{"id":6846,"date":"2026-02-13T10:35:14","date_gmt":"2026-02-13T02:35:14","guid":{"rendered":"https:\/\/nullthought.net\/?p=6846"},"modified":"2026-03-02T17:19:17","modified_gmt":"2026-03-02T09:19:17","slug":"%e8%ae%a9%e5%a4%a7%e6%a8%a1%e5%9e%8b%e5%bf%98%e6%8e%89%e9%83%a8%e5%88%86%e5%86%85%e5%ae%b9","status":"publish","type":"post","link":"https:\/\/nullthought.net\/?p=6846","title":{"rendered":"\u8ba9\u5927\u6a21\u578b\u5fd8\u6389\u90e8\u5206\u5185\u5bb9"},"content":{"rendered":"\n<p>\u8bba\u6587<strong><a href=\"https:\/\/www.arxiv.org\/abs\/2310.02238\" target=\"_blank\" rel=\"noreferrer noopener\">Who&#8217;s Harry Potter? Approximate Unlearning in LLMs<\/a><\/strong>\u60f3\u89e3\u51b3\u4e00\u4e2a\u5f88\u73b0\u5b9e\u7684\u95ee\u9898\uff1a\u5927\u8bed\u8a00\u6a21\u578b\u662f\u5728\u6d77\u91cf\u4e92\u8054\u7f51\u6587\u672c\u4e0a\u8bad\u7ec3\u51fa\u6765\u7684\uff0c\u5176\u4e2d\u53ef\u80fd\u5939\u6742\u4e86<strong>\u7248\u6743\u5185\u5bb9\u3001\u4e2a\u4eba\u9690\u79c1\u3001\u9519\u8bef\u4fe1\u606f\u6216\u6709\u5bb3\u5185\u5bb9<\/strong>\u3002\u6a21\u578b\u4e00\u65e6\u8bad\u7ec3\u5b8c\uff0c\u5c31\u50cf\u201c\u5403\u8fdb\u53bb\u4e86\u201d\uff0c\u60f3\u8ba9\u5b83<strong>\u53ea\u5fd8\u6389\u5176\u4e2d\u67d0\u4e00\u5c0f\u90e8\u5206<\/strong>\uff08\u6bd4\u5982\u67d0\u4e00\u5957\u5c0f\u8bf4\uff09\uff0c\u4f20\u7edf\u529e\u6cd5\u5f80\u5f80\u53ea\u80fd\u201c\u56de\u7089\u91cd\u7ec3\u201d\u2014\u2014\u4ee3\u4ef7\u592a\u9ad8\uff0c\u6240\u4ee5\u4f5c\u8005\u63d0\u51fa\u4e00\u79cd\u66f4\u5feb\u7684\u201c\u8fd1\u4f3c\u9057\u5fd8\uff08approximate unlearning\uff09\u201d\u65b9\u6cd5\u3002<\/p>\n\n\n\n<p>\u4f5c\u8005\uff08Ronen Eldan\u3001Mark Russinovich\uff0c\u6765\u81ea Microsoft Research \/ Microsoft Azure\uff09\u7528\u4e00\u4e2a\u5f88\u201c\u6781\u7aef\u4f46\u76f4\u89c2\u201d\u7684\u5b9e\u9a8c\u6765\u8bc1\u660e\u65b9\u6cd5\u6709\u6548\uff1a\u8ba9Meta\u5f00\u6e90\u7684 Llama2-7b <strong>\u201c\u5fd8\u6389\u201d\u300aHarry Potter series\u300b<\/strong>\u3002\u8bba\u6587\u58f0\u79f0\uff1a\u539f\u6a21\u578b\u9884\u8bad\u7ec3\u6d88\u8017\u5de8\u5927\uff08\u6570\u91cf\u7ea7\u662f\u5341\u51e0\u4e07 GPU \u5c0f\u65f6\uff09\uff0c\u800c\u4ed6\u4eec\u53ea\u7528\u5927\u7ea6 <strong>1 \u4e2a GPU \u5c0f\u65f6\u5de6\u53f3\u7684\u5fae\u8c03<\/strong>\uff0c\u5c31\u80fd\u663e\u8457\u62b9\u6389\u6a21\u578b\u751f\u6210\/\u56de\u5fc6\u8be5\u7cfb\u5217\u7ec6\u8282\u7684\u80fd\u529b\uff0c\u540c\u65f6\u5e38\u89c1\u57fa\u51c6\u6d4b\u8bd5\u8868\u73b0\u51e0\u4e4e\u4e0d\u53d7\u5f71\u54cd\u3002<\/p>\n\n\n\n<p>\u4e3a\u4ec0\u4e48\u201c\u8ba9\u6a21\u578b\u5fd8\u8bb0\u201d\u4e0d\u7b80\u5355\uff1f\u4e00\u4e2a\u5929\u771f\u7684\u60f3\u6cd5\u662f\uff1a\u628a\u76ee\u6807\u6587\u672c\u62ff\u6765\u8bad\u7ec3\uff0c\u4f46\u628a\u635f\u5931\u51fd\u6570\u201c\u53d6\u53cd\u201d\uff0c\u7b49\u4e8e\u201c\u5b66\u4f1a\u5c31\u60e9\u7f5a\u201d\u3002\u4f5c\u8005\u53d1\u73b0\u8fd9\u5728\u4ed6\u4eec\u7684\u573a\u666f\u91cc\u6548\u679c\u4e0d\u597d\uff0c\u56e0\u4e3a\u5b83\u53ef\u80fd\u8ba9\u6a21\u578b\u5b66\u574f\u7684\u662f<strong>\u901a\u7528\u8bed\u8a00\u80fd\u529b<\/strong>\u800c\u4e0d\u662f\u76ee\u6807\u77e5\u8bc6\u672c\u8eab\uff1a\u4f8b\u5982\u53e5\u5b50\u662f\u201c\u2026\u2026\u6211\u53eb__\u201d\uff0c\u4f60\u5f3a\u884c\u8ba9\u5b83\u4e0d\u8981\u8f93\u51fa\u67d0\u4e2a\u540d\u5b57\uff0c\u53ef\u80fd\u4f1a\u628a\u201c\u6211\u53eb\u2026\u2026\u201d\u8fd9\u7c7b\u8868\u8fbe\u6574\u4f53\u641e\u4e71\u3002<\/p>\n\n\n\n<p>\u4ed6\u4eec\u7684\u6838\u5fc3\u601d\u8def\u53ef\u4ee5\u7528\u4e00\u53e5\u5927\u767d\u8bdd\u6982\u62ec\uff1a<strong>\u522b\u76f4\u63a5\u8ba9\u6a21\u578b\u201c\u5fd8\u201d\uff0c\u800c\u662f\u6559\u5b83\u5728\u770b\u5230\u540c\u6837\u4e0a\u4e0b\u6587\u65f6\uff0c\u53bb\u8f93\u51fa\u4e00\u5957\u201c\u66f4\u666e\u901a\u3001\u66f4\u6cdb\u5316\u201d\u7684\u7eed\u5199<\/strong>\u2014\u2014\u5c31\u50cf\u628a\u201c\u7279\u5b9a\u5c0f\u8bf4\u4e16\u754c\u89c2\u7684\u7eed\u5199\u4e60\u60ef\u201d\u66ff\u6362\u6210\u201c\u666e\u901a\u6545\u4e8b\u7684\u7eed\u5199\u4e60\u60ef\u201d\u3002\u4e3a\u6b64\uff0c\u4f5c\u8005\u8981\u6784\u9020\u4e00\u79cd\u201c\u66ff\u4ee3\u7b54\u6848\u201d\uff08\u8bba\u6587\u53eb <em>generic