R: compute the precision at given sizes of retrieved genes
FindPrec
R Documentation
compute the precision at given sizes of retrieved genes
Description
Given a vector of sizes of retrieved genes, for each size k, select
the top k genes with smallest p values and compute the precision from
the retrieved genes and the true positive genes.
Usage
FindPrec(pvalue, ind,topk)
Arguments
pvalue
A vector of p values, one for each gene, with length m
ind
A vector of indices that the corresponding gene are true positive
topk
A vector of integers ranging from 1 to m , length of retrieved
gene list
Value
prec
A vector of precisions at given sizes of retrieval.