{"id":9190,"date":"2026-02-20T11:30:29","date_gmt":"2026-02-20T02:30:29","guid":{"rendered":"https:\/\/www.wetch.co.jp\/note\/?p=9190"},"modified":"2026-02-20T11:30:31","modified_gmt":"2026-02-20T02:30:31","slug":"%e3%80%90%e3%83%af%e3%82%a4%e3%83%b3%e7%94%bb%e5%83%8f%e8%ad%98%e5%88%a52026%e3%80%91lora-arcface","status":"publish","type":"post","link":"https:\/\/www.wetch.co.jp\/note\/%e3%80%90%e3%83%af%e3%82%a4%e3%83%b3%e7%94%bb%e5%83%8f%e8%ad%98%e5%88%a52026%e3%80%91lora-arcface\/","title":{"rendered":"\u3010\u30ef\u30a4\u30f3\u753b\u50cf\u8b58\u52252026\u3011LoRA + ArcFace"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">\u524d\u56de\u306e\u6295\u7a3f\uff08<a href=\"https:\/\/www.wetch.co.jp\/note\/%e3%80%90%e3%83%af%e3%82%a4%e3%83%b3%e7%94%bb%e5%83%8f%e8%ad%98%e5%88%a52026%e3%80%91%e4%bb%8a%e6%9b%b4%e3%81%aa%e3%81%8c%e3%82%89pytorch\/\" target=\"_blank\" rel=\"noreferrer noopener\">\u3010\u30ef\u30a4\u30f3\u753b\u50cf\u8b58\u52252026\u3011\u4eca\u66f4\u306a\u304c\u3089PyTorch<\/a>\uff09\u3067\u306f\u3001TensorFlow\/Keras\u304b\u3089PyTorch\u306b\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u3092\u5909\u66f4\u3057\u305f\u4ef6\u306b\u95a2\u3057\u3066\u66f8\u304d\u307e\u3057\u305f\u304c\u3001\u305d\u306e\u3088\u3046\u306a\u4f5c\u696d\u304c\u5fc5\u8981\u306b\u306a\u3063\u305f\u6839\u672c\u7684\u306a\u7406\u7531\u306f\u3001\u30d9\u30fc\u30b9\u30e2\u30c7\u30eb\u306e\u5909\u66f4\u304c\u5fc5\u8981\u306b\u306a\u3063\u305f\u3053\u3068\u306b\u3042\u308a\u307e\u3059\u3002<br>\u305d\u308c\u307e\u3067\u4f7f\u7528\u3057\u3066\u304d\u305f\u30d9\u30fc\u30b9\u30e2\u30c7\u30eb\uff08EfficientNetV2L\uff09\u306e\u80fd\u529b\u3067\u306f\u76ee\u7684\uff08\u30e9\u30d9\u30eb\u753b\u50cf\u306b\u3088\u308b\u30ef\u30a4\u30f3\u8b58\u5225\uff09\u3092\u9054\u6210\u3059\u308b\u3053\u3068\u306f\u96e3\u3057\u305d\u3046\u306a\u6c17\u914d\u304c\u51fa\u3066\u304d\u305f\u305f\u3081\u30e2\u30c7\u30eb\u306e\u5909\u66f4\u3092\u8003\u3048\u305f\u306e\u3067\u3059\u304c\u3001\u671f\u5f85\u3057\u305f\u30e2\u30c7\u30eb\u304cMac\uff08Apple Silicon\uff09\u4e0a\u306eTensorFlow\u3067\u306f\u52d5\u4f5c\u3057\u306a\u304b\u3063\u305f\u3053\u3068\u306b\u7aef\u3092\u767a\u3057\u3001\u7d06\u4f59\u66f2\u6298\u3092\u7d4c\u3066PyTorch\u3078\u306e\u5168\u9762\u66f8\u304d\u63db\u3048\u306b\u81f3\u3063\u305f\u8a33\u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u3068\u8a00\u3046\u3053\u3068\u3067\u3001\u6539\u3081\u3066\u65b0\u30e2\u30c7\u30eb\uff08DINOv2\uff09\u3067\u306e\u5b66\u7fd2\u3092\u958b\u59cb\u3057\u305f\u306e\u3067\u3059\u304c\u2026\u7cbe\u5ea6\u304c\u5168\u7136\u4e0a\u304c\u308a\u307e\u305b\u3093\u3067\u3057\u305f\u3002orz<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u307e\u305a\u3001\u6839\u672c\u7684\u306a\u554f\u984c\u3068\u3057\u3066\u3001DINOv2\u306fEfficientNetV2L\u3068\u6bd4\u8f03\u3057\u3066\u3001\u30e1\u30e2\u30ea\u6d88\u8cbb\u91cf\u304c\u5927\u304d\u3044\u3067\u3059\u3002<br>\u3053\u308c\u306f\u3001\u5165\u529b\u89e3\u50cf\u5ea6\u304c384&#215;384\uff08EfficientNetV2L\uff09\u304b\u3089518&#215;518\uff08DINOv2\uff09\u306b\u62e1\u5f35\u3055\u308c\u305f\u3053\u3068\u3068\u3001\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\u3068\u3057\u3066CNN\uff08EfficientNetV2L\uff09\u3088\u308a\u3082ViT\uff08DINOv2\uff09\u306e\u65b9\u304c\u591a\u304f\u306e\u30e1\u30e2\u30ea\u3092\u5fc5\u8981\u3068\u3059\u308b\u3053\u3068\u306b\u8d77\u56e0\u3059\u308b\u3088\u3046\u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e0a\u8a18\u3078\u306e\u5bfe\u51e6\u3068\u3057\u3066\u3001\u30d0\u30c3\u30c1\u30b5\u30a4\u30ba\u3092\u5c0f\u3055\u304f\u3057\u305f\u308a\u3001\u8a13\u7df4\u53ef\u80fd\u306a\uff08\u30d1\u30e9\u30e1\u30fc\u30bf\u5909\u66f4\u53ef\u80fd\u306a\uff09\u5c64\u3092\u6e1b\u3089\u3059\u306a\u3069\u306e\u8abf\u6574\u3092\u884c\u3046\u3057\u304b\u306a\u304b\u3063\u305f\u306e\u3067\u3059\u304c\u3001\u3053\u308c\u3089\u306e\u5f71\u97ff\u3082\u3042\u3063\u3066\u304b\u3001F1\/F\u03b2\u30b9\u30b3\u30a2\u7b49\u306e\u6570\u5024\u304cEfficientNetV2L\u3068\u6bd4\u8f03\u3057\u3066\u3001\u5168\u304f\u53ca\u3070\u306a\u3044\u72b6\u6cc1\u304c\u7d9a\u304d\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u306e\u8fba\u306e\u3053\u3068\u3092AI\u5148\u751f\u306b\u76f8\u8ac7\u3055\u305b\u3066\u3082\u3089\u3063\u305f\u3068\u3053\u308d\u3001\u4ee5\u4e0b\u306e2\u70b9\u3067\u6539\u5584\u306e\u4f59\u5730\u304c\u3042\u308b\u306e\u3067\u306f\u306a\u3044\u304b\u3068\u306e\u8a71\u306b\u306a\u308a\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>DINOv2\u306f\u5b8c\u6210\u5ea6\u306e\u9ad8\u3044\u30e2\u30c7\u30eb\u3067\u3042\u308a\u3001\u3053\u306e\u30e2\u30c7\u30eb\u3092\u5c11\u306a\u3044\u8a13\u7df4\u30c7\u30fc\u30bf\u3068\u8ca7\u7d20\u306a\u958b\u767a\u74b0\u5883\u3067\u66f8\u304d\u63db\u3048\u3088\u3046\u3068\u3059\u308b\u3053\u3068\u304c\u3001\u305d\u3082\u305d\u3082\u306e\u9593\u9055\u3044\u3002<br>\u3088\u3063\u3066\u3001DINOv2\u81ea\u4f53\u306b\u306f\u5909\u66f4\u3092\u52a0\u3048\u305a\u3001\u4e00\u90e8\u306e\u5c64\u306b\u65b0\u898f\u306b\u8ffd\u52a0\u3057\u305f\u5c11\u91cf\u306e\u30d1\u30e9\u30e1\u30fc\u30bf\u306b\u5bfe\u3057\u3066\u5909\u66f4\u3092\u884c\u3046\u65b9\u5f0f\uff