{"id":373814,"date":"2021-09-14T08:59:41","date_gmt":"2021-09-14T15:59:41","guid":{"rendered":"https:\/\/blog.webex.com\/uncategorized-zh-hans\/%e8%87%aa%e5%8a%a8%e8%af%ad%e9%9f%b3%e8%af%86%e5%88%ab%e7%b3%bb%e7%bb%9f%e7%9a%84%e5%90%8e%e5%a4%84%e7%90%86\/"},"modified":"2021-09-14T08:59:41","modified_gmt":"2021-09-14T15:59:41","slug":"%e8%87%aa%e5%8a%a8%e8%af%ad%e9%9f%b3%e8%af%86%e5%88%ab%e7%b3%bb%e7%bb%9f%e7%9a%84%e5%90%8e%e5%a4%84%e7%90%86","status":"publish","type":"post","link":"https:\/\/blog.webex.com\/zh-hans\/engineering-zh-hans\/%e8%87%aa%e5%8a%a8%e8%af%ad%e9%9f%b3%e8%af%86%e5%88%ab%e7%b3%bb%e7%bb%9f%e7%9a%84%e5%90%8e%e5%a4%84%e7%90%86\/","title":{"rendered":"\u81ea\u52a8\u8bed\u97f3\u8bc6\u522b\u7cfb\u7edf\u7684\u540e\u5904\u7406"},"content":{"rendered":"<h2>\u7b80\u4ecb<\/h2>\n<p>\u81ea\u52a8\u8bed\u97f3\u8bc6\u522b (ASR) \u7cfb\u7edf\u63d0\u4f9b\u6587\u672c\u8f6c\u5f55\u3002\u901a\u5e38\uff0c\u662f\u4e00\u8fde\u4e32\u7684\u8bcd\u3002\u601d\u79d1\u4f7f\u7528 ASR \u7cfb\u7edf\u5728 Webex \u4f1a\u8bae\u4e2d\u63d0\u4f9b\u5b9e\u65f6\u9690\u85cf\u5f0f\u5b57\u5e55\u3002\u51fa\u73b0\u7684\u4e00\u4e2a\u95ee\u9898\u662f\uff0c\u5728\u6ca1\u6709\u6807\u70b9\u7b26\u53f7\u548c\u5927\u5199\u5b57\u6bcd\u7684\u60c5\u51b5\u4e0b\uff0c\u53ef\u80fd\u5f88\u96be\u9605\u8bfb\u5b57\u5e55\u3002\u7406\u89e3\u6587\u672c\u542b\u4e49\u7684\u80fd\u529b\u4f1a\u56e0\u6807\u70b9\u7b26\u53f7\u800c\u6539\u53d8\u3002\u8bbe\u60f3\u4ee5\u4e0b\u8bcd\u8bed\u5e8f\u5217\uff0c\u5176\u4e2d\u5305\u542b\u4e24\u4e2a\u6807\u70b9\u7b26\u53f7\u9009\u9879\uff1a<\/p>\n<p>\u201c\u8c22\u8c22\u4f60\u4f60\u7684\u6350\u6b3e\u521a\u521a\u5e2e\u52a9\u67d0\u4eba\u627e\u5230\u4e86\u5de5\u4f5c\u201d\u3002<\/p>\n<p>\u9009\u9879 A\uff1a\u201c\u8c22\u8c22\u4f60\uff01\u4f60\u7684\u6350\u6b3e\u521a\u521a\u5e2e\u52a9\u67d0\u4eba\u627e\u5230\u4e86\u5de5\u4f5c\u3002\u201d<\/p>\n<p>\u9009\u9879 B\uff1a\u201c\u8c22\u8c22\u4f60\uff01\u4f60\u7684\u6350\u6b3e\u5e2e\u52a9\u4e86\u67d0\u4eba\u3002\u627e\u5230\u4e00\u4efd\u5de5\u4f5c\u3002\u201d<\/p>\n<p>\u4e00\u4e2a\u6807\u70b9\u7b26\u53f7\u4ea7\u751f\u4e86\u5f88\u5927\u7684\u4e0d\u540c\u3002<\/p>\n<p>\u6211\u4eec\u5c06\u4ecb\u7ecd\u6784\u5efa\u540e\u5904\u7406\u7cfb\u7edf\u65f6\u7684\u51e0\u4e2a\u6ce8\u610f\u4e8b\u9879\uff1a<\/p>\n<ul>\n<li>\u4ece\u539f\u59cb\u6587\u672c\u4e2d\u6062\u590d\u6807\u70b9\u548c\u5927\u5199\u7684\u9ad8\u7cbe\u5ea6\u6a21\u578b\u3002\u5bf9\u4e34\u65f6\u7ed3\u679c\u8fdb\u884c\u5feb\u901f\u63a8\u7406\uff1a\u4ee5\u8ddf\u4e0a\u5b9e\u65f6\u5b57\u5e55\u7684\u901f\u5ea6\u3002<\/li>\n<li>\u8d44\u6e90\u5229\u7528\u5c11\uff1a\u8bed\u97f3\u8bc6\u522b\u4e3a\u8ba1\u7b97\u5bc6\u96c6\u578b\uff1b\u6211\u4eec\u4e0d\u9700\u8981\u6807\u70b9\u7b26\u53f7\u6a21\u578b\u4e5f\u662f\u8ba1\u7b97\u5bc6\u96c6\u578b\u3002<\/li>\n<li>\u5904\u7406\u8bcd\u6c47\u8868\u4ee5\u5916\u7684\u8bcd\u8bed\u7684\u80fd\u529b\uff1a\u6709\u65f6\uff0c\u6211\u4eec\u9700\u8981\u7ed9\u6a21\u578b\u4e4b\u524d\u6ca1\u6709\u89c1\u8fc7\u7684\u8bcd\u8bed\u52a0\u6807\u70b9\u7b26\u53f7\u6216\u5927\u5199\u3002<\/li>\n<\/ul>\n<p>\u4e00\u4e9b\u7ecf\u5178\u7684\u57fa\u4e8e