{"id":220623,"date":"2024-05-11T18:22:27","date_gmt":"2024-05-11T10:22:27","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/220623.html"},"modified":"2024-05-11T18:22:34","modified_gmt":"2024-05-11T10:22:34","slug":"word2vec%e6%98%af%e5%a6%82%e4%bd%95%e5%be%97%e5%88%b0%e8%af%8d%e5%90%91%e9%87%8f%e7%9a%84","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/220623.html","title":{"rendered":"word2vec\u662f\u5982\u4f55\u5f97\u5230\u8bcd\u5411\u91cf\u7684"},"content":{"rendered":"

\"word2vec\u662f\u5982\u4f55\u5f97\u5230\u8bcd\u5411\u91cf\u7684\"<\/p>\n

Word2Vec\u901a\u8fc7\u8bad\u7ec3\u795e\u7ecf\u7f51\u7edc\u6a21\u578b\u83b7\u53d6\u8bcd\u5411\u91cf\uff0c\u800c\u8fd9\u4e00\u8fc7\u7a0b\u4f9d\u8d56\u4e8e\u4e24\u4e2a\u6838\u5fc3\u7b97\u6cd5\uff1a\u8fde\u7eed\u8bcd\u888b\u6a21\u578b\uff08CBOW\uff09\u548cSkip-Gram\u6a21\u578b\u3001\u5229\u7528\u8fd9\u4e24\u79cd\u6a21\u578b\uff0c\u80fd\u591f\u6709\u6548\u6355\u6349\u8bcd\u8bed\u95f4\u7684\u4e0a\u4e0b\u6587\u5173\u7cfb\u548c\u8bed\u4e49\u4fe1\u606f\u3002<\/strong> Word2Vec\u901a\u8fc7\u8fd9\u4e24\u79cd\u6a21\u578b\u7684\u8bad\u7ec3\uff0c\u6700\u7ec8\u5f97\u5230\u6bcf\u4e2a\u8bcd\u7684\u7a20\u5bc6\u5411\u91cf\uff08\u8bcd\u5411\u91cf\uff09\u3002\u5728\u8fd9\u4e24\u79cd\u6a21\u578b\u4e2d\uff0cSkip-Gram\u6a21\u578b\u56e0\u5176\u5728\u5c0f\u578b\u6570\u636e\u96c6\u4e0a\u8868\u73b0\u51fa\u8272\u4ee5\u53ca\u5bf9\u4f4e\u9891\u8bcd\u5904\u7406\u80fd\u529b\u5f3a\u7b49\u4f18\u70b9\uff0c\u7279\u522b\u503c\u5f97\u6df1\u5165\u63a2\u8ba8\u3002<\/p>\n<\/p>\n

Skip-Gram\u6a21\u578b\u7684\u5de5\u4f5c\u539f\u7406\u662f\u7ed9\u5b9a\u4e00\u4e2a\u76ee\u6807\u8bcd\u6c47\uff0c\u9884\u6d4b\u5176\u4e0a\u4e0b\u6587\u4e2d\u7684\u8bcd\u6c47\u3002\u6a21\u578b\u7684\u8bad\u7ec3\u8fc7\u7a0b\u57fa\u4e8e\u8fd9\u6837\u4e00\u4e2a\u5047\u8bbe\uff1a\u5177\u6709\u76f8\u4f3c\u4e0a\u4e0b\u6587\u7684\u8bcd\u6c47\u610f\u5473\u7740\u5b83\u4eec\u5728\u5411\u91cf\u7a7a\u95f4\u4e2d\u4e5f\u5e94\u8be5\u76f8\u4e92\u63a5\u8fd1\u3002<\/strong> \u8fd9\u4e00\u5047\u8bbe\u7acb\u8db3\u4e8e\u5206\u5e03\u5047\u8bf4\uff0c\u5373\u5904\u4e8e\u76f8\u4f3c\u4e0a\u4e0b\u6587\u4e2d\u7684\u8bcd\u8bed\u5177\u6709\u76f8\u8fd1\u7684\u8bed\u4e49\u3002\u5728\u8bad\u7ec3\u671f\u95f4\uff0c\u6a21\u578b\u9010\u6b65\u8c03\u6574\u8bcd\u5411\u91cf\uff0c\u4ee5\u6700\u5927\u5316\u76ee\u6807\u8bcd\u6c47\u4e0e\u5176\u4e0a\u4e0b\u6587\u8bcd\u6c47\u5171\u73b0\u7684\u6982\u7387\u3002\u8fd9\u4e2a\u8fc7\u7a0b\u53cd\u590d\u8fed\u4ee3\uff0c\u76f4\u81f3\u6536\u655b\u3002<\/p>\n<\/p>\n

