{"id":3437,"date":"2020-04-05T17:21:57","date_gmt":"2020-04-05T09:21:57","guid":{"rendered":"http:\/\/www.sniper97.cn\/?p=3437"},"modified":"2020-04-05T17:21:57","modified_gmt":"2020-04-05T09:21:57","slug":"%e3%80%90%e5%90%b4%e6%81%a9%e8%be%be%e6%b7%b1%e5%ba%a6%e5%ad%a6%e4%b9%a0%e3%80%91%e8%87%aa%e7%84%b6%e8%af%ad%e8%a8%80%e5%a4%84%e7%90%86%e4%b8%8e%e8%af%8d%e5%b5%8c%e5%85%a5","status":"publish","type":"post","link":"http:\/\/www.sniper97.cn\/index.php\/note\/deep-learning\/3437\/","title":{"rendered":"\u3010\u5434\u6069\u8fbe\u6df1\u5ea6\u5b66\u4e60\u3011\u81ea\u7136\u8bed\u8a00\u5904\u7406\u4e0e\u8bcd\u5d4c\u5165"},"content":{"rendered":"\n<p>\u5434\u6069\u8fbe\u6df1\u5ea6\u5b66\u4e60\u7b2c\u4e94\u8bfe\u7b2c\u4e8c\u5468 \u81ea\u7136\u8bed\u8a00\u5904\u7406\u4e0e\u8bcd\u5d4c\u5165<\/p>\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter\"><img loading=\"lazy\" decoding=\"async\" width=\"332\" height=\"291\" src=\"\/wp-content\/uploads\/2020\/04\/\u56fe\u7247-11.png\" alt=\"\" class=\"wp-image-3461\" srcset=\"http:\/\/www.sniper97.cn\/wp-content\/uploads\/2020\/04\/\u56fe\u7247-11.png 332w, http:\/\/www.sniper97.cn\/wp-content\/uploads\/2020\/04\/\u56fe\u7247-11-300x263.png 300w\" sizes=\"(max-width: 332px) 100vw, 332px\" \/><\/figure><\/div>\n\n\n<h2 class=\"wp-block-heading\">1.\u8bcd\u6c47\u8868\u5f81<\/h2>\n\n\n<p>\u4e4b\u524d\u4f7f\u7528\u7684one-hot\u7f16\u7801\u65b9\u5f0f\uff0c\u6ca1\u6709\u529e\u6cd5\u83b7\u5f97\u8bcd\u7684\u5173\u8054\u4fe1\u606f\uff0c\u56e0\u6b64\u5bf9\u4e8e\u4e0b\u56fe\u4f8b\u53e5\u4e2dapple \u548corange\u7684\u6cdb\u5316\u4e0d\u662f\u5f88\u597d\uff0c\u56e0\u6b64\u5f15\u5165\u57fa\u4e8e\u7279\u5f81\u7684\u8bcd\u5d4c\u5165\uff1a<\/p>\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter\"><img loading=\"lazy\" decoding=\"async\" width=\"615\" height=\"339\" src=\"\/wp-content\/uploads\/2020\/04\/image.png\" alt=\"\" class=\"wp-image-3438\" srcset=\"http:\/\/www.sniper97.cn\/wp-content\/uploads\/2020\/04\/image.png 615w, http:\/\/www.sniper97.cn\/wp-content\/uploads\/2020\/04\/image-300x165.png 300w\" sizes=\"(max-width: 615px) 100vw, 615px\" \/><\/figure><\/div>\n\n\n<p>\u5177\u6709\u76f8\u5173\u5c5e\u6027\u7684\u8bcd\u5d4c\u5165\u5411\u91cf\u5341\u5206\u9760\u8fd1\uff0c\u56e0\u6b64\u5bf9\u4e8eapple\u548corange\u5f88\u5bb9\u6613\u88ab\u5224\u65ad\u4e3a\u76f8\u8fd1\u7684\u610f\u601d\u3002<\/p>\n\n\n<h2 class=\"wp-block-heading\">2.\u4f7f\u7528\u8bcd\u5d4c\u5165<\/h2>\n\n\n<p>\u5bf9\u4e8e\u4e4b\u524d\u7684one-hot\u7f16\u7801\uff0c\u5982\u679c\u6211\u4eec\u9047\u5230\u7684\u8bcdone-hot\u5e76\u6ca1\u6709\u7f16\u7801\u5219\u4f1a\u53d1\u751f\u5bf9\u53e5\u5b50\u7684\u9519\u8bef\u7406\u89e3\u3002<\/p>\n\n\n<p>\u4f46\u662f\u8bcd\u5d4c\u5165\u7531\u4e8e\u5b66\u4e60\u6a21\u578b\u5f88\u5927\uff0c\u901a\u5e38\u90fd\u662f\u767e\u4e07\u7ea7\u7684\uff0c\u56e0\u6b64\u53ef\u4ee5\u9047\u5230\u66f4\u597d\u7684\u8bcd\u8bed\u8868\u793a\u3002<\/p>\n\n\n<p>\u6211\u4eec\u540c\u6837\u4e5f\u53ef\u4ee5\u4f7f\u7528\u8fc1\u79fb\u8bad\u7ec3\u6765\u5b8c\u6210\u81ea\u5df1\u7684\u8bcd\u5d4c\u5165\uff1a<\/p>\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter\"><img loading=\"lazy\" decoding=\"async\" width=\"614\" height=\"281\" src=\"\/wp-content\/uploads\/2020\/04\/image-1.png\" alt=\"\" class=\"wp-image-3439\" srcset=\"http:\/\/www.sniper97.cn\/wp-content\/uploads\/2020\/04\/image-1.png 614w, http:\/\/www.sniper97.cn\/wp-content\/uploads\/2020\/04\/image-1-300x137.png 300w\" sizes=\"(max-width: 614px) 100vw, 614px\" \/><\/figure><\/div>\n\n\n<h2 class=\"wp-block-heading\">3.\u8bcd\u5d4c\u5165\u7684\u7279\u6027<\/h2>\n\n\n<p>\u8bcd\u5d4c\u5165\u8fd8\u53ef\u4ee5\u8fdb\u884c\u63a8\u7406\u4efb\u52a1\u3002<\/p>\n\n\n<p>\u6bd4\u5982man\u5bf9\u5e94woman\u3001king\u5bf9\u5e94queen\u7b49\u3002<\/p>\n\n\n<p>\u7b80\u5355\u8bf4\u5c31\u662f\u6211\u4eec\u901a\u8fc7\u5411\u91cf\u5dee\u5f02\u6784\u6210\u4e00\u4e2a\u5e73\u884c\u56db\u8fb9\u5f62\uff0c\u4ee5\u786e\u5b9a\u5bf9\u5e94\u5173\u7cfb\uff1a<\/p>\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter\"><img loading=\"lazy\" decoding=\"async\" width=\"616\" height=\"342\" src=\"\/wp-content\/uploads\/2020\/04\/image-2.png\" alt=\"\" class=\"wp-image-3440\" srcset=\"http:\/\/www.sniper97.cn\/wp-content\/uploads\/2020\/04\/image-2.png 616w, http:\/\/www.sniper97.cn\/wp-content\/uploads\/2020\/04\/image-2-300x167.png 300w\" sizes=\"(max-width: 616px) 100vw, 616px\" \/><\/figure><\/div>\n\n\n<p>\u56e0\u6b64\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u76f8\u4f3c\u5ea6\u6765\u8fdb\u884c\u8bcd\u63a8\u7406\u3002<\/p>\n\n\n<h2 class=\"wp-block-heading\">4.