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Common used kernel functions are Epanechnikov, Gaussian, Quartic and Triweight kernel, etc. Since the Gaussian kernel is unbounded (x¡Ê(-¡Þ,+¡Þ)), it exacerbates the cost of computing integral. Quartic and Triweight kernel are fourth and sixth function each other. ÇëÎÊ×îºóÒ»¾äÊÇʲôÒâ˼£¿ |
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zerohead
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·¢Ñ¿ÍÁ¶¹(½ð±Ò+1):лл²ÎÓë 2010-07-15 16:13:49
dllkg(½ð±Ò+5, ·ÒëEPI+1):лл°ïÖú£¡ 2010-07-16 16:03:34
·¢Ñ¿ÍÁ¶¹(½ð±Ò+1):лл²ÎÓë 2010-07-15 16:13:49
dllkg(½ð±Ò+5, ·ÒëEPI+1):лл°ïÖú£¡ 2010-07-16 16:03:34
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Common used kernel functions are Epanechnikov, Gaussian, Quartic and Triweight kernel, etc. Since the Gaussian kernel is unbounded (x¡Ê(-¡Þ,+¡Þ)), it exacerbates the cost of computing integral. Quartic and Triweight kernel are fourth and sixth function each other. ÇëÎÊ×îºóÒ»¾äÊÇʲôÒâ˼£¿ ÄãÒýµÄÕâÆªÎÄÕµÄ×÷ÕßÊÇÖйúÈË£¬¾Í²»ÄÑÃ÷°×Õâ¸öÓ¢ÎÄдµÃ¡£¡£¡£ ![]() °´ÉÏÎÄÏÂÀí£¬ËûÃǵÄÒâ˼ÊÇQuarticºÍTriweight kernel·Ö±ðÊÇËĴκÍÁù´Î·½³Ì£¬¼ÆËãÆðÀ´±È½Ï¸´ÔÓ£¬ËùÒÔËûÃÇÑ¡ÓÃÁËEpanechnikovÕâ¸ö¶þ´Î·½³Ì¡£ |
2Â¥2010-07-15 10:27:42
dllkg
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3Â¥2010-07-16 07:36:29
zerohead
½û³æ (Ö°Òµ×÷¼Ò)
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- ½ð±Ò: 8727.8
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- ÔÚÏß: 471.7Сʱ
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¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï
cfk580713(½ð±Ò+8):лл²ÎÓë¡£ 2010-11-30 12:34:17
cfk580713(½ð±Ò+8):лл²ÎÓë¡£ 2010-11-30 12:34:17
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Quartic ÊÇËĴη½µÄ Triweight (=tricube) ÊÇÁù´Î·½µÄ ÒªÃ÷°×ÕâЩ£¬ÄãµÃÒªÖªµÀʲôÊÇ Kernel regression ºÍ Kernel functions£¬Õâ¾Í²»ÊÇ·ÒëµÄÎÊÌâÀ²¡£ [ Last edited by zerohead on 2010-7-16 at 08:26 ] |
4Â¥2010-07-16 07:55:20
dllkg
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- רҵ: ¼ÆËã»úÓ¦Óü¼Êõ

5Â¥2010-07-16 16:02:47













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