B >?ð[Èã@s,ddlmZddlmZGdd„deƒZdS)é)ÚParserI)Ú ChunkScorec@s eZdZdZdd„Zdd„ZdS)Ú ChunkParserIa; A processing interface for identifying non-overlapping groups in unrestricted text. Typically, chunk parsers are used to find base syntactic constituents, such as base noun phrases. Unlike ``ParserI``, ``ChunkParserI`` guarantees that the ``parse()`` method will always generate a parse. cCs tƒ‚dS)zÞ Return the best chunk structure for the given tokens and return a tree. :param tokens: The list of (word, tag) tokens to be chunked. :type tokens: list(tuple) :rtype: Tree N)ÚNotImplementedError)ÚselfÚtokens©rú-lib/python3.7/site-packages/nltk/chunk/api.pyÚparses zChunkParserI.parsecCs.tƒ}x"|D]}| || | ¡¡¡q W|S)aŒ Score the accuracy of the chunker against the gold standard. Remove the chunking the gold standard text, rechunk it using the chunker, and return a ``ChunkScore`` object reflecting the performance of this chunk peraser. :type gold: list(Tree) :param gold: The list of chunked sentences to score the chunker on. :rtype: ChunkScore )rZscorer Zleaves)rZgoldZ chunkscoreZcorrectrrr Úevaluate&s  zChunkParserI.evaluateN)Ú__name__Ú __module__Ú __qualname__Ú__doc__r r rrrr rs rN)Z nltk.parserZnltk.chunk.utilrrrrrr Ú s