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puxinyue新虫 (著名写手)
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[求助]
关于四参数Logistic方程 已有1人参与
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哪位大神帮忙求解 方程y=a+{(b-a)/(1+10^[(m-x)*c)]},已知x，y值，求解（1）a，b，c，m值（2）m值的95%置信区间.用SPSS如何操作？ x y -30.0 1.0 -0.698970004 0.908018198 -0.397940009 0.759213831 -0.22184875 0.552014559 -0.096910013 0.306860783 0.0 0.253619654 0.301029996 0.0 |
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【答案】应助回帖
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感谢参与，应助指数 +1
puxinyue: 金币+2, ★★★很有帮助 2014-10-10 18:48:12
puxinyue: 金币+3, ★★★很有帮助 2014-10-10 21:50:11
puxinyue: 金币+5, ★★★★★最佳答案 2014-10-10 23:52:33
感谢参与，应助指数 +1
puxinyue: 金币+2, ★★★很有帮助 2014-10-10 18:48:12
puxinyue: 金币+3, ★★★很有帮助 2014-10-10 21:50:11
puxinyue: 金币+5, ★★★★★最佳答案 2014-10-10 23:52:33
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Function y=a+((b-a)/(1+10^((m-x)*c))); Data; -30.0 1.0 -0.698970004 0.908018198 -0.397940009 0.759213831 -0.22184875 0.552014559 -0.096910013 0.306860783 0.0 0.253619654 0.301029996 0.0 均方差(RMSE): 0.0279229840234457 残差平方和(SSE): 0.00545785125741521 相关系数(R): 0.996922065945113 相关系数之平方(R^2): 0.993853605568273 决定系数(DC): 0.993369989658489 卡方系数(Chi-Square): 0.0333656730760132 F统计(F-Statistic): 808.485052991503 参数 最佳估算 ---------- ------------- a 0.987155395921295 b -0.0741458477381193 m -0.169875951845711 c 2.36430519462335 SPSS参见：http://muchong.com/bbs/viewthread.php?tid=6166592&authorid=1122189 |
2楼2014-10-10 18:27:37
puxinyue
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非常感谢，我用1stopt算出来的结果和你的一致，但是spss置信区间求不出来。后面显示： * NonLinear Regression. MODEL PROGRAM a=0.74 b=0.99 c=-1.07 m=2.36. COMPUTE PRED_=b+(a-b)/(1+10**((m-x)*c)). NLR y /OUTFILE='C:\DOCUME~1\ADMINI~1\LOCALS~1\Temp\spss7720\SPSSFNLR.TMP' /PRED PRED_ /CRITERIA SSCONVERGENCE 0 PCON 0. Warnings During the execution of the indicated command, an attempt was made to perform exponentiation for which the result would have been outside the range of the computer, i.e. a magnitude smaller than 10**(-309) or greater than 10**308. The result has been set to the system-missing value. >Command line: 160 Current case: 1 Current splitfile group: 1 During the execution of the indicated command, an attempt was made to perform exponentiation for which the result would have been outside the range of the computer, i.e. a magnitude smaller than 10**(-309) or greater than 10**308. The result has been set to the system-missing value. >Command line: 160 Current case: 2 Current splitfile group: 1 During the execution of the indicated command, an attempt was made to perform exponentiation for which the result would have been outside the range of the computer, i.e. a magnitude smaller than 10**(-309) or greater than 10**308. The result has been set to the system-missing value. >Command line: 160 Current case: 3 Current splitfile group: 1 During the execution of the indicated command, an attempt was made to perform exponentiation for which the result would have been outside the range of the computer, i.e. a magnitude smaller than 10**(-309) or greater than 10**308. The result has been set to the system-missing value. >Command line: 160 Current case: 4 Current splitfile group: 1 During the execution of the indicated command, an attempt was made to perform exponentiation for which the result would have been outside the range of the computer, i.e. a magnitude smaller than 10**(-309) or greater than 10**308. The result has been set to the system-missing value. >Command line: 160 Current case: 5 Current splitfile group: 1 During the execution of the indicated command, an attempt was made to perform exponentiation for which the result would have been outside the range of the computer, i.e. a magnitude smaller than 10**(-309) or greater than 10**308. The result has been set to the system-missing value. >Command line: 160 Current case: 6 Current splitfile group: 1 During the execution of the indicated command, an attempt was made to perform exponentiation for which the result would have been outside the range of the computer, i.e. a magnitude smaller than 10**(-309) or greater than 10**308. The result has been set to the system-missing value. >Command line: 160 Current case: 7 Current splitfile group: 1 Predicted values are missing, or case weights are missing or not positive for all cases. This command is not executed.  QQ截图20141010185252.png |
3楼2014-10-10 18:54:54
puxinyue
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4楼2014-10-10 21:22:28
puxinyue
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5楼2014-10-10 21:49:39
