{"id":47102,"date":"2026-08-14T14:02:12","date_gmt":"2026-08-14T05:02:12","guid":{"rendered":"https:\/\/www.ripla.co.jp\/blog\/?p=47102"},"modified":"2026-10-23T20:30:39","modified_gmt":"2026-10-23T11:30:39","slug":"l2-regularization","status":"publish","type":"post","link":"https:\/\/www.ripla.co.jp\/blog\/system\/l2-regularization\/","title":{"rendered":"L2\u6b63\u5247\u5316\u3068\u306f\uff1f\u4ed5\u7d44\u307f\u30fbL1\u6b63\u5247\u5316\u3068\u306e\u9055\u3044\u30fb\u6d3b\u7528\u65b9\u6cd5\u3092\u89e3\u8aac"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\" style=\"font-size:18px;line-height:1.9;margin:0 0 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href=\"https:\/\/www.ripla.co.jp\/download\/11\">\u7121\u6599\u30db\u30ef\u30a4\u30c8\u30da\u30fc\u30d1\u30fc\u300c\u30102026\u5e74\u6700\u65b0\u7248\u3011AI\u99c6\u52d5\u958b\u767a\u306e\u5b8c\u5168\u30ac\u30a4\u30c9\u30d6\u30c3\u30af\u300d<\/a>\u3067\u8a73\u3057\u304f\u89e3\u8aac\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<h2 id=\"l2-regularization-overview\" class=\"wp-block-heading\" style=\"background:#c3d3e1; padding:12px 20px; margin:32px 0 16px; color:#222;\"><strong>L2\u6b63\u5247\u5316\u306e\u5b9a\u7fa9\uff5c\u91cd\u307f\u306e\u5927\u304d\u3055\u306b\u30da\u30ca\u30eb\u30c6\u30a3\u3092\u52a0\u3048\u308b\u65b9\u6cd5<\/strong><\/h2>\n\n<figure class=\"wp-block-image aligncenter size-full\" style=\"max-width:640px;margin:24px auto;\"><img loading=\"lazy\" decoding=\"async\" data-attachment-id=\"76678\" data-permalink=\"https:\/\/www.ripla.co.jp\/blog\/image-1-1524\/\" data-orig-file=\"https:\/\/www.ripla.co.jp\/blog\/wp-content\/uploads\/2026\/09\/image-1-1524.webp\" 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src=\"https:\/\/www.ripla.co.jp\/blog\/wp-content\/uploads\/2026\/09\/image-1-1524.webp\" alt=\"L2\u6b63\u5247\u5316\u3092\u4e2d\u5fc3\u306b\u640d\u5931\u95a2\u6570\u3001\u91cd\u307f\u306e\u4e8c\u4e57\u548c\u3001\u03bb\u3001\u4fc2\u6570\u306e\u95a2\u4fc2\u3092\u793a\u3059\u56f3\" title=\"L2\u6b63\u5247\u5316\u306f\u91cd\u307f\u306e\u4e8c\u4e57\u548c\u3092\u640d\u5931\u95a2\u6570\u306b\u52a0\u3048\u4fc2\u6570\u3092\u7e2e\u3081\u308b\" class=\"wp-image-76678\" width=\"1672\" height=\"941\" style=\"display:block;width:100%;height:auto;max-width:640px;\" srcset=\"https:\/\/www.ripla.co.jp\/blog\/wp-content\/uploads\/2026\/09\/image-1-1524.webp 1672w, https:\/\/www.ripla.co.jp\/blog\/wp-content\/uploads\/2026\/09\/image-1-1524-300x169.webp 300w, https:\/\/www.ripla.co.jp\/blog\/wp-content\/uploads\/2026\/09\/image-1-1524-1024x576.webp 1024w, https:\/\/www.ripla.co.jp\/blog\/wp-content\/uploads\/2026\/09\/image-1-1524-768x432.webp 768w, https:\/\/www.ripla.co.jp\/blog\/wp-content\/uploads\/2026\/09\/image-1-1524-1536x864.webp 1536w\" sizes=\"auto, (max-width: 1672px) 100vw, 1672px\" \/><figcaption class=\"wp-element-caption\" style=\"font-size:12px;line-height:1.6;color:#777;margin-top:8px;text-align:center;\">\u5927\u304d\u306a\u4fc2\u6570\u307b\u3069\u5f37\u304f\u6291\u3048\u308b\u4ed5\u7d44\u307f<\/figcaption><\/figure>\n\n\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:18px;line-height:1.9;margin:0 0 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class=\"wp-block-paragraph\" style=\"font-size:18px;line-height:1.9;margin:0 0 18px;\">\u3053\u3053\u3067\u3044\u3046L2\u306f\u3001\u91cd\u307f\u3092\u4e8c\u4e57\u3057\u3066\u8db3\u3057\u5408\u308f\u305b\u308b\u30ce\u30eb\u30e0\u306b\u7531\u6765\u3057\u307e\u3059\u3002\u4e8c\u4e57\u3057\u3066\u3044\u308b\u305f\u3081\u3001\u7d76\u5bfe\u5024\u304c\u5927\u304d\u3044\u91cd\u307f\u307b\u3069\u5f37\u3044\u30da\u30ca\u30eb\u30c6\u30a3\u304c\u304b\u304b\u308a\u3001\u3059\u3079\u3066\u306e\u91cd\u307f\u3092\u5c11\u3057\u305a\u3064\u7e2e\u3081\u308b\u65b9\u5411\u306b\u50cd\u304d\u307e\u3059\u3002<\/p>\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:18px;line-height:1.9;margin:0 0 18px;\">L2\u306f\u4fc2\u6570\u3092\u5b8c\u5168\u306b0\u3078\u56fa\u5b9a\u3059\u308b\u3053\u3068\u3092\u76f4\u63a5\u306e\u76ee\u7684\u306b\u3057\u307e\u305b\u3093\u3002\u305d\u306e\u305f\u3081\u3001\u95a2\u9023\u3059\u308b\u7279\u5fb4\u91cf\u3092\u6b8b\u3057\u306a\u304c\u3089\u30e2\u30c7\u30eb\u5168\u4f53\u3092\u6ed1\u3089\u304b\u306b\u3057\u305f\u3044\u5834\u5408\u306b\u5411\u3044\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<h2 id=\"l2-mechanism\" class=\"wp-block-heading\" style=\"background:#c3d3e1; padding:12px 20px; margin:32px 0 16px; color:#222;\"><strong>L2\u6b63\u5247\u5316\u306e\u4ed5\u7d44\u307f\uff5c\u640d\u5931\u95a2\u6570\u3068\u4fc2\u6570\u306e\u95a2\u4fc2<\/strong><\/h2>\n\n\n\n<h3 id=\"l2-objective\" class=\"wp-block-heading\" style=\"border-left:4px solid #0693e3;padding-left:16px;\"><strong>\u4e88\u6e2c\u8aa4\u5dee\u3068\u4fc2\u6570\u306e\u5927\u304d\u3055\u306e\u540c\u6642\u8a55\u4fa1<\/strong><\/h3>\n\n<p class=\"wp-block-paragraph\" style=\"font-size:18px;line-height:1.9;margin:0 0 18px;\">L2\u6b63\u5247\u5316\u306f\u3001\u4e88\u6e2c\u8aa4\u5dee\u3068\u4fc2\u6570\u306e\u5927\u304d\u3055\u3092\u540c\u6642\u306b\u8a55\u4fa1\u3057\u307e\u3059\u3002<\/p>\n<ul class=\"wp-block-list\" style=\"padding-left:1.25em;margin-left:0;line-height:1.9;margin:0 