\u4e00\u3001WORD2VEC\u7684\u57fa\u672c\u539f\u7406\u4e0e\u7ed3\u6784<\/strong><\/h3>\n<\/p>\n

Word2Vec\u662f\u4e00\u79cd\u5229\u7528\u795e\u7ecf\u7f51\u7edc\u5c06\u8bcd\u8bed\u8868\u793a\u4e3a\u9ad8\u7ef4\u7a7a\u95f4\u4e2d\u7684\u5411\u91cf\u7684\u6a21\u578b\u3002\u5176\u57fa\u672c\u539f\u7406\u662f\u901a\u8fc7\u5b66\u4e60\u8bcd\u8bed\u7684\u4e0a\u4e0b\u6587\u5173\u7cfb\u6765\u6355\u6349\u8bcd\u8bed\u7684\u8bed\u4e49\u4fe1\u606f\u3002Word2Vec\u6a21\u578b\u6709\u4e24\u79cd\u53d8\u4f53\uff1a\u8fde\u7eed\u8bcd\u888b\uff08CBOW\uff09\u548cSkip-Gram\u3002CBOW\u6a21\u578b\u901a\u8fc7\u4e0a\u4e0b\u6587\u9884\u6d4b\u5f53\u524d\u8bcd\uff0c\u800cSkip-Gram\u6a21\u578b\u5219\u662f\u7ed9\u5b9a\u5f53\u524d\u8bcd\u6765\u9884\u6d4b\u5176\u4e0a\u4e0b\u6587\u3002<\/p>\n<\/p>\n

1. \u8fde\u7eed\u8bcd\u888b\u6a21\u578b\uff08CBOW\uff09<\/strong><\/p>\n<\/p>\n

CBOW\u6a21\u578b\u7684\u76ee\u6807\u662f\u6839\u636e\u8bcd\u7684\u4e0a\u4e0b\u6587\u6765\u9884\u6d4b\u5f53\u524d\u8bcd\u3002\u5728\u8bad\u7ec3\u8fc7\u7a0b\u4e2d\uff0c\u6a21\u578b\u4ee5\u56fa\u5b9a\u5927\u5c0f\u7684\u7a97\u53e3\u6ed1\u8fc7\u6574\u4e2a\u6587\u672c\u6570\u636e\uff0c\u5bf9\u4e8e\u7a97\u53e3\u4e2d\u7684\u6bcf\u4e2a\u76ee\u6807\u8bcd\u6c47\uff0c\u90fd\u4f7f\u7528\u5176\u5468\u56f4\u7684\u8bcd\u6c47\u4f5c\u4e3a\u8f93\u5165\uff0c\u6765\u9884\u6d4b\u8fd9\u4e2a\u76ee\u6807\u8bcd\u6c47\u3002\u8fd9\u79cd\u65b9\u6cd5\u4f7f\u5f97\u6a21\u578b\u80fd\u591f\u5b66\u4e60\u5230\u8bcd\u548c\u5176\u4e0a\u4e0b\u6587\u4e4b\u95f4\u7684\u5173\u7cfb\u3002<\/p>\n<\/p>\n

2. Skip-Gram\u6a21\u578b<\/strong><\/p>\n<\/p>\n

\u4e0eCBOW\u6a21\u578b\u76f8\u53cd\uff0cSkip-Gram\u6a21\u578b\u5c1d\u8bd5\u6839\u636e\u5f53\u524d\u8bcd\u6765\u9884\u6d4b\u5176\u4e0a\u4e0b\u6587\u3002\u5177\u4f53\u6765\u8bf4\uff0c\u6a21\u578b\u4ee5\u4e00\u4e2a\u8bcd\u4e3a\u8f93\u5165\uff0c\u8bd5\u56fe\u9884\u6d4b\u5b83\u5728\u6587\u672c\u4e2d\u7684\u524d\u540e\u67d0\u4e2a\u7a97\u53e3\u5185\u7684\u4e0a\u4e0b\u6587\u8bcd\u3002\u8fd9\u79cd\u65b9\u6cd5\u7279\u522b\u9002\u5408\u5904\u7406\u5c11\u91cf\u6570\u636e\uff0c\u5e76\u4e14\u5bf9\u4e8e\u7f55\u89c1\u8bcd\u6c47\u4e5f\u6709\u8f83\u597d\u7684\u8868\u73b0\u3002<\/p>\n<\/p>\n

\u4e8c\u3001WORD2VEC\u7684\u8bad\u7ec3\u8fc7\u7a0b<\/strong><\/h3>\n<\/p>\n

\u8bad\u7ec3Word2Vec\u6a21\u578b\u4e3b\u8981\u6d89\u53ca\u4ee5\u4e0b\u51e0\u4e2a\u5173\u952e\u6b65\u9aa4\uff1a<\/p>\n<\/p>\n

