{"id":112196,"date":"2026-10-02T20:51:28","date_gmt":"2026-10-02T12:51:28","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/112196.html"},"modified":"2026-10-02T20:51:28","modified_gmt":"2026-10-02T12:51:28","slug":"ddpm%e6%89%a9%e6%95%a3%e6%a8%a1%e5%9e%8b%e4%bb%a3%e7%a0%81%e5%ae%9e%e6%88%98%ef%bc%9a%e5%89%8d%e5%90%91%e5%8a%a0%e5%99%aa%e9%80%a0%e6%95%b0%e6%8d%ae%e3%80%81u-net%e5%99%aa%e5%a3%b0%e9%a2%84%e6%b5%8b","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/112196.html","title":{"rendered":"DDPM\u6269\u6563\u6a21\u578b\u4ee3\u7801\u5b9e\u6218\uff1a\u524d\u5411\u52a0\u566a\u9020\u6570\u636e\u3001U-Net\u566a\u58f0\u9884\u6d4b\u4e0e\u53cd\u5411\u751f\u6210\u624b\u5199\u6570\u5b57"},"content":{"rendered":"<h3>\u76ee\u5f55<\/h3>\n<ul>\n<li>\u4e00\u3001\u4efb\u52a1\u8bbe\u5b9a&#xff1a;\u4e3a\u4ec0\u4e48\u53ea\u751f\u6210\u6570\u5b57 8<\/li>\n<li>\u4e8c\u3001\u524d\u5411\u8fc7\u7a0b&#xff1a;200 \u6b65\u628a\u4e00\u5f20\u56fe\u6bc1\u6389<\/li>\n<li>\u4e09\u3001\u5236\u9020\u8bad\u7ec3\u6837\u672c&#xff1a;\u672c\u96c6\u7684\u6838\u5fc3<\/li>\n<li>\u56db\u3001\u4e24\u4e2a\u5173\u952e\u8ba4\u77e5<\/li>\n<li>\u4e94\u3001U-Net&#xff1a;\u6269\u6563\u6a21\u578b\u7684&#034;\u5927\u8111&#034;\n<ul>\n<li>U-Net \u4e0d\u662f\u5fc5\u9009\u9879&#xff0c;\u53ea\u662f\u7ecf\u5178\u5b9e\u73b0<\/li>\n<li>\u6838\u5fc3\u8bbe\u8ba1&#xff1a;\u65f6\u95f4\u4fe1\u53f7\u600e\u4e48\u8fdb\u7f51\u7edc<\/li>\n<\/ul>\n<\/li>\n<li>\u516d\u3001\u8bad\u7ec3\u4e0e\u53cd\u5411\u751f\u6210<\/li>\n<li>\u4e03\u3001\u8def\u7ebf\u9009\u62e9&#xff1a;\u4ec0\u4e48\u65f6\u5019\u4ece\u96f6\u5199&#xff0c;\u4ec0\u4e48\u65f6\u5019\u7528\u73b0\u6210\u5e93<\/li>\n<li>\u516b\u3001\u5e38\u89c1\u95ee\u9898 FAQ<\/li>\n<li>\u7ed3\u8bed<\/li>\n<\/ul>\n<p>\u6458\u8981&#xff1a;\u672c\u6587\u4ee5\u300c\u53ea\u751f\u6210\u6570\u5b57 8\u300d\u7684\u6781\u7b80\u8bbe\u5b9a&#xff0c;\u5b8c\u6574\u8d70\u901a DDPM \u6269\u6563\u6a21\u578b\u7684\u6700\u5c0f\u95ed\u73af&#xff1a;\u524d\u5411\u8fc7\u7a0b\u7528 200 \u6b65\u628a\u6e05\u6670\u56fe\u50cf\u9010\u6b65\u52a0\u566a\u6210\u7eaf\u566a\u58f0&#xff0c;\u5236\u9020\u8bad\u7ec3\u6837\u672c\u65f6\u968f\u673a\u91c7\u6837\u566a\u58f0\u4e0e\u65f6\u95f4\u6b65\u3001\u6309\u95ed\u5f0f\u516c\u5f0f\u4e00\u6b65\u5230\u4f4d\u6784\u9020\u5e26\u566a\u56fe&#xff1b;U-Net \u4f5c\u4e3a\u566a\u58f0\u9884\u6d4b\u7f51\u7edc&#xff0c;\u901a\u8fc7\u300cCNN &#043; \u65f6\u95f4\u56fe\u300d\u6ce8\u5165\u6b65\u6570\u4fe1\u606f&#xff0c;\u8bad\u7ec3\u76ee\u6807\u662f\u9884\u6d4b\u566a\u58f0\u4e0e\u771f\u5b9e\u566a\u58f0\u7684 MSE&#xff1b;\u53cd\u5411\u751f\u6210\u65f6\u4ece\u7eaf\u566a\u58f0\u51fa\u53d1&#xff0c;\u6309 DDPM \u53cd\u63a8\u516c\u5f0f\u9010\u6b65\u53bb\u566a&#xff0c;\u6700\u7ec8\u8fd8\u539f\u51fa\u624b\u5199\u98ce\u683c\u7684\u6570\u5b57 8\u3002\u5168\u6587\u8986\u76d6\u4efb\u52a1\u8bbe\u5b9a\u3001\u524d\u5411\u52a0\u566a\u3001\u6837\u672c\u6784\u9020\u3001U-Net \u7ed3\u6784\u3001\u8bad\u7ec3\u4e0e\u53cd\u5411\u91c7\u6837\u3001\u8def\u7ebf\u9009\u62e9\u53ca 12 \u4e2a\u5e38\u89c1\u95ee\u9898&#xff0c;\u5e2e\u52a9\u8bfb\u8005\u4ece\u96f6\u7406\u89e3\u6269\u6563\u6a21\u578b\u7684\u5b8c\u6574\u94fe\u8def\u3002<\/p>\n<\/p>\n<h2>DDPM\u6269\u6563\u6a21\u578b\u4ee3\u7801\u5b9e\u6218&#xff1a;\u524d\u5411\u52a0\u566a\u9020\u6570\u636e\u3001U-Net\u566a\u58f0\u9884\u6d4b\u4e0e\u53cd\u5411\u751f\u6210\u624b\u5199\u6570\u5b57<\/h2>\n<p>\u4e00\u53e5\u8bdd\u6982\u62ec&#xff1a;\u6269\u6563\u6a21\u578b\u4ee3\u7801\u5b9e\u6218\u7b2c\u4e00\u8bfe&#xff0c;\u53ea\u505a\u4e00\u4ef6\u4e8b\u2014\u2014\u4e0d\u7528\u4efb\u4f55\u6761\u4ef6\u5f15\u5bfc&#xff0c;\u8ba9\u6a21\u578b\u4ece\u7eaf\u566a\u58f0\u91cc&#034;\u65e0\u4e2d\u751f\u6709&#034;\u753b\u51fa