{"id":40252,"date":"2025-05-28T13:43:04","date_gmt":"2025-05-28T05:43:04","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/40252.html"},"modified":"2025-05-28T13:43:04","modified_gmt":"2025-05-28T05:43:04","slug":"dit%e3%80%81-u-net-%e4%b8%8e%e8%87%aa%e5%9b%9e%e5%bd%92%e6%a8%a1%e5%9e%8b%e7%9a%84%e4%bc%98%e5%8a%bf","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/40252.html","title":{"rendered":"DiT\u3001 U-Net \u4e0e\u81ea\u56de\u5f52\u6a21\u578b\u7684\u4f18\u52bf"},"content":{"rendered":"<h3>DiT \u76f8\u5bf9\u4e8e U-Net \u7684\u4f18\u52bf<\/h3>\n<li>\n<p>\u5168\u5c40\u81ea\u6ce8\u610f\u529b vs. \u5c40\u90e8\u5377\u79ef<\/p>\n<ul>\n<li>U-Net \u4f9d\u8d56\u5377\u79ef\u548c\u6c60\u5316\/\u4e0a\u91c7\u6837\u6765\u9010\u5c42\u6269\u5927\u611f\u53d7\u91ce&#xff0c;\u6355\u6349\u5168\u5c40\u4fe1\u606f\u9700\u8981\u5806\u53e0\u5f88\u591a\u5c42\u6216\u501f\u52a9\u8df3\u8dc3\u8fde\u63a5&#xff08;skip connections&#xff09;\u3002<\/li>\n<li>DiT \u5728\u6bcf\u4e2a\u5206\u8fa8\u7387\u9636\u6bb5\u90fd\u7528 Transformer \u6a21\u5757&#xff08;\u591a\u5934\u81ea\u6ce8\u610f\u529b &#043; MLP&#xff09;\u66ff\u4ee3\u5377\u79ef\u6a21\u5757&#xff0c;\u53ef\u76f4\u63a5\u5728\u4efb\u610f\u5c42\u7ea7\u901a\u8fc7\u81ea\u6ce8\u610f\u529b\u8de8\u8d8a\u6574\u5f20\u56fe\u50cf\u7684\u6240\u6709 Patch&#xff0c;\u5b9e\u73b0\u771f\u6b63\u7684\u5168\u5c40\u4fe1\u606f\u805a\u5408\u3002<\/li>\n<li>\u4f18\u52bf&#xff1a;\n<ul>\n<li>\u66f4\u5feb\u5730\u6355\u6349\u8fdc\u8ddd\u79bb\u50cf\u7d20\u4e4b\u95f4\u7684\u76f8\u5173\u6027<\/li>\n<li>\u7ec6\u7c92\u5ea6\u5730\u52a8\u6001\u8c03\u6574\u6ce8\u610f\u529b\u6743\u91cd&#xff0c;\u4e0d\u518d\u53d7\u9650\u4e8e\u56fa\u5b9a\u5377\u79ef\u6838\u5927\u5c0f<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<li>\n<p>\u7edf\u4e00\u7684\u5206\u8fa8\u7387\u5904\u7406 vs. \u7f16\u7801-\u89e3\u7801\u8df3\u8dc3<\/p>\n<ul>\n<li>U-Net \u5178\u578b\u7684 \u201c\u7f16\u7801\u5668\u2013\u89e3\u7801\u5668\u201d \u7ed3\u6784&#xff1a;\u7f16\u7801\u9636\u6bb5\u4e0b\u91c7\u6837\u538b\u7f29\u7279\u5f81&#xff0c;\u89e3\u7801\u9636\u6bb5\u518d\u901a\u8fc7\u8de8\u5c42\u8df3\u8dc3\u8fde\u63a5\u6062\u590d\u7a7a\u95f4\u7ec6\u8282\u3002<\/li>\n<li>DiT \u91c7\u7528\u4e00\u7cfb\u5217\u4fdd\u6301 Token \u6570\u91cf\u4e0d\u53d8\u7684 Transformer Blocks&#xff0c;\u5728\u540c\u4e00\u5206\u8fa8\u7387\u4e0a\u76f4\u63a5\u5bf9 Patch Token \u505a\u6df1\u5ea6\u53d8\u6362&#xff0c;\u6700\u540e\u518d\u505a\u5c11\u91cf\u91cd\u6784\u3002<\/li>\n<li>\u4f18\u52bf&#xff1a;\n<ul>\n<li>\u907f\u514d\u591a\u6b21\u4e0b\u91c7\u6837\/\u4e0a\u91c7\u6837\u5e26\u6765\u7684\u4fe1\u606f\u4e22\u5931\u4e0e\u63d2\u503c\u4f2a\u5f71<\/li>\n<li>\u8de8\u5c3a\u5ea6\u4fe1\u606f\u878d\u5408\u66f4\u52a0\u5e73\u6ed1&#xff0c;\u4e0d\u4f9d\u8d56\u663e\u5f0f\u7684 