\u5b66\u4e60\u8bcd\u5d4c\u5165<\/h2>\n\n\n<p>\u6211\u4eec\u5c06\u591a\u4e2a\u5355\u8bcd\u7684\u8bcd\u5d4c\u5165\u8fde\u63a5\u8d77\u6765\u9001\u5165softmax\u9884\u6d4b\u4e0b\u4e00\u4e2a\u5355\u8bcd\uff1a<\/p>\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter\"><img loading=\"lazy\" decoding=\"async\" width=\"625\" height=\"340\" src=\"\/wp-content\/uploads\/2020\/04\/image-3.png\" alt=\"\" class=\"wp-image-3441\" srcset=\"http:\/\/www.sniper97.cn\/wp-content\/uploads\/2020\/04\/image-3.png 625w, http:\/\/www.sniper97.cn\/wp-content\/uploads\/2020\/04\/image-3-300x163.png 300w\" sizes=\"(max-width: 625px) 100vw, 625px\" \/><\/figure><\/div>\n\n\n<p>\u4e3a\u4e86\u9632\u6b62\u53e5\u5b50\u8fc7\u957f\u9020\u6210\u7684\u95ee\u9898\uff0c\u4e00\u822c\u6211\u4eec\u4f7f\u7528\u4e00\u4e2a\u7a97\u53e3\uff0c\u6bd4\u5982\u4e0b\u9762\u5c31\u662f\u4f7f\u7528\u7a97\u53e3\u5927\u5c0f\u4e3a4\uff0c\u5411\u540e\u9884\u6d4b\uff08\u9884\u6d4bjuice\uff09<\/p>\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter\"><img loading=\"lazy\" decoding=\"async\" width=\"611\" height=\"345\" src=\"\/wp-content\/uploads\/2020\/04\/image-4.png\" alt=\"\" class=\"wp-image-3442\" srcset=\"http:\/\/www.sniper97.cn\/wp-content\/uploads\/2020\/04\/image-4.png 611w, http:\/\/www.sniper97.cn\/wp-content\/uploads\/2020\/04\/image-4-300x169.png 300w\" sizes=\"(max-width: 611px) 100vw, 611px\" \/><\/figure><\/div>\n\n\n<h2 class=\"wp-block-heading\">5.Word2Vec<\/h2>\n\n\n<p> \u5047\u8bbe\u5728\u8bad\u7ec3\u96c6\u4e2d\u7ed9\u5b9a\u4e86\u4e00\u4e2a\u8fd9\u6837\u7684\u53e5\u5b50\uff1a\u201c<strong>I want a glass of orange juice to go along with my cereal.<\/strong>\u201d\uff0c\u5728<strong>Skip-Gram<\/strong>\u6a21\u578b\u4e2d\uff0c\u6211\u4eec\u8981\u505a\u7684\u662f\u62bd\u53d6\u4e0a\u4e0b\u6587\u548c\u76ee\u6807\u8bcd\u914d\u5bf9\uff0c\u6765\u6784\u9020\u4e00\u4e2a\u76d1\u7763\u5b66\u4e60\u95ee\u9898\u3002\u4e0a\u4e0b\u6587\u4e0d\u4e00\u5b9a\u603b\u662f\u76ee\u6807\u5355\u8bcd\u4e4b\u524d\u79bb\u5f97\u6700\u8fd1\u7684\u56db\u4e2a\u5355\u8bcd\uff0c\u6216\u6700\u8fd1\u7684\u4e2a\u5355\u8bcd\u3002\u6211\u4eec\u8981\u7684\u505a\u7684\u662f\u968f\u673a\u9009\u4e00\u4e2a\u8bcd\u4f5c\u4e3a\u4e0a\u4e0b\u6587\u8bcd\uff0c\u6bd4\u5982\u9009<strong>orange<\/strong>\u8fd9\u4e2a\u8bcd\uff0c\u7136\u540e\u6211\u4eec\u8981\u505a\u7684\u662f\u968f\u673a\u5728\u4e00\u5b9a\u8bcd\u8ddd\u5185\u9009\u53e6\u4e00\u4e2a\u8bcd\uff0c\u6bd4\u5982\u5728\u4e0a\u4e0b\u6587\u8bcd\u524d\u540e5\u4e2a\u8bcd\u5185\u6216\u8005\u524d\u540e10\u4e2a\u8bcd\u5185\uff0c\u6211\u4eec\u5c31\u5728\u8fd9\u4e2a\u8303\u56f4\u5185\u9009\u62e9\u76ee\u6807\u8bcd\u3002\u53ef\u80fd\u4f60\u6b63\u597d\u9009\u5230\u4e86<strong>juice<\/strong>\u4f5c\u4e3a\u76ee\u6807\u8bcd\uff0c\u6b63\u597d\u662f\u4e0b\u4e00\u4e2a\u8bcd\uff08\u8868\u793a<strong>orange<\/strong>\u7684\u4e0b\u4e00\u4e2a\u8bcd\uff09\uff0c\u4e5f\u6709\u53ef\u80fd\u4f60\u9009\u5230\u4e86\u524d\u9762\u7b2c\u4e8c\u4e2a\u8bcd\uff0c\u6240\u4ee5\u53e6\u4e00\u79cd\u914d\u5bf9\u76ee\u6807\u8bcd\u53ef\u4ee5\u662f<strong>glass<\/strong>\uff0c\u8fd8\u53ef\u80fd\u6b63\u597d\u9009\u5230\u4e86\u5355\u8bcd<strong>my<\/strong>\u4f5c\u4e3a\u76ee\u6807\u8bcd\u3002 <\/p>\n\n\n<p> \u6211\u4eec\u7ee7\u7eed\u5047\u8bbe\u4f7f\u7528\u4e00\u4e2a10,000\u8bcd\u7684\u8bcd\u6c47\u8868\uff0c\u6709\u65f6\u8bad\u7ec3\u4f7f\u7528\u7684\u8bcd\u6c47\u8868\u4f1a\u8d85\u8fc7\u4e00\u767e\u4e07\u8bcd\u3002\u4f46\u6211\u4eec\u8981\u89e3\u51b3\u7684\u57fa\u672c\u7684\u76d1\u7763\u5b66\u4e60\u95ee\u9898\u662f\u5b66\u4e60\u4e00\u79cd\u6620\u5c04\u5173\u7cfb\uff0c\u4ece\u4e0a\u4e0b\u6587<strong>c<\/strong>\uff0c\u6bd4\u5982\u5355\u8bcd<strong>orange<\/strong>\uff0c\u5230\u67d0\u4e2a\u76ee\u6807\u8bcd\uff0c\u8bb0\u4e3a<strong>t<\/strong>\uff0c\u53ef\u80fd\u662f\u5355\u8bcd<strong>juice<\/strong>\u6216\u8005\u5355\u8bcd<strong>glass<\/strong>\u6216\u8005\u5355\u8bcd<strong>my<\/strong>\u3002\u5ef6\u7eed\u4e0a\u4e00\u5f20\u5e7b\u706f\u7247\u7684\u4f8b\u5b50\uff0c\u5728\u6211\u4eec\u7684\u8bcd\u6c47\u8868\u4e2d\uff0c<strong>orange<\/strong>\u662f\u7b2c6257\u4e2a\u5355\u8bcd\uff0c<strong>juice<\/strong>\u662f10,000\u4e2a\u5355\u8bcd\u4e2d\u7684\u7b2c4834\u4e2a\uff0c\u8fd9\u5c31\u662f\u4f60\u60f3\u8981\u7684\u6620\u5c04\u5230\u8f93\u51fay\u7684\u8f93\u5165x\u3002 <\/p>\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter\"><img loading=\"lazy\" decoding=\"async\" width=\"675\" height=\"339\" src=\"\/wp-content\/uploads\/2020\/04\/image-5.png\" alt=\"\" class=\"wp-image-3443\" srcset=\"http:\/\/www.sniper97.cn\/wp-content\/uploads\/2020\/04\/image-5.png 675w, http:\/\/www.sniper97.cn\/wp-content\/uploads\/2020\/04\/image-5-300x151.png 300w\" sizes=\"(max-width: 675px) 100vw, 675px\" \/><\/figure><\/div>\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter\"><img