mirror of https://github.com/explosion/spaCy.git
276 lines
8.7 KiB
Python
Executable File
276 lines
8.7 KiB
Python
Executable File
#!/usr/bin/env python
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from __future__ import division
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from __future__ import unicode_literals
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import os
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from os import path
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import shutil
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import codecs
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import random
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import time
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import gzip
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import plac
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import cProfile
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import pstats
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import spacy.util
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from spacy.en import English
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from spacy.en.pos import POS_TEMPLATES, POS_TAGS, setup_model_dir
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from spacy.syntax.parser import GreedyParser
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from spacy.syntax.parser import OracleError
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from spacy.syntax.util import Config
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def is_punct_label(label):
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return label == 'P' or label.lower() == 'punct'
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def read_tokenized_gold(file_):
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"""Read a standard CoNLL/MALT-style format"""
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sents = []
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for sent_str in file_.read().strip().split('\n\n'):
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ids = []
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words = []
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heads = []
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labels = []
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tags = []
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for i, line in enumerate(sent_str.split('\n')):
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id_, word, pos_string, head_idx, label = _parse_line(line)
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words.append(word)
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if head_idx == -1:
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head_idx = i
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ids.append(id_)
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heads.append(head_idx)
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labels.append(label)
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tags.append(pos_string)
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text = ' '.join(words)
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sents.append((text, [words], ids, words, tags, heads, labels))
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return sents
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def read_docparse_gold(file_):
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paragraphs = []
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for sent_str in file_.read().strip().split('\n\n'):
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if not sent_str.strip():
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continue
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words = []
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heads = []
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labels = []
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tags = []
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ids = []
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lines = sent_str.strip().split('\n')
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<<<<<<< HEAD
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raw_text = lines.pop(0).strip()
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tok_text = lines.pop(0).strip()
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=======
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raw_text = lines.pop(0)
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tok_text = lines.pop(0)
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>>>>>>> master
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for i, line in enumerate(lines):
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id_, word, pos_string, head_idx, label = _parse_line(line)
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if label == 'root':
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label = 'ROOT'
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words.append(word)
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if head_idx < 0:
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head_idx = id_
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ids.append(id_)
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heads.append(head_idx)
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labels.append(label)
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tags.append(pos_string)
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tokenized = [sent_str.replace('<SEP>', ' ').split(' ')
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for sent_str in tok_text.split('<SENT>')]
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paragraphs.append((raw_text, tokenized, ids, words, tags, heads, labels))
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return paragraphs
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def _map_indices_to_tokens(ids, heads):
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mapped = []
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for head in heads:
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if head not in ids:
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mapped.append(None)
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else:
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mapped.append(ids.index(head))
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return mapped
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def _parse_line(line):
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pieces = line.split()
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if len(pieces) == 4:
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return 0, pieces[0], pieces[1], int(pieces[2]) - 1, pieces[3]
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else:
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id_ = int(pieces[0])
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word = pieces[1]
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pos = pieces[3]
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head_idx = int(pieces[6])
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label = pieces[7]
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return id_, word, pos, head_idx, label
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loss = 0
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def _align_annotations_to_non_gold_tokens(tokens, words, annot):
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global loss
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tags = []
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heads = []
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labels = []
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orig_words = list(words)
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missed = []
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for token in tokens:
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while annot and token.idx > annot[0][0]:
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miss_id, miss_tag, miss_head, miss_label = annot.pop(0)
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miss_w = words.pop(0)
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if not is_punct_label(miss_label):
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missed.append(miss_w)
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loss += 1
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if not annot:
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tags.append(None)
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heads.append(None)
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labels.append(None)
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continue
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id_, tag, head, label = annot[0]
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if token.idx == id_:
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tags.append(tag)
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heads.append(head)
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labels.append(label)
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annot.pop(0)
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words.pop(0)
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elif token.idx < id_:
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tags.append(None)
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heads.append(None)
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labels.append(None)
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else:
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raise StandardError
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#if missed:
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# print orig_words
