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\"\u81f3\u77e5\u7814\u7a76\u9662\u63d0\u51fa\u5927\u6a21\u578b\u53ef\u89e3\u91ca\u6027\u65b0\u8def\u7ebf\uff1a\u62c6\u6743\u91cd\uff0c\u6570\u636e\u6210\u672c\u4e0d\u52301%\"\/<\/div><\/figure>\n
\"\u81f3\u77e5\u7814\u7a76\u9662\u63d0\u51fa\u5927\u6a21\u578b\u53ef\u89e3\u91ca\u6027\u65b0\u8def\u7ebf\uff1a\u62c6\u6743\u91cd\uff0c\u6570\u636e\u6210\u672c\u4e0d\u52301%\"\/<\/div><\/figure>\n
\"\u81f3\u77e5\u7814\u7a76\u9662\u63d0\u51fa\u5927\u6a21\u578b\u53ef\u89e3\u91ca\u6027\u65b0\u8def\u7ebf\uff1a\u62c6\u6743\u91cd\uff0c\u6570\u636e\u6210\u672c\u4e0d\u52301%\"\/<\/div><\/figure>\n
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\u5141\u4e2d \u53d1\u81ea \u51f9\u975e\u5bfa<\/p>\n

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Transcoder\u3001\u7a00\u758f\u7279\u5f81\u6a21\u5757\u7b49\u65b9\u6cd5\u4f1a\u5b66\u4e60\u4e00\u7ec4\u65b0\u7684\u5185\u90e8\u5355\u5143\uff0c\u7528\u5b83\u4eec\u8fd1\u4f3c\u539f\u6a21\u578b\u67d0\u4e00\u5c42\u6216\u67d0\u4e2a\u6a21\u5757\u7684\u8ba1\u7b97\uff0c\u518d\u901a\u8fc7\u4fdd\u7559\u3001\u79fb\u9664\u8fd9\u4e9b\u5355\u5143\u6765\u5bfb\u627e\u4efb\u52a1\u56de\u8def\u3002<\/p>\n

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\u66f4\u7406\u60f3\u7684\u65b9\u6848\u5e94\u5f53\u540c\u65f6\u4fdd\u6301\u539f\u6a21\u578b\u884c\u4e3a\u3001\u63d0\u4f9b\u53ef\u72ec\u7acb\u5e72\u9884\u7684\u5355\u5143\uff0c\u5e76\u80fd\u4ee5\u8f83\u4f4e\u6210\u672c\u76f4\u63a5\u4ece\u5df2\u6709\u6743\u91cd\u4e2d\u6784\u9020\u3002<\/p>\n

\u81f3\u77e5\u521b\u65b0\u7814\u7a76\u9662\uff08IQuest Research\uff09\u4e0eSafe AI Forum\u3001\u725b\u6d25\u5927\u5b66\u3001\u65af\u5766\u798f\u5927\u5b66\u3001\u6e05\u534e\u5927\u5b66\u7684\u5408\u4f5c\u8005\u63d0\u51fa\u4e86\u4e00\u6761\u66f4\u76f4\u63a5\u7684\u8def\u7ebf\uff1a<\/p>\n

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\u8fd9\u5957\u65b9\u6cd5\u540d\u4e3a\u7a00\u758f\u6743\u91cd\u5206\u89e3\uff08Sparse Weight Decomposition\uff0cSWD\uff09\u3002<\/p>\n

\u5b83\u628a\u4e00\u4e2a\u7a20\u5bc6\u6743\u91cd\u77e9\u9635\u5206\u89e3\u4e3a\u4e24\u4e2a\u7a00\u758f\u77e9\u9635\uff0c\u5e76\u628a\u4e8c\u8005\u5171\u4eab\u7684\u4e2d\u95f4\u7ef4\u5ea6\u53d8\u6210\u53ef\u72ec\u7acb\u8bc4\u5206\u3001\u9009\u62e9\u548c\u6d88\u878d\u7684\u74f6\u9888\u5355\u5143\u3002\u7814\u7a76\u8005\u7531\u6b64\u53ef\u4ee5\u76f4\u63a5\u5728\u6743\u91cd\u4e0a\u62bd\u53d6\u4efb\u52a1\u56de\u8def\u3002<\/p>\n

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\u8bba\u6587\u5730\u5740\uff1ahttps:\/\/arxiv.org\/abs\/2608.03913<\/p>\n