n-gram \u7684\u65b9\u6cd5 [1] \u5177\u6709\u76f8\u5bf9\u8f83\u597d\u7684\u8d28\u91cf\u3002\u7136\u800c\uff0c\u5b83\u4eec\u4e5f\u6709\u5176\u7f3a\u70b9\u3002\u5c3d\u7ba1 n-gram \u6a21\u578b\u5177\u6709\u5feb\u901f\u63a8\u7406\u529f\u80fd\uff0c\u4f46\u6839\u636e\u8bed\u8a00\u8bcd\u6c47\u91cf\u7684\u4e0d\u540c\uff0c\u5373\u4f7f\u662f 3-gram \u6a21\u578b\u4e5f\u4f1a\u5360\u7528\u51e0\u5343\u5146\u5b57\u8282\u7684\u78c1\u76d8\u7a7a\u95f4\u3002\u53e6\u4e00\u4e2a\u7f3a\u70b9\u662f\u5bf9\u8bcd\u6c47\u8868\u4ee5\u5916\u7684\u8bcd\u8bed\u7684\u5904\u7406\u3002\u5982\u679c\u4e00\u4e2a\u8bcd\u8bed\u6ca1\u6709\u51fa\u73b0\u5728\u8bad\u7ec3\u6570\u636e\u4e2d\uff0c\u90a3\u4e48\u6a21\u578b\u5c31\u4e0d\u80fd\u4ee5\u5e38\u89c4\u7684\u65b9\u5f0f\u5904\u7406\u5b83\uff0c\u51c6\u786e\u6027\u5c31\u4f1a\u4e0b\u964d\u3002\u73b0\u4ee3\u65b9\u6cd5\u4f7f\u7528\u6709\u6548\u4f46\u8ba1\u7b97\u5bc6\u96c6\u578b\u6280\u672f\uff0c\u5982\u53cc\u5411 RNN [3] \u6216\u57fa\u4e8e\u6ce8\u610f\u529b\u548c\u53d8\u6362\u5668\u7684\u795e\u7ecf\u7f51\u7edc\u67b6\u6784 [2]\u3002\u8fd9\u4e9b\u6a21\u578b\u6709\u5f88\u9ad8\u7684\u51c6\u786e\u6027 [2]\uff0c\u4f46\u53ef\u80fd\u4e0d\u592a\u9002\u5408\u5b9e\u65f6\u6d41\u5a92\u4f53\u7528\u4f8b\uff0c\u56e0\u4e3a\u5b83\u4eec\u9700\u8981\u5168\u90e8\u7684\u8f93\u5165\u5e8f\u5217\u6765\u8fd0\u884c\u63a8\u7406\u3002\u4f8b\u5982\uff0c\u5982\u679c\u53cc\u5411 RNN \u53ea\u6709\u4e00\u4e2a\u65b0\u7684\u8f93\u5165\u6807\u8bb0\uff0c\u5219\u9700\u8981\u66f4\u65b0\u6a21\u578b\u5148\u524d\u770b\u5230\u7684\u6240\u6709\u6807\u8bb0\u7684\u9690\u85cf\u72b6\u6001\uff08\u56fe 1\uff09\u3002<div id=\"attachment_373203\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/blog.webex.com\/wp-content\/uploads\/2021\/09\/Computations-on-the-backward-pass-of-a-bi-directional-RNN.png\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-373203\" class=\"wp-image-373203 size-full\" src=\"https:\/\/blog.webex.com\/wp-content\/uploads\/2021\/09\/Computations-on-the-backward-pass-of-a-bi-directional-RNN.png\" alt=\"\u53cc\u5411 RNN \u7684\u53cd\u5411\u63a8\u5bfc\u8ba1\u7b97\" width=\"904\" height=\"224\" srcset=\"https:\/\/blog.webex.com\/wp-content\/uploads\/2021\/09\/Computations-on-the-backward-pass-of-a-bi-directional-RNN.png 904w, https:\/\/blog.webex.com\/wp-content\/uploads\/2021\/09\/Computations-on-the-backward-pass-of-a-bi-directional-RNN-300x74.png 300w, https:\/\/blog.webex.com\/wp-content\/uploads\/2021\/09\/Computations-on-the-backward-pass-of-a-bi-directional-RNN-768x190.png 768w\" sizes=\"auto, (max-width: 904px) 100vw, 904px\" \/><\/a><p id=\"caption-attachment-373203\" class=\"wp-caption-text\">\u56fe 1. \u53cc\u5411 RNN \u7684\u53cd\u5411\u63a8\u5bfc\u8ba1\u7b97\u3002\u5bf9\u4e8e\u6bcf\u4e00\u4e2a\u65b0\u7684\u8f93\u5165\uff0c\u6240\u6709\u4ee5\u524d\u7684\u9690\u85cf\u72b6\u6001\u90fd\u5fc5\u987b\u88ab\u4f9d\u6b21\u66f4\u65b0\u3002<\/p><\/div> \u00a0 \u4e00\u4e9b\u65b9\u6cd5\u8bd5\u56fe\u901a\u8fc7\u5efa\u7acb\u4e24\u4e2a\u4e0d\u540c\u7684\u6a21\u578b\u6765\u89e3\u51b3\u6807\u70b9\u7b26\u53f7\u548c\u5927\u5199\u5b57\u6bcd\u7684\u95ee\u9898 [3][6]\uff0c\u800c\u53e6\u4e00\u4e9b\u65b9\u6cd5\u5219\u5c06\u4e24\u8005\u5408\u5e76\u4e3a\u4e00\u4e2a\u6a21\u578b\uff0c\u56e0\u4e3a\u5176\u8f93\u51fa\u9ad8\u5ea6\u76f8\u5173 [4][2]\u3002\u7d27\u8ddf\u6807\u70b9\u7b26\u53f7\u7684\u8bcd\u8bed\u5f88\u597d\u5730\u8bc1\u660e\u4e86\u8fd9\u79cd\u76f8\u5173\u6027\uff1a\u53e5\u53f7\u540e\u7684\u8bcd\u53ef\u80fd\u88ab\u5927\u5199\uff0c\u800c\u9017\u53f7\u540e\u7684\u8bcd\u53ef\u80fd\u88ab\u5c0f\u5199\u3002\u6709\u4e00\u4e9b\u65b9\u6cd5\u5efa\u8bae\u91c7\u7528\u591a\u8f93\u51fa\u7684\u67b6\u6784 [4]\uff1a\u6bcf\u4e2a\u4efb\u52a1\u5206\u522b\u6709\u4e00\u4e2a\u3002\u8fd9\u4e9b\u65b9\u6cd5\u8868\u660e\uff0c\u8fd9\u79cd\u67b6\u6784\u4f18\u4e8e\u5355\u72ec\u7684\u6807\u70b9\u7b26\u53f7\u548c\u5927\u5199\u5b57\u6bcd\u67b6\u6784\u3002\u9274\u4e8e\u4e0a\u8ff0\u8003\u8651\uff0c\u6211\u4eec\u9009\u62e9\u4f7f\u7528\u4e00\u4e2a\u57fa\u4e8e GRU \u7684\u795e\u7ecf\u7f51\u7edc\uff0c\u5b83\u6709\u4e24\u4e2a\u8f93\u51fa\uff0c\u5206\u522b\u7528\u4e8e\u6807\u70b9\u7b26\u53f7\u548c\u5927\u5199\u5b57\u6bcd\u3002\u4e3a\u4e86\u5904\u7406\u8bcd\u6c47\u8868\u4e4b\u5916\u7684\u8bcd\u8bed\uff0c\u6211\u4eec\u4f7f\u7528\u4e86\u7c7b\u4f3c\u4e8e SentencePiece \u7684\u6280\u672f [6]\uff0c\u5c06\u672a\u77e5\u7684\u8bcd\u8bed\u5206\u5272\u6210\u66f4\u5c0f\u7684\u6807\u8bb0\uff0c\u6216\u8005\u5728\u6781\u7aef\u60c5\u51b5\u4e0b\uff0c\u5206\u5272\u6210\u5b57\u7b26\u3002\u6211\u4eec\u5c06\u5728\u4e0b\u9762\u63cf\u8ff0\u8be6\u7ec6\u4fe1\u606f\u548c\u6ce8\u610f\u4e8b\u9879\u3002<\/p>\n<h2>TruncBiRNN<\/h2>\n<p>\u76f4\u89c9\u611f\u77e5\u548c\u5b9e\u9a8c\u8868\u660e\uff0c\u5728\u6784\u5efa\u6807\u70b9\u7b26\u53f7\u6a21\u578b\u65f6\uff0c\u8003\u8651\u672a\u6765\u7684\u8bed\u5883\u662f\u975e\u5e38\u91cd\u8981\u7684\uff0c\u56e0\u4e3a\u5728\u4e0d\u77e5\u9053\u540e\u9762\u51e0\u4e2a\u8bcd\u8bed\u7684\u60c5\u51b5\u4e0b\uff0c\u5f88\u96be\u786e\u5b9a\u5f53\u524d\u4f4d\u7f6e\u7684\u6807\u70b9\u7b26\u53f7\u3002\u4e3a\u4e86\u4f7f\u7528\u5173\u4e8e\u4e0b\u4e00\u4e2a\u6807\u8bb0\u7684\u4fe1\u606f\uff0c\u800c\u4e0d\u662f\u88ab\u8feb\u4e3a\u540e\u9000\u65b9\u5411\u7684\u6240\u6709\u6807\u8bb0\u66f4\u65b0\u6240\u6709\u7684\u9690\u85cf\u72b6\u6001\uff0c\u6211\u4eec\u51b3\u5b9a\u5c06\u540e\u9000\u65b9\u5411\u622a\u65ad\u4e3a\u4e00\u4e2a\u56fa\u5b9a\u7684\u7a97\u53e3\u3002\u5728\u524d\u8fdb\u65b9\u5411\u4e0a\uff0c\u5b83\u53ea\u662f\u4e00\u4e2a\u666e\u901a\u7684 RNN\u3002\u5728\u540e\u9000\u65b9\u5411\u4e0a\uff0c\u6211\u4eec\u53ea\u8003\u8651\u6bcf\u4e2a\u6807\u8bb0\u7684\u4e00\u4e2a\u56fa\u5b9a\u7a97\u53e3\uff0c\u5728\u8fd9\u4e2a\u7a97\u53e3\u4e0a\u8fd0\u884c RNN\uff08\u56fe 2\uff09\u3002\u5229\u7528\u8fd9\u4e2a\u7a97\u53e3\uff0c\u6211\u4eec\u53ef\u4ee5\u5b9e\u73b0\u5bf9\u65b0\u8f93\u5165\u6807\u8bb0\u7684\u6052\u5b9a\u65f6\u95f4\u63a8\u7406\uff08\u5728\u524d\u8fdb\u65b9\u5411\u4e0a\u6211\u4eec\u9700\u8981\u8ba1\u7b97\u4e00\u4e2a\u9690\u85cf\u72b6\u6001\uff0c\u5728\u540e\u9000\u65b9\u5411\u4e0a\u9700\u8981\u8ba1\u7b97 