tm (version 0.1-1)

TermDocMatrix: Term-document matrix

Description

Constructs a term-document matrix.

Usage

## S3 method for class 'TextDocCol':
TermDocMatrix(object, weighting = "tf", stemming
= FALSE, language = "english", minWordLength = 3, minDocFreq = 1,
stopwords = NULL)

Arguments

object

a text document collection

weighting

the weighting mode for the term-document matrix. Possible settings are

• tfTerm frequency
• tf-idfTerm frequency inverse document frequency
• binBinary frequency
• logical

stemming

if set, stems words before making the term-document matrix.

language

the language determines the stemming rules

minWordLength

words smaller than this number are discarded for the term-document matrix.

minDocFreq

words that appear less often in documents than this number are discarded for the term-document matrix.

stopwords

a plain text file with all stopwords

Value

• An S4 object of class TermDocMatrix which extends the class matrix containing a term-document matrix. The following slots contain useful information:
• Weighting
  The weighting mode applied to the term-document matrix