\u25b3SWD\u65b9\u6cd5\u6982\u89c8\u3002\u9884\u8bad\u7ec3\u6a21\u578b\u4e2d\u7684\u7a20\u5bc6\u6743\u91cd\u88ab\u5206\u89e3\u4e3a\u4e24\u4e2a\u7a00\u758f\u56e0\u5b50\uff0c\u5171\u4eab\u4e2d\u95f4\u5750\u6807\u6210\u4e3a\u53ef\u72ec\u7acb\u8bc4\u5206\u3001\u9009\u62e9\u548c\u6d88\u878d\u7684\u74f6\u9888\u5355\u5143\u3002<\/p>\n

SWD\u7684\u51fa\u53d1\u70b9\u5f88\u7b80\u5355\u3002\u5bf9\u4e8e\u9884\u8bad\u7ec3\u6a21\u578b\u4e2d\u7684\u7a20\u5bc6\u6743\u91cd\u77e9\u9635W\uff0c\u5bfb\u627e\u4e24\u4e2a\u7a00\u758f\u77e9\u9635A\u548cB\uff0c\u4f7f\u5f97<\/p>\n

W \u2248 AB.<\/p>\n

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\u4e24\u79cd\u5206\u89e3\u90fd\u80fd\u5728\u6570\u503c\u4e0a\u7cbe\u786e\u590d\u73b0\u539f\u77e9\u9635\uff0c\u4f46\u5728\u76f8\u540c\u7684\u5f52\u56e0\u548c\u6d88\u878d\u6d41\u7a0b\u4e0b\uff0c\u9700\u8981\u66f4\u591a\u6d3b\u8dc3\u8fde\u63a5\u624d\u80fd\u8fbe\u5230\u4e0eSWD\u76f8\u540c\u7684\u4efb\u52a1\u8868\u73b0\u3002<\/p>\n

\u8fd9\u7ec4\u5bf9\u7167\u8868\u660e\uff0cSWD\u7684\u4f18\u52bf\u5e76\u4e0d\u662f\u201c\u628a\u77e9\u9635\u62c6\u5f00\u201d\u8fd9\u4e48\u7b80\u5355\uff0c\u771f\u6b63\u5173\u952e\u7684\u662f\u6bcf\u4e2a\u5355\u5143\u90fd\u5177\u6709\u7a00\u758f\u7684\u8bfb\u5199\u7ed3\u6784\u3002<\/p>\n

\u25b3\u7cbe\u786e\u7a20\u5bc6\u5206\u89e3\u5bf9\u7167\u3002Full-rank SVD\u4e0eRandom-B\u90fd\u80fd\u7cbe\u786e\u8fd8\u539f\u539f\u59cb\u6743\u91cd\uff0c\u4f46\u9700\u8981\u6bd4SWD\u66f4\u591a\u7684\u6d3b\u8dc3\u8fde\u63a5\u624d\u80fd\u8fbe\u5230\u76f8\u540c\u7684\u5145\u5206\u6027\u6216\u5fc5\u8981\u6027\u8981\u6c42\u3002<\/p>\n

\u5728\u8fdb\u884c\u56de\u8def\u5206\u6790\u4e4b\u524d\uff0c\u9996\u5148\u8981\u56de\u7b54\u4e00\u4e2a\u66f4\u57fa\u7840\u7684\u95ee\u9898\uff1a\u628a\u539f\u6743\u91cd\u6362\u6210\u7a00\u758f\u5206\u89e3\u4e4b\u540e\uff0c\u6a21\u578b\u8fd8\u662f\u539f\u6765\u7684\u6a21\u578b\u5417\uff1f<\/p>\n

\u56e2\u961f\u4f7f\u7528\u7559\u51fa\u6587\u672c\u4e0a\u7684\u4ea4\u53c9\u71b5\u5dee\u503c\uff08CE delta\uff09\u8861\u91cf\u66ff\u6362\u4fdd\u771f\u5ea6\uff0c\u5e76\u4f7f\u7528KL\u6563\u5ea6\u548c\u66ff\u6362\u4f4d\u7f6e\u7684\u6fc0\u6d3b\u91cd\u6784\u8bef\u5dee\u8fdb\u884c\u8865\u5145\u9a8c\u8bc1\u3002CE delta\u8d8a\u63a5\u8fd10\uff0c\u8bf4\u660e\u66ff\u6362\u540e\u7684\u6a21\u578b\u884c\u4e3a\u8d8a\u63a5\u8fd1\u539f\u6a21\u578b\u3002<\/p>\n

