{"id":987,"date":"2022-01-05T20:55:19","date_gmt":"2022-01-05T12:55:19","guid":{"rendered":"http:\/\/139.9.1.231\/?p=987"},"modified":"2022-01-05T20:55:20","modified_gmt":"2022-01-05T12:55:20","slug":"gan1","status":"publish","type":"post","link":"http:\/\/139.9.1.231\/index.php\/2022\/01\/05\/gan1\/","title":{"rendered":"GAN\u7cfb\u5217\u4e4b\u7ecf\u5178GAN\uff08\u4e00\uff09"},"content":{"rendered":"\n<p>reference\uff1a<\/p>\n\n\n\n<p class=\"has-small-font-size\"><a href=\"https:\/\/zhuanlan.zhihu.com\/p\/78777020\">https:\/\/zhuanlan.zhihu.com\/p\/78777020<\/a><\/p>\n\n\n\n<p class=\"has-small-font-size\"><a href=\"https:\/\/zhuanlan.zhihu.com\/p\/28853704\">https:\/\/zhuanlan.zhihu.com\/p\/28853704<\/a><\/p>\n\n\n\n<p> GAN\u5168\u79f0\uff1a<em>Generative Adversarial Network<\/em> \u5373\u751f\u6210\u5bf9\u6297\u7f51\u7edc\uff0c\u7531Ian J. Goodfellow\u7b49\u4eba\u4e8e2014\u5e7410\u6708\u53d1\u8868\u5728NIPS\u5927\u4f1a\u4e0a\u7684\u8bba\u6587\u300aGenerative Adversarial Nets\u300b\u4e2d\u63d0\u51fa\u3002\u6b64\u540e\u5404\u79cd\u82b1\u5f0f\u53d8\u4f53Pix2Pix\u3001CYCLEGAN\u3001STARGAN\u3001StyleGAN\u7b49\u5c42\u51fa\u4e0d\u7a77\uff0c\u5728\u201c\u6362\u8138\u201d\u3001\u201c\u6362\u8863\u201d\u3001\u201c\u6362\u5929\u5730\u201d\u7b49\u5e94\u7528\u573a\u666f\u4e0b\u751f\u6210\u7684\u56fe\u50cf\u3001\u89c6\u9891\u4ee5\u5047\u4e71\u771f\uff0c\u597d\u4e0d\u70ed\u95f9\u3002\u524d\u6bb5\u65f6\u95f4PaddleGAN\u5b9e\u73b0\u7684First Order Motion\u8868\u60c5\u8fc1\u79fb\u6a21\u578b\uff0c\u80fd\u7528\u4e00\u5f20\u7167\u7247\u751f\u6210\u4e00\u6bb5\u5531\u6b4c\u89c6\u9891\u3002\u5404\u79cd\u641e\u7b11\u9b3c\u755c\u89c6\u9891\u706b\u904d\u5168\u7f51\u3002\u7528\u7684\u5c31\u662f\u4e00\u79cdGAN\u6a21\u578b\u54e6\u3002\u6df1\u5ea6\u5b66\u4e60\u4e09\u5de8\u795e\u4e4b\u4e00\u7684LeCun\u4e5f\u5bf9GAN\u5927\u52a0\u8d5e\u8d4f\uff0c\u79f0\u201cadversarial training is the coolest thing since sliced bread\u201d\u3002<\/p>\n\n\n\n<p>\u5bf9\u6297\u751f\u6210\u6a21\u578bGAN\u9996\u5148\u662f\u4e00\u4e2a\u751f\u6210\u6a21\u578b\uff0c\u548c\u5927\u5bb6\u6bd4\u8f83\u719f\u6089\u7684\u3001\u7528\u4e8e\u5206\u7c7b\u7684\u5224\u522b\u6a21\u578b\u4e0d\u540c\u3002<\/p>\n\n\n\n<p>       \u5224\u522b\u6a21\u578b\u7684\u6570\u5b66\u8868\u793a\u662fy=f(x),\u4e5f\u53ef\u4ee5\u8868\u793a\u4e3a\u6761\u4ef6\u6982\u7387\u5206\u5e03p(y|x)\u3002\u5f53\u8f93\u5165\u4e00\u5f20\u8bad\u7ec3\u96c6\u56fe\u7247x\u65f6\uff0c\u5224\u522b\u6a21\u578b\u8f93\u51fa\u5206\u7c7b\u6807\u7b7ey\u3002\u6a21\u578b\u5b66\u4e60\u7684\u662f\u8f93\u5165\u56fe\u7247x\u4e0e\u8f93\u51fa\u7684\u7c7b\u522b\u6807\u7b7e\u7684\u6620\u5c04\u5173\u7cfb\u3002\u5373\u5b66\u4e60\u7684\u76ee\u7684\u662f\u5728\u8f93\u5165\u56fe\u7247x\u7684\u6761\u4ef6\u4e0b\uff0c\u5c3d\u91cf\u589e\u5927\u6a21\u578b\u8f93\u51fa\u5206\u7c7b\u6807\u7b7ey\u7684\u6982\u7387\u3002<\/p>\n\n\n\n<p>       \u800c\u751f\u6210\u6a21\u578b\u7684\u6570\u5b66\u8868\u793a\u662f\u6982\u7387\u5206\u5e03p(x)\u3002\u6ca1\u6709\u7ea6\u675f\u6761\u4ef6\u7684\u751f\u6210\u6a21\u578b\u662f\u65e0\u76d1\u7763\u6a21\u578b\uff0c\u5c06\u7ed9\u5b9a\u7684\u7b80\u5355\u5148\u9a8c\u5206\u5e03\u03c0(z)\uff08\u901a\u5e38\u662f\u9ad8\u65af\u5206\u5e03\uff09\uff0c\u6620\u5c04\u4e3a\u8bad\u7ec3\u96c6\u56fe\u7247\u7684\u50cf\u7d20\u6982\u7387\u5206\u5e03p(x)\uff0c\u5373\u8f93\u51fa\u4e00\u5f20\u670d\u4ecep(x)\u5206\u5e03\u7684\u5177\u6709\u8bad\u7ec3\u96c6\u7279\u5f81\u7684\u56fe\u7247\u3002\u6a21\u578b\u5b66\u4e60\u7684\u662f\u5148\u9a8c\u5206\u5e03\u03c0(z)\u4e0e\u8bad\u7ec3\u96c6\u50cf\u7d20\u6982\u7387\u5206\u5e03p(x)\u7684\u6620\u5c04\u5173\u7cfb\u3002<\/p>\n\n\n\n<p>       \u751f\u6210\u5bf9\u6297\u7f51\u7edc\u4e00\u822c\u7531\u4e00\u4e2a\u751f\u6210\u5668\uff08\u751f\u6210\u7f51\u7edc\uff09\uff0c\u548c\u4e00\u4e2a\u5224\u522b\u5668\uff08\u5224\u522b\u7f51\u7edc\uff09\u7ec4\u6210\u3002\u751f\u6210\u5668\u7684\u4f5c\u7528\u662f\uff0c\u901a\u8fc7\u5b66\u4e60\u8bad\u7ec3\u96c6\u6570\u636e\u7684\u7279\u5f81\uff0c\u5728\u5224\u522b\u5668\u7684\u6307\u5bfc\u4e0b\uff0c\u5c06\u968f\u673a\u566a\u58f0\u5206\u5e03\u5c3d\u91cf\u62df\u5408\u4e3a\u8bad\u7ec3\u6570\u636e\u7684\u771f\u5b9e\u5206\u5e03\uff0c\u4ece\u800c\u751f\u6210\u5177\u6709\u8bad\u7ec3\u96c6\u7279\u5f81\u7684\u76f8\u4f3c\u6570\u636e\u3002\u800c\u5224\u522b\u5668\u5219\u8d1f\u8d23\u533a\u5206\u8f93\u5165\u7684\u6570\u636e\u662f\u771f\u5b9e\u7684\u8fd8\u662f\u751f\u6210\u5668\u751f\u6210\u7684\u5047\u6570\u636e\uff0c\u5e76\u53cd\u9988\u7ed9\u751f\u6210\u5668\u3002\u4e24\u4e2a\u7f51\u7edc\u4ea4\u66ff\u8bad\u7ec3\uff0c\u80fd\u529b\u540c\u6b65\u63d0\u9ad8\uff0c\u76f4\u5230\u751f\u6210\u7f51\u7edc\u751f\u6210\u7684\u6570\u636e\u80fd\u591f\u4ee5\u5047\u4e71\u771f\uff0c\u5e76\u4e0e\u4e0e\u5224\u522b\u7f51\u7edc\u7684\u80fd\u529b\u8fbe\u5230\u4e00\u5b9a\u5747\u8861\u3002<\/p>\n\n\n\n<h2>GAN\u7684\u672c\u8d28<\/h2>\n\n\n\n<p>        \u5176\u5b9eGAN\u6a21\u578b\u4ee5\u53ca\u6240\u6709\u7684\u751f\u6210\u6a21\u578b\u90fd\u4e00\u6837\uff0c\u505a\u7684\u4e8b\u60c5\u53ea\u6709\u4e00\u4ef6\uff1a\u62df\u5408\u8bad\u7ec3\u6570\u636e\u7684\u5206\u5e03\u3002\u5bf9\u56fe\u7247\u751f\u6210\u4efb\u52a1\u6765\u8bf4\u5c31\u662f\u62df\u5408\u8bad\u7ec3\u96c6\u56fe\u7247\u7684\u50cf\u7d20\u6982\u7387\u5206\u5e03\u3002\u4e0b\u9762\u6211\u4eec\u4ece\u539f\u7406\u7684\u89d2\u5ea6\u6f14\u793a\u4e00\u4e0bGAN\u7684\u8bad\u7ec3\u8fc7\u7a0b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-style-default\"><img loading=\"lazy\" width=\"820\" height=\"280\" src=\"http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/01\/image-90.png\" alt=\"\" class=\"wp-image-1385\" srcset=\"http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/01\/image-90.png 820w, http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/01\/image-90-300x102.png 300w, http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/01\/image-90-768x262.png 768w\" sizes=\"(max-width: 820px) 100vw, 820px\" \/><\/figure>\n\n\n\n<p>\u4e0a\u56fe\u4e2d\uff1a \u9ed1\u8272\u70b9\u7ebf\u4e3a\u8bad\u7ec3\u96c6\u6570\u636e\u5206\u5e03\u66f2\u7ebf \u84dd\u8272\u70b9\u7ebf\u4e3a\u5224\u522b\u5668\u8f93\u51fa\u7684\u5206\u5e03\u66f2\u7ebf \u7eff\u8272\u5b9e\u7ebf\u4e3a\u751f\u6210\u5668\u8f93\u51fa\u7684\u5206\u5e03\u66f2\u7ebf z\u5c55\u793a\u7684\u662f\u751f\u6210\u5668\u6620\u5c04\u524d\u7684\u7b80\u5355\u6982\u7387\u5206\u5e03\uff08\u4e00\u822c\u662f\u9ad8\u65af\u5206\u5e03\uff09\u7684\u8303\u56f4\u548c\u5bc6\u5ea6 x\u5c55\u793a\u7684\u662f\u751f\u6210\u5668\u6620\u5c04\u540e\u5b66\u5230\u7684\u8bad\u7ec3\u96c6\u7684\u6982\u7387\u5206\u5e03\u7684\u8303\u56f4\u548c\u5bc6\u5ea6&nbsp;<em>\uff08a\uff09\u5224\u522b\u5668\u4e0e\u751f\u6210\u5668\u5747\u672a\u8bad\u7ec3\u5448\u968f\u673a\u5206\u5e03&nbsp;<\/em>\uff08b\uff09\u5224\u522b\u5668\u7ecf\u8fc7\u8bad\u7ec3\uff0c\u8f93\u51fa\u7684\u5206\u5e03\u5728\u9760\u8fd1\u8bad\u7ec3\u96c6\u201c\u771f\u201d\u6570\u636e\u5206\u5e03\u7684\u533a\u95f4\u8d8b\u8fd1\u4e8e1\uff08\u771f\uff09\uff0c\u5728\u9760\u8fd1\u751f\u6210\u5668\u751f\u6210\u7684\u201c\u5047\u201d\u6570\u636e\u5206\u5e03\u7684\u533a\u95f4\u8d8b\u8fd1\u4e8e0\uff08\u5047\uff09&nbsp;<em>\uff08c\uff09\u751f\u6210\u5668\u6839\u636e\u5224\u522b\u5668\u8f93\u51fa\u7684\uff08\u771f\u5047\uff09\u5206\u5e03\uff0c\u66f4\u65b0\u53c2\u6570\uff0c\u4f7f\u81ea\u5df1\u7684\u8f93\u51fa\u5206\u5e03\u8d8b\u8fd1\u4e8e\u8bad\u7ec3\u96c6\u201c\u771f\u201d\u6570\u636e\u7684\u5206\u5e03\u3002 \u7ecf\u8fc7\uff08b\uff09\uff08c\uff09\uff08b\uff09\uff08c\uff09&#8230;\u6b65\u9aa4\u7684\u5faa\u73af\u4ea4\u66ff\u3002\u5224\u522b\u5668\u7684\u8f93\u51fa\u5206\u5e03\u968f\u7740\u751f\u6210\u5668\u8f93\u51fa\u7684\u5206\u5e03\u4e0e\u8bad\u7ec3\u96c6\u5206\u5e03\u7684\u63a5\u8fd1\u800c\u66f4\u52a0\u5e73\u7f13\uff1b\u751f\u6210\u5668\u8f93\u51fa\u7684\u5206\u5e03\u5219\u5728\u5224\u522b\u5668\u8f93\u51fa\u5206\u5e03\u7684\u6307\u5f15\u4e0b\u9010\u6e10\u8d8b\u8fd1\u4e8e\u8bad\u7ec3\u96c6\u201c\u771f\u201d\u6570\u636e\u7684\u5206\u5e03\u3002&nbsp;<\/em>\uff08d\uff09\u8bad\u7ec3\u5b8c\u6210\u65f6\uff0c\u751f\u6210\u5668\u8f93\u51fa\u7684\u5206\u5e03\u5b8c\u7f8e\u62df\u5408\u4e86\u8bad\u7ec3\u96c6\u6570\u636e\u7684\u5206\u5e03\uff0c\u5224\u522b\u5668\u7684\u8f93\u51fa\u7531\u4e8e\u751f\u6210\u5668\u7684\u5b8c\u7f8e\u62df\u5408\u800c\u65e0\u6cd5\u5224\u522b\u751f\u6210\u5668\u8f93\u51fa\u7684\u771f\u4f2a\u800c\u5448\u4e00\u6761\u53d6\u503c\u7ea6\u4e3a0.5\uff08\u771f\u5047\u4e4b\u95f4\uff09\u7684\u76f4\u7ebf\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-style-default\"><img loading=\"lazy\" width=\"1024\" height=\"462\" src=\"http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/01\/image-91-1024x462.png\" alt=\"\" class=\"wp-image-1388\" srcset=\"http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/01\/image-91-1024x462.png 1024w, http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/01\/image-91-300x135.png 300w, http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/01\/image-91-768x347.png 768w, http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/01\/image-91.png 1096w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<h2>GAN\u7684\u7ec4\u6210<\/h2>\n\n\n\n<ol><li>\u89e3\u8bfbGAN\u7684loss\u51fd\u6570<\/li><\/ol>\n\n\n\n<p>GAN\u7f51\u7edc\u7684\u8bad\u7ec3\u4f18\u5316\u76ee\u6807\u5c31\u662f\u5982\u4e0b\u516c\u5f0f\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-style-default\"><img loading=\"lazy\" width=\"834\" height=\"114\" src=\"http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/01\/image-92.png\" alt=\"\" class=\"wp-image-1389\" srcset=\"http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/01\/image-92.png 834w, http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/01\/image-92-300x41.png 300w, http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/01\/image-92-768x105.png 768w, http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/01\/image-92-825x114.png 