polmineR (version 0.7.0)

noise: detect noise

Description

detect noise

Usage

noise(.Object, ...)
"noise"(.Object, minTotal = 2, minTfIdfMean = 0.005, sparse = 0.995, stopwordsLanguage = "german", minNchar = 2, specialChars = getOption("polmineR.specialChars"), numbers = "^[0-9\\.,]+$", verbose = TRUE)
"noise"(.Object, ...)
"noise"(.Object, stopwordsLanguage = "german", minNchar = 2, specialChars = getOption("polmineR.specialChars"), numbers = "^[0-9\\.,]+$", verbose = TRUE)
"noise"(.Object, pAttribute, ...)

Arguments

.Object

an .Object of class "DocumentTermMatrix"

...

further parameters

minTotal

minimum colsum (for DocumentTermMatrix) to qualify a term as non-noise

minTfIdfMean

minimum mean value for tf-idf to qualify a term as non-noise

sparse

will be passed into "removeSparseTerms" from "tm"-package

stopwordsLanguage

e.g. "german", to get stopwords defined in the tm package

minNchar

min char length ti qualify a term as non-noise

specialChars

special characters to drop

numbers

regex, to drop numbers

verbose

logical

pAttribute

relevant if applied to a textstat object

Value

a list