\u5728GPT-2 Small\u7b2c8\u5c42mlp.c_proj\u7684\u5355\u77e9\u9635\u5b9e\u9a8c\u4e2d\uff0cSWD\u4ec5\u4f7f\u7528\u6570\u5343\u4e2a\u6821\u51c6token\u5c31\u8fdb\u5165\u4f4eCE\u8bef\u5dee\u533a\u95f4\uff1bTranscoder\u548cVPD-Recon-CI\u7b49\u8bad\u7ec3\u578b\u57fa\u7ebf\u5219\u9700\u8981\u7ea610\u2076\u91cf\u7ea7\u7684optimizer-replay token\u624d\u80fd\u63a5\u8fd1\u8fd9\u4e00\u66ff\u6362\u8d28\u91cf\u3002\u540c\u6837\u7684\u8d8b\u52bf\u968f\u540e\u51fa\u73b0\u5728Qwen2.5-0.5B\u30011.5B\u30013B\u548cQwen3.5-27B\u4e0a\u3002<\/p>\n

\u7efc\u5408\u8bba\u6587\u4e2d\u7684\u5355\u77e9\u9635\u6bd4\u8f83\uff0c\u5728\u8fbe\u5230\u5339\u914d\u66ff\u6362\u4fdd\u771f\u5ea6\u65f6\uff0cSWD\u4f7f\u7528\u7684\u6570\u636e\u4e0d\u5230\u8bad\u7ec3\u578b\u66ff\u4ee3\u8868\u793a\u76841%\u3002\u8fd9\u610f\u5473\u7740\uff0c\u5927\u91cf\u6570\u636e\u548c\u957f\u65f6\u95f4\u66ff\u4ee3\u6a21\u5757\u8bad\u7ec3\u5e76\u4e0d\u662f\u83b7\u5f97\u9ad8\u4fdd\u771f\u56de\u8def\u5355\u5143\u7684\u5fc5\u8981\u524d\u63d0\u3002\u76f4\u63a5\u4ece\u9884\u8bad\u7ec3\u6743\u91cd\u51fa\u53d1\uff0c\u4e5f\u53ef\u4ee5\u6784\u9020\u8db3\u591f\u5fe0\u5b9e\u7684\u5e72\u9884\u8868\u9762\u3002<\/p>\n

\u25b3GPT-2 Small\u5355\u77e9\u9635\u66ff\u6362\u7684CE delta\u968f\u6570\u636e\u91cf\u53d8\u5316\u3002SWD\u4f7f\u7528\u5c11\u91cf\u6821\u51c6\u6570\u636e\u5373\u53ef\u8fdb\u5165\u4f4e\u8bef\u5dee\u533a\u57df\u3002<\/p>\n

\u25b3Qwen2.5-3B\u4e0eQwen3.5-27B\u7684\u5355\u77e9\u9635\u66ff\u6362\u7ed3\u679c\u3002\u6a2a\u8f74\u4e3a\u6784\u9020\u66ff\u6362\u8868\u793a\u6240\u4f7f\u7528\u7684token\u6570\uff0c\u7eb5\u8f74\u4e3a\u76f8\u5bf9\u7a20\u5bc6\u6a21\u578b\u7684CE delta\u3002<\/p>\n

\u9ad8\u4fdd\u771f\u5730\u590d\u73b0\u539f\u77e9\u9635\uff0c\u53ea\u80fd\u8bf4\u660e\u6240\u6709\u74f6\u9888\u5355\u5143\u5408\u5728\u4e00\u8d77\u80fd\u591f\u5de5\u4f5c\u3002\u771f\u6b63\u7684\u56de\u8def\u8fd8\u5fc5\u987b\u6ee1\u8db3\u4e24\u4e2a\u66f4\u4e25\u683c\u7684\u6761\u4ef6\uff1a\u53ea\u4fdd\u7559\u5c11\u91cf\u9009\u4e2d\u5355\u5143\u65f6\uff0c\u4efb\u52a1\u884c\u4e3a\u4ecd\u7136\u5b58\u5728\uff1b\u53ea\u79fb\u9664\u8fd9\u4e9b\u5355\u5143\u65f6\uff0c\u4efb\u52a1\u8868\u73b0\u4f1a\u660e\u663e\u4e0b\u964d\u3002\u524d\u8005\u662f\u5145\u5206\u6027\u6d4b\u8bd5\uff0c\u540e\u8005\u662f\u5fc5\u8981\u6027\u6d4b\u8bd5\u3002<\/p>\n

