purity {chromswitch} | R Documentation

## purity

### Description

Computes the purity of a partition as defined in https://www.ncbi.nlm.nih.gov/pubmed/17483501

### Usage

    purity(contingency, c, k)

### Arguments

`contingency` | Table, contingency table between clusters and conditions as returned by the `table` function
`c` | Vector of classes
`k` | Vector of clusters

### Value

Numeric

### Examples

    clusters <- c(0, 0, 2, 1, 1, 0, 1)
    classes <- c("A", "A", "A", "B", "B", "A", "B")
    ct <- table(classes, clusters)
    purity(contingency = ct)

[Package chromswitch version 1.2.1 Index]