0 18px;\"><li>\u4e88\u6e2c\u8aa4\u5dee\u306e\u7e2e\u5c0f<\/li><li>\u03bb\u306b\u3088\u308bL2\u30da\u30ca\u30eb\u30c6\u30a3\u306e\u5f37\u3055\u306e\u8abf\u6574<\/li><li>\u4e00\u90e8\u306e\u4fc2\u6570\u3060\u3051\u3067\u306a\u304f\u3001\u4fc2\u6570\u5168\u4f53\u3092\u7e2e\u3081\u308b\u50cd\u304d<\/li><\/ul>\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:18px;line-height:1.9;margin:0 0 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class=\"wp-block-paragraph\" style=\"font-size:18px;line-height:1.9;margin:0 0 18px;\">\u03bb\u306e\u5927\u304d\u3055\u306f\u3001\u30c7\u30fc\u30bf\u3078\u306e\u9069\u5408\u3068\u5358\u7d14\u5316\u306e\u30d0\u30e9\u30f3\u30b9\u3092\u6c7a\u3081\u307e\u3059\u3002\u5c0f\u3055\u3059\u304e\u308b\u03bb\u3067\u306f\u6b63\u5247\u5316\u306e\u52b9\u679c\u304c\u5f31\u304f\u3001\u904e\u5b66\u7fd2\u304c\u6b8b\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:18px;line-height:1.9;margin:0 0 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18px;\">\u7dda\u5f62\u30e2\u30c7\u30eb\u3067\u306f\u3001\u7279\u5fb4\u91cf\u306b\u639b\u304b\u308b\u4fc2\u6570\u3068\u5207\u7247\u3092\u5206\u3051\u3066\u6271\u3046\u306e\u304c\u4e00\u822c\u7684\u3067\u3059\u3002\u5207\u7247\u307e\u3067\u5f37\u304f\u7e2e\u3081\u308b\u3068\u3001\u7279\u5fb4\u91cf\u3092\u5e73\u5747\u4e2d\u5fc3\u5316\u3057\u3066\u3044\u306a\u3044\u5834\u5408\u306b\u4e88\u6e2c\u306e\u57fa\u6e96\u5024\u304c\u4e0d\u81ea\u7136\u306b\u305a\u308c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b\u305f\u3081\u3001\u591a\u304f\u306e\u5b9f\u88c5\u3067\u306f\u5207\u7247\u3092\u6b63\u5247\u5316\u306e\u5bfe\u8c61\u304b\u3089\u5916\u3057\u307e\u3059\u3002<\/p>\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:18px;line-height:1.9;margin:0 0 18px;\">\u305f\u3060\u3057\u3001\u30e9\u30a4\u30d6\u30e9\u30ea\u3084\u81ea\u4f5c\u5b9f\u88c5\u3067\u6271\u3044\u304c\u9055\u3046\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u4f7f\u7528\u3059\u308bAPI\u306e\u4ed5\u69d8\u3068\u3001\u524d\u51e6\u7406\u306e\u6709\u7121\u3092\u5b9f\u9a13\u8a18\u9332\u306b\u6b8b\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n\n\n<div class=\"wp-block-group article-point-box is-layout-flow wp-block-group-is-layout-flow\" style=\"border-color:#d7edf8;border-width:1px;border-style:solid;border-radius:2px;margin-top:24px;margin-bottom:24px;overflow:hidden;\">\n\n<p class=\"article-point-box__header wp-block-paragraph\" style=\"background-color:#2083c7;color:#fff;text-align:center;padding:10px 12px;margin:0;font-size:18px;line-height:1.5;font-weight:700;\"><strong>\u30dd\u30a4\u30f3\u30c8<\/strong><\/p>\n\n\n<p class=\"wp-block-paragraph\" style=\"background-color:#fff;padding:16px;margin:0;font-size:18px;line-height:1.9;\">\u03bb\u306f\u672a\u77e5\u30c7\u30fc\u30bf\u3092\u6a21\u3057\u305f\u691c\u8a3c\u624b\u9806\u3067\u9078\u3073\u3001\u30c7\u30fc\u30bf\u3078\u306e\u9069\u5408\u3068\u5358\u7d14\u5316\u306e\u30d0\u30e9\u30f3\u30b9\u3092\u898b\u307e\u3059\u3002\u5207\u7247\u3092\u6b63\u5247\u5316\u3059\u308b\u304b\u306f\u3001\u4f7f\u3046\u30e9\u30a4\u30d6\u30e9\u30ea\u306e\u4ed5\u69d8\u3092\u78ba\u304b\u3081\u3066\u6c7a\u3081\u307e\u3059\u3002<\/p>\n\n<\/div>\n\n\n\n<h2 id=\"l2-vs-l1\" class=\"wp-block-heading\" style=\"background:#c3d3e1; padding:12px 20px; margin:32px 0 16px; color:#222;\"><strong>L2\u6b63\u5247\u5316\u3068L1\u6b63\u5247\u5316\u306e\u9055\u3044\uff5c\u7e2e\u5c0f\u3068\u30b9\u30d1\u30fc\u30b9\u5316<\/strong><\/h2>\n\n<figure class=\"wp-block-image aligncenter size-full\" style=\"max-width:640px;margin:24px auto;\"><img loading=\"lazy\" decoding=\"async\" data-attachment-id=\"76785\" data-permalink=\"https:\/\/www.ripla.co.jp\/blog\/image-2-1558\/\" data-orig-file=\"https:\/\/www.ripla.co.jp\/blog\/wp-content\/uploads\/2026\/09\/image-2-1558.webp\" data-orig-size=\"1672,941\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;,&quot;alt&quot;:&quot;&quot;}\" data-image-title=\"L2\u6b63\u5247\u5316\u306f\u5168\u4f53\u3092\u7e2e\u3081L1\u6b63\u5247\u5316\u306f\u4e00\u90e8\u306e\u4fc2\u6570\u30920\u306b\u3057\u3084\u3059\u3044\" data-image-description=\"\" data-image-caption=\"&lt;p&gt;\u76ee\u7684\u306b\u5fdc\u3058\u3066\u6b63\u5247\u5316\u306e\u7a2e\u985e\u3092\u9078\u3076&lt;\/p&gt;\n\" data-large-file=\"https:\/\/www.ripla.co.jp\/blog\/wp-content\/uploads\/2026\/09\/image-2-1558-1024x576.webp\" src=\"https:\/\/www.ripla.co.jp\/blog\/wp-content\/uploads\/2026\/09\/image-2-1558.webp\" alt=\"L2\u6b63\u5247\u5316\u3068L1\u6b63\u5247\u5316\u306e\u4fc2\u6570\u306e\u7e2e\u5c0f\u3068\u30b9\u30d1\u30fc\u30b9\u5316\u3092\u5de6\u53f3\u3067\u6bd4\u8f03\u3059\u308b\u56f3\" title=\"L2\u6b63\u5247\u5316\u306f\u5168\u4f53\u3092\u7e2e\u3081L1\u6b63\u5247\u5316\u306f\u4e00\u90e8\u306e\u4fc2\u6570\u30920\u306b\u3057\u3084\u3059\u3044\" class=\"wp-image-76785\" width=\"1672\" height=\"941\" style=\"display:block;width:100%;height:auto;max-width:640px;\" srcset=\"https:\/\/www.ripla.co.jp\/blog\/wp-content\/uploads\/2026\/09\/image-2-1558.webp 1672w, https:\/\/www.ripla.co.jp\/blog\/wp-content\/uploads\/2026\/09\/image-2-1558-300x169.webp 300w, https:\/\/www.ripla.co.jp\/blog\/wp-content\/uploads\/2026\/09\/image-2-1558-1024x576.webp 