08\u69cb\u9020\uff09\u3092\u63a1\u7528\u3059\u3079\u3057\u3002<\/li>\n\n\n\n<li>\u30c8\u30ea\u30d7\u30ec\u30c3\u30c8\u5b66\u7fd2\u306f\u30cf\u30fc\u30c9\u30b5\u30f3\u30d7\u30eb\u3092\u9069\u5207\u304b\u3064\u5341\u5206\u306b\u7528\u610f\u3059\u308b\u3053\u3068\u304c\u5fc5\u8981\u3067\u3001\u52a0\u3048\u3066\u30d0\u30c3\u30c1\u5185\u306e\u30c8\u30ea\u30d7\u30ec\u30c3\u30c8\u306e\u7d44\u307f\u5408\u308f\u305b\u304c\u6210\u679c\u306b\u5927\u304d\u304f\u95a2\u4fc2\u3059\u308b\u3002<br>\u30d0\u30c3\u30c1\u30b5\u30a4\u30ba\u304c\u5c0f\u3055\u304f\u306a\u308c\u3070\u3001\u5f53\u7136\u306a\u304c\u3089\u5b66\u7fd2\u306e\u7cbe\u5ea6\u304c\u843d\u3061\u308b\u3002<br>\u307e\u305f\u3001\u5b66\u7fd2\u306b\u969b\u3057\u30663\u3064\u306e\u30c7\u30fc\u30bf\uff08\u30a2\u30f3\u30ab\u30fc\u30fb\u30dd\u30b8\u30c6\u30a3\u30d6\u30fb\u30cd\u30ac\u30c6\u30a3\u30d6\uff09\u3092\u6271\u3046\u305f\u3081\u3001\u305d\u306e\u5206\u591a\u304f\u306e\u30e1\u30e2\u30ea\u3092\u5fc5\u8981\u3068\u3059\u308b\u3002<br>\u3053\u308c\u3092\u5c11\u306a\u3044\u8a13\u7df4\u30c7\u30fc\u30bf\u3068\u8ca7\u7d20\u306a\u958b\u767a\u74b0\u5883\u3067\u5b9f\u65bd\u3057\u3088\u3046\u3068\u3059\u308b\u3053\u3068\u304c\u3001\u305d\u3082\u305d\u3082\u306e\u9593\u9055\u3044\u3002<br>\u3088\u3063\u3066\u3001\u5b66\u7fd2\u6642\u306e\u30c7\u30fc\u30bf\u9078\u629e\u306b\u5236\u7d04\u304c\u5c11\u306a\u304f\u3001\u30e1\u30e2\u30ea\u52b9\u7387\u306e\u826f\u3044\u5b66\u7fd2\u65b9\u6cd5\u3092\u63a1\u7528\u3059\u3079\u3057\u3002<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u3068\u8a00\u3046\u3053\u3068\u3067\u3001\u63a1\u7528\u3055\u308c\u305f\u306e\u304c <strong>LoRA<\/strong> \u3068 <strong>ArcFace<\/strong> \u3067\u3057\u305f\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">LoRA\uff08Low-Rank Adaptation\uff09<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">LoRA\u304c\u4f55\u8005\u3067\u3042\u308b\u304b\u3092\u7406\u89e3\u3059\u308b\u524d\u306b\u3001\u300cPEFT\u300d\u3068\u3044\u3046\u6982\u5ff5\u3092\u7406\u89e3\u3057\u3066\u304a\u304f\u3079\u304d\u304b\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>PEFT\uff08Parameter-Efficient Fine-Tuning\uff09\n\u300c\u5de8\u5927\u306a\u30e2\u30c7\u30eb\u306e\u5927\u90e8\u5206\u3092\u51cd\u7d50\uff08Freeze\uff09\u3057\u3001\u3054\u304f\u4e00\u90e8\u306e\u30d1\u30e9\u30e1\u30fc\u30bf\u3060\u3051\u3092\u5b66\u7fd2\u3055\u305b\u308b\u3053\u3068\u3067\u3001\u52b9\u7387\u7684\u306b\u7279\u5b9a\u306e\u30bf\u30b9\u30af\u3078\u9069\u5fdc\u3055\u305b\u308b\u6280\u8853\u300d\u306e\u7dcf\u79f0<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u3064\u307e\u308a\u3001\u4eca\u307e\u3067\u5b9f\u65bd\u3057\u3066\u304d\u305f\u624b\u6cd5\u3082\u4e00\u90e8\u306e\u5c64\u306e\u30d1\u30e9\u30e1\u30fc\u30bf\u3092\u66f4\u65b0\u3059\u308b\u65b9\u6cd5\u3067\u3042\u3063\u305f\u305f\u3081\u3001\u300cPEFT\u300d\u3067\u3042\u3063\u305f\u3068\u8a00\u3048\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u305f\u3060\u3001\u4eca\u307e\u3067\u306e\u624b\u6cd5\u304c\u30d9\u30fc\u30b9\u30e2\u30c7\u30eb\u81ea\u8eab\u306e\u30d1\u30e9\u30e1\u30fc\u30bf\u3092\u66f4\u65b0\u3057\u3066\u3044\u305f\u306e\u306b\u5bfe\u3057\u3001LoRA\u3067\u306f\u30d9\u30fc\u30b9\u30e2\u30c7\u30eb\u306e\u30d1\u30e9\u30e1\u30fc\u30bf\u306f\u5909\u66f4\u305b\u305a\u3001\u5b66\u7fd2\u7d50\u679c\u3092\u53cd\u6620\u3059\u308b\u305f\u3081\u306e\uff08\u3042\u304f\u307e\u3067\u30d9\u30fc\u30b9\u30e2\u30c7\u30eb\u306e\u30d1\u30e9\u30e1\u30fc\u30bf\u91cf\u3068\u6bd4\u8f03\u3057\u3066\uff09\u5c11\u91cf\u306e\u30d1\u30e9\u30e1\u30fc\u30bf\u3092\u8ffd\u52a0\uff06\u66f4\u65b0\u3059\u308b\u3053\u3068\u3067\u3001\u52b9\u7387\u7684\u306b\u5b66\u7fd2\u3092\u884c\u304a\u3046\u3068\u3059\u308b\u3082\u306e\u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u306e\u8fba\u306e\u89e3\u8aac\u306f\u3001\u4f8b\u306b\u3088\u3063\u3066AI\u5148\u751f\u306b\u304a\u9858\u3044\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>LoRA\u306f\u3001\u5b66\u7fd2\u6e08\u307f\u306e\u5de8\u5927\u306a\u30e2\u30c7\u30eb\uff08\u30d9\u30fc\u30b9\u30e2\u30c7\u30eb\uff09\u306b\u5bfe\u3057\u3066\u3001\u4ee5\u4e0b\u306e\u30d7\u30ed\u30bb\u30b9\u3067\u52b9\u7387\u7684\u306a\u5fae\u8abf\u6574\u3092\u884c\u3044\u307e\u3059\u3002\n\n1. \u91cd\u307f\u306e\u51cd\u7d50\u3068\u8ffd\u52a0\n\u30d9\u30fc\u30b9\u30e2\u30c7\u30eb\u304c\u6301\u3064\u5143\u306e\u91cd\u307f\uff08\u884c\u5217W\uff09\u306f\u3059\u3079\u3066\u51cd\u7d50\u3057\u3001\u5b66\u7fd2\u4e2d\u3082\u4e00\u5207\u5909\u66f4\u3057\u307e\u305b\u3093\u3002\n\u305d\u306e\u4ee3\u308f\u308a\u306b\u3001\u7279\u5b9a\u306e\u5c64\u306b\u5bfe\u3057\u3066\u65b0\u3057\u304f2\u3064\u306e\u4f4e\u30e9\u30f3\u30af\u884c\u5217A\u3068B\u3092\u8ffd\u52a0\u3057\u307e\u3059\u3002\n\n2. \u884c\u5217A\u3068B\u306e\u69cb\u9020\uff08\u6b21\u5143\u306e\u6574\u5408\u6027\uff09\n\u5bfe\u8c61\u3068\u306a\u308b\u5c64\u306e\u91cd\u307f\u884c\u5217W\u304cn*m\u6b21\u3067\u3042\u308b\u5834\u5408\u3001\u8ffd\u52a0\u3059\u308b\u884c\u5217\u306f\u4ee5\u4e0b\u306e\u30b5\u30a4\u30ba\u3092\u6301\u3061\u307e\u3059\u3002\n\u884c\u5217A: n*r\u6b21\n\u884c\u5217B: r*m\u6b21\n\u3053\u3053\u3067r\uff08\u30e9\u30f3\u30af\uff09\u306f\u3001\u5143\u306e\u6b21\u5143\u3088\u308a\u3082\u9065\u304b\u306b\u5c0f\u3055\u3044\u5024\uff08\u4f8b\uff1a8\u308416\uff09\u306b\u8a2d\u5b9a\u3055\u308c\u307e\u3059\u3002\n\n3. \u5b66\u7fd2\u306e\u5bfe\u8c61\n\u5b66\u7fd2\uff08\u30c1\u30e5\u30fc\u30cb\u30f3\u30b0\uff09\u306e\u5bfe\u8c61\u306f\u3001\u3053\u306e\u65b0\u3057\u304f\u8ffd\u52a0\u3055\u308c\u305f\u884c\u5217A\u3068B\u306e\u30d1\u30e9\u30e1\u30fc\u30bf\u306e\u307f\u3067\u3059\u3002\n\u305d\u306e\u7dcf\u6570\u306f (n+m)*r \u3067\u3059\u3002\n\u30d9\u30fc\u30b9\u30e2\u30c7\u30eb\u306e\u5de8\u5927\u306a\u30d1\u30e9\u30e1\u30fc\u30bf\u7fa4\u306f\u52d5\u304b\u3055\u306a\u3044\u305f\u3081\u3001\u8a08\u7b97\u30b3\u30b9\u30c8\u3068\u30e1\u30e2\u30ea\u6d88\u8cbb\u3092\u5287\u7684\u306b\u6291\u3048\u308b\u3053\u3068\u304c\u53ef\u80fd\u3067\u3059\u3002\n\n4. \u91cd\u307f\u306e\u88dc\u6b63\u30e1\u30ab\u30cb\u30ba\u30e0\n\u5b66\u7fd2\u306b\u3088\u3063\u3066\u6700\u9069\u5316\u3055\u308c\u305f\u884c\u5217A\u3068B\u306e\u7a4d\uff08A*B\uff09\u3092\u8a08\u7b97\u3059\u308b\u3068\u3001\u884c\u5217\u306e\u7a4d\u306e\u6027\u8cea\u306b\u3088\u308a\u3001\u5143\u306e\u91cd\u307f\u3068\u540c\u3058n*m\u6b21\u306e\u884c\u5217\u304c\u5f97\u3089\u308c\u307e\u3059\u3002\n\n\u8a08\u7b97\u5f0f: W_updated = W_frozen + (A*B)\n\n\u3053\u306e\u7a4d\uff08A*B\uff09\u304c\u3001\u30d9\u30fc\u30b9\u30e2\u30c7\u30eb\u306e\u91cd\u307f\u306b\u5bfe\u3059\u308b\u300c\u5dee\u5206\uff08\u88dc\u6b63\u5024\uff09\u300d\u3068\u3057\u3066\u6a5f\u80fd\u3057\u307e\u3059\u3002\n\u5143\u306e\u77e5\u8b58\u3092\u4fdd\u6301\u3057\u305f\u307e\u307e\u3001\u7279\u5b9a\u306e\u30bf\u30b9\u30af\uff08\u30ef\u30a4\u30f3\u30e9\u30d9\u30eb\u8b58\u5225\u306a\u3069\uff09\u306b\u5fc5\u8981\u306a\u88dc\u6b63\u3092\u30d4\u30f3\u30dd\u30a4\u30f3\u30c8\u3067\u52a0\u3048\u308b\u3053\u3068\u3067\u3001\u30e2\u30c7\u30eb\u306e\u6319\u52d5\u3092\u7cbe\u5bc6\u306b\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\u3057\u307e\u3059\u3002<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u30dd\u30a4\u30f3\u30c8\u3067\u3042\u308b\u30d1\u30e9\u30e1\u30fc\u30bf\u6570\u3067\u3059\u304c\u3001\u5bfe\u8c61\u3068\u306a\u308b\u5c64\u306e\u30d1\u30e9\u30e1\u30fc\u30bf\u306e\u69cb\u9020\u304c1,000*1,000\u3067\u3042\u3063\u305f\u5834\u5408\u3001\u30d1\u30e9\u30e1\u30fc\u30bf\u7dcf\u6570\u306f1,000,000\u3068\u3044\u3046\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u304c\u3001LoRA\u3067\u306f\uff081,000+1,000\uff09*r \u3068\u306a\u308b\u305f\u3081\u3001\u4f8b\u3048\u3070 r=8 \u3067\u308216,000\u3067\u3042\u308a\u3001\u975e\u5e38\u306b\u5c11\u91cf\u306e\u30d1\u30e9\u30e1\u30fc\u30bf\u3067\u5b66\u7fd2\u304c\u5b9f\u73fe\u3067\u304d\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\uff08\u305f\u3060\u3057\u3001\u30d1\u30e9\u30e1\u30fc\u30bf\u6570\u306e\u6bd4\u304c\u3001\u305d\u306e\u307e\u307e\u8a08\u7b97\u30b3\u30b9\u30c8\u3084\u30e1\u30e2\u30ea\u6d88\u8cbb\u91cf\u306e\u524a\u6e1b\u7387\u306b\u306a\u308b\u8a33\u3067\u306f\u306a\u3044\u3088\u3046\u3067\u3059\u304c\uff09\u3002<br>A,B\u884c\u5217\u306e\u9650\u3089\u308c\u305f\u30d1\u30e9\u30e1\u30fc\u30bf\u3092\u66f4\u65b0\u3057\u3001\u305d\u306e\u6f14\u7b97\u7d50\u679c\u3067\u30d9\u30fc\u30b9\u30e2\u30c7\u30eb\u306e\u91cd\u307f\u3092\u88dc\u6b63\u3059\u308b\u3060\u3051\u3067\u3001\u4f55\u6545\u30e2\u30c7\u30eb\u306e\u6319\u52d5\u304c\u300c\u7cbe\u5bc6\u306b\u300d\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\u3067\u304d\u308b\u306e\u304b\u306f\u8b0e\u3067\u3059\u304c\u3001\u3053\u306e\u8fba\u306f\u6df1\u307f\u306b\u30cf\u30de\u308a\u305d\u3046\u306a\u306e\u3067\u8ffd\u6c42\u306f\u3057\u306a\u3044\u3067\u304a\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u306a\u304a\u3001\u5b9f\u969b\u306e\u5b9f\u88c5\u306b\u304a\u3044\u3066\u306f\u3001LoRA\u306e\u6d3e\u751f\u7cfb\u3067\u3042\u308b\u300cDoRA (Weight-Decomposed Low-Rank Adaptation)\u300d\u3092\u4f7f\u7528\u3057\u3066\u3044\u307e\u3059\u3002<br>DoRA\u306b\u95a2\u3059\u308b\u89e3\u8aac\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>DoRA\u306f\u3001\u91cd\u307f\u3092\u300c\u5411\u304d\uff08Magnitude\uff09\u300d\u3068\u300c\u5927\u304d\u3055\uff08Direction\uff09\u300d\u306b\u5206\u89e3\u3057\u3066\u5b66\u7fd2\u3057\u307e\u3059\u3002\nLoRA\u306f\u4e3b\u306b\u300c\u5411\u304d\u300d\u306e\u5909\u5316\u3092\u6349\u3048\u307e\u3059\u304c\u3001DoRA\u306f\u3053\u308c\u3089\u3092\u500b\u5225\u306b\u6700\u9069\u5316\u3059\u308b\u3053\u3068\u3067\u3001\u30d5\u30eb\u30d5\u30a1\u30a4\u30f3\u30c1\u30e5\u30fc\u30cb\u30f3\u30b0\u306e\u6319\u52d5\u306b\u6975\u3081\u3066\u8fd1\u3044\u5b66\u7fd2\u80fd\u529b\u3092\u767a\u63ee\u3057\u307e\u3059\u3002\n\u30aa\u30ea\u30b8\u30ca\u30ebLoRA\u3088\u308a\u3082\u5c11\u306a\u3044r\u3067\u9ad8\u3044\u7cbe\u5ea6\u304c\u51fa\u305b\u308b\u3053\u3068\u304c\u591a\u304f\u3001\u300c\u5fae\u7d30\u306a\u6a21\u69d8\u306e\u5dee\u300d\u3092\u5b66\u7fd2\u3059\u308b\u969b\u306b\u975e\u5e38\u306b\u5f37\u529b\u3067\u3059\u3002<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u539f\u7406\u306f\u826f\u304f\u308f\u304b\u308a\u307e\u305b\u3093\u304c\u3001LoRA\u30aa\u30ea\u30b8\u30ca\u30eb\u3088\u308a\u3082\u9ad8\u3044\u7cbe\u5ea6\u304c\u51fa\u305b