RcmdrPlugin.temis (version 0.6.1)

subsetCorpusByTermsDlg: Subset Corpus by Terms

Description

Create a subset of the corpus by retaining only the documents which contain (or not) specified terms.

Details

This operation will restrict the corpus, document-term matrix and the corpusVars data set so that they only contain documents with occurrences of terms from the first list, and without terms from the same list (both conditions must be filled). Previously run analyses like correspondence analysis or hierarchical clustering are removed to prevent confusion.

If you choose to save the original corpus, you will be able to restore it later from the Text mining -> Subset corpus -> Restore original corpus menu. Warning: checking this option will erase an existing backup if present. Like subsetting, restoring the original corpus removes existing correspondence analysis and hierarchical clustering objects.

If you specify both terms that should and terms that should not be present, it is possible that no document matches this condition, in which case an error is produced before subsetting the corpus.

See Also

setCorpusVariables, meta, DocumentTermMatrix