skip connections<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<li>\n<p>\u65f6\u95f4\/\u6761\u4ef6\u5d4c\u5165\u7684\u7075\u6d3b\u6ce8\u5165<\/p>\n<ul>\n<li>U-Net \u901a\u5e38\u7528 AdaGN\u3001FiLM \u6216\u65f6\u5e8f\u6ce8\u610f\u529b\u5c06\u566a\u58f0\u6b65\u6570&#xff08;timestep&#xff09;\u4ee5\u53ca\u7c7b\u522b\/\u6587\u672c\u6761\u4ef6\u6ce8\u5165\u5230\u5377\u79ef\u5206\u652f\u4e2d\u3002<\/li>\n<li>DiT \u53ef\u5c06\u65f6\u5e8f&#xff08;sinusoidal\u2010PE&#xff09;\u548c\u6761\u4ef6&#xff08;class token \u6216 cross\u2010attention \u67e5\u8be2&#xff09;\u5f53\u4f5c\u989d\u5916\u7684 Token&#xff0c;\u6216\u901a\u8fc7 LayerNorm \u4e0e MLP \u878d\u5408&#xff0c;\u5f62\u5f0f\u66f4\u7edf\u4e00\u3002<\/li>\n<li>\u4f18\u52bf&#xff1a;\n<ul>\n<li>\u878d\u5408\u673a\u5236\u7b80\u5355\u4e00\u81f4&#xff0c;\u6613\u6269\u5c55\u5230\u591a\u79cd\u6761\u4ef6&#xff08;\u5982\u6587\u672c\u3001\u59ff\u6001\u56fe\u3001\u5c5e\u6027\u5411\u91cf&#xff09;<\/li>\n<li>\u6761\u4ef6\u4fe1\u606f\u80fd\u76f4\u63a5\u53c2\u4e0e\u81ea\u6ce8\u610f\u529b\u8ba1\u7b97&#xff0c;\u4e0d\u518d\u53d7\u9650\u4e8e\u5377\u79ef\u6838\u7684\u5c40\u90e8\u8303\u56f4<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<li>\n<p>\u53ef\u6269\u5c55\u6027\u4e0e\u9884\u8bad\u7ec3\u4f18\u52bf<\/p>\n<ul>\n<li>U-Net \u5377\u79ef\u6838\u3001\u901a\u9053\u6570\u9700\u9488\u5bf9\u6269\u6563\u4efb\u52a1\u4ece\u5934\u8bbe\u8ba1\u4e0e\u8bad\u7ec3\u3002<\/li>\n<li>DiT \u53ef\u4ee5\u501f\u9274\u6216\u76f4\u63a5\u5fae\u8c03\u5df2\u6709\u7684\u89c6\u89c9 Transformer&#xff08;\u5982 ViT\u3001Swin&#xff09;\u9884\u8bad\u7ec3\u6743\u91cd&#xff0c;\u5728\u5927\u89c4\u6a21\u56fe\u50cf\u6570\u636e\u4e0a\u5148\u884c\u5b66\u4e60\u8868\u5f81&#xff0c;\u518d\u505a\u6269\u6563\u4efb\u52a1\u5fae\u8c03\u3002<\/li>\n<li>\u4f18\u52bf&#xff1a;\n<ul>\n<li>\u5c11\u91cf\u6570\u636e\u5373\u53ef\u83b7\u5f97\u4f18\u5f02\u6548\u679c&#xff0c;\u8bad\u7ec3\u6536\u655b\u66f4\u5feb<\/li>\n<li>\u53c2\u6570\u89c4\u6a21\u4e0e\u6027\u80fd\u53ef\u901a\u8fc7\u5806\u53e0 Transformer Block\u3001\u589e\u52a0 Head \u6570\u6216 Hidden Size \u7ebf\u6027\u6269\u5c55<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<li>\n<p>\u8ba1\u7b97\u6548\u7387\u4e0e\u5b9e\u73b0\u7b80\u6d01<\/p>\n<ul>\n<li>U-Net \u7684\u591a\u5206\u8fa8\u7387\u8df3\u8dc3\u8fde\u63a5\u548c\u5377\u79ef\u6838\u5b9e\u73b0\u8f83\u4e3a\u590d\u6742&#xff0c;\u5c24\u5176\u5728\u591a\u5c3a\u5ea6\u4e0b\u5bb9\u6613\u5f15\u5165\u5185\u5b58\u5cf0\u503c\u3002<\/li>\n<li>DiT \u6a21\u578b\u4e3b\u4f53\u4ec5\u7531\u6807\u51c6 Transformer Block \u7ec4\u6210&#xff0c;\u786c\u4ef6\u4e0a\u5bf9\u81ea\u6ce8\u610f\u529b\u6709\u9ad8\u5ea6\u4f18\u5316&#xff08;\u5982 FlashAttention&#xff09;&#xff0c;\u5728\u5927\u5c3a\u5bf8\u8f93\u5165\u65f6\u5e76\u884c\u66f4\u9ad8\u6548\u3002<\/li>\n<li>\u4f18\u52bf&#xff1a;\n<ul>\n<li>\u4ee3\u7801\u7ed3\u6784\u7edf\u4e00\u7b80\u6d01&#xff0c;\u4fbf\u4e8e\u7ef4\u62a4\u548c\u6269\u5c55<\/li>\n<li>\u5728\u9ad8\u5206\u8fa8\u7387\u4e0b&#xff0c;\u81ea\u6ce8\u610f\u529b&#xff0b;\u7ebf\u6027\u5c42\u7ec4\u5408\u5728\u7279\u5b9a\u5b9e\u73b0\u4e0b\u6bd4\u591a\u6b21\u5377\u79ef&#xff0b;\u4e0a\u91c7\u6837\u66f4\u7701\u5185\u5b58<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<p>\u603b\u7ed3<\/p>\n<p>DiT \u5c06 Transformer \u7684\u5168\u5c40\u81ea\u6ce8\u610f\u529b\u4e0e\u6269\u6563\u6a21\u578b\u7d27\u5bc6\u7ed3\u5408&#xff0c;\u7a81\u7834\u4e86 U-Net \u5c40\u90e8\u5377\u79ef\u7684\u56fa\u6709\u9650\u5236&#xff0c;\u4f7f\u5f97\u6a21\u578b\u5728\u6355\u6349\u8fdc\u7a0b\u4f9d\u8d56\u3001\u6761\u4ef6\u4fe1\u606f\u878d\u5408\u3001\u53ef\u6269\u5c55\u6027\u548c\u9884\u8bad\u7ec3\u8f6c\u79fb\u4e0a\u5177\u5907\u663e\u8457\u4f18\u52bf&#xff0c;\u4e5f\u4e3a\u66f4\u9ad8\u5206\u8fa8\u7387\u4e0b\u7684\u9ad8\u8d28\u91cf\u56fe\u50cf\u751f\u6210\u63d0\u4f9b\u4e86\u66f4\u4f18\u7684\u67b6\u6784\u9009\u62e9\u3002<\/p>\n<hr \/>\n<h3>\u81ea\u56de\u5f52\u751f\u6210\u6a21\u578b vs. \u6269\u6563\u6a21\u578b \u7684\u533a\u522b<\/h3>\n<li>\n<p>\u751f\u6210\u8fc7\u7a0b&#xff1a;\u987a\u5e8f vs. \u5e76\u884c<\/p>\n<ul>\n<li>\u81ea\u56de\u5f52\u6a21\u578b&#xff1a;\n<ul>\n<li>\u5c06\u56fe\u50cf\u7684\u8054\u5408\u5206\u5e03\u5206\u89e3\u4e3a\u4e00\u7cfb\u5217\u6761\u4ef6\u5206\u5e03&#xff1a; <span class=\"katex--display\"><span class=\"katex-display\"><span class=\"katex\"><span class=\"katex-mathml\">\n<p>               p <\/p>\n<p>               ( <\/p>\n<p>               x <\/p>\n<p>               ) <\/p>\n<p>               &#061; <\/p>\n<p>                \u220f <\/p>\n<p>                 i <\/p>\n<p>                 &#061; <\/p>\n<p>                 1 <\/p>\n<p>                N <\/p>\n<p>               p <\/p>\n<p>               ( <\/p>\n<p>                x <\/p>\n<p>                i <\/p>\n<p>               \u2223 <\/p>\n<p>                x <\/p>\n<p>                 &lt; <\/p>\n<p>                 i <\/p>\n<p>               ) <\/p>\n<p>              p(x)&#061;\\\\prod_{i&#061;1}^Np(x_i\\\\mid x_{&lt;i}) <\/p>\n<p>          <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 1em;vertical-align: -0.25em\"><\/span><span class=\"mord mathdefault\">p<\/span><span class=\"mopen\">(<\/span><span class=\"mord mathdefault\">x<\/span><span class=\"mclose\">)<\/span><span class=\"mspace\" style=\"margin-right: 