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yaoyiran

新虫 (小有名气)

[求助] 门外汉请教一句文献翻译的意思。。T 。T

Gene expression profiling provides us with a matrix of n expression values measured for p genes where p is much larger than n, typically somewhere between one and three orders of magnitude.

没有分子生物学的基础,不能明白文献里p,n的含义,希望有大侠简单给我解释一下。顺便问一句,有人用过qp-graph么,能不能告诉我查哪一方面的书能让我理解qp-graph里面的相关算法呢?
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yaoyiran

新虫 (小有名气)

An analogous idea with Gaussian graphical models associated to undirected graphs is to employ limited-
order partial correlations, concretely, q-order partial correlations with q < .n   2/. In this way, we can
carry out a test for the hypothesis of zero q-order partial correlation between two genes with the hope
that if they are not directly associated, their indirect association is mediated by less or equal than q
other genes.
还有这句话是什么意思?q在这里的含义是啥~感激不尽T.T
3楼2015-10-11 11:44:34
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wangxv26

新虫 (小有名气)

得儿~~我也不懂.....
   基因表达的分析提供给我们关于测定P个基因所得的一个n维的矩阵,p值是远大于n的,一般在1-3个数量级

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2楼2015-10-11 11:37:28
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yaoyiran

新虫 (小有名气)

引用回帖:
2楼: Originally posted by wangxv26 at 2015-10-11 11:37:28
得儿~~我也不懂.....
   基因表达的分析提供给我们关于测定P个基因所得的一个n维的矩阵,p值是远大于n的,一般在1-3个数量级

有道翻译的比谷歌是好一点 挺通顺的!
4楼2015-10-11 11:45:11
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晴天jiaq

木虫 (小有名气)

楼上基本正解
qp-graph有专用的R-package供使用,理解算法然并卵

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5楼2015-10-11 11:48:46
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