n+1 \u4e2a\u9690\u85cf\u72b6\u6001\uff09\u3002<div id=\"attachment_373213\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/blog.webex.com\/wp-content\/uploads\/2021\/09\/TruncBiRNN-example.png\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-373213\" class=\"size-full wp-image-373213\" src=\"https:\/\/blog.webex.com\/wp-content\/uploads\/2021\/09\/TruncBiRNN-example.png\" alt=\"TruncBiRNN \u793a\u4f8b\" width=\"904\" height=\"204\" srcset=\"https:\/\/blog.webex.com\/wp-content\/uploads\/2021\/09\/TruncBiRNN-example.png 904w, https:\/\/blog.webex.com\/wp-content\/uploads\/2021\/09\/TruncBiRNN-example-300x68.png 300w, https:\/\/blog.webex.com\/wp-content\/uploads\/2021\/09\/TruncBiRNN-example-768x173.png 768w\" sizes=\"auto, (max-width: 904px) 100vw, 904px\" \/><\/a><p id=\"caption-attachment-373213\" class=\"wp-caption-text\">\u56fe 2. \u672c\u4f8b\u4e2d\uff0c\u5bf9\u4e8e\u5f53\u524d\u7684\u6bcf\u4e2a\u6807\u8bb0\uff0c\u53ea\u8003\u8651\u63a5\u4e0b\u6765\u7684\u4e24\u4e2a\u6807\u8bb0\u6765\u8ba1\u7b97\u540e\u9000\u65b9\u5411\u7684\u9690\u85cf\u72b6\u6001\u3002<\/p><\/div> \u00a0 \u73b0\u5728\uff0c\u5bf9\u4e8e\u6bcf\u4e2a\u6807\u8bb0\uff0c\u6211\u4eec\u90fd\u6709\u5206\u522b\u7528\u4e8e\u524d\u8fdb\u548c\u540e\u9000\u65b9\u5411\u7684\u9690\u85cf\u72b6\u6001\u3002\u6211\u4eec\u628a\u8fd9\u4e2a\u5c42\u79f0\u4e3a TruncBiRNN \u6216 TruncBiGRU\uff08\u56e0\u4e3a\u6211\u4eec\u4f7f\u7528 GRU\uff09\u3002\u8fd9\u4e9b\u9690\u85cf\u72b6\u6001\u53ef\u4ee5\u5728\u6052\u5b9a\u65f6\u95f4\u5185\u8ba1\u7b97\uff0c\u8fd9\u4e0d\u53d6\u51b3\u4e8e\u8f93\u5165\u957f\u5ea6\u3002\u6052\u5b9a\u65f6\u95f4\u8fd0\u7b97\u5bf9\u4e8e\u6a21\u578b\u8ddf\u4e0a\u5b9e\u65f6\u5b57\u5e55\u7684\u901f\u5ea6\u81f3\u5173\u91cd\u8981\u3002<\/p>\n<h2>\u67b6\u6784<\/h2>\n<p>\u8be5\u67b6\u6784\u7531\u5d4c\u5165\u5c42\u3001TruncBiGRU \u548c\u5355\u5411 GRU \u5c42\u4ee5\u53ca\u5168\u8fde\u63a5\u5c42\u7ec4\u6210\u3002\u5bf9\u4e8e\u8f93\u51fa\uff0c\u6211\u4eec\u4f7f\u7528\u4e24\u4e2a softmax \u5c42\uff0c\u5206\u522b\u7528\u4e8e\u6807\u70b9\u7b26\u53f7\u548c\u5927\u5199\u5b57\u6bcd\uff08\u56fe 3\uff09\u3002<div id=\"attachment_373223\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/blog.webex.com\/wp-content\/uploads\/2021\/09\/Model-architecture-with-window-size-equal-to-two-tokens-for-TruncBiGRU.png\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-373223\" class=\"size-full wp-image-373223\" src=\"https:\/\/blog.webex.com\/wp-content\/uploads\/2021\/09\/Model-architecture-with-window-size-equal-to-two-tokens-for-TruncBiGRU.png\" alt=\"\u56fe 3. \u7a97\u53e3\u5927\u5c0f\u7b49\u4e8e TruncBiGRUFi \u7684\u4e24\u4e2a\u6807\u8bb0\u7684\u6a21\u578b\u67b6\u6784\" width=\"962\" height=\"828\" srcset=\"https:\/\/blog.webex.com\/wp-content\/uploads\/2021\/09\/Model-architecture-with-window-size-equal-to-two-tokens-for-TruncBiGRU.png 604w, https:\/\/blog.webex.com\/wp-content\/uploads\/2021\/09\/Model-architecture-with-window-size-equal-to-two-tokens-for-TruncBiGRU-300x258.png 