0.277778em\"><\/span><span class=\"mrel\">&#061;<\/span><span class=\"mspace\" style=\"margin-right: 0.277778em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 3.106005em;vertical-align: -1.277669em\"><\/span><span class=\"mop op-limits\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 1.828336em\"><span class=\"\" style=\"top: -1.872331em;margin-left: 0em\"><span class=\"pstrut\" style=\"height: 3.05em\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\"><span class=\"mord mathdefault mtight\">i<\/span><span class=\"mrel mtight\">&#061;<\/span><span class=\"mord mtight\">1<\/span><\/span><\/span><\/span><span class=\"\" style=\"top: -3.050005em\"><span class=\"pstrut\" style=\"height: 3.05em\"><\/span><span class=\"\"><span class=\"mop op-symbol large-op\">\u220f<\/span><\/span><\/span><span class=\"\" style=\"top: -4.300005em;margin-left: 0em\"><span class=\"pstrut\" style=\"height: 3.05em\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mathdefault mtight\" style=\"margin-right: 0.10903em\">N<\/span><\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 1.277669em\"><span class=\"\"><\/span><\/span><\/span><\/span><\/span><span class=\"mspace\" style=\"margin-right: 0.166667em\"><\/span><span class=\"mord mathdefault\">p<\/span><span class=\"mopen\">(<\/span><span class=\"mord\"><span class=\"mord mathdefault\">x<\/span><span class=\"msupsub\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.311664em\"><span class=\"\" style=\"top: -2.55em;margin-left: 0em;margin-right: 0.05em\"><span class=\"pstrut\" style=\"height: 2.7em\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mathdefault mtight\">i<\/span><\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.15em\"><span class=\"\"><\/span><\/span><\/span><\/span><\/span><\/span><span class=\"mspace\" style=\"margin-right: 0.277778em\"><\/span><span class=\"mrel\">\u2223<\/span><span class=\"mspace\" style=\"margin-right: 0.277778em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 1em;vertical-align: -0.25em\"><\/span><span class=\"mord\"><span class=\"mord mathdefault\">x<\/span><span class=\"msupsub\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.311664em\"><span class=\"\" style=\"top: -2.55em;margin-left: 0em;margin-right: 0.05em\"><span class=\"pstrut\" style=\"height: 2.7em\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\"><span class=\"mrel mtight\">&lt;<\/span><span class=\"mord mathdefault mtight\">i<\/span><\/span><\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.17737em\"><span class=\"\"><\/span><\/span><\/span><\/span><\/span><\/span><span