1024w, https:\/\/www.ripla.co.jp\/blog\/wp-content\/uploads\/2026\/09\/image-2-1558-768x432.webp 768w, https:\/\/www.ripla.co.jp\/blog\/wp-content\/uploads\/2026\/09\/image-2-1558-1536x864.webp 1536w\" sizes=\"auto, (max-width: 1672px) 100vw, 1672px\" \/><figcaption class=\"wp-element-caption\" style=\"font-size:12px;line-height:1.6;color:#777;margin-top:8px;text-align:center;\">\u76ee\u7684\u306b\u5fdc\u3058\u3066\u6b63\u5247\u5316\u306e\u7a2e\u985e\u3092\u9078\u3076<\/figcaption><\/figure>\n\n\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:18px;line-height:1.9;margin:0 0 18px;\">L1\u6b63\u5247\u5316\u306f\u3001\u91cd\u307f\u306e\u7d76\u5bfe\u5024\u306e\u548c\u3092\u30da\u30ca\u30eb\u30c6\u30a3\u306b\u3057\u307e\u3059\u3002L1\u3067\u306f\u4e00\u90e8\u306e\u4fc2\u6570\u304c\u3061\u3087\u3046\u30690\u306b\u306a\u308a\u3084\u3059\u3044\u305f\u3081\u3001\u7279\u5fb4\u91cf\u9078\u629e\u3084\u30b9\u30d1\u30fc\u30b9\u306a\u30e2\u30c7\u30eb\u3092\u5f97\u305f\u3044\u3068\u304d\u306b\u4f7f\u308f\u308c\u307e\u3059\u3002<\/p>\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:18px;line-height:1.9;margin:0 0 18px;\">\u4e00\u65b9\u3001L2\u306f\u76f8\u95a2\u3057\u305f\u7279\u5fb4\u91cf\u3078\u4fc2\u6570\u3092\u5206\u6563\u3055\u305b\u306a\u304c\u3089\u5168\u4f53\u3092\u7e2e\u3081\u308b\u50be\u5411\u304c\u3042\u308a\u307e\u3059\u3002\u3069\u3061\u3089\u304c\u9069\u3057\u3066\u3044\u308b\u304b\u306f\u3001\u7279\u5fb4\u91cf\u306e\u6027\u8cea\u3001\u8aac\u660e\u306e\u4ed5\u65b9\u3001\u4e88\u6e2c\u306e\u5b89\u5b9a\u6027\u3092\u8e0f\u307e\u3048\u3066\u9078\u3073\u307e\u3059\u3002\u8a08\u7b97\u30b3\u30b9\u30c8\u3082\u5408\u308f\u305b\u3066\u898b\u307e\u3059\u3002<\/p>\n\n\n\n<h3 id=\"l2-elastic-net\" class=\"wp-block-heading\" style=\"border-left:4px solid #0693e3;padding-left:16px;\"><strong>Elastic Net\u306b\u3088\u308bL1\u3068L2\u306e\u7d44\u307f\u5408\u308f\u305b<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:18px;line-height:1.9;margin:0 0 18px;\">L1\u3068L2\u3092\u540c\u6642\u306b\u4f7f\u3046Elastic Net\u306f\u3001\u30b9\u30d1\u30fc\u30b9\u5316\u3068\u4fc2\u6570\u306e\u5b89\u5b9a\u5316\u306e\u4e21\u65b9\u3092\u72d9\u3046\u65b9\u6cd5\u3067\u3059\u3002\u7279\u306b\u3001\u5f37\u304f\u76f8\u95a2\u3057\u305f\u7279\u5fb4\u91cf\u304c\u591a\u3044\u3068\u304d\u3001L1\u3060\u3051\u3067\u306f\u3069\u308c\u304b\u4e00\u3064\u3092\u9078\u3076\u7d50\u679c\u304c\u5206\u5272\u3054\u3068\u306b\u5909\u308f\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:18px;line-height:1.9;margin:0 0 18px;\">\u305d\u3053\u3067\u3001L2\u6210\u5206\u3092\u52a0\u3048\u308b\u3068\u3001\u95a2\u9023\u3059\u308b\u7279\u5fb4\u91cf\u3078\u91cd\u307f\u3092\u5206\u3051\u3066\u6301\u305f\u305b\u308b\u4f59\u5730\u304c\u751f\u307e\u308c\u307e\u3059\u3002\u6b63\u5247\u5316\u306e\u7a2e\u985e\u3092\u5897\u3084\u3059\u307b\u3069\u8abf\u6574\u5bfe\u8c61\u3082\u5897\u3048\u308b\u305f\u3081\u3001\u691c\u8a3c\u30c7\u30fc\u30bf\u3067\u6bd4\u8f03\u3057\u3001\u63a1\u7528\u7406\u7531\u3092\u8aac\u660e\u3067\u304d\u308b\u3088\u3046\u306b\u3057\u307e\u3059\u3002<\/p>\n\n\n\n\n\n<div class=\"wp-block-group article-point-box is-layout-flow wp-block-group-is-layout-flow\" style=\"border-color:#d7edf8;border-width:1px;border-style:solid;border-radius:2px;margin-top:24px;margin-bottom:24px;overflow:hidden;\">\n\n<p class=\"article-point-box__header wp-block-paragraph\" style=\"background-color:#2083c7;color:#fff;text-align:center;padding:10px 12px;margin:0;font-size:18px;line-height:1.5;font-weight:700;\"><strong>\u30dd\u30a4\u30f3\u30c8<\/strong><\/p>\n\n\n<p class=\"wp-block-paragraph\" style=\"background-color:#fff;padding:16px;margin:0;font-size:18px;line-height:1.9;\">\u7279\u5fb4\u91cf\u9078\u629e\u304c\u76ee\u7684\u306a\u3089L1\u3001\u7279\u5fb4\u91cf\u3092\u6b8b\u3057\u3066\u4fc2\u6570\u3092\u5b89\u5b9a\u3055\u305b\u305f\u3044\u306a\u3089L2\u304c\u5019\u88dc\u3067\u3059\u3002\u4e21\u65b9\u306e\u6027\u8cea\u304c\u8981\u308b\u3068\u304d\u306fElastic Net\u3092\u691c\u8a0e\u3057\u307e\u3059\u3002<\/p>\n\n<\/div>\n\n\n\n<h2 id=\"l2-scaling\" class=\"wp-block-heading\" style=\"background:#c3d3e1; padding:12px 20px; margin:32px 0 16px; color:#222;\"><strong>L2\u6b63\u5247\u5316\u3067\u91cd\u8981\u306a\u524d\u51e6\u7406\uff5c\u7279\u5fb4\u91cf\u306e\u5c3a\u5ea6\u8abf\u6574<\/strong><\/h2>\n\n<figure class=\"wp-block-image aligncenter size-full\" style=\"max-width:640px;margin:24px auto;\"><img loading=\"lazy\" decoding=\"async\" data-attachment-id=\"76679\" data-permalink=\"https:\/\/www.ripla.co.jp\/blog\/image-3-1523\/\" data-orig-file=\"https:\/\/www.ripla.co.jp\/blog\/wp-content\/uploads\/2026\/09\/image-3-1523.webp\" data-orig-size=\"1672,941\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;,&quot;alt&quot;:&quot;&quot;}\" data-image-title=\"L2\u6b63\u5247\u5316\u3067\u306f\u5b66\u7fd2\u30c7\u30fc\u30bf\u3060\u3051\u3067\u524d\u51e6\u7406\u3092\u9069\u5408\u3057\u5c3a\u5ea6\u3092\u305d\u308d\u3048\u308b\" data-image-description=\"\" data-image-caption=\"&lt;p&gt;\u691c\u8a3c\u30c7\u30fc\u30bf\u306e\u60c5\u5831\u3092\u524d\u51e6\u7406\u3078\u6df7\u305c\u306a\u3044&lt;\/p&gt;\n\" data-large-file=\"https:\/\/www.ripla.co.jp\/blog\/wp-content\/uploads\/2026\/09\/image-3-1523-1024x576.webp\" src=\"https:\/\/www.ripla.co.jp\/blog\/wp-content\/uploads\/2026\/09\/image-3-1523.webp\" alt=\"\u5b66\u7fd2\u30c7\u30fc\u30bf\u304b\u3089\u524d\u51e6\u7406\u3068\u6a19\u6e96\u5316\u3092\u7d4c\u3066\u30e2\u30c7\u30eb\u3078\u9032\u3080\u6d41\u308c\u3068\u691c\u8a3c\u30c7\u30fc\u30bf\u306e\u6271\u3044\u3092\u793a\u3059\u56f3\" title=\"L2\u6b63\u5247\u5316\u3067\u306f\u5b66\u7fd2\u30c7\u30fc\u30bf\u3060\u3051\u3067\u524d\u51e6\u7406\u3092\u9069\u5408\u3057\u5c3a\u5ea6\u3092\u305d\u308d\u3048\u308b\" class=\"wp-image-76679\" width=\"1672\" height=\"941\" style=\"display:block;width:100%;height:auto;max-width:640px;\" srcset=\"https:\/\/www.ripla.co.jp\/blog\/wp-content\/uploads\/2026\/09\/image-3-1523.webp 