diff options
Diffstat (limited to 'python/pkg/cdec/sa')
| -rw-r--r-- | python/pkg/cdec/sa/__init__.py | 16 | ||||
| -rw-r--r-- | python/pkg/cdec/sa/extract.py | 23 | ||||
| -rw-r--r-- | python/pkg/cdec/sa/extractor.py | 13 |
3 files changed, 37 insertions, 15 deletions
diff --git a/python/pkg/cdec/sa/__init__.py b/python/pkg/cdec/sa/__init__.py index cc532fb9..e0a344b7 100644 --- a/python/pkg/cdec/sa/__init__.py +++ b/python/pkg/cdec/sa/__init__.py @@ -1,10 +1,24 @@ -from cdec.sa._sa import sym_fromstring,\ +from cdec.sa._sa import make_lattice, decode_lattice, decode_sentence,\ SuffixArray, DataArray, LCP, Precomputation, Alignment, BiLex,\ HieroCachingRuleFactory, Sampler, Scorer from cdec.sa.extractor import GrammarExtractor _SA_FEATURES = [] +_SA_ANNOTATORS = {} +_SA_CONFIGURE = [] def feature(fn): _SA_FEATURES.append(fn) return fn + +def annotator(fn): + _SA_ANNOTATORS[fn.__name__] = fn + +def annotate(sentence): + meta = {} + for name, fn in _SA_ANNOTATORS.iteritems(): + meta[name] = fn(sentence) + return meta + +def configure(fn): + _SA_CONFIGURE.append(fn) diff --git a/python/pkg/cdec/sa/extract.py b/python/pkg/cdec/sa/extract.py index 472f128b..10a81556 100644 --- a/python/pkg/cdec/sa/extract.py +++ b/python/pkg/cdec/sa/extract.py @@ -11,16 +11,17 @@ extractor, prefix = None, None def make_extractor(config, grammars, features): global extractor, prefix signal.signal(signal.SIGINT, signal.SIG_IGN) # Let parent process catch Ctrl+C - if features: load_features(features) + load_features(features) extractor = cdec.sa.GrammarExtractor(config) prefix = grammars def load_features(features): - logging.info('Loading additional feature definitions from %s', features) - prefix = os.path.dirname(features) - sys.path.append(prefix) - __import__(os.path.basename(features).replace('.py', '')) - sys.path.remove(prefix) + for featdef in features: + logging.info('Loading additional feature definitions from %s', featdef) + prefix = os.path.dirname(featdef) + sys.path.append(prefix) + __import__(os.path.basename(featdef).replace('.py', '')) + sys.path.remove(prefix) def extract(inp): global extractor, prefix @@ -44,15 +45,17 @@ def main(): help='number of parallel extractors') parser.add_argument('-s', '--chunksize', type=int, default=10, help='number of sentences / chunk') - parser.add_argument('-f', '--features', type=str, default=None, + parser.add_argument('-f', '--features', nargs='*', default=[], help='additional feature definitions') args = parser.parse_args() if not os.path.exists(args.grammars): os.mkdir(args.grammars) - if not (args.features is None or args.features.endswith('.py')): - sys.stderr.write('Error: feature definition file should be a python module\n') - sys.exit(1) + for featdef in args.features: + if not featdef.endswith('.py'): + sys.stderr.write('Error: feature definition file <{0}>' + ' should be a python module\n'.format(featdef)) + sys.exit(1) if args.jobs > 1: logging.info('Starting %d workers; chunk size: %d', args.jobs, args.chunksize) diff --git a/python/pkg/cdec/sa/extractor.py b/python/pkg/cdec/sa/extractor.py index 89e35bf8..a5ce8a68 100644 --- a/python/pkg/cdec/sa/extractor.py +++ b/python/pkg/cdec/sa/extractor.py @@ -57,6 +57,8 @@ class GrammarExtractor: # lexical weighting tables tt = cdec.sa.BiLex(from_binary=config['lex_file']) + # TODO: use @cdec.sa.features decorator for standard features too + # + add a mask to disable features scorer = cdec.sa.Scorer(EgivenFCoherent, SampleCountF, CountEF, MaxLexFgivenE(tt), MaxLexEgivenF(tt), IsSingletonF, IsSingletonFE, *cdec.sa._SA_FEATURES) @@ -69,11 +71,14 @@ class GrammarExtractor: sampler = cdec.sa.Sampler(300, fsarray) self.factory.configure(fsarray, edarray, sampler, scorer) + # Initialize feature definitions with configuration + for fn in cdec.sa._SA_CONFIGURE: + fn(config) def grammar(self, sentence): if isinstance(sentence, unicode): sentence = sentence.encode('utf8') - cnet = chain(('<s>',), sentence.split(), ('</s>',)) - cnet = (cdec.sa.sym_fromstring(word, terminal=True) for word in cnet) - cnet = tuple(((word, None, 1), ) for word in cnet) - return self.factory.input(cnet) + words = tuple(chain(('<s>',), sentence.split(), ('</s>',))) + meta = cdec.sa.annotate(words) + cnet = cdec.sa.make_lattice(words) + return self.factory.input(cnet, meta) |