class=\"mclose\">)<\/span><\/span><\/span><\/span><\/span><\/span><\/li>\n<li>\u751f\u6210\u65f6\u4e25\u683c\u6309\u7167\u5148\u540e\u6b21\u5e8f&#xff0c;\u4e00\u4e2a\u50cf\u7d20&#xff08;\u6216\u4e00\u4e2a patch\/token&#xff09;\u63a5\u7740\u4e00\u4e2a\u50cf\u7d20\u5730\u9884\u6d4b&#xff0c;\u9700\u8981\u5728\u6bcf\u4e00\u6b65\u7b49\u5f85\u524d\u4e00\u6b65\u5b8c\u6210&#xff0c;\u5b8c\u5168\u4e32\u884c\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\u6269\u6563\u6a21\u578b&#xff08;U-Net\/DiT&#xff09;&#xff1a;\n<ul>\n<li>\u5c06\u751f\u6210\u770b\u4f5c\u4ece\u7eaf\u566a\u58f0\u9010\u6b65\u53bb\u566a\u7684\u8fc7\u7a0b&#xff0c;\u53ef\u4ee5\u5728\u6bcf\u4e2a\u53bb\u566a\u6b65\u9aa4\u4e2d\u5e76\u884c\u9884\u6d4b\u5168\u56fe\u50cf\u7d20&#xff08;\u6216\u5168 Token&#xff09;\u3002<\/li>\n<li>\u6bcf\u4e00\u6b65\u53ef\u4ee5\u5e76\u884c\u9884\u6d4b\u5168\u56fe\u50cf\u7d20\/Token&#xff0c;\u5185\u90e8\u65e0\u5e8f\u5217\u5316\u4f9d\u8d56\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<li>\n<p>\u67b6\u6784&#xff1a;\u56e0\u679c\u63a9\u7801 vs. \u5168\u5c40\u4ea4\u4e92<\/p>\n<ul>\n<li>\u81ea\u56de\u5f52\u6a21\u578b&#xff1a;\n<ul>\n<li>\u6838\u5fc3\u662f\u56e0\u679c&#xff08;causal&#xff09;\u81ea\u6ce8\u610f\u529b\u6216\u5377\u79ef&#xff08;\u5982 PixelCNN&#xff09;&#xff0c;\u53ea\u5141\u8bb8\u770b\u5230\u5df2\u751f\u6210\u90e8\u5206\u3002<\/li>\n<li>\u901a\u5e38\u4f7f\u7528 Transformer Decoder&#xff08;\u5e26\u56e0\u679c Mask&#xff09;\u6216 PixelRNN\/PixelCNN\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\u6269\u6563\u6a21\u578b&#xff1a;\n<ul>\n<li>U-Net \u7528\u591a\u5c42\u7f16\u7801\u2013\u89e3\u7801\u5377\u79ef&#xff0c;DiT \u7528\u5806\u53e0\u7684 Transformer Blocks&#xff08;\u65e0\u56e0\u679c Mask&#xff09;\u505a\u5168\u5c40\u81ea\u6ce8\u610f\u529b\u3002<\/li>\n<li>\u5b83\u4eec\u4e0d\u9700\u8981\u5728\u540c\u4e00\u5f20\u56fe\u5185\u90e8\u505a\u5e8f\u5217\u5316\u751f\u6210&#xff0c;\u56e0\u6b64\u6ce8\u610f\u529b\u548c\u5377\u79ef\u90fd\u53ef\u8de8\u5168\u56fe\u81ea\u7531\u8fd0\u4f5c\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<li>\n<p>\u8bad\u7ec3\u76ee\u6807&#xff1a;\u6700\u5927\u4f3c\u7136 vs. \u53bb\u566a\u5339\u914d<\/p>\n<ul>\n<li>\u81ea\u56de\u5f52\u6a21\u578b&#xff1a;\n<ul>\n<li>\u76f4\u63a5\u5bf9\u50cf\u7d20\/Token \u505a\u4ea4\u53c9\u71b5\u6216\u8d1f\u5bf9\u6570\u4f3c\u7136\u6700\u5927\u5316\u3002 \u6a21\u578b\u5b66\u4f1a\u51c6\u786e\u9884\u6d4b\u4e0b\u4e00\u4e2a\u50cf\u7d20\u7684\u79bb\u6563\u5206\u5e03\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\u6269\u6563\u6a21\u578b&#xff1a;\n<ul>\n<li>\u5bf9\u52a0\u566a\u2014\u53bb\u566a\u8fc7\u7a0b\u5efa\u6a21&#xff0c;\u5e38\u7528 score matching &#xff08;\u4f30\u8ba1\u566a\u58f0\u5206\u5e03\u7684\u68af\u5ea6&#xff09;\u6216\u5747\u65b9\u8bef\u5dee\u53bb\u566a\u76ee\u6807\u3002<\/li>\n<li>\u65e0\u9700\u79bb\u6563\u5316\u50cf\u7d20\u5206\u5e03&#xff0c;\u8bad\u7ec3\u65f6\u9700\u8bbe\u8ba1\u566a\u58f0\u8c03\u5ea6&#xff08;noise schedule&#xff09;\u548c\u65f6\u95f4\u6b65&#xff08;timestep&#xff09;\u5d4c\u5165\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<li>\n<p>\u91c7\u6837\u901f\u5ea6\u4e0e\u6548\u7387<\/p>\n<ul>\n<li>\u81ea\u56de\u5f52\u6a21\u578b&#xff1a;\n<ul>\n<li>\u5e8f\u5217\u957f\u5ea6\u8d8a\u957f&#xff0c;\u751f\u6210\u65f6\u95f4\u7ebf\u6027\u589e\u957f&#xff0c;\u6bcf\u4e00\u6b65\u90fd\u9700\u4e00\u6b21\u524d\u5411\u63a8\u7406&#xff0c;\u63a8\u7406\u901f\u5ea6\u53d7\u9650\u4e8e\u6700\u5c0f\u5355\u4f4d&#xff08;\u50cf\u7d20\/patch&#xff09;\u7684\u987a\u5e8f\u4f9d\u8d56\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\u6269\u6563\u6a21\u578b&#xff1a;\n<ul>\n<li>\u867d\u7136\u8981\u8fed\u4ee3\u591a\u6b65&#xff08;\u901a\u5e38\u6570\u5341\u5230\u6570\u767e\u6b65&#xff09;&#xff0c;\u4f46\u6bcf\u6b65\u80fd\u4e00\u6b21\u6027\u9884\u6d4b\u6574\u5f20\u56fe&#xff0c;\u4e14\u53ef\u4ee5\u501f\u52a9\u5e76\u884c\u786c\u4ef6\u4e0e\u4f18\u5316&#xff08;\u5982 FlashAttention\u3001\u6279\u91cf\u53bb\u566a&#xff09;\u52a0\u901f\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<li>\n<p>\u751f\u6210\u8d28\u91cf\u4e0e\u7075\u6d3b\u6027<\/p>\n<ul>\n<li>\u81ea\u56de\u5f52\u6a21\u578b&#xff1a;\n<ul>\n<li>\u5728\u5c0f\u5206\u8fa8\u7387\u4e0b\u53ef\u8fbe\u9ad8\u50cf\u7d20\u7ea7\u4e00\u81f4\u6027&#xff0c;\u4f46\u9ad8\u5206\u8fa8\u7387\u4e0b\u96be\u4ee5\u6355\u6349\u5168\u5c40\u7ed3\u6784\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\u6269\u6563\u6a21\u578b&#xff1a;\n<ul>\n<li>\u591a\u6b65\u53bb\u566a\u7684\u968f\u673a\u6027\u548c\u5168\u5c40\u4fe1\u606f\u4ea4\u4e92&#xff0c;\u80fd\u751f\u6210\u66f4\u4e30\u5bcc\u3001\u591a\u6837\u5316\u7684\u5168\u5c40\u7ed3\u6784&#xff0c;\u9ad8\u5206\u8fa8\u7387\u8868\u73b0\u4f18\u5f02\u3002<\/li>\n<\/ul>\n<\/li>\n<li>DiT \u4f18\u52bf&#xff1a;\n<ul>\n<li>\u5229\u7528 Transformer \u9884\u8bad\u7ec3\u8868\u5f81&#xff0c;\u8fdb\u4e00\u6b65\u63d0\u5347\u7ec6\u8282\u4e00\u81f4\u6027\u548c\u53ef\u63a7\u6027\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<p>\u603b\u7ed3&#xff1a;<\/p>\n<p>\u81ea\u56de\u5f52\u751f\u6210\u6a21\u578b\u5f3a\u8c03\u201c\u4e00\u6b65\u4e00\u6b65\u6765\u201d&#xff0c;\u9760\u56e0\u679c\u63a9\u7801\u548c\u79bb\u6563\u6700\u5927\u4f3c\u7136\u4fdd\u8bc1\u6bcf\u4e2a\u50cf\u7d20\u90fd\u88ab\u7cbe\u786e\u5efa\u6a21&#xff1b;\u800c\u6269\u6563\u6a21\u578b&#xff08;\u65e0\u8bba\u662f\u4f20\u7edf U-Net \u8fd8\u662f\u57fa\u4e8e Transformer \u7684 