{"id":97743,"date":"2026-08-30T05:48:48","date_gmt":"2026-08-29T21:48:48","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/97743.html"},"modified":"2026-08-30T05:48:48","modified_gmt":"2026-08-29T21:48:48","slug":"%e6%9c%80%e7%bb%8f%e5%85%b8%e7%9a%84%e5%85%83%e5%ad%a6%e4%b9%a0%e5%99%a8maml%e7%ae%97%e6%b3%95","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/97743.html","title":{"rendered":"\u6700\u7ecf\u5178\u7684\u5143\u5b66\u4e60\u5668MAML\u7b97\u6cd5"},"content":{"rendered":"

\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"<\/p>\n

\u4e00\u3001\u5143\u5b66\u4e60\u4e0eMAML\u6838\u5fc3\u5b9a\u4f4d<\/h3>\n

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\u4e8c\u3001MAML\u539f\u7406\u4e0e\u53cc\u5c42\u4f18\u5316\u67b6\u6784<\/h3>\n

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\u03b8\u1d62\u2032\u207d\u1d4f\u207e = \u03b8\u1d62\u2032\u207d\u1d4f\u207b\u00b9\u207e \u2212 \u03b1 \u2207\u03b8\u1d62\u2032\u207d\u1d4f\u207b\u00b9\u207e L𝒯\u1d62(\u03b8\u1d62\u2032\u207d\u1d4f\u207b\u00b9\u207e, D\u1d62\u209c\u1d63) \u5185\u5c42\u4f18\u5316\u7684\u6838\u5fc3\u610f\u4e49：\u6a21\u62df\u6a21\u578b\u5feb\u901f\u9002\u914d\u65b0\u4efb\u52a1\u7684\u80fd\u529b，\u8ba9\u521d\u59cb\u53c2\u6570\u5177\u5907\u201c\u4e00\u6b65\u5fae\u8c03\u5373\u6536\u655b\u201d\u7684\u6f5c\u529b，\u800c\u975e\u62df\u5408\u5355\u4e00\u4efb\u52a1\u3002\u6574\u4e2a\u5185\u5c42\u8fc7\u7a0b\u4ec5\u505a\u53c2\u6570\u5fae\u8c03，\u4e0d\u66f4\u65b0\u5168\u5c40\u521d\u59cb\u53c2\u6570 \u03b8\u3002 3.\u5916\u5c42\u4f18\u5316：\u5143\u53c2\u6570\u5168\u5c40\u66f4\u65b0 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\u03b8 \u2212 \u03b2 \u2207\u03b8 \u2211(𝒯\u1d62\u223cp(𝒯)) L𝒯\u1d62(\u03b8\u1d62\u2032) \u7b80\u5355\u6765\u8bf4：\u5185\u5c42\u5b66\u201c\u5355\u4e2a\u4efb\u52a1\u600e\u4e48\u5feb\u901f\u9002\u914d\u201d，\u5916\u5c42\u5b66\u201c\u4ec0\u4e48\u6837\u7684\u521d\u59cb\u53c2\u6570\u80fd\u9002\u914d\u6240\u6709\u4efb\u52a1\u201d，\u53cc\u5c42\u5d4c\u5957\u4f18\u5316\u6784\u6210MAML\u7684\u5b8c\u6574\u5b66\u4e60\u903b\u8f91\u3002<\/p>\n

