3 ­dšã@s8ddlmZddlmZddlmZGdd„deƒZdS)é)Ú ChunkScore)Ú deprecated)ÚParserIc@s0eZdZdZdd„Zedƒdd„ƒZdd„Zd S) 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©r ú./tmp/pip-build-v9q4h5k9/nltk/nltk/chunk/api.pyÚparses zChunkParserI.parsezUse accuracy(gold) instead.cCs |j|ƒS)N)Úaccuracy)rÚgoldr r r Úevaluate&szChunkParserI.evaluatecCs.tƒ}x"|D]}|j||j|jƒƒƒq W|S)a‹ 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 parser. :type gold: list(Tree) :param gold: The list of chunked sentences to score the chunker on. :rtype: ChunkScore )rZscorer Zleaves)rr Z chunkscoreÚcorrectr r r r *s  zChunkParserI.accuracyN)Ú__name__Ú __module__Ú __qualname__Ú__doc__r rrr r r r r rs rN)Znltk.chunk.utilrZnltk.internalsrZ nltk.parserrr r r r Ú s