IsoGene-package {IsoGene}R Documentation

IsoGene

Description

Library IsoGene aims to identify for genes with a monotonic trend in the expression levels with respect to the increasing doses using several test statistics. They include the global likelihood ratio test (E^2, Bartholomew 1961, Barlow et al. 1972 and Robertson et al. 1988), Williams (1971, 1972), Marcus (1976), the M (Hu et al. 2005) and the modified M (Lin et al. 2007). The p-values of the five test statistics are obtained using permutation and they are adjusted using BH (Benjamini and Hochberg 1995) and BY (Benjamini and Yekutilie 2004) procedures are used for controlling the FDR.

Details

Package: IsoGene
Type: Package
Version: 1.0
Date: 2007-05-02
License: Free

Value

The package includes the following functions:

IsoGene1 calculates the five test statistics in testing both increasing and decreasing alternatives for a single gene
IsoGenem calculates the five test statistics in testing both increasing and decreasing alternatives for all the genes in the data set
IsoRawp obtains the raw (one-sided and two-sided) p-values using permuations
IsoTestBH BH or BY procedure to adjust p-values while controlling FDR
IsoGenemSAM calculates the SAM test statistic
Isofudge calculates the fudge factor in the SAM test statistic
Isoqqstat calculates the SAM test statistic using permutations
Isoallfdr obtains the delta table in the SAM procedure
Isoqval the SAM procedure to obtain q-values
IsoTestSAM the SAM procedure to obtain a list of significant genes
IsoSAMPlot SAM plot
IsoBHPlot plot of adjusted BH and BY p-values
IsoPlot plot of data, sample means, and a fitted isotonic regression curve with a likely direction
IsopvaluePlot plot of p-values obtained using permutation under increasing or decreasing alternatives

Author(s)

Lin et al.

Maintainer: Dan Lin <dan.lin@uhasselt.be>

References

Testing for Trend in Dose-Response Microarray Experiments: a Comparison of Testing Procedures, Multiplicity, and Resampling-Based Inference, Lin et al. 2007, Stat. App. in Gen. & Mol. Bio., 6(1), article 26.

See Also

mt.rawp2adjp, IsoGene1, IsoGenem,IsoRawp, IsoTestBH, IsoGenemSAM, Isofudge, Isoqqstat,Isoallfdr,Isoqval,IsoTestSAM, IsoSAMPlot, IsoBHPlot, IsoPlot.


[Package IsoGene version 1.0-15 Index]