MNIST \u98ce\u683c\u7684\u624b\u5199\u6570\u5b57 8&#xff1b;\u6574\u6761\u94fe\u8def\u5c31\u4e09\u6b65&#xff1a;\u524d\u5411\u52a0\u566a\u9020\u8bad\u7ec3\u6837\u672c\u3001U-Net \u5b66\u9884\u6d4b\u566a\u58f0\u3001\u53cd\u5411\u91c7\u6837\u9010\u6b65\u53bb\u566a\u751f\u6210\u3002<\/p>\n<p>DDPM&#xff08;Denoising Diffusion Probabilistic Model&#xff0c;\u53bb\u566a\u6269\u6563\u6982\u7387\u6a21\u578b&#xff09;\u7531\u4e24\u4e2a\u8fc7\u7a0b\u6784\u6210&#xff1a;\u524d\u5411\u8fc7\u7a0b\u5bf9\u6e05\u6670\u56fe\u50cf\u9010\u6b65\u52a0\u5165\u9ad8\u65af\u566a\u58f0&#xff0c;T&#061;200 \u6b65\u540e\u56fe\u50cf\u9000\u5316\u4e3a\u7eaf\u566a\u58f0&#xff1b;\u53cd\u5411\u8fc7\u7a0b\u8bad\u7ec3\u4e00\u4e2a U-Net&#xff0c;\u8f93\u5165\u5e26\u566a\u56fe x_t \u548c\u65f6\u95f4\u6b65 t&#xff0c;\u9884\u6d4b\u5f53\u521d\u52a0\u5165\u7684\u566a\u58f0 \u03b5&#xff0c;\u8bad\u7ec3\u76ee\u6807\u662f\u9884\u6d4b\u566a\u58f0\u4e0e\u771f\u5b9e\u566a\u58f0\u7684 MSE\u3002\u63a8\u7406\u65f6\u4ece\u4e00\u5f20\u7eaf\u968f\u673a\u566a\u58f0\u51fa\u53d1&#xff0c;\u53cd\u590d&#034;\u9884\u6d4b\u566a\u58f0\u2192\u6309\u516c\u5f0f\u53bb\u566a&#034;&#xff0c;200 \u6b65\u540e\u8fd8\u539f\u51fa\u6e05\u6670\u56fe\u50cf\u3002\u672c\u6587\u4ee5&#034;\u53ea\u751f\u6210\u6570\u5b57 8&#034;\u7684\u6781\u7b80\u8bbe\u5b9a\u8d70\u901a\u5b8c\u6574\u95ed\u73af\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"1329\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/10\/20261002125126-6abfa8ce61cee.png\" width=\"1792\" \/><\/p>\n<p>\u6269\u6563\u6a21\u578b\u5b9e\u6218\u56fe\u89e3&#xff1a;\u65e0\u4e2d\u751f\u6709\u751f\u6210\u624b\u5199\u6570\u5b57 8<\/p>\n<p>U-Net \u566a\u58f0\u9884\u6d4b\u7f51\u7edc\u4e0e\u53cd\u5411\u751f\u6210\u56fe\u89e3<\/p>\n<\/p>\n<h3>\u4e00\u3001\u4efb\u52a1\u8bbe\u5b9a&#xff1a;\u4e3a\u4ec0\u4e48\u53ea\u751f\u6210\u6570\u5b57 8<\/h3>\n<p>\u4e3a\u4e86\u628a\u95ee\u9898\u7b80\u5316\u5230\u80fd\u5728 CPU \u4e0a\u8dd1\u901a&#xff0c;\u672c\u96c6\u505a\u4e86\u4e09\u4e2a\u53d6\u820d&#xff1a;\u53ea\u590d\u539f\u6570\u5b57 8&#xff08;\u5176\u4ed6\u6570\u5b57\u5168\u90e8\u8df3\u8fc7&#xff09;\u300128\u00d728 \u7070\u5ea6\u56fe&#xff08;\u50cf\u7d20 0\u2013255 \u5f52\u4e00\u5316\u5230 0\u20131&#xff09;\u3001\u65e0\u6761\u4ef6\u751f\u6210&#xff08;\u4e0d\u5582\u7c7b\u522b\u6807\u7b7e&#xff0c;\u6a21\u578b\u81ea\u5df1\u5b66\u4f1a&#034;\u6570\u5b57 8 \u957f\u4ec0\u4e48\u6837&#034;&#xff09;\u3002\u4efb\u52a1\u867d\u7b80\u5355&#xff0c;\u4f46\u524d\u5411\u52a0\u566a\u3001\u6837\u672c\u6784\u9020\u3001\u7f51\u7edc\u7ed3\u6784\u3001\u53cd\u5411\u91c7\u6837\u56db\u4e2a\u73af\u8282\u4e00\u4e2a\u4e0d\u5c11\u2014\u2014\u8fd9\u662f\u7406\u89e3\u6269\u6563\u6a21\u578b\u5168\u8c8c\u7684\u6700\u5c0f\u95ed\u73af\u3002<\/p>\n<h3>\u4e8c\u3001\u524d\u5411\u8fc7\u7a0b&#xff1a;200 \u6b65\u628a\u4e00\u5f20\u56fe\u6bc1\u6389<\/h3>\n<p>\u6269\u6563\u6a21\u578b\u7684\u8d77\u70b9\u4e0d\u662f&#034;\u751f\u6210&#034;&#xff0c;\u800c\u662f&#034;\u7834\u574f&#034;\u3002\u4ece\u6e05\u6670\u56fe x\u2080 \u51fa\u53d1&#xff0c;\u6bcf\u4e00\u6b65\u6309\u6bd4\u4f8b\u4fdd\u7559\u539f\u56fe\u50cf\u7d20\u3001\u6df7\u5165\u65b0\u566a\u58f0\u3002<\/p>\n<p>\u5173\u952e\u7b26\u53f7\u8fa8\u6790&#xff08;\u65b0\u624b\u6700\u5bb9\u6613\u6df7&#xff09;&#xff1a;<\/p>\n<ul>\n<li>\u03b1_t&#xff08;\u5355\u6b65\u4fdd\u7559\u7387&#xff09;&#xff1a;\u6bcf\u4e00\u6b65\u4fdd\u7559\u4e0a\u4e00\u6b65\u56fe\u50cf\u7684\u6bd4\u4f8b\u3002\u672c\u96c6 