1672w, https:\/\/www.ripla.co.jp\/blog\/wp-content\/uploads\/2026\/09\/image-3-1523-300x169.webp 300w, https:\/\/www.ripla.co.jp\/blog\/wp-content\/uploads\/2026\/09\/image-3-1523-1024x576.webp 1024w, https:\/\/www.ripla.co.jp\/blog\/wp-content\/uploads\/2026\/09\/image-3-1523-768x432.webp 768w, https:\/\/www.ripla.co.jp\/blog\/wp-content\/uploads\/2026\/09\/image-3-1523-1536x864.webp 1536w\" sizes=\"auto, (max-width: 1672px) 100vw, 1672px\" \/><figcaption class=\"wp-element-caption\" style=\"font-size:12px;line-height:1.6;color:#777;margin-top:8px;text-align:center;\">\u691c\u8a3c\u30c7\u30fc\u30bf\u306e\u60c5\u5831\u3092\u524d\u51e6\u7406\u3078\u6df7\u305c\u306a\u3044<\/figcaption><\/figure>\n\n\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:18px;line-height:1.9;margin:0 0 18px;\">L2\u6b63\u5247\u5316\u306f\u4fc2\u6570\u306e\u5927\u304d\u3055\u306b\u76f4\u63a5\u30da\u30ca\u30eb\u30c6\u30a3\u3092\u304b\u3051\u307e\u3059\u3002\u305d\u306e\u305f\u3081\u3001\u7279\u5fb4\u91cf\u306e\u5358\u4f4d\u304c\u7570\u306a\u308b\u3068\u3001\u540c\u3058\u60c5\u5831\u91cf\u3067\u3082\u4fc2\u6570\u306e\u6570\u5024\u304c\u5909\u308f\u308a\u3001\u6b63\u5247\u5316\u306e\u52b9\u304d\u65b9\u306b\u5dee\u304c\u51fa\u307e\u3059\u3002<\/p>\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:18px;line-height:1.9;margin:0 0 18px;\">\u305f\u3068\u3048\u3070\u3001\u5e74\u9f62\u3092\u5e74\u5358\u4f4d\u3001\u58f2\u4e0a\u3092\u5186\u5358\u4f4d\u306e\u307e\u307e\u540c\u3058\u30e2\u30c7\u30eb\u3078\u5165\u308c\u308b\u3068\u3001\u5c3a\u5ea6\u306e\u5927\u304d\u306a\u7279\u5fb4\u91cf\u306e\u4fc2\u6570\u304c\u76f8\u5bfe\u7684\u306b\u5c0f\u3055\u304f\u898b\u3048\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u305d\u3053\u3067\u3001\u6a19\u6e96\u5316\u3084\u9069\u5207\u306a\u5909\u63db\u3092\u691c\u8a0e\u3057\u3001\u5909\u63db\u306e\u30d1\u30e9\u30e1\u30fc\u30bf\u306f\u5b66\u7fd2\u30c7\u30fc\u30bf\u3060\u3051\u3067\u63a8\u5b9a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:18px;line-height:1.9;margin:0 0 18px;\">\u6a19\u6e96\u5316\u306e\u5e73\u5747\u3068\u6a19\u6e96\u504f\u5dee\u306f\u3001\u5b66\u7fd2\u30c7\u30fc\u30bf\u3060\u3051\u304b\u3089\u8a08\u7b97\u3057\u307e\u3059\u3002\u691c\u8a3c\u30c7\u30fc\u30bf\u306e\u5206\u5e03\u3092\u4f7f\u3046\u3068\u3001\u691c\u8a3c\u60c5\u5831\u304c\u5b66\u7fd2\u51e6\u7406\u3078\u6f0f\u308c\u3066\u3057\u307e\u3046\u304b\u3089\u3067\u3059\u3002<\/p>\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:18px;line-height:1.9;margin:0 0 18px;\">\u524d\u51e6\u7406\u3068\u30e2\u30c7\u30eb\u3092\u4e00\u3064\u306e\u30d1\u30a4\u30d7\u30e9\u30a4\u30f3\u3068\u3057\u3066\u6271\u3044\u3001\u5206\u5272\u306e\u305f\u3073\u306b\u5b66\u7fd2\u5074\u3060\u3051\u3067\u5909\u63db\u3092\u9069\u5408\u3055\u305b\u307e\u3059\u3002\u30ab\u30c6\u30b4\u30ea\u5909\u6570\u306e\u30a8\u30f3\u30b3\u30fc\u30c9\u3084\u6b20\u640d\u5024\u88dc\u5b8c\u3001\u5916\u308c\u5024\u51e6\u7406\u3082\u3001\u3053\u306e\u4ed5\u7d44\u307f\u306b\u542b\u3081\u3066\u7ba1\u7406\u3057\u307e\u3059\u3002<\/p>\n\n\n\n\n\n<div class=\"wp-block-group article-point-box is-layout-flow wp-block-group-is-layout-flow\" style=\"border-color:#d7edf8;border-width:1px;border-style:solid;border-radius:2px;margin-top:24px;margin-bottom:24px;overflow:hidden;\">\n\n<p class=\"article-point-box__header wp-block-paragraph\" style=\"background-color:#2083c7;color:#fff;text-align:center;padding:10px 12px;margin:0;font-size:18px;line-height:1.5;font-weight:700;\"><strong>\u30dd\u30a4\u30f3\u30c8<\/strong><\/p>\n\n\n<p class=\"wp-block-paragraph\" style=\"background-color:#fff;padding:16px;margin:0;font-size:18px;line-height:1.9;\">\u5358\u4f4d\u306e\u9055\u3046\u7279\u5fb4\u91cf\u3092\u540c\u3058\u30e2\u30c7\u30eb\u306b\u5165\u308c\u308b\u524d\u306b\u3001\u5c3a\u5ea6\u3092\u305d\u308d\u3048\u308b\u304b\u3092\u5224\u65ad\u3057\u307e\u3059\u3002\u5e73\u5747\u3084\u5206\u6563\u306e\u8a08\u7b97\u306f\u3001\u691c\u8a3c\u30c7\u30fc\u30bf\u3092\u542b\u3081\u305a\u5b66\u7fd2\u5074\u3060\u3051\u3067\u884c\u3044\u307e\u3059\u3002<\/p>\n\n<\/div>\n\n\n\n<h2 id=\"l2-tuning\" class=\"wp-block-heading\" style=\"background:#c3d3e1; padding:12px 20px; margin:32px 0 16px; color:#222;\"><strong>L2\u6b63\u5247\u5316\u4fc2\u6570\u306e\u6c7a\u3081\u65b9\uff5c\u4ea4\u5dee\u691c\u8a3c\u3068\u5b9f\u52d9\u7684\u306a\u63a2\u7d22<\/strong><\/h2>\n\n\n\n<h3 id=\"l2-log-search\" class=\"wp-block-heading\" style=\"border-left:4px solid #0693e3;padding-left:16px;\"><strong>\u03bb\u306e\u5bfe\u6570\u30b9\u30b1\u30fc\u30eb\u306b\u3088\u308b\u5019\u88dc\u8a2d\u5b9a<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:18px;line-height:1.9;margin:0 0 18px;\">\u6b63\u5247\u5316\u4fc2\u6570\u306f\u30010.0001\u30010.001\u30010.01\u30010.1\u30011\u300110\u306e\u3088\u3046\u306b\u6841\u3092\u307e\u305f\u3050\u5019\u88dc\u3092\u5bfe\u6570\u9593\u9694\u3067\u8a66\u3059\u3068\u3001\u52b9\u679c\u306e\u5909\u5316\u3092\u6349\u3048\u3084\u3059\u304f\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:18px;line-height:1.9;margin:0 0 18px;\">\u4fc2\u6570\u306e\u8a18\u53f7\u3084API\u306e\u30d1\u30e9\u30e1\u30fc\u30bf\u540d\u304c\u7570\u306a\u308b\u70b9\u306b\u306f\u6ce8\u610f\u304c\u5fc5\u8981\u3067\u3059\u3002\u305f\u3068\u3048\u3070\u3001\u30ea\u30c3\u30b8\u56de\u5e30\u306ealpha\u3068\u30ed\u30b8\u30b9\u30c6\u30a3\u30c3\u30af\u56de\u5e30\u306eC\u3067\u306f\u3001\u5024\u3068\u6b63\u5247\u5316\u306e\u5f37\u3055\u306e\u5411\u304d\u304c\u9006\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:18px;line-height:1.9;margin:0 0 18px;\">\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u3067\u5024\u306e\u5411\u304d\u3092\u78ba\u304b\u3081\u305f\u3046\u3048\u3067\u3001\u958b\u767a\u4f1a\u793e\u306f\u5b9f\u9a13\u8868\u306b\u5b9f\u969b\u306e\u30da\u30ca\u30eb\u30c6\u30a3\u306e\u5f37\u3055\u3092\u4f75\u8a18\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h3 id=\"l2-cross-validation\" class=\"wp-block-heading\" style=\"border-left:4px solid #0693e3;padding-left:16px;\"><strong>\u4ea4\u5dee\u691c\u8a3c\u306b\u3088\u308b\u672a\u77e5\u30c7\u30fc\u30bf\u3078\u306e\u6027\u80fd\u6bd4\u8f03<\/strong><\/h3>\n\n<p class=\"wp-block-paragraph\" style=\"font-size:18px;line-height:1.9;margin:0 0 18px;\">\u03bb\u306e\u5019\u88dc\u306f\u3001\u4ea4\u5dee\u691c\u8a3c\u3067\u540c\u3058\u8a55\u4fa1\u6761\u4ef6\u306e\u3082\u3068\u306b\u6bd4\u3079\u307e\u3059\u3002<\/p>\n<ul class=\"wp-block-list\" style=\"padding-left:1.25em;margin-left:0;line-height:1.9;margin:0 0 18px;\"><li>\u8a13\u7df4\u30c7\u30fc\u30bf\u306e\u8907\u6570\u5206\u5272<\/li><li>\u5404\u8a13\u7df4\u5206\u5272\u306e\u4e2d\u3060\u3051\u3067\u884c\u3046\u524d\u51e6\u7406\u306e\u9069\u5408<\/li><li>\u5404\u5206\u5272\u306e\u691c\u8a3c\u6307\u6a19\u306e\u96c6\u8a08\u3068\u6bd4\u8f03<\/li><\/ul>\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:18px;line-height:1.9;margin:0 0 18px;\">\u4fc2\u6570\u306e\u5019\u88dc\u3092\u9078\u3076\u3068\u304d\u306f\u3001\u8a13\u7df4\u8aa4\u5dee\u3060\u3051\u3067\u306a\u304f\u4ea4\u5dee\u691c\u8a3c\u306e\u30b9\u30b3\u30a2\u3092\u6bd4\u8f03\u3057\u307e\u3059\u3002\u4e00\u3064\u306e\u5206\u5272\u3060\u3051\u3067\u9078\u3076\u3068\u3001\u305f\u307e\u305f\u307e\u305d\u306e\u5206\u5272\u306b\u5408\u3063\u305f\u5024\u3092\u9078\u3093\u3067\u3057\u307e\u3046\u304a\u305d\u308c\u304c\u3042\u308b\u305f\u3081\u3067\u3059\u3002<\/p>\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:18px;line-height:1.9;margin:0 0 18px;\">\u5206\u985e\u3067\u306f\u30af\u30e9\u30b9\u6bd4\u7387\u3092\u4fdd\u3064\u5c64\u5316\u5206\u5272\u3001\u6642\u7cfb\u5217\u3067\u306f\u672a\u6765\u3092\u4f7f\u308f\u306a\u3044\u6642\u7cfb\u5217\u5206\u5272\u3001\u540c\u4e00\u9867\u5ba2\u304c\u8907\u6570\u884c\u3042\u308b\u5834\u5408\u306f\u30b0\u30eb\u30fc\u30d7\u5206\u5272\u3092\u4f7f\u3046\u306a\u3069\u3001\u696d\u52d9\u306e\u4e88\u6e2c\u5358\u4f4d\u306b\u5408\u308f\u305b\u307e\u3059\u3002<\/p>\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:18px;line-height:1.9;margin:0 0 18px;\">\u6700\u7d42\u8a55\u4fa1\u7528\u306e\u30c6\u30b9\u30c8\u30c7\u30fc\u30bf\u306f\u3001\u03bb\u306e\u9078\u629e\u3084\u7279\u5fb4\u91cf\u306e\u6bd4\u8f03\u306b\u306f\u4f7f\u308f\u306a\u3044\u3067\u304f\u3060\u3055\u3044\u3002\u4ea4\u5dee\u691c\u8a3c\u3092\u4f55\u5ea6\u3082\u898b\u3066\u8a2d\u8a08\u3092\u8abf\u6574\u3059\u308b\u3068\u3001\u30e2\u30c7\u30eb\u304c\u691c\u8a3c\u30b9\u30b3\u30a2\u306b\u3082\u9069\u5408\u3057\u3066\u3057\u307e\u3044\u307e\u3059\u3002\u305d\u306e\u305f\u3081\u3001\u6700\u7d42\u7684\u306a\u30c6\u30b9\u30c8\u306f\u3001\u30e2\u30c7\u30eb\u3068\u6b63\u5247\u5316\u4fc2\u6570\u3001\u524d\u51e6\u7406\u304c\u56fa\u307e\u3063\u305f\u5f8c\u306b\u4e00\u5ea6\u3060\u3051\u5b9f\u65bd\u3059\u308b\u304b\u3001\u5fc5\u8981\u306b\u5fdc\u3058\u3066\u5165\u308c\u5b50\u4ea4\u5dee\u691c\u8a3c\u3092\u691c\u8a0e\u3057\u307e\u3059\u3002<\/p>\n\n\n\n\n\n<div class=\"wp-block-group article-point-box is-layout-flow wp-block-group-is-layout-flow\" style=\"border-color:#d7edf8;border-width:1px;border-style:solid;border-radius:2px;margin-top:24px;margin-bottom:24px;overflow:hidden;\">\n\n<p class=\"article-point-box__header wp-block-paragraph\" style=\"background-color:#2083c7;color:#fff;text-align:center;padding:10px 12px;margin:0;font-size:18px;line-height:1.5;font-weight:700;\"><strong>\u30dd\u30a4\u30f3\u30c8<\/strong><\/p>\n\n\n<p class=\"wp-block-paragraph\" style=\"background-color:#fff;padding:16px;margin:0;font-size:18px;line-height:1.9;\">\u03bb\u306f\u5bfe\u6570\u30b9\u30b1\u30fc\u30eb\u306e\u5019\u88dc\u3092\u4ea4\u5dee\u691c\u8a3c\u3067\u6bd4\u3079\u3001\u524d\u51e6\u7406\u3092\u542b\u3081\u3066\u8a55\u4fa1\u3057\u307e\u3059\u3002\u30e9\u30a4\u30d6\u30e9\u30ea\u3054\u3068\u306b\u5024\u3068\u5f37\u3055\u306e\u95a2\u4fc2\u304c\u9055\u3046\u305f\u3081\u3001\u5b9f\u9a13\u8868\u306b\u306f\u5b9f\u969b\u306e\u5f37\u3055\u3092\u4f75\u8a18\u3057\u307e\u3059\u3002<\/p>\n\n<\/div>\n\n\n\n<h2 