diff options
Diffstat (limited to 'python/pkg/cdec/sa/extract.py')
| -rw-r--r-- | python/pkg/cdec/sa/extract.py | 30 |
1 files changed, 26 insertions, 4 deletions
diff --git a/python/pkg/cdec/sa/extract.py b/python/pkg/cdec/sa/extract.py index b7d2fe6e..9fc37345 100644 --- a/python/pkg/cdec/sa/extract.py +++ b/python/pkg/cdec/sa/extract.py @@ -9,6 +9,8 @@ import signal import cdec.sa extractor, prefix = None, None +online = False + def make_extractor(config, grammars, features): global extractor, prefix signal.signal(signal.SIGINT, signal.SIG_IGN) # Let parent process catch Ctrl+C @@ -25,22 +27,38 @@ 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) + extractor.dump_online_stats() 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, @@ -53,6 +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): @@ -63,6 +83,8 @@ def main(): ' should be a python module\n'.format(featdef)) sys.exit(1) + online = args.online + if args.jobs > 1: logging.info('Starting %d workers; chunk size: %d', args.jobs, args.chunksize) pool = mp.Pool(args.jobs, make_extractor, (args.config, args.grammars, args.features)) |