CONFIG \u8bbe \u03b1 \u4ece 0.99 \u7ebf\u6027\u8870\u51cf\u5230 0.9\u2014\u2014\u524d\u671f\u5c11\u52a0\u566a\u4fdd\u7ed3\u6784&#xff0c;\u540e\u671f\u731b\u52a0\u566a\u5f7b\u5e95\u4fb5\u8680&#xff1b;<\/li>\n<li>\u1fb1_t&#xff08;\u4ee3\u7801\u91cc\u7684 alpha_M&#xff0c;\u7d2f\u79ef\u4fdd\u7559\u7387&#xff09;&#xff1a;\u4ece \u03b1\u2081 \u8fde\u4e58\u5230 \u03b1_t \u7684\u7ed3\u679c&#xff0c;\u8d8a\u4e58\u8d8a\u5c0f&#xff0c;\u4ee3\u8868 t \u6b65\u540e\u539f\u56fe\u6574\u4f53\u8fd8\u5360\u591a\u5c11\u6bd4\u4f8b\u3002<\/li>\n<\/ul>\n<p>\u4efb\u610f\u4e00\u6b65\u7684\u52a0\u566a\u516c\u5f0f&#xff08;DDPM \u95ed\u5f0f\u89e3&#xff0c;\u4e0d\u5fc5\u771f\u505a 200 \u6b65\u8fed\u4ee3&#xff09;&#xff1a;<\/p>\n<p>xt&#061;\u03b1\u02c9t\u22c5x0&#043;1\u2212\u03b1\u02c9t\u22c5\u03b5,\u03b5\u223cN(0,I)xt\u200b&#061;\u03b1\u02c9t\u200b\u200b\u22c5x0\u200b&#043;1\u2212\u03b1\u02c9t\u200b\u200b\u22c5\u03b5,\u03b5\u223cN(0,I)<\/p>\n<p>t&#061;0 \u65f6 \u1fb1\u22481&#xff0c;x_t\u2248\u539f\u56fe&#xff1b;t&#061;200 \u65f6 \u1fb1\u22480&#xff0c;x_t\u2248\u7eaf\u566a\u58f0\u3002\u8fd9\u5c31\u662f\u8bad\u7ec3\u6837\u672c\u53ef\u4ee5&#034;\u4e00\u6b65\u5230\u4f4d&#034;\u73b0\u573a\u6784\u9020\u7684\u539f\u56e0\u3002<\/p>\n<p>\u8bb2\u5e08\u9898\u5916\u8bdd&#xff1a;\u8fd9\u5957\u7ebf\u6027 schedule \u53ea\u662f\u8bba\u6587\u539f\u59cb\u505a\u6cd5&#xff0c;\u6362\u6210\u66f4\u597d\u7684\u52a0\u6743 schedule&#xff08;\u5982\u4f59\u5f26 schedule&#xff09;\u5e76\u8c03\u4f18&#xff0c;\u672c\u8eab\u5c31\u662f\u8bba\u6587\u7ea7\u521b\u65b0\u70b9\u2014\u2014\u8fd9\u662f\u65b0\u624b\u5207\u5165\u6269\u6563\u6a21\u578b\u7814\u7a76\u7684\u73b0\u5b9e\u7f1d\u9699\u3002<\/p>\n<p> <img loading=\"lazy\" decoding=\"async\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" height=\"526\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/10\/20261002125127-6abfa8cf3844f.png\" width=\"526\" \/><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"777\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/10\/20261002125127-6abfa8cf43098.png\" width=\"769\" \/><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" height=\"635\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/10\/20261002125127-6abfa8cf5f3c6.png\" width=\"635\" \/><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"528\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/10\/20261002125127-6abfa8cf69fa0.png\" width=\"528\" \/><\/p>\n<h3>\u4e09\u3001\u5236\u9020\u8bad\u7ec3\u6837\u672c&#xff1a;\u672c\u96c6\u7684\u6838\u5fc3<\/h3>\n<p>\u6570\u636e\u6d41\u7a0b&#xff1a;<\/p>\n<li>\u53d6 Keras \u81ea\u5e26 MNIST&#xff0c;\u5f52\u4e00\u5316\u5230 0\u20131&#xff0c;\u53ea\u4fdd\u7559\u6807\u7b7e\u4e3a 8 \u7684\u56fe&#xff1b;<\/li>\n<li>\u6bcf\u5f20\u56fe\u6269\u589e 100 \u4e2a\u8bad\u7ec3\u6837\u672c&#xff08;\u5168\u5957\u6570\u636e\u7ea6 6.4 GB&#xff09;&#xff1b;<\/li>\n<li>\u6bcf\u4e2a\u6837\u672c\u72ec\u7acb&#xff1a;\u4ece\u6807\u51c6\u6b63\u6001\u968f\u673a\u91c7\u566a\u58f0 \u03b5&#xff0c;\u4ece 1\u2013200 \u5747\u5300\u968f\u673a\u91c7\u65f6\u523b t&#xff0c;\u6309\u516c\u5f0f\u52a0\u6743\u6c42\u548c\u5f97\u5e26\u566a\u56fe x_t&#xff1b;<\/li>\n<li>\u8bad\u7ec3\u8f93\u5165 &#061; (x_t, t) \u4e00\u5bf9&#xff0c;\u76ee\u6807 &#061; \u90a3\u4e2a\u968f\u673a\u91c7\u51fa\u6765\u7684 \u03b5&#xff1b;<\/li>\n<li>\u635f\u5931 &#061; \u9884\u6d4b\u566a\u58f0\u4e0e\u771f\u5b9e\u566a\u58f0\u7684 