300w, https:\/\/blog.webex.com\/wp-content\/uploads\/2021\/09\/Model-architecture-with-window-size-equal-to-two-tokens-for-TruncBiGRU-768x661.png 768w\" sizes=\"auto, (max-width: 962px) 100vw, 962px\" \/><\/a><p id=\"caption-attachment-373223\" class=\"wp-caption-text\">\u56fe 3. \u7a97\u53e3\u5927\u5c0f\u7b49\u4e8e TruncBiGRUFi \u7684\u4e24\u4e2a\u6807\u8bb0\u7684\u6a21\u578b\u67b6\u6784\u3002<\/p><\/div> \u00a0 \u5bf9\u4e8e\u6bcf\u4e2a\u8bcd\u8bed\uff0c\u6a21\u578b\u9884\u6d4b\u5176\u5927\u5199\u5b57\u6bcd\u548c\u8be5\u8bcd\u8bed\u540e\u7684\u6807\u70b9\u7b26\u53f7\u3002\u4e3a\u4e86\u66f4\u597d\u5730\u540c\u6b65\u8fd9\u4e24\u4e2a\u8f93\u51fa\u5e76\u9884\u6d4b\u5927\u5199\u5b57\u6bcd\uff0c\u6211\u4eec\u8fd8\u9700\u8981\u77e5\u9053\u524d\u4e00\u4e2a\u6807\u8bb0\u7684\u5d4c\u5165\u60c5\u51b5\uff08\u4ee5\u6062\u590d\u524d\u4e00\u6b65\u7684\u6807\u70b9\u7b26\u53f7\uff09\u3002\u518d\u52a0\u4e0a\u4e00\u4e2a\u81ea\u5b9a\u4e49\u7684\u635f\u5931\u51fd\u6570\uff08\u89c1\u4e0b\u4e00\u90e8\u5206\uff09\uff0c\u8fd9\u4f7f\u6211\u4eec\u80fd\u591f\u907f\u514d\u5728\u53e5\u9996\u4ea7\u751f\u5c0f\u5199\u5b57\u6bcd\u7684\u60c5\u51b5\u3002\u5bf9\u4e8e\u6807\u70b9\u7b26\u53f7\u7684\u9884\u6d4b\uff0c\u5f97\u5230\u4e0b\u4e00\u4e2a\u8bcd\u8bed\u7684\u5927\u5199\u9884\u6d4b\u4e5f\u5f88\u6709\u5e2e\u52a9\u3002\u8fd9\u5c31\u662f\u6211\u4eec\u628a\u5f53\u524d\u548c\u4e0b\u4e00\u4e2a\u5d4c\u5165\u8fde\u63a5\u8d77\u6765\u7684\u539f\u56e0\u3002\u7528\u4e8e\u6807\u70b9\u7b26\u53f7\u7684\u8f93\u51fa\u5c42\u9884\u6d4b\u6240\u6709\u6807\u70b9\u7b26\u53f7\u7684\u5206\u5e03\u3002\u5bf9\u4e8e\u6211\u4eec\u7684\u6a21\u578b\uff0c\u5b83\u662f\u4e00\u4e2a\u96c6\u5408\uff1a<\/p>\n<p><em>\u53e5\u53f7 <\/em>\u2013 \u53e5\u5b50\u4e2d\u95f4\u7684\u53e5\u53f7\uff0c\u5e76\u4e0d\u4e00\u5b9a\u610f\u5473\u7740\u4e0b\u4e00\u4e2a\u8bcd\u8bed\u8981\u5927\u5199\uff08\u201ca.m.\u201d\u3001\u201cD.C.\u201d\u7b49\uff09<\/p>\n<p><em>\u9017\u53f7<\/em><\/p>\n<p><em>\u95ee\u53f7<\/em><\/p>\n<p><em>\u7701\u7565\u53f7<\/em><\/p>\n<p><em>\u5192\u53f7<\/em><\/p>\n<p><em>\u7834\u6298\u53f7<\/em><\/p>\n<p><em>\u53e5\u672b\u53e5\u53f7<\/em> &#8211; \u53e5\u5b50\u672b\u5c3e\u7684\u53e5\u53f7<\/p>\n<p>\u00a0 \u5bf9\u4e8e\u5927\u5199\uff0c\u6211\u4eec\u5206\u4e3a\u56db\u7c7b\uff1a<\/p>\n<p><em>\u5c0f\u5199<\/em><\/p>\n<p><em>\u5927\u5199<\/em> \u2013 \u6240\u6709\u5b57\u6bcd\u5747\u5927\u5199\uff08\u201cIEEE\u201d\u3001\u201cNASA\u201d\u7b49\uff09<\/p>\n<p><em>\u5927\u5199<\/em><\/p>\n<p><em>\u5927\u5c0f\u5199\u6df7\u5408<\/em> \u2013 \u5982\u5355\u8bcd\u201ciPhone\u201d<\/p>\n<p><em>\u9996\u5b57\u6bcd\u5927\u5199<\/em> &#8211; \u53e5\u5b50\u5f00\u5934\u7684\u5355\u8bcd<\/p>\n<p>\u989d\u5916\u7684\u7c7b\u522b\u201c<em>\u9996\u5b57\u6bcd\u5927\u5199\u201d\u548c<\/em>\u201c<em>\u53e5\u672b\u53e5\u53f7<\/em>\u201d\u4e4d\u4e00\u770b\u53ef\u80fd\u662f\u591a\u4f59\u7684\uff0c\u4f46\u5b83\u4eec\u6709\u52a9\u4e8e\u63d0\u9ad8\u4e0e\u5927\u5199\u548c\u6807\u70b9\u7b26\u53f7\u6709\u5173\u7684\u7b54\u6848\u7684\u4e00\u81f4\u6027\u3002\u201c<em>\u53e5\u672b\u53e5\u53f7\u201d<\/em>\u610f\u5473\u