tm (version 0.5-9.1)

VCorpus: Volatile Corpus

Description

Data structures and operators for volatile corpora.

Usage

Corpus(x,
       readerControl = list(reader = x$DefaultReader, language = "en"),
       ...)
VCorpus(x,
        readerControl = list(reader = x$DefaultReader, language = "en"),
        ...)
## S3 method for class 'VCorpus':
DMetaData(x)
## S3 method for class 'Corpus':
CMetaData(x)

Arguments

x

A Source object for Corpus and VCorpus, and a corpus for the other functions.

readerControl

A list with the named components reader representing a reading function capable of handling the file format found in x, and language giving the text's language (preferably as IETF langu

...

Optional arguments for the reader.

Value

• An object of class VCorpus which extends the classes Corpus and list containing a collection of text documents.

Details

Volatile means that the corpus is fully kept in memory and thus all changes only affect the corresponding Robject. In contrast there is also a corpus implementation available providing a permanent semantics (see PCorpus).

The constructed corpus object inherits from a list and has two attributes containing meta information: [object Object],[object Object]

Examples

reut21578 <- system.file("texts", "crude", package = "tm")
(r <- Corpus(DirSource(reut21578),
             readerControl = list(reader = readReut21578XMLasPlain)))