825w\" sizes=\"(max-width: 834px) 100vw, 834px\" \/><\/figure>\n\n\n\n<p>\u516c\u5f0f\u51fa\u81eaGoodfellow\u57282014\u5e74\u53d1\u8868\u7684\u8bba\u6587Generative Adversarial Nets\u3002\u8fd9\u91cc\u7b80\u5355\u4ecb\u7ecd\u4e0b\u516c\u5f0f\u7684\u542b\u4e49\u548c\u5982\u4f55\u5e94\u7528\u5230\u4ee3\u7801\u4e2d\u3002\u4e0a\u5f0f\u4e2d\u7b49\u53f7\u5de6\u8fb9\u7684\u90e8\u5206\uff1a V(D,G)\u8868\u793a\u7684\u662f\u751f\u6210\u6837\u672c\u548c\u771f\u5b9e\u6837\u672c\u7684\u5dee\u5f02\u5ea6\uff0c\u53ef\u4ee5\u4f7f\u7528\u4e8c\u5206\u7c7b\uff08\u771f\u3001\u5047\u4e24\u4e2a\u7c7b\u522b\uff09\u7684\u4ea4\u53c9\u71b5\u635f\u5931\u3002<\/p>\n\n\n\n<p>maxV(D, G)\u8868\u793a\u5728\u751f\u6210\u5668\u56fa\u5b9a\u7684\u60c5\u51b5\u4e0b\uff0c\u901a\u8fc7\u6700\u5927\u5316\u4ea4\u53c9\u71b5\u635f\u5931V(D,G)\u6765\u66f4\u65b0\u5224\u522b\u5668D\u7684\u53c2\u6570\u3002<\/p>\n\n\n\n<p>min maxV(D, G)\u8868\u793a\u751f\u6210\u5668\u8981\u5728\u5224\u522b\u5668\u6700\u5927\u5316\u771f\u3001\u5047\u56fe\u7247\u4ea4\u53c9\u71b5\u635f\u5931V(D,G)\u7684\u60c5\u51b5\u4e0b\uff0c\u6700\u5c0f\u5316\u8fd9\u4e2a\u4ea4\u53c9\u71b5\u635f\u5931<\/p>\n\n\n\n<p>\u9996\u5148\u56fa\u5b9aG\u8bad\u7ec3D \uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image is-style-default\"><img src=\"https:\/\/pic3.zhimg.com\/v2-474547ca59dd2737f0c4a8833f4ffcde_r.jpg\" alt=\"\"\/><\/figure>\n\n\n\n<p>1\uff09\u8bad\u7ec3D\u7684\u76ee\u7684\u662f\u5e0c\u671b\u8fd9\u4e2a\u5f0f\u5b50\u7684\u503c\u8d8a\u5927\u8d8a\u597d\u3002\u771f\u5b9e\u6570\u636e\u5e0c\u671b\u88abD\u5206\u62101\uff0c\u751f\u6210\u6570\u636e\u5e0c\u671b\u88ab\u5206\u62100\u3002<\/p>\n\n\n\n<p>\u7b2c\u4e00\u9879\uff0c\u5982\u679c\u6709\u4e00\u4e2a\u771f\u5b9e\u6570\u636e\u88ab\u5206\u9519\uff0c\u90a3\u4e48log(D(x))&lt;&lt;0,\u671f\u671b\u4f1a\u53d8\u6210\u8d1f\u65e0\u7a77\u5927\u3002<\/p>\n\n\n\n<p>\u7b2c\u4e8c\u9879\uff0c\u5982\u679c\u88ab\u5206\u9519\u62101\u7684\u8bdd\uff0c\u7b2c\u4e8c\u9879\u4e5f\u4f1a\u662f\u8d1f\u65e0\u7a77\u5927\u3002<\/p>\n\n\n\n<p>\u5f88\u591a\u88ab\u5206\u9519\u7684\u8bdd\uff0c\u5c31\u4f1a\u51fa\u73b0\u5f88\u591a\u8d1f\u65e0\u7a77\uff0c\u90a3\u6837\u53ef\u4ee5\u4f18\u5316\u7684\u7a7a\u95f4\u8fd8\u6709\u5f88\u591a\u3002\u53ef\u4ee5\u4fee\u6b63\u53c2\u6570\uff0c\u4f7fV\u7684\u6570\u503c\u589e\u5927\u3002<\/p>\n\n\n\n<p>2\uff09\u8bad\u7ec3G 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alt=\"\"\/><\/figure>\n\n\n\n<p>\u7b2c\u4e8c\u4e2a\u5f0f\u5b50\u548c\u7b2c\u4e00\u4e2a\u5f0f\u5b50\u7b49\u4ef7\u3002\u5728\u8bad\u7ec3\u7684\u65f6\u5019\uff0c\u7b2c\u4e8c\u4e2a\u5f0f\u5b50\u8bad\u7ec3\u6548\u679c\u6bd4\u8f83\u597d \u5e38\u7528\u7b2c\u4e8c\u4e2a\u5f0f\u5b50\u7684\u5f62\u5f0f\u3002<\/p>\n\n\n\n<p>\u8bc1\u660eV\u662f\u53ef\u4ee5\u6536\u655b\u5bfc\u6700\u4f73\u89e3\u7684\u3002<\/p>\n\n\n\n<p>\uff081\uff09global optimum \u5b58\u5728<\/p>\n\n\n\n<p>\uff082\uff09global optimum\u8bad\u7ec3\u8fc7\u7a0b\u6536\u655b<\/p>\n\n\n\n<p>\u5168\u5c40\u4f18\u5316\u9996\u5148\u56fa\u5b9aG\u4f18\u5316D\uff0cD\u7684\u6700\u4f73\u60c5\u51b5\u4e3a\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image is-style-default\"><img src=\"https:\/\/pic4.zhimg.com\/v2-7f5a66fc499330b3e964b81bd6f7ae9b_r.jpg\" alt=\"\"\/><\/figure>\n\n\n\n<p>1\u3001\u8bc1\u660eD*G(x)\u662f\u6700\u4f18\u89e3<\/p>\n\n\n\n<p>\u7531\u4e8eV\u662f\u8fde\u7eed\u7684\u6240\u4ee5\u53ef\u4ee5\u5199\u6210\u79ef\u5206\u7684\u5f62\u5f0f\u6765\u8868\u793a\u671f\u671b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image is-style-default\"><img src=\"https:\/\/pic1.zhimg.com\/v2-3f2b140b1075b920a403c700ac1f660c_r.jpg\" alt=\"\"\/><\/figure>\n\n\n\n<p>\u901a\u8fc7\u5047\u8bbex=G(z)\u53ef\u9006\u8fdb\u884c\u4e86\u53d8\u91cf\u66ff\u6362\uff0c\u6574\u7406\u5f0f\u5b50\u540e\u5f97\u5230\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image is-style-default\"><img src=\"https:\/\/pic2.zhimg.com\/v2-d4df9e304cf126fd0692e4ae8d2f3679_r.jpg\" alt=\"\"\/><\/figure>\n\n\n\n<p>\u7136\u540e\u5bf9V(G,D)\u8fdb\u884c\u6700\u5927\u5316\uff1a\u5bf9D\u8fdb\u884c\u4f18\u5316\u4ee4V\u53d6\u6700\u5927<\/p>\n\n\n\n<figure class=\"wp-block-image is-style-default\"><img src=\"https:\/\/pic1.zhimg.com\/v2-1bb80bc57d4188243345c14286a8f06c_r.jpg\" alt=\"\"\/><\/figure>\n\n\n\n<p>\u53d6\u6781\u503c\uff0c\u5bf9V\u8fdb\u884c\u6c42\u5bfc\u5e76\u4ee4\u5bfc\u6570\u7b49\u4e8e0.\u6c42\u89e3\u51fa\u6765\u53ef\u5f97D\u7684\u6700\u4f73\u89e3D*G(x)\u7ed3\u679c\u4e00\u6837\u3002<\/p>\n\n\n\n<p>2\u3001\u5047\u8bbe\u6211\u4eec\u5df2\u7ecf\u77e5\u9053D*G(x)\u662f\u6700\u4f73\u89e3\u4e86\uff0c\u8fd9\u79cd\u60c5\u51b5\u4e0bG\u60f3\u8981\u5f97\u5230\u6700\u4f73\u89e3\u7684\u60c5\u51b5\u662f\uff1aG\u4ea7\u751f\u51fa\u6765\u7684\u5206\u5e03\u8981\u548c\u771f\u5b9e\u5206\u5e03\u4e00\u81f4\uff0c\u5373\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image is-resized is-style-default\"><img