81 lines
2.7 KiB
Python
81 lines
2.7 KiB
Python
from conllu import parse_incr
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from tabulate import tabulate
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from flair.data import Corpus, Sentence, Token
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from flair.datasets import SentenceDataset
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from flair.embeddings import StackedEmbeddings
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from flair.embeddings import WordEmbeddings
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from flair.embeddings import CharacterEmbeddings
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from flair.embeddings import FlairEmbeddings
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from flair.models import SequenceTagger
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from flair.trainers import ModelTrainer
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def nolabel2o(line, i):
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return 'O' if line[i] == 'NoLabel' else line[i]
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def conllu2flair(sentences, label=None):
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fsentences = []
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for sentence in sentences:
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fsentence = Sentence()
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for token in sentence:
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ftoken = Token(token['form'])
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if label:
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ftoken.add_tag(label, token[label])
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fsentence.add_token(ftoken)
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fsentences.append(fsentence)
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return SentenceDataset(fsentences)
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fields = ['id', 'form', 'frame', 'slot']
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with open('Janet.conllu', encoding='utf-8') as trainfile:
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slot_trainset = list(parse_incr(trainfile, fields=fields, field_parsers={'slot': nolabel2o}))
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with open('Janet.conllu', encoding='utf-8') as trainfile:
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frame_trainset = list(parse_incr(trainfile, fields=fields, field_parsers={'frame': nolabel2o}))
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tabulate(slot_trainset[0], tablefmt='html')
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slot_corpus = Corpus(train=conllu2flair(slot_trainset, 'slot'), test=conllu2flair(slot_trainset, 'slot'))
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frame_corpus = Corpus(train=conllu2flair(frame_trainset, 'frame'), test=conllu2flair(frame_trainset, 'frame'))
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slot_tag_dictionary = slot_corpus.make_tag_dictionary(tag_type='slot')
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frame_tag_dictionary = frame_corpus.make_tag_dictionary(tag_type='frame')
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print(slot_tag_dictionary)
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print(frame_tag_dictionary)
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embedding_types = [
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WordEmbeddings('pl'),
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FlairEmbeddings('pl-forward'),
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FlairEmbeddings('pl-backward'),
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CharacterEmbeddings(),
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]
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embeddings = StackedEmbeddings(embeddings=embedding_types)
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slot_tagger = SequenceTagger(hidden_size=256, embeddings=embeddings,
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tag_dictionary=slot_tag_dictionary,
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tag_type='slot', use_crf=True)
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frame_tagger = SequenceTagger(hidden_size=256, embeddings=embeddings,
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tag_dictionary=frame_tag_dictionary,
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tag_type='frame', use_crf=True)
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slot_trainer = ModelTrainer(slot_tagger, slot_corpus)
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slot_trainer.train('slot-model',
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learning_rate=0.1,
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mini_batch_size=32,
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max_epochs=30,
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train_with_dev=False)
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frame_trainer = ModelTrainer(frame_tagger, frame_corpus)
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frame_trainer.train('frame-model',
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learning_rate=0.1,
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mini_batch_size=32,
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max_epochs=30,
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train_with_dev=False) |