\u56e2\u961f\u5148\u5728\u72ec\u7acb\u8bad\u7ec3\u5212\u5206\u4e0a\u4f7f\u7528\u4e00\u9636\u4efb\u52a1\u5f52\u56e0\u5bf9\u5019\u9009\u5355\u5143\u6392\u5e8f\uff0c\u518d\u6784\u9020\u4ecetop-1\u3001top-2\u5230top-k\u7684\u5d4c\u5957\u56de\u8def\uff0c\u5e76\u5728\u7559\u51fa\u6d4b\u8bd5\u96c6\u4e0a\u8bc4\u4f30\u3002\u56de\u8def\u6210\u672c\u540c\u65f6\u4f7f\u7528\u4e24\u79cd\u53e3\u5f84\u8861\u91cf\uff1a\u9009\u4e2d\u4e86\u591a\u5c11\u74f6\u9888\u5355\u5143\uff0c\u4ee5\u53ca\u8fd9\u4e9b\u5355\u5143\u5b9e\u9645\u5305\u542b\u591a\u5c11\u975e\u96f6\u8bfb\u5199\u8fde\u63a5\u3002<\/p>\n

\u5728GPT-2 Small\u7684GreaterThan\u3001IOI\u3001Docstring\u548cGendered Pronoun\u56db\u9879\u4efb\u52a1\u4e0a\uff0cSWD\u8fbe\u5230\u76f8\u540c\u5145\u5206\u6027\u6216\u5fc5\u8981\u6027\u8981\u6c42\u65f6\uff0c\u901a\u5e38\u9700\u8981\u6bd4Transcoder\u548cVPD-Recon-CI\u66f4\u5c11\u7684\u5355\u5143\u548c\u6d3b\u8dc3\u8fde\u63a5\u3002<\/p>\n

\u628a\u5e73\u5747\u6fc0\u6d3b\u6d88\u878d\u66ff\u6362\u4e3a\u96f6\u6d88\u878d\u4e4b\u540e\uff0c\u8fd9\u4e00\u4f18\u52bf\u4f9d\u7136\u4fdd\u6301\u3002<\/p>\n

\u8fd9\u4e00\u7ed3\u679c\u4e5f\u6269\u5c55\u5230\u4e86Qwen2.5\u548cQwen3.5-27B\u3002<\/p>\n

\u6362\u53e5\u8bdd\u8bf4\uff0cSWD\u5f97\u5230\u7684\u4e0d\u53ea\u662f\u4e00\u79cd\u4f4e\u8bef\u5dee\u77e9\u9635\u8fd1\u4f3c\uff0c\u800c\u662f\u4e00\u7ec4\u771f\u6b63\u80fd\u591f\u63a5\u53d7\u56e0\u679c\u68c0\u9a8c\u7684\u4efb\u52a1\u56de\u8def\u5355\u5143\u3002<\/p>\n

\u25b3GPT-2 Small\u7684\u4efb\u52a1\u56de\u8def\u7ed3\u679c\u3002\u66f2\u7ebf\u8d8a\u4f4e\uff0c\u8868\u793a\u8fbe\u5230\u76f8\u540c\u5145\u5206\u6027\u6216\u5fc5\u8981\u6027\u8981\u6c42\u6240\u9700\u7684\u6d3b\u8dc3\u8fde\u63a5\u8d8a\u5c11\u3002<\/p>\n

\u25b3Qwen3.5-27B\u7684\u4efb\u52a1\u56de\u8def\u7ed3\u679c\u3002SWD\u5728\u5927\u6a21\u578b\u4e0a\u4ecd\u80fd\u4ee5\u8f83\u5c11\u6d3b\u8dc3\u8fde\u63a5\u8fbe\u5230\u76f8\u5e94\u7684\u56e0\u679c\u6d4b\u8bd5\u8981\u6c42\u3002<\/p>\n

SWD\u7684\u9a8c\u8bc1\u5e76\u672a\u505c\u7559\u5728GPT-2\u7684\u5355\u4e2a\u77e9\u9635\u4e0a\u3002<\/p>\n

\u5728\u6a21\u578b\u89c4\u6a21\u4e0a\uff0c\u56e2\u961f\u5c06\u76f8\u540c\u7684\u5355\u77e9\u9635\u66ff\u6362\u548c\u56de\u8def\u62bd\u53d6\u6d41\u7a0b\u6269\u5c55\u5230Qwen2.5-0.5B\u30011.5B\u30013B\uff0c\u6700\u7ec8\u8fdb\u4e00\u6b65\u9a8c\u8bc1\u81f3Qwen3.5-27B\u3002<\/p>\n

\u572827B\u6a21\u578b\u7684\u7b2c31\u5c42mlp.down_proj\u4e0a\uff0cSWD\u4f9d\u7136\u4ee5\u663e\u8457\u66f4\u5c11\u7684\u6570\u636e\u8fbe\u5230\u4f4eCE delta\uff0c\u5e76\u4ee5\u66f4\u5c11\u7684\u6d3b\u8dc3\u8fde\u63a5\u8fbe\u5230\u76f8\u5f53\u7684\u5145\u5206\u6027\u548c\u5fc5\u8981\u6027\u76ee\u6807\u3002<\/p>\n

