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yanshima

½û³æ (ÕýʽдÊÖ)

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dingd

Ìú¸Ëľ³æ (Ö°Òµ×÷¼Ò)

¡¾´ð°¸¡¿Ó¦Öú»ØÌû

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csgt0: ½ð±Ò+2, ¶àлӦÖú 2012-11-30 14:37:37
ÓÃ1stOptÊÔÊÔ£º
CODE:
Variable sf,x,y;
Function y=a/b*sqrt((1-exp(-x/a))^2-(1-exp(-sf/a))^2);
Data;
sf           x               y
0        0.209735        11.0164
0        0.473382        29.377
0        1.10326        64.5246
0.15993        1.25993        70.8197
0.26454        1.36454        75.541
0.36882        1.46882        79.2131
0.52481        1.62481        83.4098
0.68029        1.78029        86.0328
0.78457        1.88457        89.7049
0.94022        2.04022        92.8525
1.14776        2.24776        97.0492
1.3553        2.4553        101.246
1.56284        2.66284        105.443
1.7702        2.8702        109.115
2.02895        3.12895        112.262
2.23632        3.33632        115.934
2.44369        3.54369        119.607
2.70226        3.80226        122.23
2.90946        4.00946        125.377
3.11633        4.21633        127.475
3.32336        4.42336        130.098
3.63348        4.73348        132.721
3.94343        5.04343        134.82
4.20218        5.30218        137.967
4.6154        5.7154        140.59
5.02827        6.12827        142.164
5.4927        6.5927        143.738
5.85369        6.95369        144.262

¾ù·½²î(RMSE): 1.99170567173097
²Ð²îƽ·½ºÍ(SSE): 111.072961518549
Ïà¹ØÏµÊý(R): 0.998483170696141
Ïà¹ØÏµÊý֮ƽ·½(R^2): 0.99696864216342
¾ö¶¨ÏµÊý(DC): 0.996399777519637
¿¨·½ÏµÊý(Chi-Square): 0.79983687627354
Fͳ¼Æ(F-Statistic): 7221.77591574155

²ÎÊý        ×î¼Ñ¹ÀËã
----------        -------------
a        11.9183820169949
b        0.0175715367225186

v3.JPG

2Â¥2012-11-30 14:20:44
ÒÑÔÄ   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

csgt0

ÈÙÓþ°æÖ÷ (ÖøÃûдÊÖ)

²ÊÉ«¹Òͼ

¡¾´ð°¸¡¿Ó¦Öú»ØÌû

¸Ðл²ÎÓ룬ӦÖúÖ¸Êý +1
º¯Êýд³É
CODE:
p=[a,b];
xdata=[x,sf]
ydata=p(1)/p(2)*sqrt((1-exp(-xdata(:,1)./p(1))).^2-(1-exp(-xdata(:,2)./p(1))).^2)

ÕâÖÖÐÎʽ
showmethemoney
3Â¥2012-11-30 14:37:16
ÒÑÔÄ   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

yanshima

½û³æ (ÕýʽдÊÖ)

±¾ÌûÄÚÈݱ»ÆÁ±Î

4Â¥2012-12-01 08:39:01
ÒÑÔÄ   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

csgt0

ÈÙÓþ°æÖ÷ (ÖøÃûдÊÖ)

²ÊÉ«¹Òͼ

ÒýÓûØÌû:
4Â¥: Originally posted by yanshima at 2012-12-01 08:39:01
Õâ¸öÍùÏÂÔÙÕ¦×öÄØ£¿ÎÒÓÃlsqcurvefit(ydata,p,xdata,y)£¬¿ÉÊÇ˵ÎÒÊÇ´íÎóµÄ¡£ÄÜÂé·³ÄúдÏêϸЩÂлл...

lsqcurvefit(p0,xdata,ydata)

xdata¾ÍÊÇ[x,sf]
ydata¾ÍÊÇÄãµÄy
p0¾ÍÊÇp=[a,b]µÄ³õÖµ
showmethemoney
5Â¥2012-12-03 09:44:35
ÒÑÔÄ   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
Ïà¹Ø°æ¿éÌø×ª ÎÒÒª¶©ÔÄÂ¥Ö÷ yanshima µÄÖ÷Ìâ¸üÐÂ
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