\u4e09\u3001MAML\u5b8c\u6574\u6570\u5b66\u63a8\u5bfc<\/h3>\n

MAML\u7684\u6838\u5fc3\u96be\u70b9\u4e0e\u6280\u672f\u7cbe\u9ad3\u5728\u4e8e\u4e8c\u9636\u68af\u5ea6\u7684\u94fe\u5f0f\u6c42\u5bfc\u2014\u2014\u5916\u5c42\u68af\u5ea6\u9700\u8981\u5bf9\u201c\u5185\u5c42\u68af\u5ea6\u66f4\u65b0\u540e\u7684\u53c2\u6570\u201d\u518d\u6b21\u6c42\u5bfc，\u5305\u542b\u4e00\u9636\u68af\u5ea6\u4e0e\u4e8c\u9636\u68af\u5ea6\u9879，\u8fd9\u4e5f\u662fMAML\u4e0e\u666e\u901a\u5fae\u8c03\u3001\u9884\u8bad\u7ec3\u7684\u672c\u8d28\u533a\u522b\u3002\u4e0b\u6587\u5b8c\u6210\u4ece\u5355\u4efb\u52a1\u5230\u6279\u91cf\u4efb\u52a1\u7684\u5b8c\u6574\u4e25\u8c28\u63a8\u5bfc\u3002 1.\u5355\u4efb\u52a1\u68af\u5ea6\u63a8\u5bfc \u56fa\u5b9a\u5355\u4e2a\u4efb\u52a1 𝒯\u1d62，\u5185\u5c42\u5355\u6b65\u66f4\u65b0\u5f97\u5230\u9002\u914d\u53c2\u6570： \u03b8\u1d62\u2032 = \u03b8 \u2212 \u03b1 g\u03b8, g\u03b8 = \u2207\u03b8 L\u209c\u1d63(\u03b8) \u5176\u4e2d L\u209c\u1d63(\u03b8) \u4e3a\u652f\u6301\u96c6\u8bad\u7ec3\u635f\u5931\u3002\u5916\u5c42\u9700\u8981\u6700\u5c0f\u5316\u67e5\u8be2\u96c6\u635f\u5931 L\u209c\u2091(\u03b8\u1d62\u2032)，\u56e0\u6b64\u5143\u68af\u5ea6\u4e3a\u635f\u5931\u5bf9\u521d\u59cb\u53c2\u6570 \u03b8 \u7684\u68af\u5ea6： \u2207\u03b8 L\u209c\u2091(\u03b8\u1d62\u2032) = \u2207\u03b8\u1d62\u2032 L\u209c\u2091(\u03b8\u1d62\u2032) \u00b7 \u2202\u03b8\u1d62\u2032 \/ \u2202\u03b8 \u5bf9\u5185\u5c42\u66f4\u65b0\u516c\u5f0f\u6c42\u504f\u5bfc，\u5f97\u5230\u6838\u5fc3\u96c5\u514b\u6bd4\u77e9\u9635\u9879： \u2202\u03b8\u1d62\u2032 \/ \u2202\u03b8 = I \u2212 \u03b1 \u2202g\u03b8 \/ \u2202\u03b8 = I \u2212 \u03b1 \u2207\u03b8\u00b2 L\u209c\u1d63(\u03b8) \u4ee3\u5165\u5143\u68af\u5ea6\u516c\u5f0f，\u5f97\u5230\u7cbe\u786eMAML\u5143\u68af\u5ea6： \u2207\u03b8 L\u2098\u2091\u209c\u2090 = \u2207\u03b8\u1d62\u2032 L\u209c\u2091(\u03b8\u1d62\u2032) \u00b7 (I \u2212 \u03b1 \u2207\u03b8\u00b2 L\u209c\u1d63(\u03b8)) \u8be5\u516c\u5f0f\u5305\u542b\u4e24\u4e2a\u5173\u952e\u68af\u5ea6\u9879： \u4e00\u9636\u68af\u5ea6\u9879：\u2207\u03b8\u1d62\u2032 L\u209c\u2091(\u03b8\u1d62\u2032)，\u9002\u914d\u540e\u53c2\u6570\u5728\u67e5\u8be2\u96c6\u7684\u635f\u5931\u68af\u5ea6； \u4e8c\u9636\u68af\u5ea6\u9879：\u2207\u03b8\u00b2 L\u209c\u1d63(\u03b8)，\u8bad\u7ec3\u635f\u5931\u5bf9\u521d\u59cb\u53c2\u6570\u7684\u4e8c\u9636\u5bfc\u6570（\u6d77\u68ee\u77e9\u9635）\u3002 2.