\u305d\u3046\u3060\u3068\u8a00\u3046\u3053\u3068\u306f\u3001\u4f55\u3068\u306a\u304f\u4f1d\u308f\u3063\u3066\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">ArcFace<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u30c8\u30ea\u30d7\u30ec\u30c3\u30c8\u5b66\u7fd2\u304c\u300c\u30a2\u30f3\u30ab\u30fc\u30fb\u30cd\u30ac\u30c6\u30a3\u30d6\u9593\u306e\u8ddd\u96e2\u3092\u3001\u30a2\u30f3\u30ab\u30fc\u30fb\u30dd\u30b8\u30c6\u30a3\u30d6\u9593\u306e\u8ddd\u96e2\u3088\u308a\u3082\u4e00\u5b9a\u91cf\uff08\u30de\u30fc\u30b8\u30f3\uff09\u4ee5\u4e0a\u9060\u3056\u3051\u308b\u300d\u3068\u3044\u3046\u300c\u30b5\u30f3\u30d7\u30eb\u9593\u306e\u76f8\u5bfe\u8ddd\u96e2\u300d\u306e\u6700\u9069\u5316\u3092\u76ee\u7684\u3068\u3057\u305f\u5b66\u7fd2\u3067\u3042\u3063\u305f\u306e\u306b\u5bfe\u3057\u3001ArcFace\u306f\u30af\u30e9\u30b9\uff08\u540c\u3058\u30e9\u30d9\u30eb\u306e\u753b\u50cf\u306e\u96c6\u307e\u308a\uff09\u306b\u5bfe\u3057\u3066\u300c\u4ee3\u8868\u30d9\u30af\u30c8\u30eb\u300d\u3068\u3044\u3046\u76ee\u6a19\u3092\u8a2d\u3051\u3001\u540c\u30af\u30e9\u30b9\u306e\u30d9\u30af\u30c8\u30eb\uff08\u30a8\u30f3\u30d9\u30c7\u30a3\u30f3\u30b0\u7d50\u679c\uff09\u304c\u4ee3\u8868\u30d9\u30af\u30c8\u30eb\u306b\u8fd1\u3065\u304f\u3088\u3046\u306b\u3057\u3064\u3064\u3001\u7570\u306a\u308b\u30af\u30e9\u30b9\u306e\u4ee3\u8868\u30d9\u30af\u30c8\u30eb\u306f\u76f8\u4e92\u306b\u9060\u3056\u3051\u308b\u3088\u3046\u306b\u5b66\u7fd2\u3092\u884c\u3046\u65b9\u5f0f\u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u672c\u6765\u306e\u5b66\u7fd2\u5bfe\u8c61\u306f\u3042\u304f\u307e\u3067\u300c\u7279\u5fb4\u62bd\u51fa\u5668\u300d\uff08DINOv2 + DoRA + Projection Head\uff09\u3067\u3059\u304c\u3001\u5b66\u7fd2\u306e\u624b\u6bb5\u3068\u3057\u3066\u300c\u5206\u985e\u5668\u300d\uff08ArcFace\uff09\u3092\u8ffd\u52a0\u3057\u3001\u6700\u7d42\u7684\u306a\u30af\u30e9\u30b9\u5206\u985e\u306e\u7cbe\u5ea6\uff08\u3064\u307e\u308a\u5165\u529b\u3055\u308c\u305f\u30c7\u30fc\u30bf\u3092\u6b63\u3057\u3044\u30af\u30e9\u30b9\u306b\u5206\u985e\u3059\u308b\u969b\u306e\u78ba\u5ea6\uff09\u3092\u5411\u4e0a\u3055\u305b\u308b\u3088\u3046\u306b\u5b66\u7fd2\u3092\u9032\u3081\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">ArcFace\u306e\u30d1\u30e9\u30e1\u30fc\u30bf\u306f\u3001\u5f53\u8a72\u5b66\u7fd2\u3067\u6271\u3046\u30af\u30e9\u30b9\u6570\u3092m\u3001\u7279\u5fb4\u62bd\u51fa\u5668\u304c\u51fa\u529b\u3059\u308b\u30d9\u30af\u30c8\u30eb\u306e\u6b21\u5143\u6570\u3092n\u3068\u3059\u308b\u3068\u3001m * n \u306e\u884c\u5217\u3067\u3059\uff08\u3053\u308c\u3092\u300c\u91cd\u307f\u884c\u5217W\u300d\u3068\u547c\u79f0\u3057\u307e\u3059\uff09\u3002<br>\u5b9f\u306f\u3001\u91cd\u307f\u884c\u5217W\u306e\u5404\u884c\u306f\u7279\u5b9a\u306e\u30af\u30e9\u30b9\u306e\u300c\u4ee3\u8868\u30d9\u30af\u30c8\u30eb\u300d\uff08\u3064\u307e\u308a\u76ee\u6307\u3059\u3079\u304d\u53ce\u675f\u5148\uff09\u3068\u306a\u3063\u3066\u3044\u3066\u3001\u305d\u308c\u6545\u306b\u91cd\u307f\u884c\u5217W\u306e\u5217\u6570\u306f\u7279\u5fb4\u62bd\u51fa\u5668\u304c\u51fa\u529b\u3059\u308b\u30d9\u30af\u30c8\u30eb\u306e\u6b21\u5143\u6570\u3068\u540c\u3058\uff08n\uff09\u3067\u3001\u305d\u308c\u304c\u30af\u30e9\u30b9\u6570\uff08m\uff09\u884c\u4e26\u3093\u3067\u3044\u308b\u69cb\u9020\u3092\u6301\u3064\u8a33\u3067\u3059\u3002<br>\u306a\u304a\u3001ArcFace\u306b\u304a\u3044\u3066\u306f\u3001\u4ee3\u8868\u30d9\u30af\u30c8\u30eb\u3092\u542b\u3080\u5404\u30d9\u30af\u30c8\u30eb\u306f\u6b63\u898f\u5316\u3055\u308c\u3066\u304a\u308a\u3001\u3064\u307e\u308a\u306fn\u6b21\u5143\u306b\u304a\u3051\u308b\u534a\u5f841\u306e\u8d85\u7403\u9762\u4e0a\u306e\u3069\u3053\u304b\u3092\u6307\u3059\u3088\u3046\u306a\u30d9\u30af\u30c8\u30eb\u306b\u306a\u3063\u3066\u3044\u308b\u30a4\u30e1\u30fc\u30b8\u3067\u3059\u3002<br>\u3053\u306e\u72b6\u6cc1\u3067\u306f\u30012\u3064\u306e\u30d9\u30af\u30c8\u30eb\u306e\u9060\u8fd1\u306f\u3001\u4e21\u8005\u306e\u306a\u3059\u89d2\u306e\u5927\u5c0f\u3068\u7b49\u4fa1\u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5b66\u7fd2\u306e\u521d\u671f\u6bb5\u968e\u3067\u306f\u3001\u91cd\u307f\u884c\u5217W\u306e\u5185\u5bb9\u3001\u3064\u307e\u308a\u306f\u5404\u30af\u30e9\u30b9\u306e\u4ee3\u8868\u30d9\u30af\u30c8\u30eb\u306f\u30e9\u30f3\u30c0\u30e0\u306a\u5024\u3067\u69cb\u6210\u3055\u308c\u3066\u3044\u308b\u3088\u3046\u3067\u3059\u304c\u3001\u5b66\u7fd2\u304c\u9032\u3080\u306b\u3064\u308c\u3066\u9069\u6b63\u306a\u65b9\u5411\uff08\u540c\u30af\u30e9\u30b9\u306b\u5c5e\u3059\u308b\u5404\u30d9\u30af\u30c8\u30eb\u306e\u4e2d\u5fc3\u3068\u3057\u3066\u9069\u5f53\u3067\u3001\u304b\u3064\u7570\u306a\u308b\u30af\u30e9\u30b9\u306e\u4ee3\u8868\u30d9\u30af\u30c8\u30eb\u3068\u306f\u5341\u5206\u96e2\u308c\u305f\u65b9\u5411\uff09\u3092\u5411\u304f\u3088\u3046\u306b\u8abf\u6574\u3055\u308c\u307e\u3059\u3002<br>\u305d\u306e\u4ee3\u8868\u30d9\u30af\u30c8\u30eb\u306b\u5bfe\u3057\u3066\u5404\u30af\u30e9\u30b9\u306e\u30d9\u30af\u30c8\u30eb\u304c\u8fd1\u3065\u304f\u3088\u3046\u306b\u7279\u5fb4\u62bd\u51fa\u5668\u306b\u5b66\u7fd2\u3055\u305b\u308b\u3053\u3068\u304c\u3001ArcFace\u5b66\u7fd2\u306e\u672c\u8cea\u3068\u8a00\u3048\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u306a\u304a\u3001\u524d\u8ff0\u3057\u305f\u3088\u3046\u306a\u5b66\u7fd2\u304c\u3069\u306e\u3088\u3046\u306b\u884c\u308f\u308c\u308b\u304b\u3092\u7406\u89e3\u3059\u308b\u305f\u3081\u306b\u306f\u3001\u3084\u306f\u308a\u640d\u5931\u95a2\u6570\u3092\u7406\u89e3\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<br>ArcFace\u306e\u640d\u5931\u95a2\u6570\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u5f0f\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-1 