From b939bff222736e87fa234c2835511cc29fce644f Mon Sep 17 00:00:00 2001
From: Victor Chahuneau <vchahune@cs.cmu.edu>
Date: Wed, 5 Sep 2012 19:17:29 +0100
Subject: Revert to the "old style" pair count...

+ API naming fixes
+ Multiple feature definition files can be passed to the extractor
---
 python/pkg/cdec/sa/extract.py   | 23 +++++++++++++----------
 python/pkg/cdec/sa/extractor.py |  2 ++
 2 files changed, 15 insertions(+), 10 deletions(-)

(limited to 'python/pkg')

diff --git a/python/pkg/cdec/sa/extract.py b/python/pkg/cdec/sa/extract.py
index 472f128b..3136c5a7 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', action='append',
                         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..940544fb 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)
-- 
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