id=\"l2-implementation\" class=\"wp-block-heading\" style=\"background:#c3d3e1; padding:12px 20px; margin:32px 0 16px; color:#222;\"><strong>L2\u6b63\u5247\u5316\u306e\u5b9f\u88c5\u4f8b\uff5c\u524d\u51e6\u7406\u3068\u30e2\u30c7\u30eb\u306e\u4e00\u4f53\u691c\u8a3c<\/strong><\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code># scikit-learn\u306e\u6982\u5ff5\u4f8b\uff08\u6570\u5024\u7279\u5fb4\u91cf\u3092\u6a19\u6e96\u5316\u3057\u3066\u30ea\u30c3\u30b8\u56de\u5e30\u3092\u8a55\u4fa1\uff09\nfrom sklearn.pipeline import make_pipeline\nfrom sklearn.preprocessing import StandardScaler\nfrom sklearn.linear_model import Ridge\nfrom sklearn.model_selection import GridSearchCV\n\npipeline = make_pipeline(StandardScaler(), Ridge())\nsearch = GridSearchCV(\n    pipeline,\n    {\"ridge__alpha\": [0.001, 0.01, 0.1, 1, 10]},\n    cv=5,\n    scoring=\"neg_mean_absolute_error\",\n)\nsearch.fit(X_train, y_train)\nprediction = search.predict(X_test)<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:18px;line-height:1.9;margin:0 0 18px;\">\u3053\u306e\u4f8b\u3067\u306f\u3001\u6a19\u6e96\u5316\u3068\u30ea\u30c3\u30b8\u56de\u5e30\u3092\u30d1\u30a4\u30d7\u30e9\u30a4\u30f3\u306b\u307e\u3068\u3081\u3001\u4ea4\u5dee\u691c\u8a3c\u306e\u5404\u5b66\u7fd2\u5206\u5272\u3067\u6a19\u6e96\u5316\u3092\u9069\u5408\u3057\u307e\u3059\u3002\u5b9f\u969b\u306b\u306f\u3001\u958b\u767a\u4f1a\u793e\u304c\u30c7\u30fc\u30bf\u306e\u9806\u5e8f\u3084\u5206\u5272\u65b9\u6cd5\u3001\u6b20\u640d\u51e6\u7406\u3092\u696d\u52d9\u306b\u5408\u308f\u305b\u3066\u8a2d\u5b9a\u3057\u307e\u3059\u3002\u8a55\u4fa1\u6307\u6a19\u3082\u3001\u696d\u52d9\u3067\u91cd\u8996\u3059\u308b\u70b9\u306b\u6cbf\u3063\u3066\u9078\u3093\u3067\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:18px;line-height:1.9;margin:0 0 18px;\">\u5206\u985e\u3067\u3042\u308c\u3070\u3001\u30ed\u30b8\u30b9\u30c6\u30a3\u30c3\u30af\u56de\u5e30\u306a\u3069\u3078\u7f6e\u304d\u63db\u3048\u307e\u3059\u3002\u30af\u30e9\u30b9\u4e0d\u5747\u8861\u304c\u3042\u308b\u5834\u5408\u306f\u3001\u6b63\u89e3\u7387\u4ee5\u5916\u306e\u6307\u6a19\u3082\u78ba\u8a8d\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:18px;line-height:1.9;margin:0 0 18px;\">\u307e\u305f\u3001\u6b63\u5247\u5316\u3092\u4f7f\u3046\u30e2\u30c7\u30eb\u3067\u306f\u3001\u4fc2\u6570\u3092\u5358\u7d14\u306b\u300c\u91cd\u8981\u5ea6\u300d\u3068\u65ad\u5b9a\u305b\u305a\u3001\u89e3\u91c8\u306e\u524d\u63d0\u3092\u78ba\u304b\u3081\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u6a19\u6e96\u5316\u5f8c\u306e\u4fc2\u6570\u306f\u5358\u4f4d\u304c\u305d\u308d\u3044\u307e\u3059\u304c\u3001\u76f8\u95a2\u3057\u305f\u7279\u5fb4\u91cf\u3067\u306f\u4fc2\u6570\u304c\u5206\u62c5\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:18px;line-height:1.9;margin:0 0 18px;\">\u4fc2\u6570\u306e\u7b26\u53f7\u3084\u5927\u304d\u3055\u3092\u8aad\u3080\u3068\u304d\u306f\u3001\u7279\u5fb4\u91cf\u306e\u5b9a\u7fa9\u3084\u6b20\u640d\u51e6\u7406\u3001\u4ea4\u4e92\u4f5c\u7528\u306b\u52a0\u3048\u3001\u5b66\u7fd2\u671f\u9593\u3082\u78ba\u8a8d\u3057\u307e\u3059\u3002\u4e88\u6e2c\u6027\u80fd\u3068\u8aac\u660e\u306e\u76ee\u7684\u304c\u7570\u306a\u308b\u5834\u5408\u306f\u3001\u4fc2\u6570\u306e\u5b89\u5b9a\u6027\u3092\u5206\u5272\u3054\u3068\u306b\u6bd4\u3079\u307e\u3059\u3002<\/p>\n\n\n\n<h2 id=\"l2-neural-network\" class=\"wp-block-heading\" style=\"background:#c3d3e1; padding:12px 20px; margin:32px 0 16px; color:#222;\"><strong>\u30cb\u30e5\u30fc\u30e9\u30eb\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3067\u306eL2\u6b63\u5247\u5316\uff5c\u91cd\u307f\u6e1b\u8870\u306e\u8003\u3048\u65b9<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:18px;line-height:1.9;margin:0 0 18px;\">\u30cb\u30e5\u30fc\u30e9\u30eb\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3067\u306f\u3001\u640d\u5931\u95a2\u6570\u306b\u91cd\u307f\u306e\u4e8c\u4e57\u548c\u3092\u52a0\u3048\u308b\u65b9\u6cd5\u3068\u3001\u6700\u9069\u5316\u5668\u306e\u66f4\u65b0\u3067\u91cd\u307f\u3092\u6e1b\u8870\u3055\u305b\u308b\u65b9\u6cd5\u304c\u95a2\u9023\u3057\u307e\u3059\u3002<\/p>\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:18px;line-height:1.9;margin:0 0 18px;\">\u5358\u7d14\u306a\u78ba\u7387\u7684\u52fe\u914d\u964d\u4e0b\u3067\u306f\u4f3c\u305f\u6319\u52d5\u306b\u306a\u308a\u307e\u3059\u3002\u4e00\u65b9\u3001Adam\u306a\u3069\u306e\u9069\u5fdc\u7684\u306a\u6700\u9069\u5316\u5668\u3067\u306f\u3001\u52fe\u914d\u3078L2\u9805\u3092\u8db3\u3059\u65b9\u5f0f\u3068\u3001\u91cd\u307f\u6e1b\u8870\u3092\u66f4\u65b0\u304b\u3089\u5206\u96e2\u3059\u308b\u65b9\u5f0f\u3067\u7d50\u679c\u304c\u7570\u306a\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:18px;line-height:1.9;margin:0 0 18px;\">\u958b\u767a\u4f1a\u793e\u306f\u3001PyTorch\u3084TensorFlow\u306eAPI\u3067\u5f15\u6570\u306e\u610f\u5473\u3092\u78ba\u8a8d\u3057\u3001\u5b9f\u9a13\u6761\u4ef6\u306b\u6700\u9069\u5316\u5668\u3001\u5b66\u7fd2\u7387\u3001\u6e1b\u8870\u7387\u3092\u8a18\u9332\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:18px;line-height:1.9;margin:0 