loading=\"lazy\" src=\"https:\/\/pic1.zhimg.com\/v2-9f1c2e0ca1ede5c8321240cb2b4cf66c_r.jpg\" alt=\"\" width=\"339\" height=\"64\"\/><\/figure>\n\n\n\n<p>\u5728\u8fd9\u4e2a\u6761\u4ef6\u4e0b\uff0cD*G(x)=1\/2\u3002<\/p>\n\n\n\n<p>\u63a5\u4e0b\u6765\u770bG\u7684\u6700\u4f18\u89e3\u662f\u4ec0\u4e48\uff0c\u56e0\u4e3aD\u7684\u8fd9\u65f6\u5df2\u7ecf\u627e\u5230\u6700\u4f18\u89e3\u4e86\uff0c\u6240\u4ee5\u53ea\u9700\u8981\u8c03\u6574G \uff0c\u4ee4<\/p>\n\n\n\n<figure class=\"wp-block-image is-style-default\"><img src=\"https:\/\/pic1.zhimg.com\/v2-4242bd4c3a0c2684e673c22c388b2c3c_r.jpg\" alt=\"\"\/><\/figure>\n\n\n\n<p>\u5bf9\u4e8eD\u7684\u6700\u4f18\u89e3\u6211\u4eec\u5df2\u7ecf\u77e5\u9053\u4e86\uff0cD*G(x)\uff0c\u53ef\u4ee5\u76f4\u63a5\u628a\u5b83\u5e26\u8fdb\u6765 \u5e76\u53bb\u6389\u524d\u9762\u7684Max<\/p>\n\n\n\n<figure class=\"wp-block-image is-style-default\"><img src=\"https:\/\/pic2.zhimg.com\/v2-84c60fa8a045c033ec871f710ba41a41_r.jpg\" alt=\"\"\/><\/figure>\n\n\n\n<p>\u7136\u540e\u5bf9 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src=\"https:\/\/pic1.zhimg.com\/v2-ba7f1c27454ef0081addaed81b301a58_r.jpg\" alt=\"\" width=\"407\" height=\"78\"\/><\/figure>\n\n\n\n<p>\u5373<\/p>\n\n\n\n<figure class=\"wp-block-image is-resized is-style-default\"><img loading=\"lazy\" src=\"https:\/\/pic1.zhimg.com\/v2-bc339528a53d010ea28b4b24084c3b70_r.jpg\" alt=\"\" width=\"306\" height=\"69\"\/><\/figure>\n\n\n\n<p>\u6240\u4ee5\u8bc1\u660e\u4e86 \u5f53G\u4ea7\u751f\u7684\u6570\u636e\u548c\u771f\u5b9e\u6570\u636e\u662f\u4e00\u6837\u7684\u65f6\u5019\uff0cC\u53d6\u5f97\u6700\u5c0f\u503c\u4e5f\u5c31\u662f\u6700\u4f73\u89e3\u3002<\/p>\n\n\n\n<p><\/p>\n\n\n\n<p><\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-style-default\"><img src=\"https:\/\/pic1.zhimg.com\/v2-11d97052d643a9b195624180e2d0f0ac\" alt=\"\"\/><\/figure>\n\n\n\n<p>\u5982\u4e0a\u56fe\u6240\u793aGAN\u7531\u4e00\u4e2a\u5224\u522b\u5668\uff08Discriminator\uff09\u548c\u4e00\u4e2a\u751f\u6210\u5668\uff08Generator\uff09\u4e24\u4e2a\u7f51\u7edc\u7ec4\u6210\u3002<\/p>\n\n\n\n<p>\u8bad\u7ec3\u65f6\u5148\u8bad\u7ec3\u5224\u522b\u5668\uff1a\u5c06\u8bad\u7ec3\u96c6\u6570\u636e\uff08Training Set\uff09\u6253\u4e0a\u771f\u6807\u7b7e\uff081\uff09\u548c\u751f\u6210\u5668\uff08Generator\uff09\u751f\u6210\u7684\u5047\u56fe\u7247\uff08Fake image\uff09\u6253\u4e0a\u5047\u6807\u7b7e\uff080\uff09\u4e00\u540c\u7ec4\u6210batch\u9001\u5165\u5224\u522b\u5668\uff08Discriminator\uff09\uff0c\u5bf9\u5224\u522b\u5668\u8fdb\u884c\u8bad\u7ec3\u3002\u8ba1\u7b97loss\u65f6\u4f7f\u5224\u522b\u5668\u5bf9\u771f\u6570\u636e\uff08Training