predictions<\/em>\uff09\uff1a\u5b83\u8fd1\u4f3c\u4e8e\u201c\u5982\u679c\u6a21\u578b\u4ece\u6765\u6ca1\u8bfb\u8fc7\u8fd9\u5957\u5c0f\u8bf4\uff0c\u5b83\u6b64\u523b\u66f4\u53ef\u80fd\u600e\u4e48\u63a5\u4e0b\u53bb\u201d\u3002<\/p>\n\n\n\n<p>\u65b9\u6cd5\u7531\u4e09\u5757\u62fc\u8d77\u6765\uff1a<\/p>\n\n\n\n<p><strong>1\uff09\u5148\u505a\u4e00\u4e2a\u201c\u66f4\u61c2\u76ee\u6807\u6587\u672c\u7684\u5f3a\u5316\u7248\u6a21\u578b\u201d\uff0c\u7528\u5b83\u6765\u5b9a\u4f4d\u54ea\u4e9b\u8bcd\u662f\u2018\u76ee\u6807\u77e5\u8bc6\u9a71\u52a8\u7684\u2019<\/strong><br>\u4f5c\u8005\u5148\u62ff\u57fa\u5ea7\u6a21\u578b\u518d\u7528\u76ee\u6807\u6587\u672c\u8bad\u7ec3\u4e00\u5c0f\u4f1a\u513f\uff0c\u5f97\u5230\u4e00\u4e2a <em>reinforced model<\/em>\u3002\u5b83\u56e0\u4e3a\u201c\u66f4\u719f\u90a3\u5957\u6587\u672c\u201d\uff0c\u5728\u5f88\u591a\u4f4d\u7f6e\u4f1a\u5bf9\u201c\u76ee\u6807\u76f8\u5173\u7684\u4e0b\u4e00\u4e2a\u8bcd\u201d\u6253\u51fa\u66f4\u9ad8\u5206\u3002\u63a5\u7740\u628a\u201c\u5f3a\u5316\u7248\u6a21\u578b\u7684\u6253\u5206\u201d\u4e0e\u201c\u57fa\u5ea7\u6a21\u578b\u5728\u66f4\u6cdb\u5316\u7248\u672c\u6587\u672c\u4e0a\u7684\u6253\u5206\u201d\u5bf9\u6bd4\uff0c\u627e\u51fa\u90a3\u4e9b\u201c\u660e\u663e\u88ab\u76ee\u6807\u77e5\u8bc6\u63a8\u9ad8\u201d\u7684\u90e8\u5206\uff0c\u518d\u628a\u8fd9\u90e8\u5206\u4ece\u8bad\u7ec3\u6807\u7b7e\u91cc\u6263\u6389\uff08\u8bba\u6587\u91cc\u7528 ReLU + \u7cfb\u6570 \u03b1 \u505a\u622a\u65ad\u4e0e\u7f29\u653e\uff0c\u907f\u514d\u628a\u4e0d\u8be5\u6263\u7684\u4e5f\u6263\u6389\uff09\u3002<\/p>\n\n\n\n<p><strong>2\uff09\u628a\u5c0f\u8bf4\u91cc\u5f88\u201c\u72ec\u6709\u201d\u7684\u8bcd\u66ff\u6362\u6210\u201c\u901a\u7528\u66ff\u8eab\u8bcd\u201d\uff0c\u751f\u6210\u4e00\u4efd\u201c\u6cdb\u5316\u7248\u6587\u672c\u201d<\/strong><br>\u4ec5\u9760\u7b2c 1 \u6b65\u6709\u65f6\u8fd8\u4e0d\u591f\uff1a\u6709\u4e9b\u4f4d\u7f6e\u57fa\u5ea7\u6a21\u578b\u672c\u6765\u5c31\u5df2\u7ecf\u5f88\u504f\u5411\u5c0f\u8bf4\u4e13\u6709\u8bcd\u4e86\uff0c\u201c\u5f3a\u5316\u7248\u201d\u518d\u5f3a\u5316\u4e5f\u672a\u5fc5\u62c9\u5f00\u5dee\u8ddd\u3002\u4e8e\u662f\u4f5c\u8005\u5f15\u5165 <em>anchored terms<\/em>\uff08\u951a\u5b9a\u8bcd\uff09\u5b57\u5178\uff1a\u628a\u5c0f\u8bf4\u91cc\u9ad8\u5ea6\u4e13\u6709\u7684\u540d\u5b57\u3001\u5492\u8bed\u3001\u5730\u70b9\u3001\u53e3\u53f7\u7b49\uff0c\u66ff\u6362\u6210\u4e0d\u90a3\u4e48\u4e13\u5c5e\u4f46\u8bed\u4e49\u4e0a\u8fd8\u80fd\u81ea\u6d3d\u7684\u201c\u901a\u7528\u8bf4\u6cd5\u201d\u3002\u8fd9\u4efd\u5b57\u5178\u662f\u901a\u8fc7\u8ba9 