\u8fd1\u4f3cMAML（\u4e00\u9636MAML）\u63a8\u5bfc \u4e8c\u9636\u68af\u5ea6\u7684\u8ba1\u7b97\u3001\u5b58\u50a8\u6210\u672c\u6781\u9ad8，\u4f1a\u5927\u5e45\u63d0\u5347\u8bad\u7ec3\u5f00\u9500\u3002\u56e0\u6b64\u5b9e\u9645\u5de5\u7a0b\u4e2d\u666e\u904d\u4f7f\u7528\u4e00\u9636MAML（FOMAML），\u6838\u5fc3\u7b80\u5316\u903b\u8f91：\u5ffd\u7565\u4e8c\u9636\u68af\u5ea6\u9879，\u4ec5\u4fdd\u7559\u4e00\u9636\u68af\u5ea6\u5b8c\u6210\u5143\u66f4\u65b0\u3002 \u4ee4\u4e8c\u9636\u68af\u5ea6\u9879\u4e3a0，\u5373 \u2207\u03b8\u00b2 L\u209c\u1d63(\u03b8) \u2248 0，\u5219\u96c5\u514b\u6bd4\u77e9\u9635\u8fd1\u4f3c\u4e3a\u5355\u4f4d\u77e9\u9635： \u2202\u03b8\u1d62\u2032 \/ \u2202\u03b8 \u2248 I \u6700\u7ec8\u4e00\u9636MAML\u5143\u68af\u5ea6\u7b80\u5316\u4e3a： \u2207\u03b8 L\u2098\u2091\u209c\u2090 \u2248 \u2207\u03b8\u1d62\u2032 L\u209c\u2091(\u03b8\u1d62\u2032) \u5927\u91cf\u5b9e\u9a8c\u8bc1\u660e，\u4e00\u9636MAML\u4ec5\u635f\u5931\u5c11\u91cf\u7cbe\u5ea6，\u5374\u80fd\u964d\u4f4e90%\u4ee5\u4e0a\u7684\u8ba1\u7b97\u5f00\u9500，\u662f\u5de5\u4e1a\u843d\u5730\u7684\u4e3b\u6d41\u7248\u672c\u3002\u540c\u65f6\u4e5f\u9a8c\u8bc1\u4e86MAML\u7684\u6838\u5fc3\u6536\u76ca\u6765\u81ea\u5185\u5c42\u66f4\u65b0\u7ed3\u6784，\u800c\u975e\u7cbe\u786e\u7684\u4e8c\u9636\u68af\u5ea6\u8ba1\u7b97\u3002 3.\u6279\u91cf\u4efb\u52a1\u5143\u66f4\u65b0\u63a8\u5bfc \u5b9e\u9645\u8bad\u7ec3\u4e2d\u91c7\u7528\u6279\u91cf\u4efb\u52a1\u91c7\u6837（Task Batch），\u5355\u6b21\u8fed\u4ee3\u91c7\u6837 N \u4e2a\u4efb\u52a1，\u7d2f\u52a0\u6240\u6709\u4efb\u52a1\u7684\u5143\u68af\u5ea6\u5b8c\u6210\u66f4\u65b0，\u6700\u7ec8\u6279\u91cf\u66f4\u65b0\u516c\u5f0f： \u03b8 \u2190 \u03b8 \u2212 \u03b2 \u00b7 (1\/N) \u2211\u1d62\u208c\u2081\u1d3a \u2207\u03b8\u1d62\u2032 L𝒯\u1d62(\u03b8\u1d62\u2032) \u00b7 (I \u2212 \u03b1 \u2207\u03b8\u00b2 L\u2071\u209c\u1d63(\u03b8)) \u4e00\u9636\u8fd1\u4f3c\u6279\u91cf\u66f4\u65b0\u516c\u5f0f： \u03b8 \u2190 \u03b8 \u2212 \u03b2 \u00b7 (1\/N) \u2211\u1d62\u208c\u2081\u1d3a \u2207\u03b8\u1d62\u2032 L𝒯\u1d62(\u03b8\u1d62\u2032)<\/p>\n