loading=\"lazy\" decoding=\"async\" width=\"304\" height=\"336\" src=\"\/wp-content\/uploads\/2020\/04\/image-6.png\" alt=\"\" class=\"wp-image-3444\" srcset=\"http:\/\/www.sniper97.cn\/wp-content\/uploads\/2020\/04\/image-6.png 304w, http:\/\/www.sniper97.cn\/wp-content\/uploads\/2020\/04\/image-6-271x300.png 271w\" sizes=\"(max-width: 304px) 100vw, 304px\" \/><\/figure><\/div>\n\n\n<p>\u7c7b\u4f3c\u4e8e\u6ce8\u610f\u529b\u673a\u5236\uff1f<\/p>\n\n\n<h2 class=\"wp-block-heading\">6.Glove\u8bcd\u5411\u91cf<\/h2>\n\n\n<p>\u901a\u8fc7\u4e00\u4e2a\u7a97\u53e3\u7684\u79fb\u52a8\uff0c\u7136\u540e\u5224\u65ad\u7a97\u53e3\u4e2d\u95f4\u7684\u8bcd\u548c\u5176\u4ed6\u8bcd\u7684\u5173\u7cfb\u3002<\/p>\n\n\n<p>\u6bd4\u5982\uff1a\u4e2d\u5fc3\u8bcd\u4e3alove\uff0c\u8bed\u5883\u8bcd\u4e3abut\u3001you\u3001him\u3001i\uff1b\u5219\u6267\u884c\uff1a<\/p>\n\n\n<p><em>Xlove<\/em>,<em>but<\/em>+=1<br \/><em>Xlove<\/em>,<em>you<\/em>+=1<br \/><em>Xlove<\/em>,<em>him<\/em>+=1<br \/><em>Xlove<\/em>,<em>i<\/em>+=1<\/p>\n\n\n<p>\u4f7f\u7528\u7a97\u53e3\u5c06\u6574\u4e2a\u8bed\u6599\u5e93\u904d\u5386\u4e00\u904d\uff0c\u5373\u53ef\u5f97\u5230<strong>\u5171\u73b0\u77e9\u9635<\/strong>X\u3002<\/p>\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter\"><img loading=\"lazy\" decoding=\"async\" width=\"662\" height=\"319\" src=\"\/wp-content\/uploads\/2020\/04\/image-8.png\" alt=\"\" class=\"wp-image-3446\" srcset=\"http:\/\/www.sniper97.cn\/wp-content\/uploads\/2020\/04\/image-8.png 662w, http:\/\/www.sniper97.cn\/wp-content\/uploads\/2020\/04\/image-8-300x145.png 300w\" sizes=\"(max-width: 662px) 100vw, 662px\" \/><\/figure><\/div>\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter\"><img loading=\"lazy\" decoding=\"async\" width=\"968\" height=\"138\" src=\"\/wp-content\/uploads\/2020\/04\/image-7.png\" alt=\"\" class=\"wp-image-3445\" srcset=\"http:\/\/www.sniper97.cn\/wp-content\/uploads\/2020\/04\/image-7.png 968w, http:\/\/www.sniper97.cn\/wp-content\/uploads\/2020\/04\/image-7-300x43.png 300w, http:\/\/www.sniper97.cn\/wp-content\/uploads\/2020\/04\/image-7-768x109.png 768w\" sizes=\"(max-width: 968px) 100vw, 968px\" \/><\/figure><\/div>\n\n\n<h2 class=\"wp-block-heading\">\u6d4b\u9a8c\uff1a<\/h2>\n\n\n<p><strong>1. \u5047\u8bbe\u4f60\u4e3a10000\u4e2a\u5355\u8bcd\u5b66\u4e60\u8bcd\u5d4c\u5165\uff0c\u4e3a\u4e86\u6355\u83b7\u5168\u90e8\u8303\u56f4\u7684\u5355\u8bcd\u7684\u53d8\u5316\u4ee5\u53ca\u610f\u4e49\uff0c\u90a3\u4e48\u8bcd\u5d4c\u5165\u5411\u91cf\u5e94\u8be5\u662f10000\u7ef4\u7684\u3002 <\/strong><\/p>\n\n\n<p>\u9519\u8bef\u3002<\/p>\n\n\n<p><strong>2. \u4ec0\u4e48\u662ft-SNE\uff1f <\/strong><\/p>\n\n\n<ol><li> \u4e00\u79cd\u975e\u7ebf\u6027\u964d\u7ef4\u7b97\u6cd5 <\/li><li>  \u4e00\u79cd\u80fd\u591f\u89e3\u51b3\u8bcd\u5411\u91cf\u4e0a\u7684\u7c7b\u6bd4\u7684\u7ebf\u6027\u53d8\u6362\u3002 <\/li><li> \u4e00\u79cd\u7528\u4e8e\u5b66\u4e60\u8bcd\u5d4c\u5165\u7684\u76d1\u7763\u5b66\u4e60\u7b97\u6cd5\u3002 <\/li><li> \u4e00\u4e2a\u5f00\u6e90\u5e8f\u5217\u6a21\u578b\u5e93\u3002 <\/li><\/ol>\n\n\n<p>1\u3002<\/p>\n\n\n<p><strong>3. \u5047\u8bbe\u4f60\u4e0b\u8f7d\u4e86\u4e00\u4e2a\u5df2\u7ecf\u5728\u4e00\u4e2a\u5f88\u5927\u7684\u6587\u672c\u8bed\u6599\u5e93\u4e0a\u8bad\u7ec3\u8fc7\u7684\u8bcd\u5d4c\u5165\u7684\u6570\u636e\uff0c\u7136\u540e\u4f60\u8981\u7528\u8fd9\u4e2a\u8bcd\u5d4c\u5165\u6765\u8bad\u7ec3RNN\u5e76\u7528\u4e8e\u8bc6\u522b\u4e00\u6bb5\u6587\u5b57\u4e2d\u7684\u60c5\u611f\uff0c\u5224\u65ad\u8fd9\u6bb5\u6587\u5b57\u7684\u5185\u5bb9\u662f\u5426\u8868\u8fbe\u4e86\u201c\u5feb\u4e50\u201d\u3002 <\/strong> <\/p>\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter\"><img loading=\"lazy\" decoding=\"async\" width=\"981\" height=\"174\" src=\"\/wp-content\/uploads\/2020\/04\/image-9.png\" alt=\"\" class=\"wp-image-3447\" srcset=\"http:\/\/www.sniper97.cn\/wp-content\/uploads\/2020\/04\/image-9.png 981w, http:\/\/www.sniper97.cn\/wp-content\/uploads\/2020\/04\/image-9-300x53.png 300w, http:\/\/www.sniper97.cn\/wp-content\/uploads\/2020\/04\/image-9-768x136.png 768w\" sizes=\"(max-width: 981px) 100vw, 981px\" \/><\/figure><\/div>\n\n\n<p><strong>\u90a3\u4e48\u5373\u4f7f\u201c\u6b23\u559c\u82e5\u72c2\u201d\u8fd9\u4e2a\u8bcd\u6ca1\u6709\u51fa\u73b0\u5728\u4f60\u7684\u5c0f\u8bad\u7ec3\u96c6\u4e2d\uff0c\u4f60\u7684RNN\u4e5f\u4f1a\u8ba4\u4e3a\u201c\u6211\u6b23\u559c\u82e5\u72c2\u201d\u5e94\u8be5\u88ab\u8d34y = 1\u7684\u6807\u7b7e\u3002 <\/strong><\/p>\n\n\n<p>\u6b63\u786e\u3002<\/p>\n\n\n<p><strong>4. \u5bf9\u4e8e\u8bcd\u5d4c\u5165\u800c\u8a00\uff0c\u4e0b\u9762\u54ea\u4e00\u4e2a\uff08\u4e9b\uff09\u65b9\u7a0b\u662f\u6210\u7acb\u7684\uff1f <\/strong><\/p>\n\n\n<p> e_{boy} = e_{ girl } \u2248 e_{ brother } &#8211; e_{sister}  <\/p>\n\n\n<p> e_{boy} &#8211; e_{brother} \u2248 e_{girl} &#8211; e_{sister} <\/p>\n\n\n<p><strong>5. \u8bbe<\/strong><em><strong>E<\/strong><\/em><strong>\u4e3a\u5d4c\u5165\u77e9\u9635\uff0c<\/strong><em><strong>e<\/strong><\/em><strong>1234\u5bf9\u5e94\u7684\u662f\u8bcd\u201c1234\u201d\u7684\u72ec\u70ed\u5411\u91cf\uff0c\u4e3a\u4e86\u83b7\u5f971234\u7684\u8bcd\u5d4c\u5165\uff0c\u4e3a\u4ec0\u4e48\u4e0d\u76f4\u63a5\u5728Python\u4e2d\u4f7f\u7528\u4ee3\u7801<\/strong><em><strong>E<\/strong><\/em><strong>\u2217<\/strong><em><strong>e<\/strong><\/em><strong>1234\u200b\u5462\uff1f<\/strong> <\/p>\n\n\n<p> \u56e0\u4e3a\u8fd9\u4e2a\u64cd\u4f5c\u662f\u5728\u6d6a\u8d39\u8ba1\u7b97\u8d44\u6e90\u3002 <\/p>\n\n\n<p> <strong>6.