0 18px;\">\u5b9f\u969b\u306b\u306f\u3001L2\u306e\u307b\u304b\u306b\u3001\u30c7\u30fc\u30bf\u62e1\u5f35\u3084\u30c9\u30ed\u30c3\u30d7\u30a2\u30a6\u30c8\u3092\u7d44\u307f\u5408\u308f\u305b\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u65e9\u671f\u7d42\u4e86\u3084\u30d0\u30c3\u30c1\u6b63\u898f\u5316\u3068\u91cd\u306d\u308b\u5834\u5408\u3082\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:18px;line-height:1.9;margin:0 0 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class=\"wp-block-paragraph\" style=\"font-size:18px;line-height:1.9;margin:0 0 18px;\">\u5e73\u5747\u30fb\u5206\u6563\u306e\u8a08\u7b97\u3001\u7279\u5fb4\u91cf\u9078\u629e\u3001\u6b20\u640d\u5024\u88dc\u5b8c\u3092\u5168\u30c7\u30fc\u30bf\u3067\u5148\u306b\u884c\u3046\u3068\u3001\u691c\u8a3c\u30c7\u30fc\u30bf\u306e\u60c5\u5831\u304c\u5b66\u7fd2\u5074\u3078\u6df7\u3056\u308a\u307e\u3059\u3002L2\u306e\u6709\u7121\u306b\u304b\u304b\u308f\u3089\u305a\u8a55\u4fa1\u304c\u697d\u89b3\u7684\u306b\u306a\u308a\u307e\u3059\u304c\u3001\u6b63\u5247\u5316\u4fc2\u6570\u3092\u9078\u3076\u3068\u304d\u306b\u306f\u7279\u306b\u5371\u967a\u3067\u3059\u3002<\/p>\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:18px;line-height:1.9;margin:0 0 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18px;\">\u691c\u8a3c\u8aa4\u5dee\u304c\u9ad8\u304f\u3001\u8a13\u7df4\u8aa4\u5dee\u3082\u9ad8\u3044\u5834\u5408\u306f\u3001\u03bb\u304c\u5927\u304d\u3059\u304e\u308b\u3001\u7279\u5fb4\u91cf\u306e\u5c3a\u5ea6\u304c\u4e0d\u9069\u5207\u3001\u30e2\u30c7\u30eb\u306e\u8868\u73fe\u529b\u304c\u4e0d\u8db3\u3057\u3066\u3044\u308b\u306a\u3069\u306e\u539f\u56e0\u304c\u8003\u3048\u3089\u308c\u307e\u3059\u3002\u4fc2\u6570\u304c\u5c0f\u3055\u304f\u306a\u3063\u305f\u3053\u3068\u3092\u6210\u529f\u3068\u307f\u306a\u3055\u305a\u3001\u5b66\u7fd2\u66f2\u7dda\u3068\u6307\u6a19\u3092\u898b\u3066\u5224\u65ad\u3057\u307e\u3059\u3002<\/p>\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:18px;line-height:1.9;margin:0 0 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style=\"background-color:#fff;padding:16px;margin:0;font-size:18px;line-height:1.9;\">\u524d\u51e6\u7406\u306f\u5206\u5272\u524d\u306b\u884c\u308f\u305a\u3001\u5404\u5206\u5272\u306e\u5b66\u7fd2\u90e8\u5206\u3060\u3051\u3067\u9069\u5408\u3055\u305b\u307e\u3059\u3002\u6b63\u5247\u5316\u3092\u5f37\u3081\u3059\u304e\u3066\u3044\u306a\u3044\u304b\u306f\u3001\u5b66\u7fd2\u66f2\u7dda\u3068\u6307\u6a19\u3067\u5207\u308a\u5206\u3051\u3066\u5224\u65ad\u3057\u307e\u3059\u3002<\/p>\n\n<\/div>\n\n\n\n<h2 id=\"l2-choice\" class=\"wp-block-heading\" style=\"background:#c3d3e1; padding:12px 20px; margin:32px 0 16px; color:#222;\"><strong>L2\u6b63\u5247\u5316\u3092\u63a1\u7528\u3059\u308b\u5224\u65ad\u57fa\u6e96\uff5c\u5358\u7d14\u306a\u30d9\u30fc\u30b9\u30e9\u30a4\u30f3\u3068\u306e\u6bd4\u8f03<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:18px;line-height:1.9;margin:0 0 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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<p class=\"wp-block-paragraph\" style=\"font-size:18px;line-height:1.9;margin:0 0 18px;\">scikit-learn\u3068PyTorch\u306eL2\u30fbElastic Net\u95a2\u9023\u8cc7\u6599\u3092\u6319\u3052\u307e\u3059\u3002<\/p>\n\n<ul class=\"wp-block-list\" style=\"padding-left:1.25em;margin-left:0;line-height:1.9;margin:0 0 18px;\">\n<li>scikit-learn User Guide\u300cRidge regression and classification\u300d<br><a href=\"https:\/\/scikit-learn.org\/stable\/modules\/linear_model.html#ridge-regression-and-classification\" target=\"_blank\" rel=\"noopener\">\u516c\u5f0f\u8cc7\u6599<\/a><\/li><li>scikit-learn User Guide\u300cElastic-Net\u300d<br><a href=\"https:\/\/scikit-learn.org\/stable\/modules\/linear_model.html#elastic-net\" target=\"_blank\" rel=\"noopener\">\u516c\u5f0f\u8cc7\u6599<\/a><\/li><li>scikit-learn\u300cPipeline\u300d<br><a href=\"https:\/\/scikit-learn.org\/stable\/modules\/generated\/sklearn.pipeline.Pipeline.html\" target=\"_blank\" rel=\"noopener\">\u516c\u5f0f\u8cc7\u6599<\/a><\/li><li>PyTorch\u300cAdamW\u300d<br><a href=\"https:\/\/pytorch.org\/docs\/stable\/generated\/torch.optim.AdamW.html\" target=\"_blank\" rel=\"noopener\">\u516c\u5f0f\u8cc7\u6599<\/a><\/li>\n<\/ul>\n\n\n\n<h2 id=\"company-intro\" class=\"wp-block-heading\" style=\"background:#c3d3e1; padding:12px 20px; margin:32px 0 16px; color:#222;\"><strong>\u4f1a\u793e\u7d39\u4ecb<\/strong><\/h2>\n\n\n\n<div class=\"wp-block-group is-vertical is-content-justification-stretch is-layout-flex wp-container-core-group-is-layout-898606d5 wp-block-group-is-layout-flex\">\n<p class=\"wp-block-paragraph\">\u682a\u5f0f\u4f1a\u793eripla\u3067\u306f\u3001\u304a\u5ba2\u69d8\u306e\u4e8b\u696d\u30fb\u30e6\u30fc\u30b6\u30fc\u30fb\u696d\u52d9\u306b\u6700\u9069\u5316\u3057\u305f\u30aa\u30fc\u30c0\u30fc\u30e1\u30a4\u30c9\u578b\u30b7\u30b9\u30c6\u30e0\u3092\u3001\u69cb\u60f3\u7b56\u5b9a\u30fb\u8981\u4ef6\u5b9a\u7fa9\u304b\u3089\u958b\u767a\u30fb\u6539\u5584\u307e\u3067\u4e00\u6c17\u901a\u8cab\u3067\u652f\u63f4\u3002\u4e8b\u696d\u4f1a\u793e\u3067IT\u30fbDX\u3092\u7d4c\u9a13\u3057\u305f\u30d7\u30ed\u30d5\u30a7\u30c3\u30b7\u30e7\u30ca\u30eb\u306b\u3088\u308b\u9ad8\u3044\u8981\u4ef6\u5b9a\u7fa9\u529b\u30fb\u30b7\u30b9\u30c6\u30e0\u8a2d\u8a08\u529b\u3092\u6d3b\u304b\u3057\u3001\u4e8b\u696d\u6210\u679c\u306e\u6700\u5927\u5316\u306b\u4f34\u8d70\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-794e3cfa wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" data-attachment-id=\"48106\" data-permalink=\"https:\/\/www.ripla.co.jp\/blog\/ripla-ordermade-system-202608\/\" data-orig-file=\"https:\/\/www.ripla.co.jp\/blog\/wp-content\/uploads\/2026\/08\/ripla-ordermade-system-202608.png\" data-orig-size=\"1672,941\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;,&quot;alt&quot;:&quot;&quot;}\" data-image-title=\"\u304a\u5ba2\u69d8\u306b\u6700\u9069\u5316\u3057\u305f\u30aa\u30fc\u30c0\u30fc\u30e1\u30a4\u30c9\u578b\u30b7\u30b9\u30c6\u30e0\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/www.ripla.co.jp\/blog\/wp-content\/uploads\/2026\/08\/ripla-ordermade-system-202608-1024x576.png\" src=\"https:\/\/www.ripla.co.jp\/blog\/wp-content\/uploads\/2026\/08\/ripla-ordermade-system-202608-1024x576.png\" alt=\"\" class=\"wp-image-48106\" srcset=\"https:\/\/www.ripla.co.jp\/blog\/wp-content\/uploads\/2026\/08\/ripla-ordermade-system-202608-1024x576.png 1024w, https:\/\/www.ripla.co.jp\/blog\/wp-content\/uploads\/2026\/08\/ripla-ordermade-system-202608-300x169.png 300w, https:\/\/www.ripla.co.jp\/blog\/wp-content\/uploads\/2026\/08\/ripla-ordermade-system-202608-768x432.png 768w, https:\/\/www.ripla.co.jp\/blog\/wp-content\/uploads\/2026\/08\/ripla-ordermade-system-202608-1536x864.png 1536w, https:\/\/www.ripla.co.jp\/blog\/wp-content\/uploads\/2026\/08\/ripla-ordermade-system-202608.png 1672w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div>\n<\/div>\n\n\n\n<p class=\"wp-block-paragraph\">\u307e\u305f\u3001\u5f53\u793e\u72ec\u81ea\u306e\u958b\u767a\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u300cBox\u30b7\u30ea\u30fc\u30ba\u300d\u306b\u3088\u308b\u6a19\u6e96\u6a5f\u80fd\u306e\u9ad8\u901f\u958b\u767a\u3068\u3001AI\u99c6\u52d5\u958b\u767a\u306e\u72ec\u81ea\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u300cGoDD\u300d\u306b\u3088\u308b\u72ec\u81ea\u6a5f\u80fd\u306eAI\u5b9f\u88c5\u3092\u7d44\u307f\u5408\u308f\u305b\u308b\u3053\u3068\u3067\u3001\u4f4e\u30b3\u30b9\u30c8\u30fb\u77ed\u671f\u9593\u3067\u958b\u767a\u3092\u5b9f\u73fe\u3044\u305f\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-794e3cfa wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"369\" data-attachment-id=\"18450\" data-permalink=\"https:\/\/www.ripla.co.jp\/blog\/product\/cross-platform-development-guide\/attachment\/%e3%82%b9%e3%82%af%e3%83%aa%e3%83%bc%e3%83%b3%e3%82%b7%e3%83%a7%e3%83%83%e3%83%88-2026-07-07-144340\/\" data-orig-file=\"https:\/\/www.ripla.co.jp\/blog\/wp-content\/uploads\/2025\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-07-07-144340.png\" data-orig-size=\"1325,477\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;,&quot;alt&quot;:&quot;&quot;}\" data-image-title=\"\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8 2026-07-07 144340\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/www.ripla.co.jp\/blog\/wp-content\/uploads\/2025\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-07-07-144340-1024x369.png\" src=\"https:\/\/www.ripla.co.jp\/blog\/wp-content\/uploads\/2025\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-07-07-144340-1024x369.png\" alt=\"\" class=\"wp-image-18450\" srcset=\"https:\/\/www.ripla.co.jp\/blog\/wp-content\/uploads\/2025\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-07-07-144340-1024x369.png 1024w, https:\/\/www.ripla.co.jp\/blog\/wp-content\/uploads\/2025\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-07-07-144340-300x108.png 300w, https:\/\/www.ripla.co.jp\/blog\/wp-content\/uploads\/2025\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-07-07-144340-768x276.png 768w, https:\/\/www.ripla.co.jp\/blog\/wp-content\/uploads\/2025\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-07-07-144340.png 1325w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div>\n<\/div>\n\n\n\n<p class=\"has-text-align-left 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title=\"\">\u30fb\u30b5\u30fc\u30d3\u30b9\u6982\u8981\u8cc7\u6599\u306eURL\u306f\u3053\u3061\u3089 &gt;&gt;&gt;<\/a><br><a href=\"https:\/\/www.ripla.co.jp\/inquiries\" title=\"\">\u30fb\u304a\u554f\u5408\u305b\u30da\u30fc\u30b8\u306eURL\u306f\u3053\u3061\u3089 &gt;&gt;&gt;<\/a><br><a href=\"https:\/\/www.ripla.co.jp\/whitepaper\" title=\"\">\u30fb\u304a\u5f79\u7acb\u3061\u8cc7\u6599\u306eURL\u306f\u3053\u3061\u3089 &gt;&gt;&gt;<\/a><\/p>\n<\/div>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><a href=\"https:\/\/www.ripla.co.jp\/whitepaper\"><img loading=\"lazy\" decoding=\"async\" width=\"967\" height=\"573\" data-attachment-id=\"4184\" data-permalink=\"https:\/\/www.ripla.co.jp\/blog\/?attachment_id=4184\" data-orig-file=\"https:\/\/www.ripla.co.jp\/blog\/wp-content\/uploads\/2025\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-02-27-145451.png\" data-orig-size=\"967,573\" data-comments-opened=\"1\" 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