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liu-juan

金虫 (小有名气)

[求助] 用maple, SAS, SPSS, 以及mathmatica拟合,请赐教一下,非常感谢!

x   312.07       318.84      325.11     330.36       335.30        339.88    345.97     349.11
y  0.0001632   0.00024   0.000323  0.0004345   0.0005504  0.0006852  0.0009044  0.00101
拟合函数为y=x^C*exp(A+B/T),其中A,B,C为要拟合的参数,分别用maple, SAS, SPSS, 以及mathmatica拟合,哪位大侠会其中一种或多种,请赐教一下,非常感谢!
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715211229

木虫 (正式写手)

引用回帖:
4楼: Originally posted by dingd at 2012-03-15 16:18:40:
用1stOpt更简单方便:

Function y=x^C*exp(A+B/x);
Data;
x=312.07,318.84,325.11,330.36,335.30,339.88,345.97,349.11;
y=0.0001632,0.00024,0.000323,0.0004345,0.0005504,0.0006852,0.0009044,0.00101;
...

为什么我用1.5提示数据长度不够?
我是蜗牛
8楼2012-03-16 23:53:57
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dingd

铁杆木虫 (职业作家)

【答案】应助回帖

感谢参与,应助指数 +1
T是什么?参数还是变量或常数?
2楼2012-03-15 15:25:06
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liu-juan

金虫 (小有名气)

引用回帖:
2楼: Originally posted by dingd at 2012-03-15 15:25:06:
T是什么?参数还是变量或常数?

晕 T就是x 我写错了 不好意思不好意思
3楼2012-03-15 16:01:03
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dingd

铁杆木虫 (职业作家)

★ ★ ★ ★ ★
cenwanglai: 金币+5, 谢谢提供帮助~~ 2012-03-15 19:11:54
用1stOpt更简单方便:
CODE:
Function y=x^C*exp(A+B/x);
Data;
x=312.07,318.84,325.11,330.36,335.30,339.88,345.97,349.11;
y=0.0001632,0.00024,0.000323,0.0004345,0.0005504,0.0006852,0.0009044,0.00101;

均方差(RMSE): 6.34652525797275E-6
残差平方和(SSE): 3.22227062800689E-10
相关系数(R): 0.99975821041654
相关系数之平方(R^2): 0.999516479295283
决定系数(DC): 0.999515495557389
卡方系数(Chi-Square): 3.29576591156807E-7
F统计(F-Statistic): 5159.91140664503

参数        最佳估算
----------        -------------
c        -23.7275529230449
a        170.112400492991
b        -13290.0030751582


4楼2012-03-15 16:18:40
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