detect noise — noise • polmineR

detect noise

noise(.Object, ...)

# S4 method for DocumentTermMatrix
noise(
  .Object,
  minTotal = 2,
  minTfIdfMean = 0.005,
  sparse = 0.995,
  stopwordsLanguage = "german",
  minNchar = 2,
  specialChars = getOption("polmineR.specialChars"),
  numbers = "^[0-9\\.,]+$",
  verbose = TRUE
)

# S4 method for TermDocumentMatrix
noise(.Object, ...)

# S4 method for character
noise(
  .Object,
  stopwordsLanguage = "german",
  minNchar = 2,
  specialChars = getOption("polmineR.specialChars"),
  numbers = "^[0-9\\.,]+$",
  verbose = TRUE
)

# S4 method for textstat
noise(.Object, p_attribute, ...)

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
p_attribute	relevant if applied to a textstat object

Value

a list