\u5728\u66ff\u6362\u8303\u56f4\u4e0a\uff0c\u56e2\u961f\u8fdb\u4e00\u6b65\u628aGPT-2 Small 12\u4e2aTransformer block\u4e2d\u5168\u90e848\u4e2a\u6ce8\u610f\u529b\u548cMLP\u6743\u91cd\u77e9\u9635\u66ff\u6362\u4e3a\u7a00\u758f\u5206\u89e3\uff0c\u540c\u65f6\u4fdd\u7559embedding\u3001LayerNorm\u3001\u975e\u7ebf\u6027\u51fd\u6570\u548c\u8f93\u51fa\u5934\u3002<\/p>\n

\u7531\u4e8e\u5c40\u90e8\u8fd1\u4f3c\u8bef\u5dee\u4f1a\u8de8\u5c42\u7d2f\u79ef\uff0c\u56e2\u961f\u5c06SWD\u4f5c\u4e3a\u7a00\u758f\u521d\u59cb\u5316\uff0c\u56fa\u5b9a\u6240\u6709\u975e\u96f6\u4f4d\u7f6e\uff0c\u53ea\u5fae\u8c03\u5df2\u7ecf\u4fdd\u7559\u4e0b\u6765\u7684\u56e0\u5b50\u503c\u3002\u5f97\u5230\u7684SWD-FT\u5728\u8fde\u63a5\u6570\u91cf\u4e0d\u53d8\u7684\u60c5\u51b5\u4e0b\uff0c\u5c06\u6a21\u578bCE\u4ece3.90\u964d\u81f33.44\uff0c\u7565\u4f18\u4e8e\u76f8\u8fd1\u975e\u96f6\u53c2\u6570\u9884\u7b97\u4e0b\u7a00\u758f\u9884\u8bad\u7ec3\u57fa\u7ebf\u76843.45\u3002<\/p>\n

\u66f4\u503c\u5f97\u6ce8\u610f\u7684\u662f\uff0cSWD-FT\u603b\u8ba1\u4f7f\u7528\u7ea62,060\u4e07\u4e2atoken\uff0c\u800c\u7a00\u758f\u9884\u8bad\u7ec3\u57fa\u7ebf\u8fbe\u5230\u76f8\u8fd1CE\u4f7f\u7528\u4e8628.84\u4ebf\u4e2atoken\uff0c\u524d\u8005\u540c\u6837\u4e0d\u5230\u540e\u8005\u76841%\u3002\u8fd9\u4f7f\u5f97\u4ece\u73b0\u6709\u7a20\u5bc6checkpoint\u51fa\u53d1\u6784\u9020\u5168\u6a21\u578b\u7a00\u758f\u5e72\u9884\u8868\u9762\uff0c\u6210\u4e3a\u4e00\u6761\u6781\u5177\u5438\u5f15\u529b\u7684\u8def\u7ebf\u3002<\/p>\n

SWD\u8fd8\u63d0\u4f9b\u4e86\u4e00\u4e2a\u66f4\u5f7b\u5e95\u7684zero-data\u7248\u672c\u3002\u5728GPT-2 Small\u5355\u77e9\u9635\u5b9e\u9a8c\u4e2d\uff0c\u5b83\u5b8c\u5168\u4e0d\u4f7f\u7528\u6821\u51c6\u6587\u672c\uff0c\u76f4\u63a5\u6700\u5c0f\u5316\u539f\u6743\u91cd\u4e0e\u5206\u89e3\u6743\u91cd\u4e4b\u95f4\u7684Frobenius\u8bef\u5dee\u3002<\/p>\n

\u7ed3\u679c\u663e\u793a\uff0czero-data SWD\u5728\u6743\u91cd\u7a7a\u95f4\u4e2d\u66f4\u63a5\u8fd1\u539f\u77e9\u9635\uff1b\u4f7f\u7528\u6fc0\u6d3b\u6821\u51c6\u7684SWD\u5219\u5728\u9ad8\u7a00\u758f\u5ea6\u4e0b\u66f4\u80fd\u4fdd\u6301\u5178\u578b\u6587\u672c\u4e0a\u7684\u6a21\u578b\u884c\u4e3a\u3002<\/p>\n

\u5373\u4f7f\u5b8c\u5168\u4e0d\u4f7f\u7528\u6821\u51c6\u6fc0\u6d3b\uff0czero-data SWD\u5f97\u5230\u7684\u74f6\u9888\u5355\u5143\u4ecd\u7136\u80fd\u591f\u62bd\u53d6\u51fa\u6709\u6548\u4efb\u52a1\u56de\u8def\u3002\u8fd9\u4e3a\u9010checkpoint\u3001\u9010\u8bad\u7ec3\u9636\u6bb5\u8ffd\u8e2a\u5927\u6a21\u578b\u5185\u90e8\u7ed3\u6784\u63d0\u4f9b\u4e86\u65b0\u7684\u53ef\u80fd\u6027\u3002<\/p>\n

