1ãåç±»åèç±»çåºå«ï¼
Classification (åç±»)ï¼å¯¹äºä¸ä¸ªclassifierï¼é常éè¦ä½ åè¯å®âè¿ä¸ªä¸è¥¿è¢«å为ææç±»âè¿æ ·ä¸äºä¾åï¼çæ³æ
åµä¸ï¼ä¸ä¸ª classifier ä¼ä»å®å¾å°çè®ç»éä¸è¿è¡âå¦ä¹ âï¼ä»èå
·å¤å¯¹æªç¥æ°æ®è¿è¡åç±»çè½åï¼è¿ç§æä¾è®ç»æ°æ®çè¿ç¨é常å«åsupervised learning (çç£å¦ä¹ )ï¼
Clustering (èç±»)ï¼ç®åå°è¯´å°±æ¯æç¸ä¼¼çä¸è¥¿åå°ä¸ç»ï¼èç±»çæ¶åï¼æ们并ä¸å
³å¿æä¸ç±»æ¯ä»ä¹ï¼æ们éè¦å®ç°çç®æ åªæ¯æç¸ä¼¼çä¸è¥¿èå°ä¸èµ·ãå æ¤ï¼ä¸ä¸ªèç±»ç®æ³é常åªéè¦ç¥éå¦ä½è®¡ç®ç¸ä¼¼åº¦å°±å¯ä»¥å¼å§å·¥ä½äºï¼å æ¤ clustering é常并ä¸éè¦ä½¿ç¨è®ç»æ°æ®è¿è¡å¦ä¹ ï¼è¿å¨Machine Learningä¸è¢«ç§°ä½unsupervised learning (æ çç£å¦ä¹ ).
2ã常è§çåç±»ä¸èç±»ç®æ³
æè°åç±»ï¼ç®åæ¥è¯´ï¼å°±æ¯æ ¹æ®ææ¬çç¹å¾æå±æ§ï¼ååå°å·²æçç±»å«ä¸ãå¦å¨èªç¶è¯è¨å¤çNLPä¸ï¼æ们ç»å¸¸æå°çææ¬å类便就æ¯ä¸ä¸ªåç±»é®é¢ï¼ä¸è¬ç模å¼åç±»æ¹æ³é½å¯ç¨äºææ¬åç±»ç 究ã常ç¨çåç±»ç®æ³å
æ¬ï¼å³çæ åç±»æ³ï¼æ´ç´ è´å¶æ¯åç±»ç®æ³(native Bayesian classifier)ãåºäºæ¯æåéæº(SVM)çåç±»å¨ï¼ç¥ç»ç½ç»æ³ï¼k-æè¿é»æ³(k-nearestneighborï¼kNN)ï¼æ¨¡ç³åç±»æ³ççã
åç±»ä½ä¸ºä¸ç§çç£å¦ä¹ æ¹æ³ï¼è¦æ±å¿
é¡»äºå
æç¡®ç¥éå个类å«çä¿¡æ¯ï¼å¹¶ä¸æè¨ææå¾
å类项é½æä¸ä¸ªç±»å«ä¸ä¹å¯¹åºãä½æ¯å¾å¤æ¶åä¸è¿°æ¡ä»¶å¾ä¸å°æ»¡è¶³ï¼å°¤å
¶æ¯å¨å¤çæµ·éæ°æ®çæ¶åï¼å¦æéè¿é¢å¤ç使å¾æ°æ®æ»¡è¶³åç±»ç®æ³çè¦æ±ï¼å代价é常大ï¼è¿æ¶åå¯ä»¥èè使ç¨èç±»ç®æ³ã
èKåå¼(K-mensclustering)èç±»åæ¯æå
¸åçèç±»ç®æ³(å½ç¶ï¼é¤æ¤ä¹å¤ï¼è¿æå¾å¤è¯¸å¦å±äºååæ³Kä¸å¿ç¹ï¼K-MEDOIDSï¼ç®æ³ãCLARANSç®æ³ï¼å±äºå±æ¬¡æ³çBIRCHç®æ³ãCUREç®æ³ãCHAMELEONç®æ³çï¼åºäºå¯åº¦çæ¹æ³ï¼DBSCANç®æ³ãOPTICSç®æ³ãDENCLUEç®æ³çï¼åºäºç½æ ¼çæ¹æ³ï¼STINGç®æ³ãCLIQUEç®æ³ãWAVE-CLUSTERç®æ³ï¼åºäºæ¨¡åçæ¹æ³)ã
温馨提示:答案为网友推荐,仅供参考