DiT&#xff09;\u5219\u901a\u8fc7\u201c\u540c\u65f6\u53bb\u566a\u5168\u56fe\u3001\u591a\u6b21\u8fed\u4ee3\u201d\u7684\u65b9\u5f0f&#xff0c;\u7ed3\u5408\u8fde\u7eed\u566a\u58f0\u5efa\u6a21\u4e0e\u5e76\u884c\u5168\u5c40\u4ea4\u4e92&#xff0c;\u5b9e\u73b0\u4e86\u66f4\u9ad8\u6548\u3001\u66f4\u7075\u6d3b\u7684\u9ad8\u5206\u8fa8\u7387\u56fe\u50cf\u751f\u6210\u3002<\/p>\n<table>\n<tr>\u5bf9\u6bd4\u7ef4\u5ea6U-Net \u6269\u6563\u6a21\u578bDiT&#xff08;Diffusion Transformer&#xff09;\u81ea\u56de\u5f52\u751f\u6210\u6a21\u578b<\/tr>\n<tbody>\n<tr>\n<td align=\"center\">\u67b6\u6784<\/td>\n<td align=\"center\">\u7f16\u7801-\u89e3\u7801\u5377\u79ef&#xff08;\u591a\u5c3a\u5ea6 &#043; skip&#xff09;<\/td>\n<td align=\"center\">\u591a\u5c42 Transformer Block&#xff08;Patch Token&#xff09;<\/td>\n<td align=\"center\">Transformer Decoder \/ PixelCNN<\/td>\n<\/tr>\n<tr>\n<td align=\"center\">\u751f\u6210\u8fc7\u7a0b<\/td>\n<td align=\"center\">\u4ece\u566a\u58f0\u5e76\u884c\u53bb\u566a&#xff0c;\u591a\u6b65\u8fed\u4ee3<\/td>\n<td align=\"center\">\u4ece\u566a\u58f0\u5e76\u884c\u53bb\u566a&#xff0c;\u591a\u6b65\u8fed\u4ee3<\/td>\n<td align=\"center\">\u4e32\u884c\u9010\u50cf\u7d20\/\u9010 Token \u751f\u6210<\/td>\n<\/tr>\n<tr>\n<td align=\"center\">\u6ce8\u610f\u529b\u8303\u56f4<\/td>\n<td align=\"center\">\u5c40\u90e8\u5377\u79ef&#xff0c;\u9760\u5c42\u7ea7\u6269\u5c55\u611f\u53d7\u91ce<\/td>\n<td align=\"center\">\u5168\u5c40\u81ea\u6ce8\u610f\u529b&#xff0c;\u4efb\u610f Patch \u4ea4\u4e92<\/td>\n<td align=\"center\">\u56e0\u679c Mask&#xff0c;\u4ec5\u80fd\u770b\u5230\u5df2\u751f\u6210\u5185\u5bb9<\/td>\n<\/tr>\n<tr>\n<td align=\"center\">\u6761\u4ef6\u6ce8\u5165<\/td>\n<td align=\"center\">AdaGN\/FiLM\/\u65f6\u5e8f\u6ce8\u610f\u529b<\/td>\n<td align=\"center\">\u6761\u4ef6 Token &#043; Sinusoidal PE \u7edf\u4e00\u6ce8\u5165<\/td>\n<td align=\"center\">Prefix Prompt \u6216\u5728\u8f93\u5165\u7aef\u62fc\u63a5<\/td>\n<\/tr>\n<tr>\n<td align=\"center\">\u8bad\u7ec3\u76ee\u6807<\/td>\n<td align=\"center\">MSE \u53bb\u566a \/ Score Matching<\/td>\n<td align=\"center\">MSE \u53bb\u566a \/ Score Matching<\/td>\n<td align=\"center\">\u4ea4\u53c9\u71b5&#xff08;NLL&#xff09;\u6700\u5927\u4f3c\u7136<\/td>\n<\/tr>\n<tr>\n<td align=\"center\">\u63a8\u7406\u6548\u7387<\/td>\n<td align=\"center\">\u6bcf\u6b65\u5e76\u884c&#xff0c;\u9700\u51e0\u5341\u81f3\u4e0a\u767e\u6b65<\/td>\n<td align=\"center\">\u6bcf\u6b65\u5e76\u884c&#xff0c;\u9700\u51e0\u5341\u81f3\u4e0a\u767e\u6b65<\/td>\n<td align=\"center\">\u4e32\u884c\u751f\u6210&#xff0c;\u6b65\u6570 \u221d \u5e8f\u5217\u957f\u5ea6<\/td>\n<\/tr>\n<tr>\n<td align=\"center\">\u9884\u8bad\u7ec3\u4f18\u52bf<\/td>\n<td align=\"center\">\u901a\u5e38\u4ece\u5934\u8bad\u7ec3<\/td>\n<td