Positional (string-of-words) analysis is performed using textstatcollocations, tokensngrams and tokensselect or fcm with window option; Document-feature matrix (DFM) Represents frequencies of features in documents in a matrix; The most efficient structure, but it does not have information on positions of words. Textstat is an easy to use library to calculate statistics from text. It helps determine readability, complexity, and grade level. Photo by Patrick Tomasso on Unsplash.

Description

Produces counts and document frequencies summaries of the features in adfm, optionally grouped by a docvars variable or other suppliedgrouping variable. Google chrome for mac help.

Usage

Arguments

a dfm object

(optional) integer specifying the top n features to be returned,within group if groups is specified

either: a character vector containing the names of documentvariables to be used for grouping; or a factor or object that can becoerced into a factor equal in length or rows to the number of documents.NA values of the grouping value are dropped.See groups for details.

character string specifying how ties are treated. Seedata.table::frank() for details. Unlike that function,however, the default is 'min', so that frequencies of 10, 10, 11would be ranked 1, 1, 3.

additional arguments passed to dfm_group(). This canbe useful in passing force = TRUE, for instance, if you are grouping adfm that has been weighted.

Value

a data.frame containing the following variables:

feature

(character) the feature

frequency

count of the feature

rank

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Shortcut keyboard keys for mac. rank of the feature, where 1 indicates the greatestfrequency

docfreq

document frequency of the feature, as a count (thenumber of documents in which this feature occurred at least once)

docfreq

document frequency of the feature, as a count Download sql developer for mac.

group

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(only if groups is specified) the label of the group.If the features have been grouped, then all counts, ranks, and documentfrequencies are within group. If groups is not specified, the groupcolumn is omitted from the returned data.frame.