\u56db\u3001MAML\u5b8c\u6574\u8bad\u7ec3\u4e0e\u6d4b\u8bd5\u6d41\u7a0b<\/h3>\n

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\u4e94\u3001MAML\u6838\u5fc3\u75db\u70b9\u4e0e\u7f3a\u9677\u6df1\u5ea6\u5256\u6790<\/h3>\n

\u4f5c\u4e3a\u7ecf\u5178\u5143\u5b66\u4e60\u57fa\u7ebf，MAML\u5960\u5b9a\u4e86\u57fa\u4e8e\u4f18\u5316\u7684\u5143\u5b66\u4e60\u8303\u5f0f，\u4f46\u5728\u5b9e\u9645\u843d\u5730\u4e2d\u5b58\u5728\u8bf8\u591a\u56fa\u6709\u7f3a\u9677，\u6db5\u76d6\u8ba1\u7b97\u6548\u7387\u3001\u8d85\u53c2\u654f\u611f\u3001\u6536\u655b\u7a33\u5b9a\u6027\u3001\u6cdb\u5316\u80fd\u529b\u7b49\u591a\u4e2a\u7ef4\u5ea6，\u4e5f\u662f\u540e\u7eedReptile\u3001LEO\u3001Meta-SGD\u7b49\u4f18\u5316\u7b97\u6cd5\u7684\u6539\u8fdb\u6838\u5fc3\u65b9\u5411\u3002 1.\u8ba1\u7b97\u5f00\u9500\u6781\u5927，\u8bad\u7ec3\u6210\u672c\u9ad8\u6602 \u8fd9\u662fMAML\u6700\u6838\u5fc3\u3001\u6700\u81f4\u547d\u7684\u75db\u70b9\u3002\u6807\u51c6MAML\u9700\u8981\u8ba1\u7b97\u4e8c\u9636\u68af\u5ea6，\u5d4c\u5957\u53cc\u5c42\u68af\u5ea6\u8fed\u4ee3\u7684\u8ba1\u7b97\u91cf\u8fdc\u5927\u4e8e\u4f20\u7edf\u6df1\u5ea6\u5b66\u4e60：\u5185\u5c42\u6bcf\u4e2a\u4efb\u52a1\u90fd\u9700\u5355\u72ec\u68af\u5ea6\u66f4\u65b0，\u5916\u5c42\u518d\u5bf9\u6240\u6709\u5185\u5c42\u66f4\u65b0\u7ed3\u679c\u6c42\u5bfc，\u68af\u5ea6\u8ba1\u7b97\u3001\u53c2\u6570\u5b58\u50a8\u3001\u663e\u5b58\u5360\u7528\u5448\u500d\u6570\u589e\u957f\u3002 \u5373\u4f7f\u662f\u4e00\u9636MAML\u820d\u5f03\u4e8c\u9636\u68af\u5ea6，\u4ecd\u9700\u4e3a\u6bcf\u4e2a\u91c7\u6837\u4efb\u52a1\u5355\u72ec\u6267\u884c\u5185\u5c42\u5fae\u8c03，\u6279\u91cf\u4efb\u52a1\u53e0\u52a0\u540e，\u8bad\u7ec3\u901f\u5ea6\u8fdc\u6162\u4e8e\u666e\u901a\u9884\u8bad\u7ec3\u3001\u5fae\u8c03\u8303\u5f0f\u3002\u5728\u5927\u89c4\u6a21\u4efb\u52a1\u5206\u5e03\u3001\u6df1\u5c42\u7f51\u7edc\u573a\u666f\u4e0b，MAML\u7684\u8bad\u7ec3\u786c\u4ef6\u95e8\u69db\u6781\u9ad8，\u6781\u5927\u9650\u5236\u4e86\u5de5\u4e1a\u843d\u5730\u573a\u666f\u3002 2.\u8d85\u53c2\u6570\u6781\u5ea6\u654f\u611f，\u7a33\u5b9a\u6027\u6781\u5dee MAML\u7684\u6027\u80fd\u9ad8\u5ea6\u4f9d\u8d56\u8d85\u53c2\u6570\u7ec4\u5408，\u9c81\u68d2\u6027\u6781\u4f4e，\u5fae\u5c0f\u7684\u53c2\u6570\u8c03\u6574\u5373\u53ef\u5bfc\u81f4\u6a21\u578b\u9707\u8361\u3001\u4e0d\u6536\u655b\u6216\u6027\u80fd\u66b4\u8dcc，\u6838\u5fc3\u654f\u611f\u8d85\u53c2\u6570\u5305\u62ec：\u5185\u5916\u5c42\u5b66\u4e60\u7387\u3001\u5185\u5c42\u8fed\u4ee3\u6b65\u6570\u3001\u4efb\u52a1\u6279\u6b21\u5927\u5c0f\u3001\u5355\u4efb\u52a1\u6837\u672c\u6570\u3002 \u5177\u4f53\u8868\u73b0\u4e3a：\u5185\u5c42\u5b66\u4e60\u7387\u8fc7\u5927\u4f1a\u5bfc\u81f4\u5355\u4efb\u52a1\u9002\u914d\u8fc7\u62df\u5408，\u8fc7\u5c0f\u5219\u65e0\u6cd5\u6709\u6548\u5fae\u8c03；\u5916\u5c42\u5b66\u4e60\u7387\u8fc7\u5927\u4f1a\u51b2\u5237\u901a\u7528\u521d\u59cb\u53c2\u6570，\u8fc7\u5c0f\u5219\u5143\u5b66\u4e60\u6536\u655b\u6781\u6162；\u5185\u5c42\u6b65\u6570\u8fc7\u591a\u6613\u8fc7\u62df\u5408\u5355\u4efb\u52a1，\u8fc7\u5c11\u5219\u9002\u914d\u4e0d\u5145\u5206\u3002\u8d85\u53c2\u6570\u8c03\u4f18\u6210\u672c\u6781\u9ad8，\u65e0\u901a\u7528\u6700\u4f18\u7ec4\u5408，\u9700\u9488\u5bf9\u4e0d\u540c\u573a\u666f\u53cd\u590d\u8c03\u8bd5\u3002 3.\u53cc\u5c42\u4f18\u5316\u51b2\u7a81，\u6613\u9677\u5165\u5c40\u90e8\u6700\u4f18 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\u4e03\u3001\u603b\u7ed3<\/h3>\n

