Source code for graphbrain.processors.actors

from collections import Counter

from graphbrain.utils.corefs import main_coref
from graphbrain.processor import Processor
from graphbrain.utils.concepts import has_proper_concept, strip_concept
from graphbrain.utils.lemmas import deep_lemma

[docs]def is_actor(hg, edge): """Checks if the edge is a coreference to an actor.""" if edge.mtype() == 'C': return hg.exists(('actor/P/.', main_coref(hg, edge))) else: return False
[docs]def find_actors(hg, edge): """Returns set of all coreferences to actors found in the edge.""" _actors = set() if is_actor(hg, edge): _actors.add(main_coref(hg, edge)) if edge.not_atom: for item in edge: _actors |= find_actors(hg, item) return _actors
[docs]def actors(hg): """"Returns an iterator over all actors.""" return [edge[1] for edge in'(actor/P/. *)', strict=True)]
ACTOR_PRED_LEMMAS = {'say', 'claim', 'warn', 'kill', 'accuse', 'condemn', 'slam', 'arrest', 'clash', 'blame', 'want', 'call', 'tell'} class Actors(Processor): def __init__(self, hg, sequence=None): super().__init__(hg=hg, sequence=sequence) self.actor_counter = Counter() def process_edge(self, edge): if edge.not_atom: ct = edge.connector_type() if ct[0] == 'P': subjects = edge.edges_with_argrole('s') if len(subjects) == 1: subject = strip_concept(subjects[0]) if subject and has_proper_concept(subject): pred = edge[0] dlemma = deep_lemma(self.hg, pred).root() if dlemma in ACTOR_PRED_LEMMAS: try: actor = main_coref(self.hg, subject) self.actor_counter[actor] += 1 except Exception as e: print(str(e)) def on_end(self): for actor in self.actor_counter: self.hg.add(('actor/P/.', actor)) def report(self): return 'actors found: {}'.format(len(self.actor_counter))