如何在model 模块下进行迭代算法

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现在有这公式：d=p**a , a是我所要求的参数, d也是未知的。
我想在sas proc model  模块下完成对a 进行迭代求解，保证每个plot下每个group下的sum(d)=0.067*num, 0<d<1。
数据见附件。请高手帮个忙，着急做出结果毕业，谢谢了！

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关键词：model 迭代算法 mode Mod del 模块 算法 model

bridog 发表于 2010-7-3 11:44
现在有这公式：d=p**a , a是我所要求的参数, d也是未知的。
我想在sas proc model  模块下完成对a 进行迭代求解，保证每个plot下每个group下的sum(d)=0.067*num, 0

The proc model does use 迭代求解. So what is your problem?

I want to get the estimator of parameter a.
Thank you.

bridog 发表于 2010-7-4 09:50
I want to get the estimator of parameter a.
Thank you.

if the model is                    d=p**a  + error     , a是我所要求的参数,

Then it is a non-linear regression model. Upon observing d and p we can estimate a. But you said that  "d 也是未知的", then there is no way to estimate a.

But there is another function: sum(d)=0.067*num.

bridog 发表于 2010-7-5 08:01
But there is another function: sum(d)=0.067*num.

If you can write down your problem a little bit more detail or even better write model down in term of a math equation. It will be much helpful.

d=p**a.
where a is parameter I need to estimate.
And SAS procedure model was used to iteratively solve for the value of a for each group such that
sum(d)=0.067*num.

Clear now? Many thanks for you.

6# bobguy

Pleas help me.
Thank you.

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