MSE&#xff1a;L&#061;\u2225\u03b5\u2212\u03b5^\u03b8(xt,t)\u22252L&#061;\u2225\u03b5\u2212\u03b5^\u03b8\u200b(xt\u200b,t)\u22252\u3002<\/li>\n<p>\u53cd\u76f4\u89c9\u70b9\u5c31\u5728\u8fd9\u91cc&#xff1a;\u6a21\u578b\u8981\u9884\u6d4b\u7684\u76ee\u6807&#xff0c;\u662f\u4e00\u4e2a\u4eba\u5de5\u968f\u673a\u91c7\u51fa\u6765\u7684\u53d8\u91cf\u3002\u4f46\u8fd9\u6070\u6070\u662f\u8bad\u7ec3\u80fd\u6536\u655b\u7684\u539f\u56e0\u2014\u2014\u6bcf\u5f20\u771f\u5b9e\u56fe\u90fd\u5bf9\u5e94\u65e0\u6570\u4e2a&#034;\u5b83\u52a0\u4e86\u566a\u957f\u4ec0\u4e48\u6837&#034;\u7684\u6837\u672c&#xff0c;\u6570\u636e\u88ab\u51ed\u7a7a\u653e\u5927\u4e0a\u767e\u500d\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"477\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/10\/20261002125127-6abfa8cf74556.png\" width=\"477\" \/><\/p>\n<p>\u6700\u7ec8\u8f93\u51fa\u7531\u7535\u8111\u300c\u624b\u5199\u300d \u7684\u6570\u5b57\u516b&#xff01;<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"472\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/10\/20261002125127-6abfa8cf7f1c3.png\" width=\"472\" \/><\/p>\n<h3>\u56db\u3001\u4e24\u4e2a\u5173\u952e\u8ba4\u77e5<\/h3>\n<p>\u8ba4\u77e5\u4e00&#xff1a;\u5b66\u7684\u662f&#034;\u8fd8\u539f\u5f53\u521d\u52a0\u8fdb\u53bb\u7684\u566a\u58f0&#034;&#xff0c;\u800c\u566a\u58f0\u672c\u8eab\u662f\u968f\u673a\u7684\u3002\u6269\u6563\u6a21\u578b\u4e0d\u76f4\u63a5\u5b66&#034;\u6570\u5b57 8 \u957f\u4ec0\u4e48\u6837&#034;&#xff0c;\u5b83\u5b66\u7684\u662f\u4efb\u4f55\u65f6\u523b x_t \u91cc&#034;\u54ea\u90e8\u5206\u662f\u566a\u58f0\u3001\u8be5\u600e\u4e48\u6263\u6389&#034;\u3002<\/p>\n<p>\u8ba4\u77e5\u4e8c&#xff1a;\u6a21\u578b\u5e72\u7684\u5176\u5b9e\u662f\u4fe1\u606f\u5206\u79bb\u3002x_t \u91cc\u6df7\u7740\u56fe\u50cf\u4fe1\u53f7\u548c\u566a\u58f0\u4e24\u4efd\u4fe1\u606f&#xff0c;\u6a21\u578b\u672c\u8d28\u662f\u628a\u5b83\u4eec\u62c6\u5f00\u2014\u2014\u5c31\u50cf\u628a\u4e24\u4eba\u5408\u5531\u7684\u5f55\u97f3\u5206\u79bb\u6210\u4e24\u6761\u72ec\u7acb\u97f3\u8f68\u3002\u8fd9\u4e5f\u89e3\u91ca\u4e86\u4e3a\u4ec0\u4e48\u8f93\u51fa\u5fc5\u987b\u548c\u8f93\u5165\u540c\u5c3a\u5bf8&#xff1a;\u53ea\u6709\u540c\u5c3a\u5bf8\u624d\u80fd\u9010\u5143\u7d20\u51cf\u9664\u566a\u58f0\u3002<\/p>\n<h3>\u4e94\u3001U-Net&#xff1a;\u6269\u6563\u6a21\u578b\u7684&#034;\u5927\u8111&#034;<\/h3>\n<h4>U-Net \u4e0d\u662f\u5fc5\u9009\u9879&#xff0c;\u53ea\u662f\u7ecf\u5178\u5b9e\u73b0<\/h4>\n<p>\u8bba\u6587\u91cc\u53ea\u6709\u6570\u5b66\u516c\u5f0f\u5360\u4f4d\u7b26&#xff0c;\u6ca1\u89c4\u5b9a\u7f51\u7edc\u7ed3\u6784\u3002U-Net \u6700\u65e9\u4e3a\u56fe\u50cf\u5206\u5272\u8bbe\u8ba1&#xff1a;\u5148\u5377\u79ef\u6c60\u5316\u8d8a\u538b\u8d8a\u5c0f&#xff08;\u63d0\u8bed\u4e49&#xff09;&#xff0c;\u518d\u53cd\u5377\u79ef\u8d8a\u653e\u8d8a\u5927&#xff08;\u6062\u590d\u5206\u8fa8\u7387&#xff09;&#xff0c;\u5929\u7136\u6ee1\u8db3&#034;\u8f93\u5165\u52a0\u566a\u56fe\u3001\u8f93\u51fa\u540c\u5c3a\u5bf8\u566a\u58f0\u56fe&#034;\u3002\u5b83\u7684**\u8df3\u8dc3\u8fde\u63a5&#xff08;skip connection&#xff09;**\u628a\u7f16\u7801\u5668\u540c\u5c42\u7279\u5f81\u76f4\u63a5\u52a0\u5230\u89e3\u7801\u5668\u5bf9\u5e94\u5c42&#xff0c;\u8ba9\u53bb\u566a\u590d\u7528\u7ec6\u8282\u3002\u60f3\u6362\u7ed3\u6784\u5b8c\u5168\u53ef\u4ee5\u3002<\/p>\n<h4>\u6838\u5fc3\u8bbe\u8ba1&#xff1a;\u65f6\u95f4\u4fe1\u53f7\u600e\u4e48\u8fdb\u7f51\u7edc<\/h4>\n<p>\u6a21\u578b\u8981\u4ece x_t \u6062\u590d x_{t-1}&#xff0c;\u5c31\u5fc5\u987b\u77e5\u9053&#034;\u73b0\u5728\u662f\u7b2c\u51e0\u6b65 