\u5728\u5b66\u4e60\u8bcd\u5d4c\u5165\u65f6\uff0c\u6211\u4eec\u521b\u5efa\u4e86\u4e00\u4e2a\u9884\u6d4bP(target\u2223context)\u7684\u4efb\u52a1\uff0c\u5982\u679c\u8fd9\u4e2a\u9884\u6d4b\u505a\u7684\u4e0d\u662f\u5f88\u597d\u90a3\u4e5f\u662f\u6ca1\u6709\u5173\u7cfb\u7684\uff0c\u56e0\u4e3a\u8fd9\u4e2a\u4efb\u52a1\u66f4\u91cd\u8981\u7684\u662f\u5b66\u4e60\u4e86\u4e00\u7ec4\u6709\u7528\u7684\u5d4c\u5165\u8bcd\u3002 <\/strong><\/p>\n\n\n<p>\u9519\u8bef\u3002<\/p>\n\n\n<p><strong>7. \u5728word2vec\u7b97\u6cd5\u4e2d\uff0c\u4f60\u8981\u9884\u6d4bP(t\u2223c)\uff0c\u5176\u4e2dt\u662f\u76ee\u6807\u8bcd\uff08target word\uff09\uff0cc\u662f\u8bed\u5883\u8bcd\uff08context word\uff09\u3002\u4f60\u5e94\u5f53\u5728\u8bad\u7ec3\u96c6\u4e2d\u600e\u6837\u9009\u62e9<\/strong><em><strong>t<\/strong><\/em><strong> \u4e0e <\/strong><em><strong>c<\/strong><\/em><strong>\u5462\uff1f <\/strong><\/p>\n\n\n<p> c \u4e0e t \u5e94\u5f53\u5728\u9644\u8fd1\u8bcd\u4e2d\u3002 <\/p>\n\n\n<p><strong>8. \u5047\u8bbe\u4f60\u67091000\u4e2a\u5355\u8bcd\u8bcd\u6c47\uff0c\u5e76\u4e14\u6b63\u5728\u5b66\u4e60500\u7ef4\u7684\u8bcd\u5d4c\u5165\uff0cword2vec\u6a21\u578b\u4f7f\u7528\u4e0b\u9762\u7684softmax\u51fd\u6570\uff0c \u4ee5\u4e0b\u8bf4\u6cd5\u4e2d\u54ea\u4e00\u4e2a\uff08\u4e9b\uff09\u662f\u6b63\u786e\u7684\uff1f <\/strong><\/p>\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter\"><img loading=\"lazy\" decoding=\"async\" width=\"214\" height=\"75\" src=\"\/wp-content\/uploads\/2020\/04\/image-10.png\" alt=\"\" class=\"wp-image-3448\"\/><\/figure><\/div>\n\n\n<ol><li>\u03b8t\u200b \u4e0e ec\u200b \u90fd\u662f500\u7ef4\u7684\u5411\u91cf\u3002 <\/li><li> \u03b8t\u200b \u4e0e ec\u200b \u90fd\u662f10000\u7ef4\u7684\u5411\u91cf\u3002 <\/li><li> \u03b8t\u200b \u4e0e ec\u200b \u90fd\u662f\u901a\u8fc7Adam\u6216\u68af\u5ea6\u4e0b\u964d\u7b49\u4f18\u5316\u7b97\u6cd5\u8fdb\u884c\u8bad\u7ec3\u7684\u3002 <\/li><li> \u8bad\u7ec3\u4e4b\u540e\uff0c\u03b8t\u200b\u5e94\u8be5\u975e\u5e38\u63a5\u8fd1ec\u200b\uff0c\u56e0\u4e3at\u548cc\u662f\u4e00\u4e2a\u8bcd\u3002 <\/li><\/ol>\n\n\n<p>1\uff0c3\u3002<\/p>\n\n\n<p><strong>9. \u5047\u8bbe\u4f60\u670910000\u4e2a\u5355\u8bcd\u8bcd\u6c47\uff0c\u5e76\u4e14\u6b63\u5728\u5b66\u4e60500\u7ef4\u7684\u8bcd\u5d4c\u5165\uff0cGloVe\u6a21\u578b\u6700\u5c0f\u5316\u4e86\u8fd9\u4e2a\u76ee\u6807\uff0c\u4e00\u4e0b\u90a3\u4e2a\u8bf4\u6cd5\u6b63\u786e<\/strong><\/p>\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter\"><img loading=\"lazy\" decoding=\"async\" width=\"413\" height=\"78\" src=\"\/wp-content\/uploads\/2020\/04\/image-11.png\" alt=\"\" class=\"wp-image-3449\" srcset=\"http:\/\/www.sniper97.cn\/wp-content\/uploads\/2020\/04\/image-11.png 413w, http:\/\/www.sniper97.cn\/wp-content\/uploads\/2020\/04\/image-11-300x57.png 300w\" sizes=\"(max-width: 413px) 100vw, 413px\" \/><\/figure><\/div>\n\n\n<ol><li> \u03b8i\u200b \u4e0e ej\u200b \u5e94\u5f53\u521d\u59cb\u5316\u4e3a0\u3002 <\/li><li>\u03b8i\u200b \u4e0e ej\u200b \u5e94\u5f53\u4f7f\u7528\u968f\u673a\u6570\u8fdb\u884c\u521d\u59cb\u5316\u3002 <\/li><li>Xij\u200b \u662f\u5355\u8bcdi\u5728j\u4e2d\u51fa\u73b0\u7684\u6b21\u6570\u3002 <\/li><li> \u52a0\u6743\u51fd\u6570 f(.) \u5fc5\u987b\u6ee1\u8db3 f(0)=0\u3002 <\/li><\/ol>\n\n\n<p>2\uff0c3\uff0c4\u3002<\/p>\n\n\n<p><strong>10. \u4f60\u5df2\u7ecf\u5728\u6587\u672c\u6570\u636e\u96c6m1\u200b\u4e0a\u8bad\u7ec3\u4e86\u8bcd\u5d4c\u5165\uff0c\u73b0\u5728\u51c6\u5907\u5c06\u5b83\u7528\u4e8e\u4e00\u4e2a\u8bed\u8a00\u4efb\u52a1\u4e2d\uff0c\u5bf9\u4e8e\u8fd9\u4e2a\u4efb\u52a1\uff0c\u4f60\u6709\u4e00\u4e2a\u5355\u72ec\u6807\u8bb0\u7684\u6570\u636e\u96c6m2\u200b \uff0c\u8bf7\u8bb0\u4f4f\uff0c\u4f7f\u7528\u8bcd\u5d4c\u5165\u662f\u4e00\u79cd\u8fc1\u79fb\u5b66\u4e60\u7684\u5f62\u5f0f\uff0c\u5728\u8fd9\u54ea\u60c5\u51b5\u4e0b\uff0c\u4f60\u8ba4\u4e3a\u8bcd\u5d4c\u5165\u4f1a\u6709\u5e2e\u52a9\u5417\uff1f <\/strong><\/p>\n\n\n<p>m1&gt;&gt;m2<\/p>\n\n\n<h2 class=\"wp-block-heading\">\u7f16\u7a0b\u4f5c\u4e1a<\/h2>\n\n\n<p>\u672c\u5468\u7f16\u7a0b\u4f5c\u4e1a\u5206\u4e3a\u4e09\u90e8\u5206\uff1a<\/p>\n\n\n<p>\u7b2c\u4e00\u90e8\u5206\uff0c\u719f\u6089\u8bcd\u5411\u91cf<\/p>\n\n\n<p>\u7b2c\u4e8c\u90e8\u5206\uff0c\u4f7f\u7528\u8bcd\u5411\u91cf\u6765\u8fdb\u884cemoji\u9884\u6d4b<\/p>\n\n\n<p>\u7b2c\u4e09\u90e8\u5206\uff0c\u4f7f\u7528LSTM+\u8bcd\u5411\u91cf\u5bf9emoji\u8fdb\u884c\u9884\u6d4b<\/p>\n\n\n<p>1.