\u25b3GPT-2 Small\u5168\u6a21\u578b\u66ff\u6362\u3002\u56fa\u5b9a\u7a00\u758f\u7ed3\u6784\u5e76\u5fae\u8c03\u4fdd\u7559\u7684\u975e\u96f6\u503c\u540e\uff0c\u6a21\u578bCE\u4ece3.90\u964d\u81f33.44\uff0c\u540c\u65f6\u4fdd\u6301\u6d3b\u8dc3\u8fde\u63a5\u6570\u91cf\u4e0d\u53d8\u3002<\/p>\n

\u25b3Zero-data SWD\u3002Zero-data SWD\u5728\u6743\u91cd\u7a7a\u95f4\u4e2d\u66f4\u63a5\u8fd1\u539f\u77e9\u9635\uff1bactivation-calibrated SWD\u5728\u9ad8\u7a00\u758f\u5ea6\u4e0b\u66f4\u80fd\u4fdd\u6301\u5178\u578b\u6587\u672c\u4e0a\u7684\u6a21\u578b\u884c\u4e3a\u3002<\/p>\n

\u56de\u8def\u66f2\u7ebf\u8bc1\u660e\u4e86\u8fd9\u4e9b\u5355\u5143\u5728\u56e0\u679c\u6d4b\u8bd5\u4e2d\u6709\u6548\uff0c\u4f46\u673a\u5236\u53ef\u89e3\u91ca\u6027\u8fd8\u5173\u5fc3\u53e6\u4e00\u4e2a\u95ee\u9898\uff1a\u8fd9\u4e9b\u5355\u5143\u80fd\u5426\u5448\u73b0\u51fa\u53ef\u7406\u89e3\u7684\u6a21\u5f0f\uff1f<\/p>\n

\u56e2\u961f\u5728GreaterThan\u4efb\u52a1\u4e0a\uff0c\u5bf9GPT-2 Small\u5168\u90e89,208\u4e2a\u5019\u9009mlp.c_proj\u74f6\u9888\u5355\u5143\u8fdb\u884c\u5f52\u56e0\u6392\u5e8f\uff0c\u5e76\u4ece\u7b2c6\u30018\u300110\u5c42\u5c55\u793a\u516d\u4e2a\u9ad8\u6392\u540d\u5355\u5143\u3002<\/p>\n

\u968f\u540e\uff0c\u4ed6\u4eec\u5728\u72ec\u7acb\u7684WikiText-2\u6587\u672c\u4e0a\u6536\u96c6\u6bcf\u4e2a\u5355\u5143\u7684\u9ad8\u6fc0\u6d3b\u4e0a\u4e0b\u6587\uff0c\u5e76\u7531GPT-5.5\u603b\u7ed3\u91cd\u590d\u51fa\u73b0\u7684\u8bed\u4e49\u6a21\u5f0f\u3002<\/p>\n

\u516d\u4e2a\u5355\u5143\u4e2d\uff0c\u6709\u56db\u4e2a\u96c6\u4e2d\u54cd\u5e94\u6570\u5b57\u3001\u5e74\u4efd\u3001\u6570\u91cf\u6216\u5ea6\u91cf\u4fe1\u606f\uff0c\u53e6\u5916\u4e24\u4e2a\u66f4\u591a\u5bf9\u5e94\u6807\u70b9\u3001\u53e5\u6cd5\u548c\u547d\u540d\u5b9e\u4f53\u3002<\/p>\n

\u8fd9\u4e9b\u8bed\u4e49\u6a21\u5f0f\u5e76\u672a\u53c2\u4e0e\u5355\u5143\u9009\u62e9\uff0c\u5374\u4e0eGreaterThan\u6240\u9700\u7684\u6570\u503c\u6bd4\u8f83\u80fd\u529b\u5f62\u6210\u4e86\u660e\u663e\u547c\u5e94\u3002<\/p>\n

\u56e2\u961f\u8fd8\u8fdb\u884c\u4e86\u4e00\u4e2a\u72ec\u7acb\u7684\u5b9a\u5411\u7f16\u8f91\u5b9e\u9a8c\u3002\u4ed6\u4eec\u7b5b\u9009\u51fa\u74f6\u9888\u5355\u5143c205\uff0c\u5e76\u5c06\u8be5\u5355\u5143\u8bfb\u65b9\u5411\u8bf1\u5bfc\u7684rank-one\u66f4\u65b0\u65bd\u52a0\u5230\u539f\u59cb\u7a20\u5bc6GPT-2\u6743\u91cd\u4e0a\u3002<\/p>\n