GPT-4 \u505a\u5b9e\u4f53\/\u77ed\u8bed\u62bd\u53d6\u5e76\u7ed9\u51fa\u66ff\u6362\u800c\u6765\uff0c\u6700\u7ec8\u62fc\u51fa\u4e86\u5927\u7ea6 <strong>1500 \u4e2a\u951a\u5b9a\u8bcd\u53ca\u5176\u901a\u7528\u66ff\u6362<\/strong>\uff08\u8bba\u6587\u8fd8\u7ed9\u4e86\u793a\u4f8b\uff0c\u5982\u628a\u67d0\u4e9b\u4e13\u6709\u5730\u70b9\/\u9053\u5177\u540d\u66ff\u6362\u6210\u201c\u795e\u79d8\u5b66\u9662\/\u63a2\u9669\u5730\u56fe\u201d\u4e4b\u7c7b\uff09\u3002<\/p>\n\n\n\n<p><strong>3\uff09\u7528\u201c\u539f\u6587\u5f53\u8f93\u5165\u3001\u6cdb\u5316\u6807\u7b7e\u5f53\u7b54\u6848\u201d\uff0c\u5bf9\u57fa\u5ea7\u6a21\u578b\u505a\u5f88\u77ed\u7684\u5fae\u8c03<\/strong><br>\u8bad\u7ec3\u6570\u636e\u7684\u5236\u4f5c\u6d41\u7a0b\u5927\u81f4\u662f\uff1a\u628a\u76ee\u6807\u6587\u672c\u6309\u5757\u5207\u5f00\uff08\u5982 512 token \u4e00\u5757\uff09\uff0c\u5bf9\u6bcf\u5757\u5148\u505a\u951a\u5b9a\u8bcd\u66ff\u6362\u5f97\u5230\u201c\u7ffb\u8bd1\u5757\u201d\uff0c\u8ba9\u57fa\u5ea7\u6a21\u578b\u5bf9\u7ffb\u8bd1\u5757\u505a\u4e00\u6b21\u524d\u5411\u5f97\u5230\u201c\u6cdb\u5316\u503e\u5411\u7684\u9884\u6d4b\u201d\uff1b\u518d\u8ba9\u5f3a\u5316\u6a21\u578b\u5bf9\u539f\u5757\u524d\u5411\u5f97\u5230\u201c\u76ee\u6807\u77e5\u8bc6\u503e\u5411\u7684\u9884\u6d4b\u201d\uff1b\u4e8c\u8005\u5dee\u5206\u5f97\u5230\u201c\u76ee\u6807\u77e5\u8bc6\u63a8\u9ad8\u7684\u90e8\u5206\u201d\uff0c\u518d\u4ece\u6cdb\u5316\u9884\u6d4b\u4e2d\u6263\u6389\uff0c\u5f62\u6210\u6700\u7ec8\u8bad\u7ec3\u6807\u7b7e\uff1b\u6700\u540e\u62ff\u201c\u539f\u5757\u6587\u672c\u201d\u4f5c\u4e3a\u8f93\u5165\uff0c\u903c\u6a21\u578b\u53bb\u9884\u6d4b\u8fd9\u4e9b\u201c\u6cdb\u5316\u6807\u7b7e\u201d\u3002\u4f5c\u8005\u8bf4\u5728\u4ed6\u4eec\u8bbe\u7f6e\u91cc\u5927\u6982 <strong>~150 \u6b21\u68af\u5ea6\u6b65<\/strong>\u5c31\u591f\u770b\u5230\u660e\u663e\u9057\u5fd8\u6548\u679c\u3002<br>\u53e6\u5916\u4ed6\u4eec\u4e5f\u63d0\u5230\u4e00\u4e9b\u5de5\u7a0b\u7ec6\u8282\u5751\uff0c\u6bd4\u5982\u66ff\u6362\u4f1a\u5bfc\u81f4 token \u6570\u4e0d\u540c\u3001\u540c\u4e00\u951a\u5b9a\u8bcd\u5728\u540c\u4e00\u6bb5\u91cc\u53cd\u590d\u51fa\u73b0\u4f1a\u5e26\u6765\u524d\u540e\u4e0d\u4e00\u81f4\u7b49\uff0c\u9700\u8981\u505a\u6620\u5c04\u548c\u53bb\u91cd\/\u964d\u6743\u5904\u7406\u3002<\/p>\n\n\n\n<p>\u6548\u679c\u5982\u4f55\uff1f\u8bba\u6587\u7528\u4e24\u79cd\u201c\u719f\u6089\u5ea6\u201d\u8bc4\u4f30\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>completion-based<\/strong>\uff1a\u51c6\u5907\u4e86 300 \u4e2a\u201c\u770b\u8d77\u6765\u50cf\u539f\u6587\u7247\u6bb5\u6539\u5199\u201d\u7684\u63d0\u793a\uff0c\u8ba9\u6a21\u578b\u7eed\u5199\uff0c\u518d\u5224\u5b9a\u662f\u5426\u6cc4\u9732\u4e13\u6709\u7ec6\u8282\uff08\u63d0\u793a\u4e0e\u5224\u5b9a\u4e5f\u501f\u52a9 GPT-4\uff0c\u4f46\u6700\u7ec8\u8bad\u7ec3\u7ed3\u679c\u8fd8\u505a\u4e86\u4eba\u5de5\u68c0\u67e5\u4ee5\u589e\u5f3a\u53ef\u9760\u6027\uff09\u3002<\/li>\n\n\n\n<li><strong>token-probability-based<\/strong>\uff1a\u4e13\u95e8\u770b\u67d0\u4e9b\u63d0\u793a\u4e0b\uff0c\u6a21\u578b\u7ed9\u201c\u4e13\u6709\u8bcd\u201d\u5206\u5230\u7684\u6982\u7387\u662f\u5426\u663e\u8457\u4e0b\u964d\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u7ed3\u679c\u4e0a\uff0c\u968f\u7740\u5fae\u8c03\u6b65\u6570\u589e\u52a0\uff0c\u201c\u719f\u6089\u5ea6\u201d\u6307\u6807\u4ece\u8f83\u9ad8\u6c34\u5e73\u5feb\u901f\u8dcc\u5230\u63a5\u8fd1 0\uff0c\u540c\u65f6 ARC\u3001BoolQ\u3001HellaSwag\u3001PIQA\u3001WinoGrande \u7b49\u57fa\u51c6\u5206\u6570\u53d8\u5316\u5f88\u5c0f\uff1b\u8bba\u6587\u8fd8\u5c55\u793a\u4e86\u50cf \u201cHarry Potter studies \u2026\u201d \u8fd9\u79cd\u63d0\u793a\u4e0b\uff0c\u6a21\u578b\u628a\u4e0b\u4e00\u4e2a\u8bcd\u4ece\u660e\u663e\u6307\u5411\u5c0f\u8bf4\u7684\u8bcd\uff08\u5982 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Harry Potter? Approximate Unlearning in L [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[8],"tags":[39,86,79],"class_list":["post-6846","post","type-post","status-publish","format-standard","hentry","category-tech","tag-ai","tag-llm","tag-microsoft"],"rttpg_featured_image_url":null,"rttpg_author":{"display_name":"NullThought","author_link":"https:\/\/nullthought.net\/?author=1"},"rttpg_comment":0,"rttpg_category":"<a href=\"https:\/\/nullthought.net\/?cat=8\" rel=\"category\">Tech<\/a>","rttpg_excerpt":"\u8bba\u6587Who&#8217;s Harry Potter? 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