t&#034;\u3002\u672c\u96c6\u505a\u6cd5&#xff1a;<\/p>\n<li>\u628a\u65f6\u95f4 t \u505a\u6210 embedding&#xff0c;\u518d\u53d8\u6362\u6210\u4e00\u5f20 28\u00d728 \u7684&#034;\u65f6\u95f4\u56fe&#034;&#xff1b;<\/li>\n<li>\u4e0e\u52a0\u566a\u56fe \u9010\u50cf\u7d20\u76f8\u52a0\u2014\u2014\u56fe\u50cf\u540c\u65f6\u83b7\u5f97&#034;\u5185\u5bb9&#043;\u65f6\u95f4&#034;\u53cc\u91cd\u4fe1\u606f&#xff1b;<\/li>\n<li>\u4e4b\u540e\u6bcf\u5377\u79ef\u6c60\u5316\u4e00\u6b21&#xff08;\u5982\u7f29\u5230 14\u00d714\u300132 \u901a\u9053&#xff09;&#xff0c;\u65f6\u95f4\u56fe\u540c\u6b65\u6c60\u5316\u4fdd\u6301\u5c3a\u5bf8\u4e00\u81f4&#xff0c;\u7ee7\u7eed\u9010\u50cf\u7d20\u76f8\u52a0&#xff1b;<\/li>\n<li>\u94c1\u5f8b&#xff1a;\u9010\u50cf\u7d20\u76f8\u52a0\u7684\u524d\u63d0\u662f\u5c3a\u5bf8\u548c\u901a\u9053\u6570\u5bf9\u9f50\u3002<\/li>\n<p>\u4e00\u53e5\u8bdd&#xff1a;\u8fd9\u4e2a\u6a21\u578b\u5c31\u662f&#034;CNN &#043; \u65f6\u95f4&#034;\u3002<\/p>\n<h3>\u516d\u3001\u8bad\u7ec3\u4e0e\u53cd\u5411\u751f\u6210<\/h3>\n<p>\u8bad\u7ec3&#xff1a;\u8f93\u5165 (x_t, t)&#xff0c;\u8f93\u51fa\u9884\u6d4b\u566a\u58f0 \u03b5\u0302&#xff0c;MSE \u53cd\u5411\u4f20\u64ad\u3002GPU \u7ea6 1 \u5c0f\u65f6\u8bad\u5b8c&#xff0c;\u7eaf CPU \u7ea6\u4e94\u516d\u4e2a\u5c0f\u65f6\u3002<\/p>\n<p>\u751f\u6210&#xff08;\u628a\u8fc7\u7a0b\u5012\u7740\u653e&#xff09;&#xff1a;<\/p>\n<li>\u968f\u673a\u91c7\u4e00\u5f20\u7eaf\u566a\u58f0\u5f53\u4f5c x\u2082\u2080\u2080&#xff1b;<\/li>\n<li>\u4ece t&#061;200 \u8d70\u5230 t&#061;1&#xff0c;\u6bcf\u6b65\u628a x_t \u548c t \u5582\u7ed9 U-Net \u5f97 \u03b5\u0302&#xff0c;\u6309\u6807\u51c6 DDPM \u53cd\u63a8\u516c\u5f0f\u5f97\u5230 x_{t-1}&#xff1a;<\/li>\n<p>xt\u22121&#061;1\u03b1t(xt\u22121\u2212\u03b1t1\u2212\u03b1\u02c9t\u03b5^\u03b8(xt,t))&#043;\u03c3tz,z\u223cN(0,I)xt\u22121\u200b&#061;\u03b1t\u200b\u200b1\u200b(xt\u200b\u22121\u2212\u03b1\u02c9t\u200b\u200b1\u2212\u03b1t\u200b\u200b\u03b5^\u03b8\u200b(xt\u200b,t))&#043;\u03c3t\u200bz,z\u223cN(0,I)<\/p>\n<p>&#xff08;\u6700\u540e\u4e00\u6b65 t&#061;1\u21920 \u4e0d\u52a0\u968f\u673a\u566a\u58f0 z&#xff1b;\u03c3_t \u4e3a\u7531 schedule \u51b3\u5b9a\u7684\u56fa\u5b9a\u65b9\u5dee\u9879\u3002&#xff09;<\/p>\n<li>200 \u6b65\u8d70\u5b8c&#xff0c;\u96ea\u82b1\u5c4f\u91cc\u9010\u6e10\u6d6e\u73b0\u51fa\u624b\u5199\u98ce\u683c\u7684\u6570\u5b57 8\u3002<\/li>\n<p>\u6574\u6761\u94fe\u8def\u843d\u5230\u4ee3\u7801\u4e0a\u5c31\u4e09\u6bb5&#xff1a;\u9020\u8bad\u7ec3\u6570\u636e \u2192 \u642d U-Net \u2192 \u53cd\u5411\u91c7\u6837\u751f\u6210&#xff0c;\u6838\u5fc3\u4ee3\u7801\u51e0\u5341\u884c\u3002\u8bba\u6587\u6570\u5b66\u7b26\u53f7\u552c\u4eba&#xff0c;\u5b9e\u73b0\u672c\u8eab\u4e0d\u96be\u3002<\/p>\n<h3>\u4e03\u3001\u8def\u7ebf\u9009\u62e9&#xff1a;\u4ec0\u4e48\u65f6\u5019\u4ece\u96f6\u5199&#xff0c;\u4ec0\u4e48\u65f6\u5019\u7528\u73b0\u6210\u5e93<\/h3>\n<table>\n<tr>\u573a\u666f\u5efa\u8bae<\/tr>\n<tbody>\n<tr>\n<td>\u5b66\u4e60\u539f\u7406\u3001\u8bfe\u7a0b\u4f5c\u4e1a\u3001\u590d\u73b0\u6700\u5c0f\u95ed\u73af<\/td>\n<td>\u4ece\u96f6\u624b\u5199&#xff08;\u53ea\u751f\u62108\u3001T&#061;200\u3001CPU\u53ef\u8bad&#xff09;<\/td>\n<\/tr>\n<tr>\n<td>\u8981\u751f\u6210\u5168\u90e8 10 \u7c7b\u6570\u5b57\u3001\u6e05\u6670\u6548\u679c<\/td>\n<td>\u6269\u5927\u6570\u636e\u96c6 &#043; \u52a0\u6df1\u52a0\u5bbd U-Net &#043; \u66f4\u591a epoch<\/td>\n<\/tr>\n<tr>\n<td>\u751f\u4ea7\u7ea7\u6d77\u62a5\u7ea7\u56fe\u50cf<\/td>\n<td>\u76f4\u63a5\u7528 Hugging Face diffusers \u52a0\u8f7d\u9884\u8bad\u7ec3\u6a21\u578b&#xff0c;\u4e0d\u8981\u4ece\u96f6\u8bad<\/td>\n<\/tr>\n<tr>\n<td>\u60f3\u505a\u7814\u7a76\u53d1\u8bba\u6587<\/td>\n<td>\u4ece\u6362\u52a0\u566a schedule&#xff08;linear\u2192cosine&#xff09;\u5207\u5165&#xff0c;\u516c\u8ba4\u6613\u51fa\u6210\u679c<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>\u516b\u3001\u5e38\u89c1\u95ee\u9898 FAQ<\/h3>\n<p>Q1&#xff1a;\u4e3a\u4ec0\u4e48\u9884\u6d4b\u566a\u58f0\u800c\u4e0d\u662f\u76f4\u63a5\u9884\u6d4b\u6e05\u6670\u56fe&#xff1f; \u6570\u5b66\u4e0a\u53ef\u8bc1\u660e&#xff1a;\u9ad8\u65af\u52a0\u566a\u8bbe\u5b9a\u4e0b&#xff0c;\u9884\u6d4b&#034;\u8be5\u51cf\u53bb\u591a\u5c11\u566a\u58f0&#034;\u6bd4\u76f4\u63a5\u56de\u5f52 x\u2080 \u66f4\u5bb9\u6613\u5b66&#xff0c;\u4e14\u6bcf\u6b65\u90fd\u80fd\u7528\u540c\u4e00\u7f51\u7edc\u3001\u540c\u4e00 MSE \u8bad\u7ec3&#xff1b;\u9884\u6d4b\u566a\u58f0\u662f DDPM \u7684\u6838\u5fc3\u8bad\u7ec3\u76ee\u6807\u3002<\/p>\n<p>Q2&#xff1a;\u03b1_t \u548c \u1fb1_t \u6709\u4ec0\u4e48\u533a\u522b&#xff1f; \u03b1_t \u662f\u5355\u6b65\u4fdd\u7559\u7387&#xff08;\u672c\u96c6 0.99\u21920.9 \u7ebf\u6027\u8870\u51cf&#xff09;&#xff1b;\u1fb1_t \u662f \u03b1\u2081 \u5230 \u03b1_t \u7684\u8fde\u4e58\u7d2f\u79ef\u4fdd\u7559\u7387&#xff0c;\u8d8a\u4e58\u8d8a\u5c0f\u3002\u52a0\u566a\u516c\u5f0f\u91cc\u7528\u7684\u662f \u1fb1_t\u2014\u2014\u4ee3\u7801\u91cc\u6700\u5e38\u89c1\u7684\u4e0b\u6807\u5199\u9519\u70b9\u3002<\/p>\n<p>Q3&#xff1a;\u65f6\u95f4 t \u4e3a\u4ec0\u4e48\u5fc5\u987b\u8f93\u5165&#xff1f;\u4e0d\u4f20\u4f1a\u600e\u6837&#xff1f; \u4e0d\u540c\u566a\u58f0\u6d53\u5ea6\u9700\u8981\u4e0d\u540c\u53bb\u566a\u91cf&#xff0c;\u6a21\u578b\u4e0d\u77e5\u9053\u6b65\u6570\u5c31\u65e0\u6cd5\u5224\u65ad\u8be5\u53bb\u591a\u5c11\u566a&#xff0c;\u8bad\u7ec3\u65e0\u6cd5\u6536\u655b\u3002\u672c\u96c6\u505a\u6cd5\u662f\u628a t \u53d8\u6210 28\u00d728 \u65f6\u95f4\u56fe\u9010\u50cf\u7d20\u76f8\u52a0\u3002<\/p>\n<p>Q4&#xff1a;U-Net \u662f\u5fc5\u5907\u7ed3\u6784\u5417&#xff1f; \u4e0d\u662f\u3002\u4efb\u4f55\u8f93\u5165\u8f93\u51fa\u540c\u5c3a\u5bf8\u3001\u80fd\u9010\u50cf\u7d20\u9884\u6d4b\u7684\u7f51\u7edc\u90fd\u53ef\u4ee5&#xff1b;U-Net \u56e0\u5148\u538b\u7f29\u518d\u653e\u5927\u7684\u7ed3\u6784\u548c\u8df3\u8dc3\u8fde\u63a5\u6210\u4e3a\u6700\u5e38\u7528\u5b9e\u73b0\u3002<\/p>\n<p>Q5&#xff1a;\u4e3a\u4ec0\u4e48\u6bcf\u5f20\u56fe\u6269\u589e 100 \u4e2a\u6837\u672c&#xff1f; t \u548c \u03b5 \u90fd\u662f\u968f\u673a\u91c7\u6837\u7684&#xff0c;\u540c\u4e00\u539f\u56fe\u52a0\u4e0d\u540c\u566a\u58f0\u3001\u5728\u4e0d\u540c\u6b65\u6570\u4e0a\u6784\u6210\u65e0\u7a77\u591a\u6837\u672c&#xff1b;\u6269\u589e 100 \u500d\u8ba9\u6a21\u578b\u89c1\u5230&#034;\u540c\u4e00\u5185\u5bb9\u5728\u5404\u79cd\u566a\u58f0\u6d53\u5ea6\u4e0b&#034;\u7684\u6837\u5b50\u3002<\/p>\n<p>Q6&#xff1a;\u53cd\u5411\u751f\u6210\u516c\u5f0f\u662f\u4ec0\u4e48&#xff1f; x_{t-1} &#061; (1\/\u221a\u03b1_t)(x_t \u2212 (1\u2212\u03b1_t)\/\u221a(1\u2212\u1fb1_t)\u00b7\u03b5\u0302) &#043; \u03c3_t\u00b7z&#xff1b;\u6bcf\u6b65\u7528 U-Net \u9884\u6d4b\u566a\u58f0\u5e76\u6263\u6389&#xff0c;\u9664\u6700\u540e\u4e00\u6b65\u5916\u52a0\u56de\u5c0f\u968f\u673a\u566a\u58f0 z \u7ef4\u6301\u591a\u6837\u6027\u3002<\/p>\n<p>Q7&#xff1a;\u4e3a\u4ec0\u4e48\u4ece\u7eaf\u566a\u58f0\u5f00\u59cb&#xff1f; \u8bad\u7ec3\u65f6\u89c1\u8fc7\u6700\u5927 t \u5904 x_t\u2248\u7eaf\u566a\u58f0&#xff0c;\u4ece N(0,I) \u91c7\u6837\u6b63\u597d\u843d\u5728\u8bad\u7ec3\u5206\u5e03\u8fb9\u754c\u4e0a&#xff0c;\u53cd\u5411\u8d70\u4e00\u904d\u5c31\u662f\u5b8c\u6574\u53bb\u566a\u8def\u5f84\u3002<\/p>\n<p>Q8&#xff1a;\u6ca1\u6709 GPU \u80fd\u8dd1\u5417&#xff1f; \u80fd\u3002\u672c\u8bbe\u5b9a\u7eaf CPU \u7ea6 5\u20136 \u5c0f\u65f6&#xff1b;\u751f\u4ea7\u7ea7\u5927\u6a21\u578b\u624d\u5fc5\u987b GPU\u3002<\/p>\n<p>Q9&#xff1a;\u751f\u6210\u7684\u6570\u5b57\u6a21\u7cca\u4e0d\u50cf&#xff0c;\u901a\u5e38\u4ec0\u4e48\u539f\u56e0&#xff1f; \u8bad\u7ec3\u8f6e\u6570\u4e0d\u591f\u3001schedule \u4e0d\u5408\u7406\u3001U-Net \u5bb9\u91cf\u592a\u5c0f\u6216\u65f6\u95f4\u4fe1\u53f7\u6ca1\u6b63\u786e\u6ce8\u5165&#xff1b;\u5148\u770b\u8bad\u7ec3\u635f\u5931\u66f2\u7ebf\u548c\u4e2d\u95f4\u53bb\u566a\u8fc7\u7a0b\u53ef\u89c6\u5316\u5b9a\u4f4d\u3002<\/p>\n<p>Q10&#xff1a;\u6269\u6563\u6a21\u578b\u548c GAN \u6709\u4ec0\u4e48\u533a\u522b&#xff1f; GAN \u4e00\u6b21\u51fa\u56fe\u3001\u9760\u5224\u522b\u5668\u535a\u5f08&#xff0c;\u8bad\u7ec3\u4e0d\u7a33\u5b9a\u6613\u6a21\u5f0f\u5d29\u584c&#xff1b;\u6269\u6563\u6a21\u578b\u591a\u6b65\u53bb\u566a\u3001\u8bad\u7ec3\u7a33\u5b9a\u3001\u6837\u672c\u8986\u76d6\u5168&#xff0c;\u4ee3\u4ef7\u662f\u63a8\u7406\u6162&#xff08;200 \u6b65\u4e32\u884c&#xff09;\u3002<\/p>\n<p>Q11&#xff1a;\u4e3a\u4ec0\u4e48\u53ea\u751f\u6210\u6570\u5b57 8&#xff1f; \u6559\u5b66\u7b80\u5316&#xff1a;\u5355\u7c7b\u522b\u80fd\u628a\u6574\u6761\u94fe\u8def\u8dd1\u901a&#xff0c;\u800c\u4e0d\u5fc5\u5148\u89e3\u51b3\u591a\u7c7b\u522b\u6761\u4ef6\u63a7\u5236\u8fd9\u4e2a\u66f4\u590d\u6742\u7684\u95ee\u9898\u3002<\/p>\n<p>Q12&#xff1a;\u6362\u52a0\u566a schedule \u4e3a\u4ec0\u4e48\u80fd\u53d1\u8bba\u6587&#xff1f; \u52a0\u566a\u8282\u594f\u51b3\u5b9a\u8bad\u7ec3\u4fe1\u53f7\u5206\u5e03\u548c\u91c7\u6837\u6548\u7387&#xff0c;\u7ebf\u6027 schedule \u53ea\u662f\u4f17\u591a\u65b9\u6848\u4e4b\u4e00&#xff1b;\u66f4\u4f18 schedule \u80fd\u5728\u66f4\u5c11\u6b65\u6570\u4e0b\u5f97\u5230\u66f4\u597d\u6548\u679c&#xff0c;\u662f\u6269\u6563\u7814\u7a76\u7684\u7ecf\u5178\u5207\u5165\u70b9\u3002<\/p>\n<h3>\u4e5d\u3001\u5e38\u89c1\u95ee\u9898\u6392\u67e5\u6307\u5357<\/h3>\n<p>\u524d\u9762 FAQ \u56de\u7b54\u4e86\u539f\u7406\u5c42\u9762\u7684\u7591\u95ee&#xff0c;\u8fd9\u4e00\u8282\u805a\u7126\u5b9e\u6218\u4e2d\u6700\u5bb9\u6613\u5361\u4f4f\u7684\u4e09\u7c7b\u95ee\u9898&#xff1a;\u8bad\u7ec3\u4e0d\u6536\u655b\u3001\u751f\u6210\u56fe\u50cf\u6a21\u7cca\u3001\u663e\u5b58\u4e0d\u8db3\u3002\u4e0b\u9762\u6309\u300c\u73b0\u8c61 \u2192 \u539f\u56e0 \u2192 \u89e3\u51b3\u6b65\u9aa4\u300d\u7ed9\u51fa\u53ef\u64cd\u4f5c\u7684\u6392\u67e5\u8def\u5f84\u3002<\/p>\n<h4>\u95ee\u9898\u4e00&#xff1a;\u8bad\u7ec3\u4e0d\u6536\u655b&#xff08;\u635f\u5931\u4e0d\u4e0b\u964d\u6216\u9707\u8361&#xff09;<\/h4>\n<p>\u5178\u578b\u73b0\u8c61&#xff1a;\u8bad\u7ec3\u591a\u8f6e\u540e MSE \u635f\u5931\u66f2\u7ebf\u51e0\u4e4e\u6c34\u5e73&#xff0c;\u6216\u4e0a\u4e0b\u5267\u70c8\u9707\u8361\u4e0d\u4e0b\u964d&#xff1b;\u53cd\u5411\u751f\u6210\u65f6\u8f93\u51fa\u4ecd\u662f\u7eaf\u566a\u58f0\u6216\u5927\u7247\u7070\u5757\u3002<\/p>\n<p>\u53ef\u80fd\u539f\u56e0\u4e0e\u89e3\u51b3\u6b65\u9aa4&#xff1a;<\/p>\n<li>\u5b66\u4e60\u7387\u8bbe\u7f6e\u4e0d\u5f53&#xff1a;\u5b66\u4e60\u7387\u8fc7\u5927\u5bfc\u81f4\u9707\u8361&#xff0c;\u8fc7\u5c0f\u5bfc\u81f4\u4e0b\u964d\u6781\u6162\u3002\u5efa\u8bae\u5148\u7528 1e-4 \u8d77\u6b65&#xff0c;\u89c2\u5bdf\u524d 500 \u6b65\u635f\u5931\u53d8\u5316&#xff0c;\u518d\u6309 0.5 \u500d\u6216 2 \u500d\u6b65\u957f\u5fae\u8c03\u3002<\/li>\n<li>\u65f6\u95f4\u4fe1\u53f7\u672a\u6b63\u786e\u6ce8\u5165&#xff1a;\u5982\u679c t \u6ca1\u6709\u53d8\u6210\u65f6\u95f4\u56fe\u9010\u50cf\u7d20\u76f8\u52a0&#xff0c;\u6216\u5c3a\u5bf8\u901a\u9053\u6ca1\u5bf9\u9f50&#xff0c;\u6a21\u578b\u65e0\u6cd5\u533a\u5206\u566a\u58f0\u6d53\u5ea6\u3002\u68c0\u67e5\u65f6\u95f4\u56fe\u662f\u5426\u4e0e\u52a0\u566a\u56fe\u540c\u5c3a\u5bf8\u3001\u540c\u901a\u9053\u6570&#xff0c;\u5e76\u786e\u8ba4\u76f8\u52a0\u53d1\u751f\u5728\u6bcf\u6b21\u5377\u79ef\u6c60\u5316\u4e4b\u540e\u3002<\/li>\n<li>\u52a0\u566a schedule \u8fc7\u6fc0&#xff1a;\u03b1 \u4ece 0.99 \u7ebf\u6027\u8870\u51cf\u5230 0.9 \u662f\u672c\u6587\u8bbe\u5b9a&#xff1b;\u82e5\u8870\u51cf\u8fc7\u5feb&#xff0c;\u540e\u671f\u6837\u672c\u51e0\u4e4e\u5168\u662f\u566a\u58f0&#xff0c;\u6a21\u578b\u96be\u4ee5\u5b66\u4e60\u3002\u53ef\u5c1d\u8bd5\u628a\u4e0b\u9650\u8c03\u5230 0.95&#xff0c;\u6216\u6539\u7528\u4f59\u5f26 schedule\u3002<\/li>\n<li>\u6570\u636e\u5f52\u4e00\u5316\u9057\u6f0f&#xff1a;\u50cf\u7d20\u5fc5\u987b\u5f52\u4e00\u5316\u5230 0\u20131 \u518d\u53c2\u4e0e\u52a0\u566a\u516c\u5f0f&#xff1b;\u82e5\u76f4\u63a5\u7528 0\u2013255 \u6574\u6570&#xff0c;\u6570\u503c\u5c3a\u5ea6\u4e0d\u5339\u914d\u4f1a\u5bfc\u81f4\u68af\u5ea6\u5f02\u5e38\u3002\u6253\u5370 x_t \u7684\u6570\u503c\u8303\u56f4\u786e\u8ba4\u3002<\/li>\n<li>\u635f\u5931\u51fd\u6570\u5199\u9519&#xff1a;\u786e\u8ba4\u662f\u9884\u6d4b\u566a\u58f0 \u03b5\u0302 \u4e0e\u771f\u5b9e\u566a\u58f0 \u03b5 \u7684 MSE&#xff0c;\u800c\u4e0d\u662f\u9884\u6d4b\u56fe\u50cf\u4e0e\u771f\u5b9e\u56fe\u50cf\u7684 MSE\u3002\u4e24\u8005\u8bad\u7ec3\u76ee\u6807\u4e0d\u540c&#xff0c;\u5199\u9519\u4f1a\u5bfc\u81f4\u6536\u655b\u5230\u9519\u8bef\u65b9\u5411\u3002<\/li>\n<h4>\u95ee\u9898\u4e8c&#xff1a;\u751f\u6210\u56fe\u50cf\u6a21\u7cca\u3001\u4e0d\u50cf\u6570\u5b57 8<\/h4>\n<p>\u5178\u578b\u73b0\u8c61&#xff1a;\u53cd\u5411\u751f\u6210 200 \u6b65\u540e&#xff0c;\u8f93\u51fa\u80fd\u770b\u51fa\u8f6e\u5ed3\u4f46\u8fb9\u7f18\u6a21\u7cca&#xff0c;\u6216\u5f62\u72b6\u4e0d\u50cf\u6570\u5b57 8\u3002<\/p>\n<p>\u53ef\u80fd\u539f\u56e0\u4e0e\u89e3\u51b3\u6b65\u9aa4&#xff1a;<\/p>\n<li>\u8bad\u7ec3\u8f6e\u6570\u4e0d\u8db3&#xff1a;\u672c\u6587\u8bbe\u5b9a GPU \u7ea6 1 \u5c0f\u65f6\u3001CPU \u7ea6 5\u20136 \u5c0f\u65f6&#xff1b;\u82e5\u63d0\u524d\u4e2d\u65ad&#xff0c;\u6a21\u578b\u8fd8\u6ca1\u5b66\u591f\u3002\u5148\u770b\u635f\u5931\u662f\u5426\u4ecd\u5728\u4e0b\u964d&#xff0c;\u662f\u5219\u7ee7\u7eed\u8bad\u7ec3\u3002<\/li>\n<li>U-Net \u5bb9\u91cf\u504f\u5c0f&#xff1a;\u901a\u9053\u6570\u592a\u5c11\u6216\u5c42\u6570\u4e0d\u591f&#xff0c;\u6a21\u578b\u8868\u8fbe\u80fd\u529b\u4e0d\u8db3\u3002\u53ef\u5c1d\u8bd5\u628a\u9996\u5c42\u901a\u9053\u4ece 32 \u52a0\u5230 64&#xff0c;\u6216\u589e\u52a0\u4e00\u5c42\u4e0b\u91c7\u6837\/\u4e0a\u91c7\u6837\u3002<\/li>\n<li>\u65f6\u95f4\u4fe1\u53f7\u6ce8\u5165\u4e0d\u5145\u5206&#xff1a;\u5982\u679c\u53ea\u5728\u6700\u5916\u5c42\u52a0\u4e86\u4e00\u6b21\u65f6\u95f4\u56fe&#xff0c;\u6df1\u5c42\u5377\u79ef\u540e\u65f6\u95f4\u4fe1\u606f\u88ab\u7a00\u91ca\u3002\u786e\u4fdd\u6bcf\u5c42\u6c60\u5316\u540e\u90fd\u540c\u6b65\u6c60\u5316\u65f6\u95f4\u56fe\u5e76\u9010\u50cf\u7d20\u76f8\u52a0\u3002<\/li>\n<li>\u53cd\u5411\u91c7\u6837\u6b65\u6570\u4e0d\u8db3&#xff1a;\u8bad\u7ec3\u7528 T&#061;200&#xff0c;\u91c7\u6837\u4e5f\u5e94\u8d70\u6ee1 200 \u6b65&#xff1b;\u82e5\u53ea\u91c7\u6837 50 \u6b65&#xff0c;\u53bb\u566a\u4e0d\u5f7b\u5e95\u4f1a\u6a21\u7cca\u3002\u786e\u8ba4\u91c7\u6837\u5faa\u73af\u4ece t&#061;200 \u8d70\u5230 t&#061;1\u3002<\/li>\n<li>\u6700\u540e\u4e00\u6b65\u5904\u7406\u9519\u8bef&#xff1a;t&#061;1\u21920 \u8fd9\u4e00\u6b65\u4e0d\u5e94\u52a0\u968f\u673a\u566a\u58f0 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