\u5728\u63d0\u793a\u8bcdThe opposite of up is\u4e2d\uff0c\u6b63\u786e\u7b54\u6848down\u76f8\u5bf9\u5e72\u6270\u7b54\u6848left\u7684logit margin\u63d0\u9ad8\u4e860.216\uff1b\u5728\u4e03\u6761\u65e0\u5173\u4e8b\u5b9e\u63d0\u793a\u4e0a\uff0c\u5e73\u5747\u672btoken KL\u4ec5\u4e3a4.02\u00d710\u207b\u2075\u3002<\/p>\n

\u5728\u76f8\u8fd1\u7684\u6b63\u5411\u76ee\u6807\u53d8\u5316\u4e0b\uff0c\u8fd9\u4e2a\u5355\u5355\u5143\u65b9\u5411\u6d4b\u5f97\u7684\u526f\u4f5c\u7528\u4f4e\u4e8e\u968f\u673a\u5355\u5143\u548crank-4 LoRA\u5bf9\u7167\u3002<\/p>\n

\u4e00\u4e2a\u4ece\u6743\u91cd\u5206\u89e3\u4e2d\u5f97\u5230\u7684\u74f6\u9888\u65b9\u5411\uff0c\u56e0\u6b64\u4e0d\u4ec5\u53ef\u4ee5\u88ab\u89c2\u5bdf\u548c\u6d88\u878d\uff0c\u8fd8\u80fd\u591f\u6210\u4e3a\u7cbe\u786e\u64cd\u63a7\u6a21\u578b\u884c\u4e3a\u7684\u7f16\u8f91\u624b\u67c4\u3002<\/p>\n

\u25b3GreaterThan\u56de\u8def\u7684\u8bed\u4e49\u5ba1\u8ba1\u3002\u516d\u4e2a\u9ad8\u5f52\u56e0\u74f6\u9888\u5355\u5143\u4e2d\uff0c\u56db\u4e2a\u4e0e\u6570\u5b57\u3001\u6570\u91cf\u6216\u5ea6\u91cf\u6a21\u5f0f\u76f8\u5173\uff1b\u8bed\u4e49\u5047\u8bbe\u6765\u81ea\u72ec\u7acb\u6587\u672c\u4e2d\u7684\u9ad8\u6fc0\u6d3b\u4e0a\u4e0b\u6587\u3002<\/p>\n

\u25b3\u5355\u4e2aSWD\u65b9\u5411\u7684\u5b9a\u5411\u7f16\u8f91\u3002\u7eb5\u8f74\u4e3a\u76ee\u6807\u7b54\u6848\u76f8\u5bf9\u5e72\u6270\u7b54\u6848\u7684logit margin\u53d8\u5316\uff0c\u6a2a\u8f74\u4e3a\u65e0\u5173\u63d0\u793a\u4e0a\u7684\u5e73\u5747\u672btoken KL\u3002<\/p>\n

\u8fc7\u53bb\uff0c\u673a\u5236\u53ef\u89e3\u91ca\u6027\u5f80\u5f80\u9700\u8981\u5148\u5b66\u4e60\u4e00\u5957\u65b0\u7684\u7279\u5f81\u5b57\u5178\u6216\u66ff\u4ee3\u6a21\u5757\uff0c\u518d\u5bf9\u8fd9\u4e9b\u65b0\u5355\u5143\u8fdb\u884c\u5f52\u56e0\u548c\u5e72\u9884\u3002SWD\u5c55\u793a\u4e86\u53e6\u4e00\u79cd\u53ef\u80fd\uff1a\u9884\u8bad\u7ec3\u6743\u91cd\u672c\u8eab\u5c31\u53ef\u4ee5\u88ab\u91cd\u65b0\u7ec4\u7ec7\u6210\u7a00\u758f\u3001\u53ef\u5bfb\u5740\u3001\u53ef\u56e0\u679c\u68c0\u9a8c\u7684\u8ba1\u7b97\u8def\u5f84\u3002<\/p>\n

