nltk.corpus.reader.LinThesaurusCorpusReader

class nltk.corpus.reader.LinThesaurusCorpusReader[source]

Bases: CorpusReader

Wrapper for the LISP-formatted thesauruses distributed by Dekang Lin.

__init__(root, badscore=0.0)[source]

Initialize the thesaurus.

Parameters

  • root (C{string}) – root directory containing thesaurus LISP files

  • badscore (C{float}) – the score to give to words which do not appear in each other’s sets of synonyms

similarity(ngram1, ngram2, fileid=None)[source]

Returns the similarity score for two ngrams.

Parameters

  • ngram1 (C{string}) – first ngram to compare

  • ngram2 (C{string}) – second ngram to compare

  • fileid (C{string}) – thesaurus fileid to search in. If None, search all fileids.

Returns

If fileid is specified, just the score for the two ngrams; otherwise, list of tuples of fileids and scores.

scored_synonyms(ngram, fileid=None)[source]

Returns a list of scored synonyms (tuples of synonyms and scores) for the current ngram

Parameters

  • ngram (C{string}) – ngram to lookup

  • fileid (C{string}) – thesaurus fileid to search in. If None, search all fileids.

Returns

If fileid is specified, list of tuples of scores and synonyms; otherwise, list of tuples of fileids and lists, where inner lists consist of tuples of scores and synonyms.

synonyms(ngram, fileid=None)[source]

Returns a list of synonyms for the current ngram.

Parameters

  • ngram (C{string}) – ngram to lookup

  • fileid (C{string}) – thesaurus fileid to search in. If None, search all fileids.

Returns

If fileid is specified, list of synonyms; otherwise, list of tuples of fileids and lists, where inner lists contain synonyms.

abspath(fileid)[source]

Return the absolute path for the given file.

Parameters

fileid (str) – The file identifier for the file whose path should be returned.

Return type

PathPointer

abspaths(fileids=None, include_encoding=False, include_fileid=False)[source]

Return a list of the absolute paths for all fileids in this corpus; or for the given list of fileids, if specified.

Parameters

  • fileids (None or str or list) – Specifies the set of fileids for which paths should be returned. Can be None, for all fileids; a list of file identifiers, for a specified set of fileids; or a single file identifier, for a single file. Note that the return value is always a list of paths, even if fileids is a single file identifier.

  • include_encoding – If true, then return a list of (path_pointer, encoding) tuples.

Return type

list(PathPointer)

citation()[source]

Return the contents of the corpus citation.bib file, if it exists.

encoding(file)[source]

Return the unicode encoding for the given corpus file, if known. If the encoding is unknown, or if the given file should be processed using byte strings (str), then return None.

ensure_loaded()[source]

Load this corpus (if it has not already been loaded). This is used by LazyCorpusLoader as a simple method that can be used to make sure a corpus is loaded – e.g., in case a user wants to do help(some_corpus).

fileids()[source]

Return a list of file identifiers for the fileids that make up this corpus.

license()[source]

Return the contents of the corpus LICENSE file, if it exists.

open(file)[source]

Return an open stream that can be used to read the given file. If the file’s encoding is not None, then the stream will automatically decode the file’s contents into unicode.

Parameters

file – The file identifier of the file to read.

raw(fileids=None)[source]
Parameters

fileids – A list specifying the fileids that should be used.

Returns

the given file(s) as a single string.

Return type

str

readme()[source]

Return the contents of the corpus README file, if it exists.

property root

The directory where this corpus is stored.

Type

PathPointer