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bbslover

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[交流] 【讨论】QSAR计算,如何确定outlier?

QSAR的paper中常常提到一些点是outlier,那么如何才能确定哪些点是outlier呢?就凭那条回归线,偏离线的可以作为outlier? 还是有什么标准中,希望各位讨论一下,给一点提示。

一篇文献曾这样写的:In general, residual values greater than 2
times  the  standard  error  of  the  residuals  generated  in  the
validation  procedure  are  considered  outliers.

那么这里的 standard  error  of  the  residuals  generated  in  the
validation  procedure  指的是哪个值呢? SEE? 有些糊涂,希望帮忙解惑。

[ Last edited by lei0736 on 2009-11-24 at 21:02 ]
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yalefield

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老汉一枚

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小木虫(金币+0.5):给个红包,谢谢回帖交流
mingdong(金币+1,VIP+0):感谢交流! 9-25 16:38
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名人综述
An approach toward the problem of outliers in QSAR
Rajeshwar P. Verma,  and Corwin Hansch
Bioorganic & Medicinal Chemistry
2005. 13(15):4597-4621

On Outliers and Activity CliffsWhy QSAR Often Disappoints
Gerald M. Maggiora
J. Chem. Inf. Model., 2006, 46 (4):1535

Pitfalls in QSAR
Mark T. D. Cronin and T. Wayne Schultz
Journal of Molecular Structure: THEOCHEM
2003 622(1-2):39-51

The importance of outlier detection and training set selection for reliable environmental QSAR predictions
Erik Furusjö,  Anders Svensona, Magnus Rahmberga and Magnus Andersson
Chemosphere 2006 63(1):99-108
2楼2009-09-25 11:15:10
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bbslover

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呵呵,yalefield的帮助真及时。赶快下载看看。
3楼2009-09-25 11:26:55
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