dissimilarity {tm}R Documentation

Dissimilarity

Description

Compute the dissimilarity between documents in a term-document matrix or between two explicit documents.

Usage

## S3 method for class 'TermDocumentMatrix':
dissimilarity(x, y = NULL, method)
## S3 method for class 'PlainTextDocument':
dissimilarity(x, y = NULL, method)

Arguments

x Either a term-document matrix or a text document.
y A text document. Only used if x is a text document.
method Dissimilarity measure. Any method accepted by dist from package proxy can be passed over.

Value

An object of class dist representing the dissimilarity between participating documents.

Examples

data("crude")
tdm <- TermDocumentMatrix(crude)
dissimilarity(tdm, method = "cosine")
dissimilarity(crude[[1]], crude[[2]], method = "eJaccard")

[Package tm version 0.3-4.1 Index]