align=\"center\">\u53ef\u5fae\u8c03 ViT\/Swin \u7b49\u5927\u89c4\u6a21\u9884\u8bad\u7ec3\u6a21\u578b<\/td>\n<td align=\"center\">\u53ef\u5fae\u8c03 GPT \u7b49\u8bed\u8a00\u5927\u6a21\u578b<\/td>\n<\/tr>\n<tr>\n<td align=\"center\">\u9002\u7528\u573a\u666f<\/td>\n<td align=\"center\">\u4e2d\u5206\u8fa8\u7387\u56fe\u50cf\u751f\u6210<\/td>\n<td align=\"center\">\u9ad8\u5206\u8fa8\u7387\u3001\u9700\u8981\u5168\u5c40\u4e00\u81f4\u6027<\/td>\n<td align=\"center\">\u4f4e\u5206\u8fa8\u7387\u3001\u8ffd\u6c42\u50cf\u7d20\u7ea7\u4e00\u81f4\u6027<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u7b80\u800c\u8a00\u4e4b&#xff0c;U-Net \u6269\u6563\u5229\u7528\u591a\u5c3a\u5ea6\u5377\u79ef\u53bb\u566a&#xff0c;DiT \u5219\u5728\u5404\u5c3a\u5ea6\u7528\u5168\u5c40\u81ea\u6ce8\u610f\u529b\u66ff\u4ee3\u5377\u79ef&#xff0c;\u4ece\u800c\u66f4\u6709\u6548\u5730\u6355\u6349\u957f\u7a0b\u4f9d\u8d56&#xff1b;\u81ea\u56de\u5f52\u6a21\u578b\u5219\u901a\u8fc7\u56e0\u679c Mask \u4e32\u884c\u751f\u6210&#xff0c;\u4fdd\u8bc1\u50cf\u7d20\u7ea7\u6700\u5927\u4f3c\u7136\u3002\u6269\u6563\u6a21\u578b\u6bcf\u6b65\u53ef\u5e76\u884c\u9884\u6d4b\u5168\u56fe&#xff0c;\u901f\u5ea6\u4f18\u52bf\u660e\u663e&#xff1b;\u81ea\u56de\u5f52\u867d\u7136\u7cbe\u5ea6\u9ad8&#xff0c;\u4f46\u63a8\u7406\u5fc5\u987b\u7b49\u4e0a\u4e00\u6b65\u5b8c\u6210&#xff0c;\u6548\u7387\u8f83\u4f4e\u3002DiT \u8fd8\u80fd\u76f4\u63a5\u590d\u7528 ViT\/Swin \u7b49\u9884\u8bad\u7ec3\u6a21\u578b\u52a0\u901f\u6536\u655b&#xff0c;\u9002\u5408\u9ad8\u5206\u8fa8\u7387\u56fe\u50cf\u751f\u6210\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6587\u7ae0\u6d4f\u89c8\u9605\u8bfb1k\u6b21\uff0c\u70b9\u8d5e9\u6b21\uff0c\u6536\u85cf16\u6b21\u3002DiT \u5c06 Transformer \u7684\u5168\u5c40\u81ea\u6ce8\u610f\u529b\u4e0e\u6269\u6563\u6a21\u578b\u7d27\u5bc6\u7ed3\u5408\uff0c\u7a81\u7834\u4e86 U-Net \u5c40\u90e8\u5377\u79ef\u7684\u56fa\u6709\u9650\u5236\uff0c\u4f7f\u5f97\u6a21\u578b\u5728\u6355\u6349\u8fdc\u7a0b\u4f9d\u8d56\u3001\u6761\u4ef6\u4fe1\u606f\u878d\u5408\u3001\u53ef\u6269\u5c55\u6027\u548c\u9884\u8bad\u7ec3\u8f6c\u79fb\u4e0a\u5177\u5907\u663e\u8457\u4f18\u52bf\uff0c\u4e5f\u4e3a\u66f4\u9ad8\u5206\u8fa8\u7387\u4e0b\u7684\u9ad8\u8d28\u91cf\u56fe\u50cf\u751f\u6210\u63d0\u4f9b\u4e86\u66f4\u4f18\u7684\u67b6\u6784\u9009\u62e9\u3002<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[3683,50,3684,62,3682],"topic":[],"class_list":["post-40252","post","type-post","status-publish","format-standard","hentry","category-server","tag-diffusion-models","tag-50","tag-3684","tag-62","tag-3682"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>DiT\u3001 U-Net 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