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spaCy/spacy/matcher/phrasematcher.pxd

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Matcher ID fixes (#4179) * allow phrasematcher to link one match to multiple original patterns * small fix for defining ent_id in the matcher (anti-ghost prevention) * cleanup * formatting
2019-08-22 18:17:07 +03:00
from libcpp.vector cimport vector
Replace PhraseMatcher with trie-based search (#4309) * Replace PhraseMatcher with Aho-Corasick Replace PhraseMatcher with the Aho-Corasick algorithm over numpy arrays of the hash values for the relevant attribute. The implementation is based on FlashText. The speed should be similar to the previous PhraseMatcher. It is now possible to easily remove match IDs and matches don't go missing with large keyword lists / vocabularies. Fixes #4308. * Restore support for pickling * Fix internal keyword add/remove for numpy arrays * Add missing loop for match ID set in search loop * Remove cruft in matching loop for partial matches There was a bit of unnecessary code left over from FlashText in the matching loop to handle partial token matches, which we don't have with PhraseMatcher. * Replace dict trie with MapStruct trie * Fix how match ID hash is stored/added * Update fix for match ID vocab * Switch from map_get_unless_missing to map_get * Switch from numpy array to Token.get_struct_attr Access token attributes directly in Doc instead of making a copy of the relevant values in a numpy array. Add unsatisfactory warning for hash collision with reserved terminal hash key. (Ideally it would change the reserved terminal hash and redo the whole trie, but for now, I'm hoping there won't be collisions.) * Restructure imports to export find_matches * Implement full remove() Remove unnecessary trie paths and free unused maps. Parallel to Matcher, raise KeyError when attempting to remove a match ID that has not been added. * Store docs internally only as attr lists * Reduces size for pickle * Remove duplicate keywords store Now that docs are stored as lists of attr hashes, there's no need to have the duplicate _keywords store.
2019-09-27 17:22:34 +03:00
from cymem.cymem cimport Pool
from preshed.maps cimport key_t, MapStruct
Matcher ID fixes (#4179) * allow phrasematcher to link one match to multiple original patterns * small fix for defining ent_id in the matcher (anti-ghost prevention) * cleanup * formatting
2019-08-22 18:17:07 +03:00
Replace PhraseMatcher with trie-based search (#4309) * Replace PhraseMatcher with Aho-Corasick Replace PhraseMatcher with the Aho-Corasick algorithm over numpy arrays of the hash values for the relevant attribute. The implementation is based on FlashText. The speed should be similar to the previous PhraseMatcher. It is now possible to easily remove match IDs and matches don't go missing with large keyword lists / vocabularies. Fixes #4308. * Restore support for pickling * Fix internal keyword add/remove for numpy arrays * Add missing loop for match ID set in search loop * Remove cruft in matching loop for partial matches There was a bit of unnecessary code left over from FlashText in the matching loop to handle partial token matches, which we don't have with PhraseMatcher. * Replace dict trie with MapStruct trie * Fix how match ID hash is stored/added * Update fix for match ID vocab * Switch from map_get_unless_missing to map_get * Switch from numpy array to Token.get_struct_attr Access token attributes directly in Doc instead of making a copy of the relevant values in a numpy array. Add unsatisfactory warning for hash collision with reserved terminal hash key. (Ideally it would change the reserved terminal hash and redo the whole trie, but for now, I'm hoping there won't be collisions.) * Restructure imports to export find_matches * Implement full remove() Remove unnecessary trie paths and free unused maps. Parallel to Matcher, raise KeyError when attempting to remove a match ID that has not been added. * Store docs internally only as attr lists * Reduces size for pickle * Remove duplicate keywords store Now that docs are stored as lists of attr hashes, there's no need to have the duplicate _keywords store.
2019-09-27 17:22:34 +03:00
from ..attrs cimport attr_id_t
from ..tokens.doc cimport Doc
from ..vocab cimport Vocab
cdef class PhraseMatcher:
cdef Vocab vocab
cdef attr_id_t attr
cdef object _callbacks
cdef object _docs
cdef bint _validate
cdef MapStruct* c_map
cdef Pool mem
cdef key_t _terminal_hash
cdef void find_matches(self, Doc doc, vector[MatchStruct] *matches) nogil
cdef struct MatchStruct:
key_t match_id
int start
int end
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