\u719f\u6089\u8bcd\u5411\u91cf<\/p>\n\n\n<p>\u9996\u5148\u5bfc\u5305\uff1a<\/p>\n\n\n<pre class=\"wp-block-preformatted\">import numpy as np<br \/>from course_5_week_2 import w2v_utils<\/pre>\n\n\n<p>\u52a0\u8f7d\u5df2\u7ecf\u8bad\u7ec3\u597d\u7684\u8bcd\u5411\u91cf\uff1a<\/p>\n\n\n<pre class=\"wp-block-preformatted\"># \u52a0\u8f7d\u8bcd\u5411\u91cf<br \/>words, word_to_vec_map = w2v_utils.read_glove_vecs('data\/glove.6B.50d.txt')<\/pre>\n\n\n<p>\u7136\u540e\u6211\u4eec\u53ef\u4ee5\u6839\u636e\u4f59\u5f26\u76f8\u4f3c\u5ea6\u6765\u5224\u65ad\u4e24\u4e2a\u8bcd\u7684\u76f8\u5173\u6027\uff1a<\/p>\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter\"><img loading=\"lazy\" decoding=\"async\" width=\"1001\" height=\"356\" src=\"\/wp-content\/uploads\/2020\/04\/\u56fe\u7247-7.png\" alt=\"\" class=\"wp-image-3452\" srcset=\"http:\/\/www.sniper97.cn\/wp-content\/uploads\/2020\/04\/\u56fe\u7247-7.png 1001w, http:\/\/www.sniper97.cn\/wp-content\/uploads\/2020\/04\/\u56fe\u7247-7-300x107.png 300w, http:\/\/www.sniper97.cn\/wp-content\/uploads\/2020\/04\/\u56fe\u7247-7-768x273.png 768w\" sizes=\"(max-width: 1001px) 100vw, 1001px\" \/><\/figure><\/div>\n\n\n<pre class=\"wp-block-preformatted\">def cosine_similarity(u, v):<br \/>    <em>\"\"\"<br \/><\/em><em>    <\/em><em>\u4f59\u5f26\u76f8\u4f3c\u5ea6<br \/><\/em><em>    <\/em><strong><em>:param<\/em><\/strong><em> u:<br \/><\/em><em>    <\/em><strong><em>:param<\/em><\/strong><em> v:<br \/><\/em><em>    <\/em><strong><em>:return<\/em><\/strong><em>:<br \/><\/em><em>    \"\"\"<br \/><\/em><em>    <\/em>distance = 0<br \/>    # \u8ba1\u7b97u\u4e0ev\u7684\u5185\u79ef<br \/>    dot = np.dot(u, v)<br \/>    # \u8ba1\u7b97u\u7684\u7b2c2\u8303\u6570<br \/>    norm_u = np.sqrt(np.sum(np.power(u, 2)))<br \/>    # \u8ba1\u7b97v\u7684\u7b2c\u4e8c\u8303\u6570<br \/>    norm_v = np.sqrt(np.sum(np.power(v, 2)))<br \/>    # \u8ba1\u7b97\u4f59\u5f26\u76f8\u4f3c\u5ea6<br \/>    cosine_similarity = np.divide(dot, norm_u * norm_v)<br \/>    return cosine_similarity<\/pre>\n\n\n<p>\u8fd8\u53ef\u4ee5\u627e\u7c7b\u4f3c\u7684\u8bcd\uff0c\u6bd4\u5982\u6839\u636e\u7537\u5973\u4e4b\u95f4\u7684\u5173\u7cfb\u627e\u51fa\u4e08\u592b\u5bf9\u5e94\u4ec0\u4e48<\/p>\n\n\n<p>e.g.<\/p>\n\n\n<pre class=\"wp-block-code\"><code>italy -> italian &lt;====> spain -> spanish\nindia -> delhi &lt;====> japan -> tokyo\nman -> woman &lt;====> boy -> girl\nsmall -> smaller &lt;====> large -> larger<\/code><\/pre>\n\n\n<pre class=\"wp-block-preformatted\">def complete_analogy(word_a, word_b, word_c, word_to_vec_map):<br \/>    <em>\"\"\"<br \/><\/em><em>    a<\/em><em>\u4e0e<\/em><em>b<\/em><em>\u76f8\u6bd4\u5c31\u7c7b\u4f3c\u4e8e<\/em><em>d<\/em><em>\u4e0e<\/em><em>____<\/em><em>\u76f8\u6bd4\u4e00\u6837<br \/><\/em><em>    <\/em><strong><em>:param<\/em><\/strong><em> word_a:<br \/><\/em><em>    <\/em><strong><em>:param<\/em><\/strong><em> word_b:<br \/><\/em><em>    <\/em><strong><em>:param<\/em><\/strong><em> word_to_vec_map:<br \/><\/em><em>    <\/em><strong><em>:return<\/em><\/strong><em>:<br \/><\/em><em>    \"\"\"<br \/><\/em><em>    <\/em># \u5355\u8bcd\u8f6c\u6362\u4e3a\u5c0f\u5199<br \/>    word_a, word_b, word_c = word_a.lower(), word_b.lower(), word_c.lower()<br \/>    # \u83b7\u53d6\u8bcd\u5411\u91cf<br \/>    e_a, e_b, e_c = word_to_vec_map[word_a], word_to_vec_map[word_b], word_to_vec_map[word_c]<br \/>    # \u83b7\u53d6\u5168\u90e8\u5355\u8bcd<br \/>    words = word_to_vec_map.keys()<br \/>    # \u521d\u59cb\u5316<br \/>    max_cosine_sim = -100<br \/>    best_word = None<br \/><br \/>    # \u904d\u5386\u6574\u4e2a\u6570\u636e\u96c6<br \/>    for word in words:<br \/>        if word in [word_a, word_b, word_c]:<br \/>            continue<br \/>        cosine_sim = cosine_similarity(e_b - e_a, word_to_vec_map[word] - e_c)<br \/>        if cosine_sim &gt; max_cosine_sim:<br \/>            max_cosine_sim = cosine_sim<br \/>            best_word = word<br \/>    return best_word<\/pre>\n\n\n<p>\u7136\u540e\u662femoji\u9884\u6d4b\uff1a<\/p>\n\n\n<p>\u9996\u5148\u5bfc\u5305\uff1a<\/p>\n\n\n<pre class=\"wp-block-preformatted\">import numpy as np<br \/>from course_5_week_2 import emo_utils<\/pre>\n\n\n<p>\u8bfb\u53d6\u6570\u636e\uff1a<\/p>\n\n\n<pre class=\"wp-block-preformatted\">X_train, Y_train = emo_utils.read_csv('.\/data\/train_emoji.csv')\nX_test, Y_test = emo_utils.read_csv('.