Set\uff09\u8f93\u5165\u7684\u5224\u522b\u8d8b\u8fd1\u4e8e\u771f\uff081\uff09\uff0c\u5bf9\u751f\u6210\u5668\uff08Generator\uff09\u751f\u6210\u7684\u5047\u56fe\u7247\uff08Fake 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image\uff09\u7684\u5224\u522b\u8d8b\u8fd1\u4e8e\u771f\uff081\uff09\u3002\u6b64\u8fc7\u7a0b\u4e2d\u53ea\u66f4\u65b0\u751f\u6210\u5668\uff08Generator\uff09\u7684\u53c2\u6570\uff0c\u4e0d\u66f4\u65b0\u5224\u522b\u5668\uff08Discriminator\uff09\u7684\u53c2\u6570\u3002<\/p>\n\n\n\n<p>\u5224\u522b\u5668\u7ed3\u6784\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image is-style-default\"><img src=\"https:\/\/pic4.zhimg.com\/v2-38d47de3cb0536236b6dc59c9987de8b_r.jpg\" alt=\"\"\/><\/figure>\n\n\n\n<p>\u751f\u6210\u5668\u7ed3\u6784\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image is-style-default\"><img src=\"https:\/\/pic4.zhimg.com\/v2-58eb2f06f88a6e81f3c858295054c1cf_r.jpg\" alt=\"\"\/><\/figure>\n\n\n\n<p class=\"has-light-blue-background-color has-background\">\u4ee3\u7801\u5b9e\u73b0\uff1ahttp:\/\/139.9.1.231\/index.php\/2021\/12\/29\/gan\/<\/p>\n\n\n\n<iframe loading=\"lazy\" frameborder=\"no\" border=\"0\" marginwidth=\"0\" marginheight=\"0\" width=\"330\" height=\"86\" 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class=\"screen-reader-text\">GAN\u7cfb\u5217\u4e4b\u7ecf\u5178GAN\uff08\u4e00\uff09<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[4,12,9],"tags":[],"_links":{"self":[{"href":"http:\/\/139.9.1.231\/index.php\/wp-json\/wp\/v2\/posts\/987"}],"collection":[{"href":"http:\/\/139.9.1.231\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/139.9.1.231\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/139.9.1.231\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/139.9.1.231\/index.php\/wp-json\/wp\/v2\/comments?post=987"}],"version-history":[{"count":16,"href":"http:\/\/139.9.1.231\/index.php\/wp-json\/wp\/v2\/posts\/987\/revisions"}],"predecessor-version":[{"id":1397,"href":"http:\/\/139.9.1.231\/index.php\/wp-json\/wp\/v2\/posts\/987\/revisions\/1397"}],"wp:attachment":[{"href":"http:\/\/139.9.1.231\/index.php\/wp-json\/wp\/v2\/media?parent=987"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/139.9.1.231\/index.php\/wp-json\/wp\/v2\/categories?post=987"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/139.9.1.231\/index.php\/wp-json\/wp\/v2\/tags?post=987"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}