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"149\" data-id=\"9193\" src=\"https:\/\/www.wetch.co.jp\/note\/wp-content\/uploads\/2026\/02\/arcface_formula_only-1-1024x149.png\" alt=\"\" class=\"wp-image-9193\" srcset=\"https:\/\/www.wetch.co.jp\/note\/wp-content\/uploads\/2026\/02\/arcface_formula_only-1-1024x149.png 1024w, https:\/\/www.wetch.co.jp\/note\/wp-content\/uploads\/2026\/02\/arcface_formula_only-1-300x44.png 300w, https:\/\/www.wetch.co.jp\/note\/wp-content\/uploads\/2026\/02\/arcface_formula_only-1-768x112.png 768w, https:\/\/www.wetch.co.jp\/note\/wp-content\/uploads\/2026\/02\/arcface_formula_only-1-150x22.png 150w, https:\/\/www.wetch.co.jp\/note\/wp-content\/uploads\/2026\/02\/arcface_formula_only-1-696x101.png 696w, https:\/\/www.wetch.co.jp\/note\/wp-content\/uploads\/2026\/02\/arcface_formula_only-1-1068x155.png 1068w, https:\/\/www.wetch.co.jp\/note\/wp-content\/uploads\/2026\/02\/arcface_formula_only-1.png 1177w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u8907\u96d1\u306a\u306e\u3067\u3001\u307e\u305a\u306f\u5168\u4f53\u50cf\u3092\u6574\u7406\u3057\u305f\u3044\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">N\u306f\u640d\u5931\u8a08\u7b97\u3092\u884c\u3046\u969b\u306e\u5bfe\u8c61\u30c7\u30fc\u30bf\u306e\u6570\u3067\u3042\u308a\u3001\u3064\u307e\u308a\u306f\u30d0\u30c3\u30c1\u30b5\u30a4\u30ba\u3067\u3059\u3002<br>\u3088\u3063\u3066\u3001\u6700\u521d\u306e (1\/N)\u03a3 \u306e\u90e8\u5206\u306f\u30d0\u30c3\u30c1\u5185\u306e\u5404\u30c7\u30fc\u30bf\u306b\u95a2\u3059\u308b\u300c\u640d\u5931\u300d\u306e\u7b97\u8853\u5e73\u5747\u3092\u8a08\u7b97\u3057\u3066\u3044\u308b\u3060\u3051\u3067\u3059\u3002<br>\u7b26\u53f7\uff08\u30de\u30a4\u30ca\u30b9\uff09\u306e\u4f4d\u7f6e\u304c\u3084\u3084\u3053\u3057\u3044\u3067\u3059\u304c\u3001\u7b97\u8853\u5e73\u5747\u306e\u8981\u7d20\u3068\u306a\u308b\u5404\u30c7\u30fc\u30bf\u306e\u300c\u640d\u5931\u300d\u304c -log(&#8230;) \u306a\u308b\u5f0f\u3067\u8868\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">log\u306e\u4e2d\u8eab\uff08\u771f\u6570\uff09\u306b\u95a2\u3057\u3066\u3082\u3001\u7d30\u304b\u304f\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e00\u65e6 m \u3092\u7121\u8996\u3059\u308b\u3068\u3001\u5206\u5b50\u30fb\u5206\u6bcd\u3092\u69cb\u6210\u3059\u308b\u5404\u9805\u306f exp(s*cos(\u03b8)) \u3068\u3044\u3046\u5f0f\u3067\u8868\u3055\u308c\u3066\u3044\u307e\u3059\u3002<br>\u03b8\u306f\u30c7\u30fc\u30bf\uff08i\uff09\u306e\u30d9\u30af\u30c8\u30eb\u3068\u5404\u30af\u30e9\u30b9\u306e\u4ee3\u8868\u30d9\u30af\u30c8\u30eb\uff08j\uff09\u304c\u306a\u3059\u89d2\u3067\u3042\u308a\u3001\u5f53\u8a72\u30c7\u30fc\u30bf\u304c\u5c5e\u3059\u308b\u30af\u30e9\u30b9\u306e\u4ee3\u8868\u30d9\u30af\u30c8\u30eb\uff08\u6b63\u89e3\u30d9\u30af\u30c8\u30eb\uff09\u306b\u95a2\u3057\u3066\u306fj=yi\u3067\u793a\u3057\u3066\u3044\u307e\u3059\u3002<br>\u5206\u6bcd\u306b\u95a2\u3057\u3066\u306f\u3001\u6b63\u89e3\u30d9\u30af\u30c8\u30eb\u306b\u95a2\u3059\u308b exp(s*cos(\u03b8)) \u306e\u5024\u3068\u3001\u305d\u308c\u4ee5\u5916\u306e\u4ee3\u8868\u30d9\u30af\u30c8\u30eb\u3068\u306e exp(s*cos(\u03b8)) \u306e\u5408\u7b97\u7d50\u679c\u3092\u8db3\u3057\u3066\u3044\u308b\u3060\u3051\u306a\u306e\u3067\u3001\u3064\u307e\u308a\u306f\u30c7\u30fc\u30bf\uff08i\uff09\u3068\u5168\u4ee3\u8868\u30d9\u30af\u30c8\u30eb\u306b\u95a2\u3059\u308b exp(s*cos(\u03b8)) \u306e\u5408\u8a08\u306b\u306a\u308a\u307e\u3059\u3002<br>\u3088\u3063\u3066\u3001s*cos(\u03b8) \u3092\u7701\u7565\u3059\u308b\u3068\u3001log\u306e\u771f\u6570\u90e8\u5206\u306f exp() \/ \u03a3exp() \u306a\u308b\u69cb\u9020\u3067\u3042\u308b\u3053\u3068\u304c\u5206\u304b\u308a\u307e\u3059\u3002<br>\u3053\u308c\u306f Softmax \u3068\u547c\u3070\u308c\u308b\u5f0f\u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Softmax\u306e\u89e3\u8aac\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\u30bd\u30d5\u30c8\u30de\u30c3\u30af\u30b9\u95a2\u6570\u3068\u306f\u3001\u8907\u6570\u306e\u6570\u5024\uff08\u30b9\u30b3\u30a2\uff09\u3092\u300c\u5408\u8a08\u304c1\uff08100%\uff09\u306b\u306a\u308b\u78ba\u7387\u300d\u3078\u3068\u5909\u63db\u3059\u308b\u4ed5\u7d44\u307f\u3067\u3059\u3002\n\n\u5927\u304d\u306a\u7279\u5fb4\u306f\u3001\u5404\u6570\u5024\u3092\u305d\u306e\u307e\u307e\u5272\u5408\u306b\u3059\u308b\u306e\u3067\u306f\u306a\u304f\u3001\u6307\u6570\u95a2\u6570\u3092\u7528\u3044\u3066\u5dee\u3092\u5f37\u8abf\u3059\u308b\u70b9\u306b\u3042\u308a\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u6700\u3082\u5927\u304d\u306a\u5024\u304c\u3088\u308a\u969b\u7acb\u3061\u3001\u30de\u30a4\u30ca\u30b9\u306e\u5024\u3082\u6b63\u306e\u78ba\u7387\u3068\u3057\u3066\u6271\u3048\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002AI\u304c\u300c\u3053\u308c\u306f\u732b\u3067\u3042\u308b\u78ba\u7387\u304c90%\u300d\u3068\u3044\u3063\u305f\u6700\u7d42\u7684\u306a\u4e88\u6e2c\u7d50\u679c\u3092\u51fa\u3059\u969b\u3084\u3001\u6ce8\u76ee\u3059\u3079\u304d\u8981\u7d20\u3092\u62bd\u51fa\u3059\u308b\u8a08\u7b97\u3067\u4e0d\u53ef\u6b20\u306a\u6280\u8853\u3067\u3059\u3002<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e0a\u8a18\u3067\u8a00\u3046\u300c\u30b9\u30b3\u30a2\u300d\u306f\u3001\u4eca\u56de\u306e\u30b1\u30fc\u30b9\u3067\u306f