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niliu
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- ×¢²á: 2005-07-07
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¡ï ¡ï ¡ï
yuhuobuku(½ð±Ò+2,VIP+0):лл¸úÌû½»Á÷ 6-13 19:13
cloudsea163(½ð±Ò+1,VIP+0): 6-14 19:02
yuhuobuku(½ð±Ò+2,VIP+0):лл¸úÌû½»Á÷ 6-13 19:13
cloudsea163(½ð±Ò+1,VIP+0): 6-14 19:02
| ºÃÏñÊÇCODESSAÈí¼þÀïÃæµÄÒ»ÖÖ·½·¨£¬¾ßÌåÔõôʵÏÖ²»Çå³þ¡£ |
2Â¥2009-06-13 18:50:27
niliu
Ìú¸Ëľ³æ (ÖøÃûдÊÖ)
- Ä£ÄâEPI: 2
- Ó¦Öú: 8 (Ó×¶ùÔ°)
- ¹ó±ö: 1
- ½ð±Ò: 9755.1
- ºì»¨: 10
- Ìû×Ó: 1263
- ÔÚÏß: 467Сʱ
- ³æºÅ: 78849
- ×¢²á: 2005-07-07
- רҵ: ÀíÂۺͼÆË㻯ѧ
¡ï ¡ï ¡ï ¡ï
xuefei06(½ð±Ò+2,VIP+0):3Q£¡ 6-13 18:57
cloudsea163(½ð±Ò+2,VIP+0): 6-14 19:02
cloudsea163(½ð±Ò+2):лл 2010-02-27 15:22
xuefei06(½ð±Ò+2,VIP+0):3Q£¡ 6-13 18:57
cloudsea163(½ð±Ò+2,VIP+0): 6-14 19:02
cloudsea163(½ð±Ò+2):лл 2010-02-27 15:22
|
CODESSAÍøÕ¾ÕÒµ½µÄ£º The heuristic method for descriptor selection proceeds with a pre-selection of descriptors by sequentially eliminating descriptors that do not match any of the following criteria: (i) Fisher F-criteria greater than 1.0; (ii) R2 value less than a value defined at the start; (iii) Student¡¯s t-criterion less than a defined value; (iv) duplicate descriptors having a higher squared intercorrelation coefficient than a predetermined level (retaining the descriptor with higher R2 with reference to the property). The descriptors that remain are then listed in decreasing order of correlation coefficients when used in global search for 2-parameter correlations. Each significant 2-parameter correlation by F-criteria is recursively expanded to an n-parameter correlation till the normalized F-criteria remains greater than the startup value. The best N correlations by R2, as well as by F-criterion, are saved. |
3Â¥2009-06-13 18:56:31
cloudsea163
½ð³æ (ÖøÃûдÊÖ)
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- ×¢²á: 2008-02-22
- ÐÔ±ð: GG
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4Â¥2009-06-14 19:02:49














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