7740\u4e0b\u4e00\u4e2a\u5927\u5199\u5b57\u6bcd\u7684\u7b54\u6848\u4e0d\u80fd\u662f\u201c<em>\u5c0f\u5199\u201d<\/em>\uff0c\u800c\u201c<em>\u9996\u5b57\u6bcd\u5927\u5199\u201d<\/em>\u610f\u5473\u7740\u524d\u9762\u7684\u6807\u70b9\u7b26\u53f7\u662f\u4e00\u4e2a\u201c<em>\u53e5\u5c3e\u53e5\u53f7<\/em>\u201d\u6216\u95ee\u53f7\u3002\u8fd9\u4e9b\u7c7b\u522b\u5728\u635f\u5931\u51fd\u6570\u4e2d\u8d77\u7740\u91cd\u8981\u4f5c\u7528\u3002\u635f\u5931\u51fd\u6570\uff1a\u6211\u4eec\u9700\u8981\u540c\u65f6\u4f18\u5316\u5927\u5199\u5b57\u6bcd\u548c\u6807\u70b9\u7b26\u53f7\u3002\u4e3a\u6b64\uff0c\u6211\u4eec\u4f7f\u7528\u4e00\u4e2a\u5e26\u7cfb\u6570\u7684\u5bf9\u6570\u635f\u5931\u51fd\u6570\u4e4b\u548c\uff1a<a href=\"https:\/\/blog.webex.com\/wp-content\/uploads\/2021\/09\/Loss-function.png\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-373233\" src=\"https:\/\/blog.webex.com\/wp-content\/uploads\/2021\/09\/Loss-function.png\" alt=\"\u635f\u5931\u51fd\u6570\" width=\"668\" height=\"38\" srcset=\"https:\/\/blog.webex.com\/wp-content\/uploads\/2021\/09\/Loss-function.png 668w, https:\/\/blog.webex.com\/wp-content\/uploads\/2021\/09\/Loss-function-300x17.png 300w\" sizes=\"auto, (max-width: 668px) 100vw, 668px\" \/><\/a> \u7136\u800c\uff0c\u5982\u524d\u6240\u8ff0\uff0c\u795e\u7ecf\u7f51\u7edc\u7684\u8f93\u51fa\u53ef\u80fd\u4e0d\u662f\u5b8c\u5168\u76f8\u5173\u7684\u3002\u4f8b\u5982\uff0c\u6807\u70b9\u5668\u53ef\u80fd\u9884\u6d4b\u5f53\u524d\u8bcd\u8bed\u7684\u201c<em>\u53e5\u672b\u53e5\u53f7\u201d<\/em>\uff0c\u800c\u5927\u5199\u5668\u5374\u6ca1\u6709\u9884\u6d4b\u4e0b\u4e00\u4e2a\u6807\u8bb0\u7684\u201c<em>\u9996\u5b57\u6bcd\u5927\u5199<\/em>\u201d\u3002\u8fd9\u79cd\u7c7b\u578b\u7684\u9519\u8bef\u867d\u7136\u5f88\u5c11\u89c1\uff0c\u4f46\u53ef\u80fd\u5f88\u9192\u76ee\u3002\u4e3a\u4e86\u5904\u7406\u8fd9\u4e2a\u95ee\u9898\uff0c\u6211\u4eec\u5728\u635f\u5931\u51fd\u6570\u4e2d\u4f7f\u7528\u4e00\u4e2a\u989d\u5916\u7684\u60e9\u7f5a\u9879\u6765\u60e9\u7f5a\u8fd9\u79cd\u7c7b\u578b\u7684\u9519\u8bef\uff1a<a href=\"https:\/\/blog.webex.com\/wp-content\/uploads\/2021\/09\/disagreement-penalty.png\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-373243\" src=\"https:\/\/blog.webex.com\/wp-content\/uploads\/2021\/09\/disagreement-penalty.png\" alt=\"\u4e0d\u4e00\u81f4\u60e9\u7f5a\" width=\"904\" height=\"68\" srcset=\"https:\/\/blog.webex.com\/wp-content\/uploads\/2021\/09\/disagreement-penalty.png 904w, https:\/\/blog.webex.com\/wp-content\/uploads\/2021\/09\/disagreement-penalty-300x23.png 300w, https:\/\/blog.webex.com\/wp-content\/uploads\/2021\/09\/disagreement-penalty-768x58.png 768w\" sizes=\"auto, (max-width: 904px) 100vw, 904px\" \/><\/a> \u7b2c\u4e00\u4e2a\u9879\u5bf9\u5e94\u7684\u662f\u5728\u975e\u201c<em>\u53e5\u672b\u53e5\u53f7\u201d<\/em>\u540e\u51fa\u73b0\u201c<em>\u9996\u5b57\u6bcd\u5927\u5199<\/em>\u201d\u7684\u6982\u7387\uff0c\u7b2c\u4e8c\u4e2a\u9879\u5bf9\u5e94\u7684\u662f\u5728\u201c<em>\u53e5\u672b\u53e5\u53f7\u201d<\/em>\u540e\u6ca1\u6709\u201c<em>\u9996\u5b57\u6bcd\u5927\u5199<\/em>\u201d\u7684\u6982\u7387\u3002\u8fd9\u4e2a\u60e9\u7f5a\u5bf9\u53d1\u751f\u9519\u8bef\u7684\u6807\u8bb0\u6c42\u548c\u3002\u6b64\u5916\uff0c\u6211\u4eec\u5c06\u524d\u4e00\u5c42\u7684\u4e24\u4e2a\u8fde\u7eed\u7684\u5f20\u91cf\u4f20\u9012\u7ed9 