qpImportNrr {qpgraph} | R Documentation

## Import non-rejection rates

### Description

Imports non-rejection rates from an external flat file.

### Usage

    qpImportNrr(filename, nTests)

### Arguments

`filename` | name of the flat file with the data on the non-rejection rates.
`nTests` | number of tests performed in the estimation of these non-rejection rates.

### Details

This function expects a flat file with three tab-separated columns corresponding to, respectively, 0-based index of one of the variables, 0-based index of the other variable, number of non-rejected tests for the pair of variables of that row in the text file. An example of a few lines of that file would be:

    6       3       95
    6       4       98
    6       5       23
    7       0       94
    7       1       94

After reading the file the function builds a matrix of non-rejection rates by dividing the number of non-rejected tests by `nTests`. Note that if the flat file to be imported would eventually have directly the rates instead of the number of tests, these can be also imported by setting `nTests=1`.

This function is thought to be used to read files obtained from the standalone parallel version of `qpNrr` which can be downloaded from http://functionalgenomics.upf.edu/qp.

### Value

A symmetric matrix of non-rejection rates with the diagonal set to the `NA` value.

### Author(s)

R. Castelo and A. Roverato

### References

Castelo, R. and Roverato, A. A robust procedure for Gaussian graphical model search from microarray data with p larger than n, J. Mach. Learn. Res., 7:2621-2650, 2006.

### See Also

`qpNrr`

[Package qpgraph version 1.0.0 Index]