diff options
Diffstat (limited to 'python/pkg/cdec/sa/extract.py')
| -rw-r--r-- | python/pkg/cdec/sa/extract.py | 33 |
1 files changed, 27 insertions, 6 deletions
diff --git a/python/pkg/cdec/sa/extract.py b/python/pkg/cdec/sa/extract.py index 87b7d5d4..dc72c18c 100644 --- a/python/pkg/cdec/sa/extract.py +++ b/python/pkg/cdec/sa/extract.py @@ -10,11 +10,13 @@ import cdec.sa from cdec.sa._sa import monitor_cpu extractor, prefix = None, None +online = False + def make_extractor(config, grammars, features): - global extractor, prefix + global extractor, prefix, online signal.signal(signal.SIGINT, signal.SIG_IGN) # Let parent process catch Ctrl+C load_features(features) - extractor = cdec.sa.GrammarExtractor(config) + extractor = cdec.sa.GrammarExtractor(config, online) prefix = grammars def load_features(features): @@ -26,22 +28,37 @@ def load_features(features): sys.path.remove(prefix) def extract(inp): - global extractor, prefix + global extractor, prefix, online i, sentence = inp sentence = sentence[:-1] fields = re.split('\s*\|\|\|\s*', sentence) suffix = '' - if len(fields) > 1: - sentence = fields[0] - suffix = ' ||| ' + ' ||| '.join(fields[1:]) + # 3 fields for online mode, 1 for normal + if online: + if len(fields) < 3: + sys.stderr.write('Error: online mode requires references and alignments.' + ' Not adding sentence to training data: {0}\n'.format(sentence)) + sentence = fields[0] + else: + sentence, reference, alignment = fields[0:3] + if len(fields) > 3: + suffix = ' ||| ' + ' ||| '.join(fields[3:]) + else: + if len(fields) > 1: + sentence = fields[0] + suffix = ' ||| ' + ' ||| '.join(fields[1:]) grammar_file = os.path.join(prefix, 'grammar.{0}'.format(i)) with open(grammar_file, 'w') as output: for rule in extractor.grammar(sentence): output.write(str(rule)+'\n') + # Add training instance _after_ extracting grammars + if online: + extractor.add_instance(sentence, reference, alignment) grammar_file = os.path.abspath(grammar_file) return '<seg grammar="{0}" id="{1}"> {2} </seg>{3}'.format(grammar_file, i, sentence, suffix) def main(): + global online logging.basicConfig(level=logging.INFO) parser = argparse.ArgumentParser(description='Extract grammars from a compiled corpus.') parser.add_argument('-c', '--config', required=True, @@ -54,6 +71,8 @@ def main(): help='number of sentences / chunk') parser.add_argument('-f', '--features', nargs='*', default=[], help='additional feature definitions') + parser.add_argument('-o', '--online', action='store_true', default=False, + help='online grammar extraction') args = parser.parse_args() if not os.path.exists(args.grammars): @@ -64,6 +83,8 @@ def main(): ' should be a python module\n'.format(featdef)) sys.exit(1) + online = args.online + start_time = monitor_cpu() if args.jobs > 1: logging.info('Starting %d workers; chunk size: %d', args.jobs, args.chunksize) |