Specify heuristic for force alignment

1 files changed, 4 insertions, 2 deletions

diff --git a/word-aligner/force_align.py b/word-aligner/force_align.py
index 8b6ca224..b03d446e 100755
--- a/word-aligner/force_align.py
+++ b/word-aligner/force_align.py
@@ -5,13 +5,15 @@ import sys
 
 def main():
 
-    if len(sys.argv[1:]) != 4:
+    if len(sys.argv[1:]) < 4:
         sys.stderr.write('run:\n')
         sys.stderr.write('  fast_align -i corpus.f-e -d -v -o -p fwd_params >fwd_align 2>fwd_err\n')
         sys.stderr.write('  fast_align -i corpus.f-e -r -d -v -o -p rev_params >rev_align 2>rev_err\n')
         sys.stderr.write('\n')
         sys.stderr.write('then run:\n')
-        sys.stderr.write('  {} fwd_params fwd_err rev_params rev_err <in.f-e >out.f-e.gdfa\n'.format(sys.argv[0]))
+        sys.stderr.write('  {} fwd_params fwd_err rev_params rev_err [heuristic] <in.f-e >out.f-e.gdfa\n'.format(sys.argv[0]))
+        sys.stderr.write('\n')
+        sys.stderr.write('where heuristic is one of: (intersect union grow-diag grow-diag-final grow-diag-final-and) default=grow-diag-final-and\n')
         sys.exit(2)
 
     # Hook into realtime