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多元非线性回归分析

2013-4-14 编辑:admin 阅读次数:
  导读:变量有x1,x2,x3,y,暂时不知道y=f(x1,x2,x3 )的具体函数形式,如何找到其具体函数?具体数据如下: 前期在小木虫上找到一个模型,y=b0*(x1^b1)*(x2^b2)*(x3^b3),对另外一组数据拟合效果较好,但对下面的数据拟合效果比较差~~ y???? ? ? ?x1???? ?2??????x3 85???? ? ? ...
变量有x1,x2,x3,y,暂时不知道y=f(x1,x2,x3 )的具体函数形式,如何找到其具体函数?具体数据如下:
前期在小木虫上找到一个模型,y=b0*(x1^b1)*(x2^b2)*(x3^b3),对另外一组数据拟合效果较好,但对下面的数据拟合效果比较差~~
y???? ? ? ?x1???? ?2??????x3
85???? ? ? ?.3????500.2????118.1
84.6???? ? ? ?.3????500.1????110
83.5???? ? ? ?.3????500.3????100.2
84.4???? ? ? ?.3????499.1????89.6
91.4?? ???1.3????499.5????79.7
85.6???? ? ? ?.3????500.7????70.9
93.1??? ???1.3????499.9????59.8
97.1???? ? ? ?.3????499.9????49.8
91.3???? ? ? ?.3????500.5????41.1
106.1????1.3????500.1????30.4
131.9????1.3????500???? ? ? ?9.9
194.6????1.3????500.4????10.1
334.6????1.3????500.1????5.1
60.4???? ? ? ?.3????448.5????109.3
58.4???? ? ? ?.3????450.6????100.7
62.5???? ? ? ?.3????449.5????89.5
67.4???? ? ? ?1.3????450.1????80.1
69.8???? ? ? ?1.3????449.8????69.8
73.3???? ? ? ?1.3????449.9????59.9
74.7???? ? ? ?1.3????450.1????49.9
83.1???? ? ? ?1.3????450???? ? ? ?0.1
93.8???? ? ? ?1.3????449.9????29.8
102?? ? ??????.3????450.7????20.7
142.5?????.3??49.7????9.7
281.4????1.3????449.8????4.7
60???? ? ? ?1.3????419.9????99.8
61.9???? ? ? ?1.3????419.9????89.8
58.6???? ? ? ?1.3????420.1????80.1
58.6???? ? ? ?1.3????420.9????70.8
63.5???? ? ? ?1.3????420.2????60.5
65.1???? ? ? ?1.3????420????50
77.3???? ? ? ?.3????419.5????39.6
85.1???? ? ? ?.3????419.9????30
85.9???? ? ? ?.3????420????20
136.5????1.3????419.7????9.8
166.9????1.3????420.9????6.2
58.1???? ? ? ?.3????400.4????95.3
57.2???? ? ? ?.3????400.3????90.3
52.7???? ? ? ?.3????400.5????80.4
57.3???? ? ? ?.3????400.2????70
58.9???? ? ? ?.3????400????60.1
59.6???? ? ? ?.3????400.2????50.2
64.8??????1.3????400???? ? ? ?9.9
68.8???? ? ? ?.3????400.5????30.5
90.1???? ? ? ?.3????399.9????19.6
113.3????1.3????400.2????10.4
183.4????1.3????399.8????5
396.7????0.2????401.7????20.3
366.3????0.2????399.9????14.7
257.4????0.2????400.6????10.1
213.9????0.2????400.6????7.6
144.5????0.2????400???? ? ? ?.9
504.4????0.2????420.2????20.4
450.5????0.2????419???? ? ? ?15
432.2????0.2????420.7????10.6
255.5????0.2????420.3????6.8
160.4????0.2????420.3????5.5
534.3????0.2????450.3????22
451.2????0.2????450.2????15.5
410.1????0.2????450.3????10.6
232.5????0.2????450.3????7.5
127.8????0.2????450.1????5.1
603.4????0.2????500.3????22.4
590.4????0.2????501.2????20.5
574.5????0.2????500.2????15.8
551.1????0.2????500.1????9.4
542.3????0.2????500.5????7.1
235.2????0.2????500.4????5.6
155.6????0.7????500.6????40.2
160.4????0.7????499.3????29.5
182.2????0.7????501.7????18.8
200.4????0.7????500.6????11.5
272.7????0.7????500.2????5
132.7????0.7????449.7????40.2
140.2????0.7????450.4????30.1
146.5????0.7????450.9????19.6
170.7????0.7????452.4????9.1
230.3????0.7????448.6????5.8
100.4????0.7????400???? ? ? ?8.3
110.5????0.7????400.2????20.7
124.1????0.7????401.8????16.1
130.3????0.7????399.4????10.3
170.6????0.7????400.2????4.7

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