"""Set up a model directory. Requires: lang_data --- Rules for the tokenizer * prefix.txt * suffix.txt * infix.txt * morphs.json * specials.json corpora --- Data files * WordNet * words.sgt.prob --- Smoothed unigram probabilities * clusters.txt --- Output of hierarchical clustering, e.g. Brown clusters * vectors.tgz --- output of something like word2vec """ from __future__ import unicode_literals from ast import literal_eval import math import gzip import json import plac from pathlib import Path from shutil import copyfile from shutil import copytree import codecs from collections import defaultdict from spacy.vocab import Vocab from spacy.vocab import write_binary_vectors from spacy.strings import hash_string from preshed.counter import PreshCounter from spacy.parts_of_speech import NOUN, VERB, ADJ import spacy.en import spacy.de import spacy.fi import spacy.it def setup_tokenizer(lang_data_dir, tok_dir): if not tok_dir.exists(): tok_dir.mkdir() for filename in ('infix.txt', 'morphs.json', 'prefix.txt', 'specials.json', 'suffix.txt'): src = lang_data_dir / filename dst = tok_dir / filename copyfile(str(src), str(dst)) def _read_clusters(loc): if not loc.exists(): print("Warning: Clusters file not found") return {} clusters = {} for line in codecs.open(str(loc), 'r', 'utf8'): try: cluster, word, freq = line.split() except ValueError: continue # If the clusterer has only seen the word a few times, its cluster is # unreliable. if int(freq) >= 3: clusters[word] = cluster else: clusters[word] = '0' # Expand clusters with re-casing for word, cluster in list(clusters.items()): if word.lower() not in clusters: clusters[word.lower()] = cluster if word.title() not in clusters: clusters[word.title()] = cluster if word.upper() not in clusters: clusters[word.upper()] = cluster return clusters def _read_probs(loc): if not loc.exists(): print("Probabilities file not found. Trying freqs.") return {}, 0.0 probs = {} for i, line in enumerate(codecs.open(str(loc), 'r', 'utf8')): prob, word = line.split() prob = float(prob) probs[word] = prob return probs, probs['-OOV-'] def _read_freqs(loc, max_length=100, min_doc_freq=5, min_freq=200): if not loc.exists(): print("Warning: Frequencies file not found") return {}, 0.0 counts = PreshCounter() total = 0 if str(loc).endswith('gz'): file_ = gzip.open(str(loc)) else: file_ = loc.open() for i, line in enumerate(file_): freq, doc_freq, key = line.split('\t', 2) freq = int(freq) counts.inc(i+1, freq) total += freq counts.smooth() log_total = math.log(total) probs = {} for line in loc.open(): freq, doc_freq, key = line.split('\t', 2) doc_freq = int(doc_freq) freq = int(freq) if doc_freq >= min_doc_freq and freq >= min_freq and len(key) < max_length: word = literal_eval(key) smooth_count = counts.smoother(int(freq)) log_smooth_count = math.log(smooth_count) probs[word] = math.log(smooth_count) - log_total oov_prob = math.log(counts.smoother(0)) - log_total return probs, oov_prob def _read_senses(loc): lexicon = defaultdict(lambda: defaultdict(list)) if not loc.exists(): print("Warning: WordNet senses not found") return lexicon sense_names = dict((s, i) for i, s in enumerate(spacy.senses.STRINGS)) pos_ids = {'noun': NOUN, 'verb': VERB, 'adjective': ADJ} for line in codecs.open(str(loc), 'r', 'utf8'): sense_strings = line.split() word = sense_strings.pop(0) for sense in sense_strings: pos, sense = sense[3:].split('.') sense_name = '%s_%s' % (pos[0].upper(), sense.lower()) if sense_name != 'N_tops': sense_id = sense_names[sense_name] lexicon[word][pos_ids[pos]].append(sense_id) return lexicon def setup_vocab(get_lex_attr, tag_map, src_dir, dst_dir): if not dst_dir.exists(): dst_dir.mkdir() vectors_src = src_dir / 'vectors.tgz' if vectors_src.exists(): write_binary_vectors(str(vectors_src), str(dst_dir / 'vec.bin')) else: print("Warning: Word vectors file not found") vocab = Vocab(get_lex_attr=get_lex_attr, tag_map=tag_map) clusters = _read_clusters(src_dir / 'clusters.txt') probs, oov_prob = _read_probs(src_dir / 'words.sgt.prob') if not probs: probs, oov_prob = _read_freqs(src_dir / 'freqs.txt') if not probs: oov_prob = -20 else: oov_prob = min(probs.values()) for word in clusters: if word not in probs: probs[word] = oov_prob lexicon = [] for word, prob in reversed(sorted(list(probs.items()), key=lambda item: item[1])): lexeme = vocab[word] lexeme.prob = prob lexeme.is_oov = False # Decode as a little-endian string, so that we can do & 15 to get # the first 4 bits. See _parse_features.pyx if word in clusters: lexeme.cluster = int(clusters[word][::-1], 2) else: lexeme.cluster = 0 vocab.dump(str(dst_dir / 'lexemes.bin')) vocab.strings.dump(str(dst_dir / 'strings.txt')) with (dst_dir / 'oov_prob').open('w') as file_: file_.write('%f' % oov_prob) def main(lang_id, lang_data_dir, corpora_dir, model_dir): languages = { 'en': spacy.en.English.default_lex_attrs(), 'de': spacy.de.German.default_lex_attrs(), 'fi': spacy.fi.Finnish.default_lex_attrs(), 'it': spacy.it.Italian.default_lex_attrs(), } model_dir = Path(model_dir) lang_data_dir = Path(lang_data_dir) / lang_id corpora_dir = Path(corpora_dir) / lang_id assert corpora_dir.exists() assert lang_data_dir.exists() if not model_dir.exists(): model_dir.mkdir() tag_map = json.load((lang_data_dir / 'tag_map.json').open()) setup_tokenizer(lang_data_dir, model_dir / 'tokenizer') setup_vocab(languages[lang_id], tag_map, corpora_dir, model_dir / 'vocab') if (lang_data_dir / 'gazetteer.json').exists(): copyfile(str(lang_data_dir / 'gazetteer.json'), str(model_dir / 'vocab' / 'gazetteer.json')) if (lang_data_dir / 'lemma_rules.json').exists(): copyfile(str(lang_data_dir / 'lemma_rules.json'), str(model_dir / 'vocab' / 'lemma_rules.json')) if not (model_dir / 'wordnet').exists() and (corpora_dir / 'wordnet').exists(): copytree(str(corpora_dir / 'wordnet' / 'dict'), str(model_dir / 'wordnet')) if __name__ == '__main__': plac.call(main)