u6728\u304c\u5b66\u7fd2\u30c7\u30fc\u30bf\u306b\u9069\u5408\u3057\u3059\u304e\u308b\u3053\u3068\u3092\u6291\u3048\u308b\u624b\u6cd5\u3067\u3059\u3002\u6c7a\u5b9a\u6728\u306f\u5206\u5272\u2026","rel":"","context":"\u30b7\u30b9\u30c6\u30e0\u958b\u767a","block_context":{"text":"\u30b7\u30b9\u30c6\u30e0\u958b\u767a","link":"https:\/\/www.ripla.co.jp\/blog\/category\/system\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.ripla.co.jp\/blog\/wp-content\/uploads\/2025\/05\/22212851.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.ripla.co.jp\/blog\/wp-content\/uploads\/2025\/05\/22212851.jpg?resize=350%2C200&ssl=1 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