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# print missed
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# for t in tokens:
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# print t.idx, t.orth_
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return loss, tags, heads, labels
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def iter_data(paragraphs, tokenizer, gold_preproc=False):
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for raw, tokenized, ids, words, tags, heads, labels in paragraphs:
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if not gold_preproc:
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tokens = tokenizer(raw)
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loss, tags, heads, labels = _align_annotations_to_non_gold_tokens(
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tokens, list(words),
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zip(ids, tags, heads, labels))
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ids = [t.idx for t in tokens]
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heads = _map_indices_to_tokens(ids, heads)
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yield tokens, tags, heads, labels
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else:
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assert len(words) == len(heads)
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for words in tokenized:
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sent_ids = ids[:len(words)]
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sent_tags = tags[:len(words)]
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sent_heads = heads[:len(words)]
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sent_labels = labels[:len(words)]
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sent_heads = _map_indices_to_tokens(sent_ids, sent_heads)
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tokens = tokenizer.tokens_from_list(words)
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yield tokens, sent_tags, sent_heads, sent_labels
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ids = ids[len(words):]
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tags = tags[len(words):]
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heads = heads[len(words):]
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labels = labels[len(words):]
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def get_labels(sents):
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left_labels = set()
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right_labels = set()
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for raw, tokenized, ids, words, tags, heads, labels in sents:
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for child, (head, label) in enumerate(zip(heads, labels)):
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if head > child:
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left_labels.add(label)
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elif head < child:
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right_labels.add(label)
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return list(sorted(left_labels)), list(sorted(right_labels))
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def train(Language, paragraphs, model_dir, n_iter=15, feat_set=u'basic', seed=0,
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gold_preproc=False, force_gold=False):
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dep_model_dir = path.join(model_dir, 'deps')
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pos_model_dir = path.join(model_dir, 'pos')
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if path.exists(dep_model_dir):
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shutil.rmtree(dep_model_dir)
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if path.exists(pos_model_dir):
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shutil.rmtree(pos_model_dir)
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os.mkdir(dep_model_dir)
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os.mkdir(pos_model_dir)
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setup_model_dir(sorted(POS_TAGS.keys()), POS_TAGS, POS_TEMPLATES,
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pos_model_dir)
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left_labels, right_labels = get_labels(paragraphs)
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Config.write(dep_model_dir, 'config', features=feat_set, seed=seed,
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left_labels=left_labels, right_labels=right_labels)
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nlp = Language()
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for itn in range(n_iter):
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heads_corr = 0
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pos_corr = 0
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n_tokens = 0
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for tokens, tag_strs, heads, labels in iter_data(paragraphs, nlp.tokenizer,
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gold_preproc=gold_preproc):
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nlp.tagger(tokens)
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try:
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heads_corr += nlp.parser.train_sent(tokens, heads, labels, force_gold=force_gold)
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except OracleError:
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continue
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pos_corr += nlp.tagger.train(tokens, tag_strs)
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n_tokens += len(tokens)
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acc = float(heads_corr) / n_tokens
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pos_acc = float(pos_corr) / n_tokens
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print '%d: ' % itn, '%.3f' % acc, '%.3f' % pos_acc
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random.shuffle(paragraphs)
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nlp.parser.model.end_training()
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nlp.tagger.model.end_training()
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return acc
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def evaluate(Language, dev_loc, model_dir, gold_preproc=False):
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global loss
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nlp = Language()
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uas_corr = 0
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las_corr = 0
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pos_corr = 0
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n_tokens = 0
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total = 0
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skipped = 0
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loss = 0
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with codecs.open(dev_loc, 'r', 'utf8') as file_:
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#paragraphs = read_tokenized_gold(file_)
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paragraphs = read_docparse_gold(file_)
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for tokens, tag_strs, heads, labels in iter_data(paragraphs, nlp.tokenizer,
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gold_preproc=gold_preproc):
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assert len(tokens) == len(labels)
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nlp.tagger(tokens)
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nlp.parser(tokens)
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for i, token in enumerate(tokens):
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pos_corr += token.tag_ == tag_strs[i]
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n_tokens += 1
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if heads[i] is None:
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skipped += 1
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continue
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if is_punct_label(labels[i]):
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continue
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uas_corr += token.head.i == heads[i]
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las_corr += token.head.i == heads[i] and token.dep_ == labels[i]
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#print token.orth_, token.head.orth_, token.dep_, labels[i]
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total += 1
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print loss, skipped, (loss+skipped + total)
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print pos_corr / n_tokens
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print float(las_corr) / (total + loss)
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return float(uas_corr) / (total + loss)
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def main(train_loc, dev_loc, model_dir):
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with codecs.open(train_loc, 'r', 'utf8') as file_:
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train_sents = read_docparse_gold(file_)
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train(English, train_sents, model_dir, gold_preproc=False, force_gold=False)
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print evaluate(English, dev_loc, model_dir, gold_preproc=False)
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if __name__ == '__main__':
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plac.call(main)
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