softmax \u5c42\u3002\u9274\u4e8e\u6b64\uff0c\u6211\u4eec\u53ef\u4ee5\u6709\u6548\u5730\u51cf\u5c11\u60e9\u7f5a\u9879\u3002\u6700\u540e\uff0c\u6211\u4eec\u5f97\u5230\u635f\u5931\u51fd\u6570\uff1a<a href=\"https:\/\/blog.webex.com\/wp-content\/uploads\/2021\/09\/Loss-function-1.png\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-373253\" src=\"https:\/\/blog.webex.com\/wp-content\/uploads\/2021\/09\/Loss-function-1.png\" alt=\"\u635f\u5931\u51fd\u6570\" width=\"652\" height=\"60\" srcset=\"https:\/\/blog.webex.com\/wp-content\/uploads\/2021\/09\/Loss-function-1.png 652w, https:\/\/blog.webex.com\/wp-content\/uploads\/2021\/09\/Loss-function-1-300x28.png 300w\" sizes=\"auto, (max-width: 652px) 100vw, 652px\" \/><\/a><\/p>\n<h2>\u8bad\u7ec3<\/h2>\n<p>\u5bf9\u4e8e\u8bad\u7ec3\uff0c\u6211\u4eec\u4f7f\u7528 Webex \u5185\u90e8\u4f1a\u8bae\u7684\u6587\u672c\u8f6c\u5f55\u548c\u7ef4\u57fa\u767e\u79d1\u7684\u6587\u672c\u6570\u636e\u3002\u9996\u5148\uff0c\u5bf9\u8bad\u7ec3\u6570\u636e\u8fdb\u884c\u6e05\u7406\uff0c\u5e76\u5c06\u5176\u5206\u5272\u6210\u53e5\u5b50\u3002\u5728\u8bad\u7ec3\u8fc7\u7a0b\u4e2d\uff0c\u6bcf\u4e2a\u6837\u672c\u7531\u8fde\u7eed\u7684\u53e5\u5b50\u751f\u6210\uff0c\u5e76\u4ece\u56fa\u5b9a\u7684\u5206\u5e03\u622a\u53d6\u5230\u968f\u673a\u957f\u5ea6\u3002\u8fd9\u4f7f\u5f97\u6a21\u578b\u53ef\u4ee5\u5728\u8bad\u7ec3\u8fc7\u7a0b\u4e2d\u770b\u5230\u88c1\u526a\u597d\u7684\u77ed\u8bed\uff0c\u4ece\u800c\u4f7f\u6a21\u578b\u53ef\u4ee5\u5728\u63a8\u7406\u8fc7\u7a0b\u4e2d\u5904\u7406\u4e2d\u95f4\u7ed3\u679c\u3002\u63a5\u4e0b\u6765\uff0c\u6211\u4eec\u5728\u5927\u7ea6 300 \u5146\u5b57\u8282\u7684\u7ef4\u57fa\u767e\u79d1\u6587\u672c\u4e0a\u8bad\u7ec3\u4e00\u4e2a\u6a21\u578b\uff0c\u7136\u540e\u5728 Webex \u4f1a\u8bae\u8f6c\u5f55\u4e0a\u5bf9\u5176\u8fdb\u884c\u5fae\u8c03\u3002\u5bf9\u7ef4\u57fa\u767e\u79d1\u6587\u672c\u7684\u9884\u8bad\u7ec3\u6709\u52a9\u4e8e\u6539\u5584\u6240\u6709\u7684\u6807\u70b9\u7b26\u53f7\u7c7b\u522b\uff0c\u540c\u65f6\u5bf9\u5927\u5199\u5b57\u6bcd\u7c7b\u522b\u5c24\u5176\u6709\u7528\u3002\u6211\u4eec\u731c\u6d4b\u8fd9\u662f\u7531\u4e8e\u7ef4\u57fa\u767e\u79d1\u8bed\u6599\u5e93\u4e2d\u5b58\u5728\u5927\u91cf\u7684\u4e13\u6709\u540d\u8bcd\u3002\u6211\u4eec\u5c06\u76f8\u540c\u7684\u6570\u636e\u51c6\u5907\u5e94\u7528\u4e8e\u6211\u4eec\u7684\u8bc4\u4f30\u96c6\uff0c\u5c06\u53e5\u5b50\u8fde\u63a5\u8d77\u6765\uff0c\u5e76\u5c06\u5b83\u4eec\u622a\u65ad\u4e3a\u968f\u673a\u957f\u5ea6\u3002\u8fd9\u4f7f\u6211\u4eec\u80fd\u591f\u8861\u91cf\u6211\u4eec\u53ef\u80fd\u5728\u4e34\u65f6\u8f6c\u5f55\u72b6\u6001\u4e2d\u770b\u5230\u7684\u5185\u5bb9\u7684\u51c6\u786e\u6027\u3002<\/p>\n<h2>\u7ed3\u8bed<\/h2>\n<p>\u4f7f\u7528\u76f8\u5bf9\u7b80\u5355\u7684\u6280\u672f\u548c\u67b6\u6784\u7684\u4e00\u4e9b\u5b9a\u5236\uff0c\u4f8b\u5982\u622a\u65ad\u7684 