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wangyx0411702

铁杆木虫 (正式写手)


[交流] 求助--培养基优化方面审稿意见回复

我用One-variable-at-a-time approach,Plackett-Burman design (PB design),Steepest ascent method,Response surface methodology (RSM)进行培养基优化,得出一个二次多项式,根据模型得出的最佳培养配比进行产量验证后,结果与模型预测相差不大。审稿人提出如下问题:Was forward and/or backward linear regression performed to evaluate the model?请问高手这是什么意思呀,我该怎么回答呢?急切盼望您的解答,谢谢!!!
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RedGene

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引用回帖:
Originally posted by wangyx0411702 at 2011-02-26 19:44:41:
我用One-variable-at-a-time approach,Plackett-Burman design (PB design),Steepest ascent method,Response surface methodology (RSM)进行培养基优化,得出一个二次多项式,根据模型得出的最佳培养配比进行产量 ...

给你个PPT学习一下吧,你的问题主要是Stepwise regression的问题,你看看是否有帮助,你怎么做的过程只有自己是最了解的,你描述就可以了啊,怎么还会不理解呢?
5楼2011-02-27 11:49:53
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RedGene

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wangyx0411702(金币+20): 非常感谢您的回复,我是根据软件一步步做出来的,不太明白您说的意思?我把数据贴上,可以进一步请教吗?我的QQ是:316853374 2011-02-27 11:21:46
Forward - add predictors one-at-a-time until no improvement in fit (Adj. R2, AIC, etc.)
Backward - start with all predictors and remove one-at-a-time until fit is hurt.
根据你的模型实际参数来回复以上两点!
2楼2011-02-26 21:47:29
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RedGene

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wangyx0411702(金币+20): 非常感谢您的回复,我是根据软件一步步做出来的,不知道怎么回答好了,着急死了。我的QQ是:316853374,我把数据贴上,可以进一步请教吗? 2011-02-27 11:24:12
这是Reviewer询问你:Can you  perform stepwise selection? (forward, backward, both) ,你是怎么做的,就怎么回答,能理解吗?
3楼2011-02-26 21:51:52
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RedGene

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这样回复(参考):During the entire process (OR From the initial 37 to the last 6), the quantities of factors decreased was accompanied by β-glucosidase production gradually reached a maximum. Thus, the results validated that the models were well fitted to the experimental data by backward linear regression.
6楼2011-02-28 00:02:34
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