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yupeifeng

½ð³æ (СÓÐÃûÆø)

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ËùÇó·½³ÌÄ£ÐÍΪdc/dt=-k*(c-5.79)^(2/3)*(6.79-c)^2,
ʵÑéÊý¾ÝΪ£º£¨t,c£©
0        6.79
1        6.39
2        6.25
4        6.1
12        5.9
22        5.8
48        5.79
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dingd

Ìú¸Ëľ³æ (Ö°Òµ×÷¼Ò)

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2Â¥2012-08-22 20:38:52
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yupeifeng

½ð³æ (СÓÐÃûÆø)

ÒýÓûØÌû:
2Â¥: Originally posted by dingd at 2012-08-22 20:38:52
ºÃºÃ¼ì²éÏ£¬ÒªÃ´¹«Ê½ÒªÃ´µÚÒ»¸öÊý¾Ý²»¶Ô¡£

Ŷ£¬¶Ô²»Æð¾ÍÊǹ«Ê½Ð´´íÁË¡£dc/dt=-k*(6.79-c)^(2/3)*(c-5.79)^2,
Âé·³ÔÙ°ïÎÒ¿´¿´°¡
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3Â¥2012-08-22 21:14:06
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

dingd

Ìú¸Ëľ³æ (Ö°Òµ×÷¼Ò)

¡¾´ð°¸¡¿Ó¦Öú»ØÌû

¡ï ¡ï ¡ï ¡ï
csgt0: ½ð±Ò+1, ¶àлӦÖú 2012-08-23 09:17:04
yupeifeng: ½ð±Ò+3 2012-08-23 11:37:11
¹«Ê½ÏîÖС°-k*(6.79-c)^(2/3)*(c-5.79)^2¡±µÄ¡°(6.79-c)^(2/3)¡±²¿·Ö»¹ÊÇÓÐÎÊÌ⣬cµÄ³õÖµ¾ÍΪ6.79£¬¼ÆËã»áµ¼ÖÂc¾ùΪ0£¬¹«Ê½ÖеÄ6.97ÒªÂÔ´óЩ²ÅÄܼÆË㣬Èç¸Ä³É6.7901,1stOpt¼ÆË㣺
CODE:
Variable t,c;
ODEFunction c'=-k*(6.7901-c)^(2/3)*(c-5.79)^2;
Data;
//ʵÑéÊý¾ÝΪ£º£¨t,c£©
0        6.79
1        6.39
2        6.25
4        6.1
12        5.9
22        5.8
48        5.79

¾ù·½²î(RMSE): 0.0919079572017753
²Ð²îƽ·½ºÍ(SSE): 0.0506824355820202
Ïà¹ØÏµÊý(R): 0.943022305148889
Ïà¹ØÏµÊý֮ƽ·½(R^2): 0.889291068008324
¾ö¶¨ÏµÊý(DC): 0.836446720006389

²ÎÊý                  ×î¼Ñ¹ÀËã
--------------------        -------------
k        2.09867948231536

====== Êä³ö½á¹û =====

Îļþ£ºÊý¾ÝÎļþ - 1
No        t        Ä¿±êc        ¼ÆËãc
1        1        6.39        6.53039604890421
2        2        6.25        6.17574209892687
3        4        6.1        5.95501287238458
4        12        5.9        5.83562127294684
5        22        5.8        5.81355598856332
6        48        5.79        5.80036805985891
4Â¥2012-08-22 21:57:43
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

yupeifeng

½ð³æ (СÓÐÃûÆø)

ÒýÓûØÌû:
4Â¥: Originally posted by dingd at 2012-08-22 21:57:43
¹«Ê½ÏîÖС°-k*(6.79-c)^(2/3)*(c-5.79)^2¡±µÄ¡°(6.79-c)^(2/3)¡±²¿·Ö»¹ÊÇÓÐÎÊÌ⣬cµÄ³õÖµ¾ÍΪ6.79£¬¼ÆËã»áµ¼ÖÂc¾ùΪ0£¬¹«Ê½ÖеÄ6.97ÒªÂÔ´óЩ²ÅÄܼÆË㣬Èç¸Ä³É6.7901,1stOpt¼ÆË㣺

Variable t,c;
ODEFunction c' ...

ºÃÏñÎÒÒÔǰÎʹýÄãÕâ¸öÎÊÌ⣬ÎÒµÄ1sopt°æ±¾Ì«µÍ£¬²»ÄÜÇó΢·Ö·½³Ì£¬ÎÒ»¹ÓÐÆäËûÊý¾ÝºÍÄ£ÐÍ£¬ÐèÒªÇó¡£ÕâЩֻÊÇÆäÖÐÒ»¸ö£¬Äã¿ÉÒÔ°ïÎÒÔËÐÐÏÂÆäËûµÄÂð£¿
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5Â¥2012-08-23 11:36:59
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