GRU \u548c\u635f\u5931\u51fd\u6570\u4e2d\u7684\u989d\u5916\u60e9\u7f5a\uff0c\u6211\u4eec\u6784\u5efa\u4e86\u4e00\u4e2a\u53ef\u4ee5\u5728\u7ebf\u8fd0\u884c\u7684\u6a21\u578b\u3002\u901a\u8fc7\u5b9e\u65f6\u7684\u6807\u70b9\u7b26\u53f7\u548c\u5927\u5199\u5b57\u6bcd\uff0c\u5b9e\u65f6\u5b57\u5e55\u7684\u9605\u8bfb\u4f53\u9a8c\u5f97\u5230\u4e86\u660e\u663e\u6539\u5584\u3002<strong>\u53c2\u8003\u8d44\u6599 <\/strong> [1] A. Gravano, M. Jansche, and M. Bacchiani, \u201cRestoring punctuation and capitalization in transcribed speech,\u201d in ICASSP 2009, 2009, pp. 4741\u20134744. [2] Monica Sunkara, Srikanth Ronanki, Kalpit Dixit, Sravan Bodapati, Katrin Kirchhoff, \u201cRobust Prediction of Punctuation and Truecasing for Medical ASR\u201d [3] Tilk, Ottokar &#038; Alum\u00e4e, Tanel. (2016). Bidirectional Recurrent Neural Network with Attention Mechanism for Punctuation Restoration. 3047-3051. 10.21437\/Interspeech.2016-1517. [4] Vardaan Pahuja, Anirban Laha, Shachar Mirkin, Vikas Raykar, Lili Kotlerman, Guy Lev \u201cJoint Learning of Correlated Sequence Labelling Tasks Using Bidirectional Recurrent Neural Networks\u201d [5] Wang, Peilu &#038; Qian, Yao &#038; Soong, Frank &#038; He, Lei &#038; Zhao, Hai. (2015). Part-of-Speech Tagging with Bidirectional Long Short-Term Memory Recurrent Neural Network. [6] Lita, Lucian &#038; Ittycheriah, Abe &#038; Roukos, Salim &#038; Kambhatla, Nanda. (2003). tRuEcasIng. 10.3115\/1075096.1075116. [7] https:\/\/github.com\/google\/sentencepiece <a href=\"https:\/\/www.webex.com\/video-conferencing\">\u6ce8\u518c Webex<\/a> \u8bbf\u95ee\u6211\u4eec\u7684<a href=\"https:\/\/www.webex.com\/\">\u4e3b\u9875<\/a>\u6216\u76f4\u63a5<a href=\"https:\/\/www.webex.com\/contact-us.html\">\u8054\u7cfb\u6211\u4eec<\/a>\uff0c\u4ee5\u83b7\u5f97\u5e2e\u52a9\u3002<span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:160,&quot;335559740&quot;:259}\"><a href=\"https:\/\/www.webex.com\/?utm_source=Influence&#038;utm_medium=EarnedContent&#038;utm_campaign=FutureOfWork\">\u70b9\u51fb\u6b64\u5904<\/a>\u8be6\u7ec6\u4e86\u89e3 Webex \u63d0\u4f9b\u7684\u4ea7\u54c1\u548c\u670d\u52a1\uff0c\u5e76\u6ce8\u518c\u514d\u8d39\u8d26\u6237\u3002<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u7b80\u4ecb \u81ea\u52a8\u8bed\u97f3\u8bc6\u522b (ASR) \u7cfb\u7edf\u63d0\u4f9b [&hellip;]<\/p>\n","protected":false},"author":5546,"featured_media":373194,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"footnotes":""},"categories":[1533],"tags":[4752,4568],"class_list":["post-373814","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-engineering-zh-hans","tag-4752","tag-4568"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>\u81ea\u52a8\u8bed\u97f3\u8bc6\u522b\u7cfb\u7edf\u7684\u540e\u5904\u7406 | Welcome to the Video Conferencing Hub<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/blog.webex.com\/zh-hans\/engineering-zh-hans\/\u81ea\u52a8\u8bed\u97f3\u8bc6\u522b\u7cfb\u7edf\u7684\u540e\u5904\u7406\/\" \/>\n<meta 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