\/data\/test.csv')\nmaxLen = len(max(X_train, key=len).split())\nindex = 3\nprint(X_train[index], emo_utils.label_to_emoji(Y_train[index]))\nY_oh_train = emo_utils.convert_to_one_hot(Y_train, C=5)\nY_oh_test = emo_utils.convert_to_one_hot(Y_test, C=5)\nword_to_index, index_to_word, word_to_vec_map = emo_utils.read_glove_vecs('data\/glove.6B.50d.txt')<\/pre>\n\n\n<p>\u4e00\u4e2a\u53ef\u4ee5\u8fd4\u56de\u63cf\u8ff0\u53e5\u5b50\u5e73\u5747\u8bcd\u5411\u91cf\u7684\u65b9\u6cd5\uff1a<\/p>\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"351\" src=\"\/wp-content\/uploads\/2020\/04\/\u56fe\u7247-8-1024x351.png\" alt=\"\" class=\"wp-image-3455\" srcset=\"http:\/\/www.sniper97.cn\/wp-content\/uploads\/2020\/04\/\u56fe\u7247-8-1024x351.png 1024w, http:\/\/www.sniper97.cn\/wp-content\/uploads\/2020\/04\/\u56fe\u7247-8-300x103.png 300w, http:\/\/www.sniper97.cn\/wp-content\/uploads\/2020\/04\/\u56fe\u7247-8-768x263.png 768w, http:\/\/www.sniper97.cn\/wp-content\/uploads\/2020\/04\/\u56fe\u7247-8.png 1026w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure><\/div>\n\n\n<pre class=\"wp-block-preformatted\">def sentence_to_avg(sentence, word_to_vec_map):<br \/>    <em>\"\"\"<br \/><\/em><em>    <\/em><em>\u8fd4\u56de\u53e5\u5b50\u7684\u5e73\u5747\u8bcd\u5411\u91cf<br \/><\/em><em>    <\/em><strong><em>:param<\/em><\/strong><em> sentence:<br \/><\/em><em>    <\/em><strong><em>:param<\/em><\/strong><em> word_to_vec_map:<br \/><\/em><em>    <\/em><strong><em>:return<\/em><\/strong><em>:<br \/><\/em><em>    \"\"\"<br \/><\/em><em>    <\/em>words = sentence.lower().split()<br \/>    avg = np.zeros(50)<br \/>    for word in words:<br \/>        avg += word_to_vec_map[word]<br \/>    avg = np.divide(avg, len(words))<br \/>    return avg<\/pre>\n\n\n<p>\u7136\u540e\u5199\u4e00\u4e2a\u6a21\u578b\uff08\u4e00\u4e2a\u5f88\u7b80\u5355\u7684\u795e\u7ecf\u7f51\u7edc\uff09\u5e76\u8bad\u7ec3\uff1a<\/p>\n\n\n<pre class=\"wp-block-preformatted\">def model(X, Y, word2vec_map, learning_rate=0.01, num_iterations=400):<br \/>    <em>\"\"\"<br \/><\/em><em>    <\/em><em>\u6574\u4f53\u6a21\u578b<br \/><\/em><em>    <\/em><strong><em>:param<\/em><\/strong><em> X:<br \/><\/em><em>    <\/em><strong><em>:param<\/em><\/strong><em> Y:<br \/><\/em><em>    <\/em><strong><em>:param<\/em><\/strong><em> word2vec_map:<br \/><\/em><em>    <\/em><strong><em>:param<\/em><\/strong><em> learning_rate:<br \/><\/em><em>    <\/em><strong><em>:param<\/em><\/strong><em> num_iterations:<br \/><\/em><em>    <\/em><strong><em>:return<\/em><\/strong><em>:<br \/><\/em><em>    \"\"\"<br \/><\/em><em>    <\/em>np.random.seed(1)<br \/>    # \u5b9a\u4e49\u8bad\u7ec3\u6570\u91cf<br \/>    m = Y.shape[0]<br \/>    n_y = 5<br \/>    n_h = 50<br \/><br \/>    # \u4f7f\u7528Xavier\u521d\u59cb\u5316\u53c2\u6570<br \/>    W = np.random.randn(n_y, n_h) \/ np.sqrt(n_h)<br \/>    b = np.zeros((n_y,))<br \/><br \/>    # \u5c06Y\u8f6c\u6362\u6210one hot\u7f16\u7801<br \/>    Y_oh = emo_utils.convert_to_one_hot(Y, C=n_y)<br \/><br \/>    for t in range(num_iterations):<br \/>        for i in range(m):<br \/>            # \u83b7\u53d6\u7b2ci\u4e2a\u8bad\u7ec3\u6837\u672c\u7684\u5747\u503c<br \/>            avg = sentence_to_avg(X[i], word2vec_map)<br \/><br \/>            # \u524d\u5411\u4f20\u64ad<br \/>            z = np.dot(W, avg) + b<br \/>            a = emo_utils.softmax(z)<br \/><br \/>            # \u8ba1\u7b97\u7b2ci\u4e2a\u8bad\u7ec3\u7684\u635f\u5931<br \/>            cost = -np.sum(Y_oh[i] * np.log(a))<br \/><br \/>            # \u8ba1\u7b97\u68af\u5ea6<br \/>            dz = a - Y_oh[i]<br \/>            dW = np.dot(dz.reshape(n_y, 1), avg.reshape(1, n_h))<br \/>            db = dz<br \/><br \/>            # \u66f4\u65b0\u53c2\u6570<br \/>            W = W - learning_rate * dW<br \/>            b = b - learning_rate * db<br \/>        if t % 100 == 0:<br \/>            print(\"\u7b2c{t}\u8f6e\uff0c\u635f\u5931\u4e3a{cost}\".format(t=t, cost=cost))<br \/>            pred = emo_utils.predict(X, Y, W, b, word2vec_map)<br \/><br \/>    return pred, W, b<br \/><br \/>pred, W, b = model(X_train, Y_train, word_to_vec_map)<br \/>print(\"=====\u8bad\u7ec3\u96c6====\")<br \/>pred_train = emo_utils.predict(X_train, Y_train, W, b, word_to_vec_map)<br \/>print(\"=====\u6d4b\u8bd5\u96c6====\")<br \/>pred_test = emo_utils.predict(X_test, Y_test, W, b, word_to_vec_map)<br \/><br \/>X_my_sentences = np.array([\"i adore you\", \"i love you\", \"funny lol\", \"lets play with a ball\", \"food is ready\", \"you are not happy\"])<br \/>Y_my_labels = np.array([[0], [0], [2], [1], [4],[3]])<br \/><br \/>pred = emo_utils.predict(X_my_sentences, Y_my_labels , W, b, word_to_vec_map)<br \/>emo_utils.print_predictions(X_my_sentences, pred)<br \/><\/pre>\n\n\n<p>\u5bf9\u4e8e\u4e0a\u9762\u8fd9\u79cd\uff0c\u5f88\u663e\u7136\u65e0\u6cd5\u6709\u6548\u7684\u533a\u5206\u51fahappy \u548c not happy\u7684\u5173\u7cfb\uff0c\u56e0\u6b64\u5f15\u5165SLTM\u7684emoji\u9884\u6d4b\uff1a<\/p>\n\n\n<p>\u7531\u4e8e\u795e\u7ecf\u7f51\u7edc\u9700\u8981\u4e00\u4e2a\u56fa\u5b9a\u7684\u957f\u5ea6\uff0c\u56e0\u4e3a\u6211\u4eec\u9700\u8981\u5bf9\u53e5\u5b50\u8fdb\u884c\u622a\u53d6\u6216\u8005\u586b0\uff1a<\/p>\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"323\" src=\"\/wp-content\/uploads\/2020\/04\/\u56fe\u7247-9-1024x323.png\" alt=\"\" class=\"wp-image-3456\" srcset=\"http:\/\/www.sniper97.cn\/wp-content\/uploads\/2020\/04\/\u56fe\u7247-9-1024x323.png 1024w, http:\/\/www.sniper97.cn\/wp-content\/uploads\/2020\/04\/\u56fe\u7247-9-300x94.png 300w, http:\/\/www.sniper97.cn\/wp-content\/uploads\/2020\/04\/\u56fe\u7247-9-768x242.png 768w, http:\/\/www.sniper97.cn\/wp-content\/uploads\/2020\/04\/\u56fe\u7247-9.png 1070w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure><\/div>\n\n\n<pre class=\"wp-block-preformatted\">def sentences_to_indices(X, word_to_index, max_len):<br \/>    <em>\"\"\"<br \/><\/em><em>    <\/em><em>\u5c06\u53e5\u5b50\u6269\u5145\u5230<\/em><em>max len<\/em><em>\u957f\u5ea6<br \/><\/em><em>    <\/em><strong><em>:param<\/em><\/strong><em> X:<br \/><\/em><em>    <\/em><strong><em>:param<\/em><\/strong><em> word_to_index:<br \/><\/em><em>    <\/em><strong><em>:param<\/em><\/strong><em> max_len:<br \/><\/em><em>    <\/em><strong><em>:return<\/em><\/strong><em>:<br \/><\/em><em>    \"\"\"<br \/><\/em><em>    <\/em>m = X.shape[0]  # \u8bad\u7ec3\u96c6\u6570\u91cf<br \/>    # \u4f7f\u75280\u521d\u59cb\u5316X_indices<br \/>    X_indices = np.zeros((m, max_len))<br \/><br \/>    for i in range(m):<br \/>        # \u5c06\u7b2ci\u4e2a\u5c45\u4f4f\u8f6c\u5316\u4e3a\u5c0f\u5199\u5e76\u6309\u5355\u8bcd\u5206\u5f00\u3002<br \/>        sentences_words = X[i].lower().split()<br \/><br \/>        # \u521d\u59cb\u5316j\u4e3a0<br \/>        j = 0<br \/><br \/>        # \u904d\u5386\u8fd9\u4e2a\u5355\u8bcd\u5217\u8868<br \/>        for w in sentences_words:<br \/>            # \u5c06X_indices\u7684\u7b2c(i, j)\u53f7\u5143\u7d20\u4e3a\u5bf9\u5e94\u7684\u5355\u8bcd\u7d22\u5f15<br \/>            X_indices[i, j] = word_to_index[w]<br \/><br \/>            j += 1<br \/><br \/>    return X_indices<\/pre>\n\n\n<p>\u7136\u540e\u751f\u6210\u8fd9\u4e2aembedding\u5c42\uff1a<\/p>\n\n\n<pre class=\"wp-block-preformatted\">def pretrained_embedding_layer(word_to_vec_map, word_to_index):<br \/>    <em>\"\"\"<br \/><\/em><em><br \/><\/em><em>    <\/em><strong><em>:param<\/em><\/strong><em> word_to_vec_map:<br \/><\/em><em>    <\/em><strong><em>:param<\/em><\/strong><em> word_to_index:<br \/><\/em><em>    <\/em><strong><em>:return<\/em><\/strong><em>:<br \/><\/em><em>    \"\"\"<br \/><\/em><em>    <\/em>vocab_len = len(word_to_index) + 1<br \/>    emb_dim = word_to_vec_map[\"cucumber\"].shape[0]<br \/><br \/>    # \u521d\u59cb\u5316\u5d4c\u5165\u77e9\u9635(dict to list)<br \/>    emb_matrix = np.zeros((vocab_len, emb_dim))<br \/><br \/>    # \u5c06\u5d4c\u5165\u77e9\u9635\u7684\u6bcf\u884c\u7684\u201cindex\u201d\u8bbe\u7f6e\u4e3a\u8bcd\u6c47\u201cindex\u201d\u7684\u8bcd\u5411\u91cf\u8868\u793a<br \/>    for word, index in word_to_index.items():<br \/>        emb_matrix[index, :] = word_to_vec_map[word]<br \/><br \/>    # \u5b9a\u4e49Keras\u7684embbeding\u5c42<br \/>    embedding_layer = keras.layers.embeddings.Embedding(vocab_len, emb_dim, trainable=False)<br \/><br \/>    # \u6784\u5efaembedding\u5c42\u3002<br \/>    embedding_layer.build((None,))<br \/><br \/>    # \u5c06\u5d4c\u5165\u5c42\u7684\u6743\u91cd\u8bbe\u7f6e\u4e3a\u5d4c\u5165\u77e9\u9635\u3002<br \/>    embedding_layer.set_weights([emb_matrix])<br \/><br \/>    return embedding_layer<\/pre>\n\n\n<p>\u6700\u540e\u5199\u4e00\u4e2aLSTM\u5e76\u4e14\u8bad\u7ec3\uff1a<\/p>\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter\"><img loading=\"lazy\" decoding=\"async\" width=\"902\" height=\"570\" src=\"\/wp-content\/uploads\/2020\/04\/\u56fe\u7247-10.png\" alt=\"\" class=\"wp-image-3457\" srcset=\"http:\/\/www.sniper97.cn\/wp-content\/uploads\/2020\/04\/\u56fe\u7247-10.png 902w, http:\/\/www.sniper97.cn\/wp-content\/uploads\/2020\/04\/\u56fe\u7247-10-300x190.png 300w, http:\/\/www.sniper97.cn\/wp-content\/uploads\/2020\/04\/\u56fe\u7247-10-768x485.png 768w\" sizes=\"(max-width: 902px) 100vw, 902px\" \/><\/figure><\/div>\n\n\n<pre class=\"wp-block-preformatted\">def model(input_shape, word_to_vec_map, word_to_index):<br \/>    <em>\"\"\"<br \/><\/em><em>    <\/em><em>\u7b97\u6cd5\u5b9e\u73b0<br \/><\/em><em>    <\/em><strong><em>:param<\/em><\/strong><em> input_shape:<br \/><\/em><em>    <\/em><strong><em>:param<\/em><\/strong><em> word_to_vec_map:<br \/><\/em><em>    <\/em><strong><em>:param<\/em><\/strong><em> word_to_index:<br \/><\/em><em>    <\/em><strong><em>:return<\/em><\/strong><em>:<br \/><\/em><em>    \"\"\"<br \/><\/em><em>    <\/em># \u5b9a\u4e49sentence_indices\u4e3a\u8ba1\u7b97\u56fe\u7684\u8f93\u5165\uff0c\u7ef4\u5ea6\u4e3a(input_shape,)\uff0c\u7c7b\u578b\u4e3adtype 'int32'<br \/>    sentence_indices = keras.Input(input_shape, dtype='int32')<br \/><br \/>    # \u521b\u5efaembedding\u5c42<br \/>    embedding_layer = pretrained_embedding_layer(word_to_vec_map, word_to_index)<br \/><br \/>    # \u901a\u8fc7\u5d4c\u5165\u5c42\u4f20\u64adsentence_indices\uff0c\u4f60\u4f1a\u5f97\u5230\u5d4c\u5165\u7684\u7ed3\u679c<br \/>    embeddings = embedding_layer(sentence_indices)<br \/><br \/>    # \u901a\u8fc7\u5e26\u6709128\u7ef4\u9690\u85cf\u72b6\u6001\u7684LSTM\u5c42\u4f20\u64ad\u5d4c\u5165<br \/>    # \u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u8fd4\u56de\u7684\u8f93\u51fa\u5e94\u8be5\u662f\u4e00\u6279\u5e8f\u5217\u3002<br \/>    X = keras.layers.LSTM(128, return_sequences=True)(embeddings)<br \/>    # \u4f7f\u7528dropout\uff0c\u6982\u7387\u4e3a0.5<br \/>    X = keras.layers.Dropout(0.5)(X)<br \/>    # \u901a\u8fc7\u53e6\u4e00\u4e2a128\u7ef4\u9690\u85cf\u72b6\u6001\u7684LSTM\u5c42\u4f20\u64adX<br \/>    # \u6ce8\u610f\uff0c\u8fd4\u56de\u7684\u8f93\u51fa\u5e94\u8be5\u662f\u5355\u4e2a\u9690\u85cf\u72b6\u6001\uff0c\u800c\u4e0d\u662f\u4e00\u7ec4\u5e8f\u5217\u3002<br \/>    X = keras.layers.LSTM(128, return_sequences=False)(X)<br \/>    # \u4f7f\u7528dropout\uff0c\u6982\u7387\u4e3a0.5<br \/>    X = keras.layers.Dropout(0.5)(X)<br \/>    # \u901a\u8fc7softmax\u6fc0\u6d3b\u7684Dense\u5c42\u4f20\u64adX\uff0c\u5f97\u5230\u4e00\u62795\u7ef4\u5411\u91cf\u3002<br \/>    X = keras.layers.Dense(5)(X)<br \/>    # \u6dfb\u52a0softmax\u6fc0\u6d3b<br \/>    X = keras.layers.Activation('softmax')(X)<br \/><br \/>    # \u521b\u5efa\u6a21\u578b\u5b9e\u4f53<br \/>    model = keras.Model(inputs=sentence_indices, outputs=X)<br \/><br \/>    return model<br \/><br \/><br \/>X_train, Y_train = emo_utils.read_csv('.\/data\/train_emoji.csv')<br \/>X_test, Y_test = emo_utils.read_csv('.\/data\/test.csv')<br \/>max_len = 10<br \/>model = model((max_len,), word_to_vec_map, word_to_index)<br \/># model.summary()<br \/>model.compile(loss='categorical_crossentropy', optimizer='adam', metrics=['accuracy'])<br \/>X_train_indices = sentences_to_indices(X_train, word_to_index, max_len)<br \/>Y_train_oh = emo_utils.convert_to_one_hot(Y_train, C=5)<br \/>model.fit(X_train_indices, Y_train_oh, epochs=50, batch_size=32, shuffle=True)<br \/>X_test_indices = sentences_to_indices(X_test, word_to_index, max_len=max_len)<br \/>Y_test_oh = emo_utils.convert_to_one_hot(Y_test, C=5)<br \/>loss, acc = model.evaluate(X_test_indices, Y_test_oh)<br \/><br \/>print(\"Test accuracy = \", acc)<br \/><br \/>C = 5<br \/>y_test_oh = np.eye(C)[Y_test.reshape(-1)]<br \/>X_test_indices = sentences_to_indices(X_test, word_to_index, max_len)<br \/>pred = model.predict(X_test_indices)<br \/>for i in range(len(X_test)):<br \/>    x = X_test_indices<br \/>    num = np.argmax(pred[i])<br \/>    if num != Y_test[i]:<br \/>        print('\u6b63\u786e\u8868\u60c5\uff1a' + emo_utils.label_to_emoji(Y_test[i]) + '   \u9884\u6d4b\u7ed3\u679c\uff1a ' + X_test[i] + emo_utils.label_to_emoji(<br \/>            num).strip())<br \/><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>\u5434\u6069\u8fbe\u6df1\u5ea6\u5b66\u4e60\u7b2c\u4e94\u8bfe\u7b2c\u4e8c\u5468 \u81ea\u7136\u8bed\u8a00\u5904\u7406\u4e0e\u8bcd\u5d4c\u5165 1.\u8bcd\u6c47\u8868\u5f81 \u4e4b\u524d\u4f7f\u7528\u7684one-hot\u7f16\u7801\u65b9\u5f0f\uff0c\u6ca1 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_mi_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[7],"tags":[],"views":7195,"_links":{"self":[{"href":"http:\/\/www.sniper97.cn\/index.php\/wp-json\/wp\/v2\/posts\/3437"}],"collection":[{"href":"http:\/\/www.sniper97.cn\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.sniper97.cn\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.sniper97.cn\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.sniper97.cn\/index.php\/wp-json\/wp\/v2\/comments?post=3437"}],"version-history":[{"count":0,"href":"http:\/\/www.sniper97.cn\/index.php\/wp-json\/wp\/v2\/posts\/3437\/revisions"}],"wp:attachment":[{"href":"http:\/\/www.sniper97.cn\/index.php\/wp-json\/wp\/v2\/media?parent=3437"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.sniper97.cn\/index.php\/wp-json\/wp\/v2\/categories?post=3437"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.sniper97.cn\/index.php\/wp-json\/wp\/v2\/tags?post=3437"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}