cos(\u03b8) \u3068\u8003\u3048\u3066\u826f\u3044\u3067\u3057\u3087\u3046\u3002<br>cos(\u03b8) \u306f\u30c7\u30fc\u30bf\uff08i\uff09\u3068\u4ee3\u8868\u30d9\u30af\u30c8\u30eb\u3068\u306e\u30b3\u30b5\u30a4\u30f3\u985e\u4f3c\u5ea6\uff081 \u301c -1\uff09\u3067\u3042\u308a\u3001\u3053\u308c\u306f\u30c7\u30fc\u30bf\uff08i\uff09\u304c\u5404\u30af\u30e9\u30b9\u306b\u5c5e\u3059\u308b\u53ef\u80fd\u6027\u3092\u300c\u8fd1\u3055\u300d\u3068\u3057\u3066\u793a\u3057\u305f\u6570\u5024\u3067\u3059\u3002<br>\u3053\u306e\u3053\u3068\u304b\u3089\u3001log\u306e\u771f\u6570\u90e8\u5206\u306f\u300c\u5165\u529b\u30c7\u30fc\u30bf\u304c\u3001\u6b63\u89e3\u30af\u30e9\u30b9\u306e\u4ee3\u8868\u30d9\u30af\u30c8\u30eb\u3068\u3069\u308c\u3060\u3051\u4f3c\u3066\u3044\u308b\u304b\uff08\u985e\u4f3c\u5ea6\uff09\u306b\u57fa\u3065\u304d\u3001Softmax\u306b\u3088\u3063\u3066\u7b97\u51fa\u3055\u308c\u305f\u300e\u6b63\u89e3\u30af\u30e9\u30b9\u3067\u3042\u308b\u78ba\u7387\uff08\u78ba\u5ea6\uff09\u300f\u300d\u3068\u8a00\u3048\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u306a\u304a\u3001cos(\u03b8) \u306e\u5024\u306e\u7bc4\u56f2\u306f 1 \u301c -1 \u3068\u975e\u5e38\u306b\u72ed\u3044\u305f\u3081\u3001\u3053\u306e\u307e\u307e\u3067\u306f cos(\u03b8) \u306e\u5909\u5316\u304c\u78ba\u7387\uff08\u78ba\u5ea6\uff09\u306b\u4e0e\u3048\u308b\u5f71\u97ff\u304c\u5c0f\u3055\u304f\u306a\u3063\u3066\u3057\u307e\u3044\u307e\u3059\u3002<br>\u3088\u3063\u3066\u3001\u4fc2\u6570 s \u3092\u639b\u3051\u308b\u3053\u3068\u306b\u3088\u3063\u3066\u5909\u5316\u3092\u5897\u5e45\u3057\u3066\u3001\u78ba\u7387\uff08\u78ba\u5ea6\uff09\u3082\u5927\u304d\u304f\u5909\u52d5\u3059\u308b\u3088\u3046\u306b\u64cd\u4f5c\u3057\u3066\u3044\u308b\u8a33\u3067\u3059\u3002<br>\u3053\u306e\u4fc2\u6570 s \u306e\u3053\u3068\u3092\u300c\u30b9\u30b1\u30fc\u30eb\u30d5\u30a1\u30af\u30bf\u300d\u3068\u547c\u3076\u3088\u3046\u3067\u3001\u901a\u5e38\u306f 30 \u301c 64 \u7a0b\u5ea6\u306e\u5024\u3068\u3059\u308b\u3088\u3046\u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e0a\u8a18\u3088\u308a\u3001Softmax\u90e8\u5206\u306f\u300e\u6b63\u89e3\u30af\u30e9\u30b9\u3067\u3042\u308b\u78ba\u7387\uff08\u78ba\u5ea6\uff09\u300f\u3067\u3042\u308b\u3053\u3068\u304c\u5206\u304b\u308a\u307e\u3057\u305f\u304c\u3001\u3053\u308c\u306f\u3042\u304f\u307e\u3067\u78ba\u7387\uff08\u78ba\u5ea6\uff09\u3067\u3042\u308a\u3001\u6b63\u89e3\uff08100%=1.0\uff09\u304b\u3089\u4e0d\u6b63\u89e3\uff08\u6975\u3081\u30660\u306b\u8fd1\u3044\u5024\uff09\u307e\u3067\u3092\u793a\u3059\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002<br>\u3057\u304b\u3057\u3001\u4eca\u56de\u5fc5\u8981\u3068\u306a\u308b\u5024\u306f\u300c\u640d\u5931\u300d\u3067\u3042\u308a\u3001\u6b63\u89e3\uff08\u78ba\u5ea6100%\uff09\u30920\u3068\u3057\u3001\u78ba\u5ea6\u304c\u4e0b\u304c\u308b\u307b\u3069\u5927\u304d\u306a\u5024\u3068\u306a\u308b\u3088\u3046\u306b\u5909\u63db\u3057\u305f\u3044\u8a33\u3067\u3059\u3002<br>\u3053\u306e\u8a08\u7b97\u304c -log \u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4ee5\u4e0a\u306e\u5185\u5bb9\u3092\u7c21\u5358\u306b\u307e\u3068\u3081\u308b\u3068\u3001ArcFace\u306b\u304a\u3051\u308b\u640d\u5931\u8a08\u7b97\u306e\u6d41\u308c\u306f\u3001\u4ee5\u4e0b\u306e\u30b9\u30c8\u30fc\u30ea\u30fc\u3067\u6210\u308a\u7acb\u3063\u3066\u3044\u308b\u3068\u8a00\u3048\u307e\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u985e\u4f3c\u5ea6\uff08Cos\uff09\u3092\u51fa\u3059\uff1a<\/strong> \u300c\u3069\u306e\u304f\u3089\u3044\u4f3c\u3066\u3044\u308b\u304b\u300d\u3092\u6e2c\u308b\u3002<\/li>\n\n\n\n<li><strong>Softmax\u3092\u901a\u3059\uff1a<\/strong> \u5168\u4f53\u306e\u4e2d\u3067\u306e\u300c\u6b63\u89e3\u30af\u30e9\u30b9\u3067\u3042\u308b\u78ba\u7387\u300d\u306b\u5909\u63db\u3059\u308b\u3002<\/li>\n\n\n\n<li><strong>-log\u3092\u3068\u308b\uff1a<\/strong> \u305d\u306e\u78ba\u7387\u304c\u4f4e\u3044\u307b\u3069\u5de8\u5927\u306a\u300c\u640d\u5931\u300d\u3068\u306a\u308b\u3088\u3046\u6570\u5024\u5316\u3059\u308b\u3002<\/li>\n\n\n\n<li><strong>\u7b97\u8853\u5e73\u5747\u3092\u3068\u308b\uff1a<\/strong>\u30d0\u30c3\u30c1\u3068\u3057\u3066\u306e\u300c\u640d\u5931\u300d\u3092\u6570\u5024\u5316\u3059\u308b\u3002<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">\u6700\u5f8c\u306b\u3001\u4eca\u307e\u3067\u7121\u8996\u3057\u3066\u304d\u305f m \u306e\u5b58\u5728\u306b\u89e6\u308c\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5b9f\u306f\u3001\u3053\u306e