\u4ece\u4e0d\u52301%\u7684\u6570\u636e\u6210\u672c\uff0c\u5230\u66f4\u5c11\u7684\u74f6\u9888\u5355\u5143\u548c\u6d3b\u8dc3\u8fde\u63a5\uff1b\u4eceGPT-2\u3001Qwen2.5\u5230Qwen3.5-27B\uff1b\u4ece\u5355\u77e9\u9635\u3001\u6574\u4e2aTransformer\u4e3b\u5e72\u5230\u5b8c\u5168\u4e0d\u4f9d\u8d56\u6821\u51c6\u6587\u672c\u7684zero-data\u5206\u89e3\uff0cSWD\u6b63\u5728\u628a\u6743\u91cd\u4fa7\u673a\u5236\u53ef\u89e3\u91ca\u6027\u53d8\u6210\u4e00\u6761\u66f4\u8f7b\u91cf\u3001\u4e5f\u66f4\u5bb9\u6613\u6269\u5c55\u7684\u6280\u672f\u8def\u7ebf\u3002<\/p>\n

\u66f4\u91cd\u8981\u7684\u662f\uff0c\u8fd9\u4e9b\u7a00\u758f\u8def\u5f84\u4e0d\u53ea\u5b58\u5728\u4e8e\u6570\u503c\u66f2\u7ebf\u4e2d\uff1a\u5b83\u4eec\u80fd\u591f\u54cd\u5e94\u5177\u4f53\u8bed\u4e49\u6a21\u5f0f\u3001\u901a\u8fc7\u5145\u5206\u6027\u548c\u5fc5\u8981\u6027\u6d4b\u8bd5\uff0c\u5e76\u88ab\u7528\u4e8e\u5b9a\u5411\u6539\u53d8\u6a21\u578b\u884c\u4e3a\u3002<\/p>\n

\u968f\u7740\u6a21\u578b\u89c4\u6a21\u4e0d\u65ad\u589e\u957f\uff0c\u76f4\u63a5\u4ece\u5df2\u6709checkpoint\u4e2d\u62bd\u53d6\u548c\u8ffd\u8e2a\u56de\u8def\uff0c\u6216\u8bb8\u5c06\u6210\u4e3a\u7406\u89e3\u5927\u6a21\u578b\u5185\u90e8\u8ba1\u7b97\u7684\u4e00\u6761\u91cd\u8981\u8def\u5f84\u3002<\/p>\n

\u8bba\u6587\u4fe1\u606f<\/p>\n

\n

\u7248\u6743\u58f0\u660e\uff1a<\/strong><\/p>\n

\u672c\u535a\u5ba2\u90e8\u5206\u5185\u5bb9\u4e3a\u8f6c\u8f7d\u6587\u7ae0\uff0c\u65e8\u5728\u5206\u4eab\u6709\u4ef7\u503c\u7684\u4fe1\u606f\uff0c\u7248\u6743\u5f52\u539f\u4f5c\u8005\u6240\u6709\u3002<\/p>\n

\u8f6c\u8f7d\u4ec5\u4e3a\u4e2a\u4eba\u5b66\u4e60\u4e0e\u4ea4\u6d41\u76ee\u7684\uff0c\u4e0d\u5bf9\u6587\u7ae0\u89c2\u70b9\u8d1f\u8d23\uff0c\u4ea6\u4e0d\u7528\u4e8e\u4efb\u4f55\u5546\u4e1a\u7528\u9014\u3002<\/p>\n

\u5982\u6d89\u53ca\u7248\u6743\u95ee\u9898\uff0c\u8bf7\u8054\u7cfb\u672c\u4eba\u5220\u9664\u3002<\/p>\n<\/blockquote>\n","protected":false},"excerpt":{"rendered":"

\u5141\u4e2d \u53d1\u81ea \u51f9\u975e\u5bfa<\/p>\n

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\u4e3a\u4e86\u7406\u89e3\u4e00\u4e2a\u5df2\u7ecf\u8bad\u7ec3\u597d\u7684\u6a21\u578b\uff0c\u7814\u7a76\u8005\u5f80\u5f80\u9700\u8981\u5148\u8bad\u7ec3\u4e00\u5957\u65b0\u7684\u7a00\u758f\u8868\u793a\u3002<\/p>\n

Transcoder\u3001\u7a00\u758f\u7279\u5f81\u6a21\u5757\u7b49\u65b9\u6cd5\u4f1a\u5b66\u4e60\u4e00\u7ec4\u65b0\u7684\u5185\u90e8\u5355\u5143\uff0c\u7528\u5b83\u4eec\u8fd1\u4f3c\u539f\u6a21\u578b\u67d0\u4e00\u5c42\u6216\u67d0\u4e2a\u6a21\u5757\u7684\u8ba1\u7b97\uff0c\u518d\u901a\u8fc7\u4fdd\u7559\u3001\u79fb\u9664\u8fd9\u4e9b\u5355\u5143\u6765\u5bfb\u627e\u4efb\u52a1\u56de\u8def\u3002<\/p>\n

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