1. \u8bcd\u6c47\u7684One-hot\u7f16\u7801<\/strong><\/p>\n<\/p>\n

\u8bad\u7ec3\u5f00\u59cb\u524d\uff0c\u9996\u5148\u5c06\u6240\u6709\u8bcd\u6c47\u8f6c\u6362\u4e3aone-hot\u7f16\u7801\u5f62\u5f0f\u3002\u5728\u8fd9\u79cd\u8868\u793a\u65b9\u5f0f\u4e2d\uff0c\u6bcf\u4e2a\u8bcd\u90fd\u88ab\u8f6c\u6362\u4e3a\u4e00\u4e2a\u5f88\u957f\u7684\u5411\u91cf\uff0c\u8fd9\u4e2a\u5411\u91cf\u4e2d\u53ea\u6709\u4e00\u4e2a\u4f4d\u7f6e\u7684\u503c\u4e3a1\uff0c\u5176\u4f59\u4f4d\u7f6e\u7684\u503c\u5747\u4e3a0\u3002<\/p>\n<\/p>\n

2. \u6743\u91cd\u7684\u521d\u59cb\u5316\u4e0e\u66f4\u65b0<\/strong><\/p>\n<\/p>\n

Word2Vec\u6a21\u578b\u7684\u6838\u5fc3\u662f\u4e00\u4e2a\u4e24\u5c42\u7684\u795e\u7ecf\u7f51\u7edc\u3002\u4e00\u5f00\u59cb\uff0c\u7f51\u7edc\u7684\u6743\u91cd\u88ab\u968f\u673a\u521d\u59cb\u5316\u3002\u968f\u540e\uff0c\u5728\u8bad\u7ec3\u8fc7\u7a0b\u4e2d\uff0c\u901a\u8fc7\u53cd\u5411\u4f20\u64ad\u7b97\u6cd5\u9010\u6b65\u8c03\u6574\u6743\u91cd\uff0c\u4ee5\u6700\u5c0f\u5316\u9884\u6d4b\u8bcd\u6c47\u4e0e\u5b9e\u9645\u8bcd\u6c47\u4e4b\u95f4\u7684\u8bef\u5dee\u3002<\/p>\n<\/p>\n

3. \u6700\u7ec8\u8bcd\u5411\u91cf\u7684\u63d0\u53d6<\/strong><\/p>\n<\/p>\n

\u7ecf\u8fc7\u591a\u6b21\u8fed\u4ee3\u540e\uff0c\u6a21\u578b\u7684\u6743\u91cd\u4f1a\u9010\u6e10\u7a33\u5b9a\u3002\u8fd9\u65f6\uff0c\u9690\u85cf\u5c42\u7684\u6743\u91cd\u77e9\u9635\u5c31\u53ef\u4ee5\u4f5c\u4e3a\u6700\u7ec8\u7684\u8bcd\u5411\u91cf\u3002<\/p>\n<\/p>\n

\u4e09\u3001WORD2VEC\u7684\u5e94\u7528\u548c\u6311\u6218<\/strong><\/h3>\n<\/p>\n

Word2Vec\u4ea7\u751f\u7684\u8bcd\u5411\u91cf\u5728\u591a\u4e2a\u81ea\u7136\u8bed\u8a00\u5904\u7406\u4efb\u52a1\u4e2d\u90fd\u6709\u5e7f\u6cdb\u5e94\u7528\uff0c\u5982\u6587\u672c\u5206\u7c7b\u3001\u60c5\u611f\u5206\u6790\u3001\u673a\u5668\u7ffb\u8bd1\u7b49\u3002\u5176\u5411\u91cf\u7684\u4e00\u4e2a\u4e3b\u8981\u4f18\u70b9\u662f\u80fd\u591f\u6355\u6349\u8bcd\u6c47\u4e4b\u95f4\u7684\u8bed\u4e49\u5173\u7cfb\uff0c\u5982\u540c\u4e49\u8bcd\u3001\u53cd\u4e49\u8bcd\u3001\u4e0a\u4e0b\u4f4d\u5173\u7cfb\u7b49\u3002<\/p>\n<\/p>\n

\u7136\u800c\uff0cWord2Vec\u6a21\u578b\u4e5f\u9762\u4e34\u4e00\u4e9b\u6311\u6218\uff0c\u5982\u5bf9\u4e8e\u591a\u4e49\u8bcd\u7684\u5904\u7406\u3001\u6a21\u578b\u8bad\u7ec3\u7684\u65f6\u95f4\u6210\u672c\u7b49\u3002<\/p>\n<\/p>\n