m\uff08\u30de\u30fc\u30b8\u30f3\uff09\u3053\u305d\u304cArcFace\u306e\u7279\u5fb4\u3067\u300c\u6b63\u89e3\u30af\u30e9\u30b9\u3068\u5224\u5b9a\u3055\u308c\u308b\u305f\u3081\u306e\u5408\u683c\u57fa\u6e96\u3092\u3001\u89d2\u5ea6\uff08\u65b9\u5411\uff09\u306e\u9762\u3067\u610f\u56f3\u7684\u306b\u53b3\u3057\u304f\u3059\u308b\u30da\u30ca\u30eb\u30c6\u30a3\u300d\u3067\u3059\u3002<br>\u5148\u306b\u793a\u3057\u305f\u5f0f\u306b\u3042\u308b\u3088\u3046\u306b\u3001\u30de\u30fc\u30b8\u30f3\u306f\u6b63\u89e3\u30af\u30e9\u30b9\u3068\u306e\u30b3\u30b5\u30a4\u30f3\u985e\u4f3c\u5ea6\u306e\u8a08\u7b97\u6642\u306b\u306e\u307f\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002<br>\u3053\u306e\u7d50\u679c\u3001\u6b63\u89e3\u30af\u30e9\u30b9\u3068\u306e\u30b3\u30b5\u30a4\u30f3\u985e\u4f3c\u5ea6\u306f\u30de\u30fc\u30b8\u30f3\u5206\u3060\u3051\u672c\u6765\u306e\u5024\u3088\u308a\u60aa\u304f\u306a\u308a\u307e\u3059\u3002<br>\u5927\u96d1\u628a\u306a\u4f8b\u3048\u3068\u3057\u3066\u306f\u300c100\u70b9\u6e80\u70b9\u4e2d90\u70b9\u53d6\u308c\u3066\u3044\u308b\u306b\u3082\u95a2\u308f\u3089\u305a\u3001\u7121\u7406\u3084\u308a20\u70b9\u6e1b\u70b9\u3057\u306670\u70b9\u3057\u304b\u53d6\u308c\u3066\u3044\u306a\u3044\u3088\u3046\u306b\u898b\u305b\u304b\u3051\u3066\u3044\u308b\u300d\u3068\u8a00\u3063\u305f\u3068\u3053\u308d\u3067\u3057\u3087\u3046\u304b\u3002<br>\u305d\u306e\u4e0a\u3067\u3001\u300c\u3082\u3063\u3068\u52c9\u5f37\u3057\u308d\u300d\u3068\u767a\u7834\u3092\u304b\u3051\u308b\u8a33\u3067\u3059\u3002<br>\u306a\u304b\u306a\u304b\u9177\u3044\u8a71\u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e0a\u8a18\u3067ArcFace\u306e\u640d\u5931\u95a2\u6570\u306e\u69cb\u9020\u7684\u306a\u610f\u5473\u3092\u7406\u89e3\u3067\u304d\u305f\u304b\u3068\u601d\u3044\u307e\u3059\u304c\u3001\u6539\u3081\u3066Softmax\u90e8\u5206\u3092\u898b\u308b\u3068\u3001\u305d\u306e\u5024\uff08\u6b63\u89e3\u78ba\u5ea6\uff09\u3092\u5897\u6e1b\u3055\u305b\u308b\u8981\u56e0\u306f\u4ee5\u4e0b\u306e2\u70b9\u3067\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u30c7\u30fc\u30bf\uff08i\uff09\u306e\u30d9\u30af\u30c8\u30eb\u3068\u5f53\u8a72\u30af\u30e9\u30b9\u306e\u4ee3\u8868\u30d9\u30af\u30c8\u30eb\u3068\u306e\u8ddd\u96e2\u306e\u8fd1\u3055\uff08\u5206\u5b50\u306e\u5927\u304d\u3055\u306b\u5f71\u97ff\uff09<\/li>\n\n\n\n<li>\u30c7\u30fc\u30bf\uff08i\uff09\u306e\u30d9\u30af\u30c8\u30eb\u3068\u4ed6\u306e\u30af\u30e9\u30b9\u306e\u4ee3\u8868\u30d9\u30af\u30c8\u30eb\u3068\u306e\u8ddd\u96e2\u306e\u9060\u3055\uff08\u5206\u6bcd\u306e\u5927\u304d\u3055\u306b\u5f71\u97ff\uff09<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">\u3064\u307e\u308a\u3001\u640d\u5931\u3092\u5c0f\u3055\u304f\u3059\u308b\u305f\u3081\u306b\u306f\u30c7\u30fc\u30bf\uff08i\uff09\u306e\u30d9\u30af\u30c8\u30eb\u3092\u5f53\u8a72\u30af\u30e9\u30b9\u306e\u4ee3\u8868\u30d9\u30af\u30c8\u30eb\u306b\u8fd1\u3065\u3051\u308b\u3068\u540c\u6642\u306b\u3001\u4ed6\u306e\u30af\u30e9\u30b9\u306e\u4ee3\u8868\u30d9\u30af\u30c8\u30eb\u304b\u3089\u9060\u3056\u3051\u308b\u5fc5\u8981\u304c\u751f\u3058\u307e\u3059\u3002<br>\u3053\u306e\u4f5c\u7528\u306b\u3088\u308a\u3001\u7279\u5fb4\u62bd\u51fa\u5668\u304c\u51fa\u529b\u3059\u308b\u7279\u5fb4\u91cf\uff08\u30d9\u30af\u30c8\u30eb\uff09\u304c\u3001\u540c\u3058\u30af\u30e9\u30b9\u3067\u96c6\u307e\u308a\u3001\u9055\u3046\u30af\u30e9\u30b9\u3068\u306f\u96e2\u308c\u308b\u3088\u3046\u306b\u8a13\u7df4\u3055\u308c\u3066\u3044\u304f\u8a33\u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e0a\u8a18\u5185\u5bb9\u3092\u8e0f\u307e\u3048\u3064\u3064\u3001\u6539\u3081\u3066\u30c8\u30ea\u30d7\u30ec\u30c3\u30c8\u5b66\u7fd2\u3068ArcFace\u5b66\u7fd2\u306e\u9055\u3044\u3092\u898b\u3066\u307f\u307e\u3057\u3087\u3046\uff08AI\u5148\u751f\u307e\u3068\u3081\uff09\u3002<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td><\/td><td>\u30c8\u30ea\u30d7\u30ec\u30c3\u30c8\u5b66\u7fd2<\/td><td>ArcFace\u5b66\u7fd2<\/td><\/tr><tr><td>\u5b66\u7fd2\u306e\u57fa\u672c\u539f\u7406<\/td><td>\u30b5\u30f3\u30d7\u30eb\u9593\u306e\u76f8\u5bfe\u8ddd\u96e2\u3092\u6700\u9069\u5316<br>Anchor, Positive, Negative\u306e3\u70b9\u6bd4\u8f03<\/td><td>\u30af\u30e9\u30b9\u4ee3\u8868\u30d9\u30af\u30c8\u30eb\u3068\u306e\u89d2\u5ea6\u3092\u6700\u9069\u5316<br>\u5168\u30af\u30e9\u30b9\u3068\u306e\u540c\u6642\u6bd4\u8f03<\/td><\/tr><tr><td>\u6bd4\u8f03\u5bfe\u8c61<\/td><td>\u30d0\u30c3\u30c1\u5185\u306e\u7279\u5b9a\u306e\u300c\u753b\u50cf\u300d\u540c\u58eb<\/td><td>\u753b\u50cf x \u3068\u300c\u30af\u30e9\u30b9\u91cd\u5fc3\uff08\u91cd\u307f W\uff09\u300d<\/td><\/tr><tr><td>\u30e1\u30e2\u30ea\u52b9\u7387<\/td><td>\u4f4e\u3044<br>\u6709\u52b9\u306a\u30da\u30a2\u3092\u4f5c\u308b\u305f\u3081\u306b\u5de8\u5927\u306a\u30d0\u30c3\u30c1\u304c\u5fc5\u8981<\/td><td>\u9ad8\u3044<br>\u5b9f\u30d0\u30c3\u30c11\u3067\u3082\u5168\u30af\u30e9\u30b9\u3068\u5bfe\u5cd9\u3067\u304d\u308b<\/td><\/tr><tr><td>\u30b5\u30f3\u30d7\u30ea\u30f3\u30b0<\/td><td>\u5fc5\u9808 (Hard Negative Mining)<br>\u4f3c\u305f\u753b\u50cf\u3092\u63a2\u3059\u51e6\u7406\u304c\u975e\u5e38\u306b\u9762\u5012<\/td><td>\u4e0d\u8981<br>\u91cd\u307f\u884c\u5217 W \u304c\u5168\u30af\u30e9\u30b9\u306e\u60c5\u5831\u3092\u4fdd\u6301\u3057\u3066\u3044\u308b<\/td><\/tr><tr><td>\u5b66\u7fd2\u306e\u5b89\u5b9a\u6027<\/td><td>\u4f4e\u3044<br>\u5d29\u58ca\u3057\u3084\u3059\u304f\u3001\u8abf\u6574\u304c\u96e3\u3057\u3044<\/td><td>\u9ad8\u3044<br>\u53ce\u675f\u304c\u901f\u304f\u3001\u975e\u5e38\u306b\u5b89\u5b9a\u3057\u3066\u3044\u308b<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u30c8\u30ea\u30d7\u30ec\u30c3\u30c8\u5b66\u7fd2\u306b\u304a\u3044\u3066\u306f\u3001\u30c8\u30ea\u30d7\u30ec\u30c3\u30c8\uff08\u30a2\u30f3\u30ab\u30fc\u30fb\u30dd\u30b8\u30c6\u30a3\u30d6\u30fb\u30cd\u30ac\u30c6\u30a3\u30d6\uff09\u3092\u69cb\u6210\u3059\u308b\u30c7\u30fc\u30bf\u3092\u9069\u6b63\uff08\u9069\u3057\u305f\u96e3\u6613\u5ea6\uff09\u306b\u306a\u308b\u3088\u3046\u9078\u629e\u3059\u308b\u3053\u3068\u3084\u3001\u30d0\u30c3\u30c1\u5185\u306e\u30c8\u30ea\u30d7\u30ec\u30c3\u30c8\u306e\u591a\u69d8\u6027\u3092\u78ba\u4fdd\u3059\u308b\u3053\u3068\u304c\u7cbe\u5ea6\u306b\u5927\u304d\u304f\u5f71\u97ff\u3059\u308b\u3053\u3068\u304c\u4f53\u9a13\u7684\u306b\u3082\u5206\u304b\u3063\u3066\u3044\u307e\u3059\u3002<br>ArcFace\u3067\u306f\u4e0a\u8a18\u306e\u3088\u3046\u306a\u64cd\u4f5c\u304c\u5fc5\u8981\u306a\u3044\u305f\u3081\u3001\u305d\u306e\u70b9\u3067\u306f\u7cbe\u5ea6\u3092\u5b89\u5b9a\u7684\u306b\u5411\u4e0a\u3055\u305b\u3084\u3059\u3044\u65b9\u5f0f\u3067\u3042\u308b\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u307e\u305f\u3001ArcFace\u306f\u7cbe\u5ea6\u306e\u9762\u3067\u30d0\u30c3\u30c1\u30b5\u30a4\u30ba\u306e\u5f71\u97ff\u3092\u53d7\u3051\u306b\u304f\u3044\u305f\u3081\u3001\u30d0\u30c3\u30c1\u30b5\u30a4\u30ba\u3092\u5c0f\u3055\u304f\u3067\u304d\u307e\u3059\uff08\u51e6\u7406\u901f\u5ea6\u306b\u306f\u5f71\u97ff\u304c\u3042\u308b\u3088\u3046\u3067\u3059\u304c\uff09\u3002<br>\u5404\u7a2e\u30cf\u30a4\u30d1\u30fc\u30d1\u30e9\u30e1\u30fc\u30bf\u306e\u8abf\u6574\u306b\u304a\u3044\u3066\u30e1\u30e2\u30ea\u6d88\u8cbb\u91cf\u304c\u53b3\u3057\u304f\u306a\u3063\u3066\u304d\u305f\u969b\u306b\u3001\u305d\u306e\u76ba\u5bc4\u305b\u3092\u30d0\u30c3\u30c1\u30b5\u30a4\u30ba\u3067\u89e3\u6c7a\u3067\u304d\u308b\u70b9\u306f\u3001\u304b\u306a\u308a\u4fbf\u5229\u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u3057\u304b\u3057\u3001\u30c8\u30ea\u30d7\u30ec\u30c3\u30c8\u5b66\u7fd2\u3092\u63d0\u6848\u3057\u305f\u306e\u3082AI\u5148\u751f\u3060\u3063\u305f\u306e\u3067\u3059\u304c\u3001\u4e0a\u8a18\u3092\u898b\u308b\u9650\u308a\u3001\u6c17\u6301\u3061\u304c\u826f\u3044\u7a0b\u306e\u30c7\u30a3\u30b9\u308a\u3063\u3077\u308a\u3067\u3059\u3002<br>\u3060\u3063\u305f\u3089\u3001\u6700\u521d\u304b\u3089ArcFace\u3092\u85a6\u3081\u3066\u304f\u308c\u308c\u3070\u3068\u601d\u3046\u306e\u3067\u3059\u304c\u2026<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u307e\u3068\u3081<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u4eca\u56de\u306f\u3001\u65b0\u30e2\u30c7\u30eb\uff08DINOv2\uff09\u3067\u306e\u5b66\u7fd2\u306b\u5411\u3051\u3066\u65b0\u305f\u306b\u63a1\u7528\u3057\u305fLoRA\u3068ArcFace\u306b\u95a2\u3057\u3066\u66f8\u3044\u3066\u307f\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">LoRA\u306f\u5b66\u7fd2\u5185\u5bb9\uff08\u30d1\u30e9\u30e1\u30fc\u30bf\u306e\u5909\u66f4\u5185\u5bb9\uff09\u3092\u52b9\u7387\u7684\u306b\u7ba1\u7406\u3059\u308b\u65b9\u6cd5\u3001ArcFace\u306f\u30c7\u30fc\u30bf\u306e\u9078\u629e\u65b9\u6cd5\u3084\u7d44\u307f\u5408\u308f\u305b\u3092\u6c17\u306b\u3059\u308b\u5fc5\u8981\u304c\u306a\u304f\u3001\u30e1\u30e2\u30ea\u52b9\u7387\u7684\u306b\u3082\u512a\u308c\u305f\u5b66\u7fd2\u65b9\u6cd5\u3068\u8a00\u3063\u305f\u3068\u3053\u308d\u3067\u3057\u3087\u3046\u304b\u3002<br>\u3053\u308c\u3089\u6280\u8853\u306fDINOv2\u3060\u304b\u3089\u3001\u3042\u308b\u3044\u306fViT\u3060\u304b\u3089\u6709\u52b9\u3068\u8a00\u3046\u8a33\u3067\u306f\u306a\u304f\u3001ResNet50\u3084EfficientNetV2L\u306a\u3069\u306eCNN\u7cfb\u30e2\u30c7\u30eb\u3068\u3082\u7d44\u307f\u5408\u308f\u305b\u53ef\u80fd\u3089\u3057\u3044\u3067\u3059\u3002<br>\u7e70\u308a\u8fd4\u3057\u306b\u306a\u308a\u307e\u3059\u304c\u3001\u3082\u3063\u3068\u65e9\u304f\u6559\u3048\u3066\u304f\u308c\u3066\u3044\u308c\u3070\u2026\u3068\u601d\u3044\u307e\u3059\u304c\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u306a\u304a\u3001\u4eca\u307e\u3067\u306e\u6295\u7a3f\u306e\u6d41\u5100\u304b\u3089\u3059\u308c\u3070\u3001LoRA\u3084ArcFace\u3068\u8a00\u3063\u305f\u5468\u8fba\u6a5f\u80fd\u3067\u306f\u306a\u304f\u3001\u6700\u3082\u91cd\u8981\u6027\u306e\u9ad8\u3044\u30d9\u30fc\u30b9\u30e2\u30c7\u30eb\uff08DINOv2\uff09\u306e\u8a71\u3092\u771f\u3063\u5148\u306b\u3057\u3066\u304d\u305f\u304b\u3068\u601d\u3044\u307e\u3059\u3002<br>\u306a\u305c\u3001\u305d\u3046\u3057\u306a\u3044\u306e\u304b\uff1f<br>\u305d\u308c\u306f\u3001DINOv2\u304c\u5168\u7136\u4f7f\u3044\u7269\u306b\u306a\u3063\u3066\u3044\u306a\u3044\u304b\u3089\u3067\u3059\u3002<br>\u3053\u308c\u306fDINOv2\u304c\u60aa\u3044\u3068\u3044\u3046\u3053\u3068\u3067\u306f\u306a\u304f\u3001\u30ef\u30a4\u30f3\u753b\u50cf\u8b58\u5225\u3068\u3044\u3046\u76ee\u7684\u3068\u306e\u76f8\u6027\u3084\u3001\u7528\u610f\u3067\u304d\u308b\u30c7\u30fc\u30bf\u91cf\u3001\u958b\u767a\u74b0\u5883\u306e\u30b9\u30da\u30c3\u30af\u306a\u3069\u69d8\u3005\u306a\u8981\u56e0\u306b\u3088\u308b\u3082\u306e\u304b\u3068\u601d\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p 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