MAML\u4f5c\u4e3a\u5143\u5b66\u4e60\u9886\u57df\u7684\u91cc\u7a0b\u7891\u7b97\u6cd5，\u5176\u6838\u5fc3\u4ef7\u503c\u4e0d\u5728\u4e8e\u6781\u81f4\u7684\u6027\u80fd，\u800c\u5728\u4e8e\u5f00\u521b\u4e86\u57fa\u4e8e\u53c2\u6570\u521d\u59cb\u5316\u7684\u5143\u5b66\u4e60\u8303\u5f0f，\u5f7b\u5e95\u98a0\u8986\u4e86\u4f20\u7edf\u201c\u5355\u4efb\u52a1\u8bad\u7ec3\u3001\u56fa\u5b9a\u53c2\u6570\u63a8\u7406\u201d\u7684\u6df1\u5ea6\u5b66\u4e60\u903b\u8f91，\u5efa\u7acb\u4e86\u201c\u5b66\u901a\u7528\u521d\u59cb\u5316\u3001\u5feb\u901f\u9002\u914d\u65b0\u4efb\u52a1\u201d\u7684\u5168\u65b0\u5b66\u4e60\u4f53\u7cfb\u3002\u5176\u6a21\u578b\u65e0\u5173\u3001\u9002\u914d\u573a\u666f\u5e7f\u3001\u903b\u8f91\u7b80\u6d01\u7684\u4f18\u52bf，\u4f7f\u5176\u81f3\u4eca\u4ecd\u662f\u5c11\u6837\u672c\u5b66\u4e60\u3001\u5143\u5b66\u4e60\u7814\u7a76\u4e0e\u843d\u5730\u7684\u6838\u5fc3\u57fa\u7ebf\u3002 \u540c\u65f6，MAML\u7684\u56fa\u6709\u7f3a\u9677\u4e5f\u660e\u786e\u4e86\u5143\u5b66\u4e60\u7684\u6838\u5fc3\u4f18\u5316\u65b9\u5411：\u89e3\u51b3\u53cc\u5c42\u4f18\u5316\u7684\u8ba1\u7b97\u5197\u4f59\u3001\u8bad\u7ec3\u4e0d\u7a33\u5b9a\u3001\u6cdb\u5316\u53d7\u9650\u7b49\u95ee\u9898\u3002\u7406\u89e3MAML\u7684\u53cc\u5c42\u4f18\u5316\u539f\u7406\u3001\u5b8c\u6574\u68af\u5ea6\u63a8\u5bfc\u4e0e\u6838\u5fc3\u75db\u70b9，\u662f\u638c\u63e1\u73b0\u4ee3\u5143\u5b66\u4e60\u4f53\u7cfb\u3001\u843d\u5730\u5c11\u6837\u672c\u667a\u80fd\u6a21\u578b\u7684\u6838\u5fc3\u57fa\u7840\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

\u4e00\u3001\u5143\u5b66\u4e60\u4e0eMAML\u6838\u5fc3\u5b9a\u4f4d
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