\u603b\u4f53\u6765\u8bf4\uff0cWord2Vec\u901a\u8fc7\u5176\u4e24\u4e2a\u6838\u5fc3\u6a21\u578b\u2014CBOW\u4e0eSkip-Gram\u2014\u5bf9\u6587\u672c\u6570\u636e\u8fdb\u884c\u8bad\u7ec3\uff0c\u80fd\u591f\u6709\u6548\u6355\u6349\u8bcd\u8bed\u4e4b\u95f4\u7684\u8bed\u4e49\u5173\u7cfb\u548c\u4e0a\u4e0b\u6587\u4fe1\u606f\uff0c\u751f\u6210\u6709\u610f\u4e49\u7684\u8bcd\u5411\u91cf\u3002\u5c3d\u7ba1\u5b58\u5728\u4e00\u4e9b\u6311\u6218\uff0c\u4f46\u5b83\u4ecd\u7136\u662f\u81ea\u7136\u8bed\u8a00\u5904\u7406\u9886\u57df\u4e2d\u4e00\u79cd\u975e\u5e38\u91cd\u8981\u548c\u5e7f\u6cdb\u5e94\u7528\u7684\u6280\u672f\u3002<\/p>\n<\/p>\n

\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n

1. Word2Vec\u662f\u901a\u8fc7\u4ec0\u4e48\u65b9\u6cd5\u5f97\u5230\u8bcd\u5411\u91cf\u7684\uff1f<\/strong> <\/p>\n

Word2Vec\u662f\u4f7f\u7528\u795e\u7ecf\u7f51\u7edc\u6a21\u578b\u6765\u5f97\u5230\u8bcd\u5411\u91cf\u7684\u3002\u5177\u4f53\u800c\u8a00\uff0c\u5b83\u4f7f\u7528\u4e86\u4e00\u79cd\u53eb\u505aSkip-gram\u6a21\u578b\u7684\u65b9\u6cd5\u3002Skip-gram\u6a21\u578b\u662f\u4e00\u4e2a\u57fa\u4e8e\u795e\u7ecf\u7f51\u7edc\u7684\u5b66\u4e60\u7b97\u6cd5\uff0c\u5b83\u901a\u8fc7\u8f93\u5165\u4e00\u4e2a\u8bcd\u6765\u9884\u6d4b\u5468\u56f4\u7684\u4e0a\u4e0b\u6587\u8bcd\u3002<\/p>\n

2. Word2Vec\u7684\u8bad\u7ec3\u8fc7\u7a0b\u662f\u600e\u6837\u7684\uff1f<\/strong><\/p>\n

Word2Vec\u7684\u8bad\u7ec3\u8fc7\u7a0b\u53ef\u4ee5\u5206\u4e3a\u4e24\u4e2a\u6b65\u9aa4\uff1a\u5efa\u7acb\u8bcd\u6c47\u8868\u548c\u8bad\u7ec3\u8bcd\u5411\u91cf\u3002<\/p>\n

\u9996\u5148\uff0cWord2Vec\u4f1a\u904d\u5386\u8bed\u6599\u5e93\u6765\u5efa\u7acb\u4e00\u4e2a\u8bcd\u6c47\u8868\u3002\u8bcd\u6c47\u8868\u4e2d\u5305\u542b\u4e86\u6240\u6709\u5728\u8bed\u6599\u5e93\u4e2d\u51fa\u73b0\u7684\u72ec\u7279\u8bcd\u6c47\u3002<\/p>\n

\u7136\u540e\uff0cWord2Vec\u4f7f\u7528Skip-gram\u6a21\u578b\u6765\u8bad\u7ec3\u8bcd\u5411\u91cf\u3002\u5728\u8fd9\u4e2a\u8fc7\u7a0b\u4e2d\uff0c\u5b83\u4f1a\u5c06\u6bcf\u4e2a\u8bcd\u6c47\u4f5c\u4e3a\u8f93\u5165\uff0c\u5e76\u5c1d\u8bd5\u9884\u6d4b\u5468\u56f4\u7684\u4e0a\u4e0b\u6587\u8bcd\u6c47\u3002\u901a\u8fc7\u53cd\u590d\u8fdb\u884c\u8fd9\u4e2a\u8bad\u7ec3\u8fc7\u7a0b\uff0cWord2Vec\u9010\u6e10\u5b66\u4f1a\u4e86\u5c06\u8bcd\u6c47\u6620\u5c04\u4e3a\u9ad8\u7ef4\u5411\u91cf\uff0c\u5176\u4e2d\u5411\u91cf\u7a7a\u95f4\u4e2d\u7684\u8ddd\u79bb\u53cd\u6620\u4e86\u8bcd\u6c47\u4e4b\u95f4\u7684\u76f8\u4f3c\u6027\u3002<\/p>\n

3. Word2Vec\u7684\u8bcd\u5411\u91cf\u6709\u4ec0\u4e48\u5e94\u7528\uff1f<\/strong><\/p>\n

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