1 files changed, 141 insertions, 0 deletions
diff --git a/src/moses.py b/src/moses.py
new file mode 100644
index 0000000..857ddbf
--- /dev/null
+++ b/src/moses.py
@@ -0,0 +1,141 @@
+import logging
+import os
+import subprocess
+import gzip
+
+class Moses:
+
+  def __init__(self, config):
+    self.config = config
+
+  def run_train(self):
+    args = [self.config.moses_train,
+            '--root-dir', self.config.experiment_dir,
+            '--corpus', '%s/%s' % (self.config.experiment_dir,
+                                   self.config.train_name),
+            '--f', self.config.src,
+            '--e', self.config.tgt,
+            '--lm', '0:3:%s/%s.arpa' % (self.config.experiment_dir, self.config.tgt),
+            #'-score-options', "'--OnlyDirect --NoPhraseCount'"
+            '--alignment', self.config.symm]
+    if self.config.model == 'hier':
+      args += ['-hierarchical', '-glue-grammar']
+
+    logging.info(' '.join(args))
+
+    log = open('%s/train.log' % self.config.experiment_dir, 'w')
+    p = subprocess.Popen(args, stdout=subprocess.PIPE, stderr=log)
+    p.wait()
+    log.close()
+
+  def run_retrain(self):
+    old_train_nl = '%s/%s.nl' % (self.config.experiment_dir,
+        self.config.train_name)
+    old_train_mrl = '%s/%s.mrl' % (self.config.experiment_dir,
+        self.config.train_name)
+    moved_train_nl = '%s.notune' % old_train_nl
+    moved_train_mrl = '%s.notune' % old_train_mrl
+    tune_nl = '%s/tune.nl' % self.config.experiment_dir
+    tune_mrl = '%s/tune.mrl' % self.config.experiment_dir
+    os.rename(old_train_nl, moved_train_nl)
+    os.rename(old_train_mrl, moved_train_mrl)
+    with open(old_train_nl, 'w') as rt_train_nl:
+      subprocess.call(['cat', moved_train_nl, tune_nl], stdout=rt_train_nl)
+    with open(old_train_mrl, 'w') as rt_train_mrl:
+      subprocess.call(['cat', moved_train_mrl, tune_mrl], stdout=rt_train_mrl)
+
+    os.remove('%s/model/extract.inv.gz' % self.config.experiment_dir)
+    os.remove('%s/model/extract.gz' % self.config.experiment_dir)
+    if self.config.model == 'hier':
+      os.remove('%s/model/rule-table.gz' % self.config.experiment_dir)
+    else:
+      os.remove('%s/model/phrase-table.gz' % self.config.experiment_dir)
+
+    self.run_train()
+
+  def parens_ok(self, line):
+    mrl_part = line.split(' ||| ')[1]
+    tokens = [t[-1] for t in mrl_part.split() if t[-2] == '@']
+    tokens.reverse()
+    stack = []
+    while tokens:
+      t = tokens.pop()
+      assert t != '*'
+      if t == 's':
+        t = 0
+      t = int(t)
+      if t > 0:
+        stack.append(t)
+      else:
+        while stack:
+          top = stack.pop()
+          if top > 1:
+            stack.append(top - 1)
+            break
+        if tokens and not stack:
+          return False
+    return True
+
+  def filter_phrase_table(self):
+    table_name = 'phrase' if self.config.model == 'phrase' else 'rule'
+    oldname = '%s/model/%s-table.gz' % (self.config.experiment_dir, table_name)
+    newname = '%s/model/%s-table.old.gz' % (self.config.experiment_dir, table_name)
+    os.rename(oldname, newname)
+
+    with gzip.open(oldname, 'w') as filtered_table_f:
+      with gzip.open(newname, 'r') as old_table_f:
+        for line in old_table_f:
+          if self.parens_ok(line):
+            print >>filtered_table_f, line,
+
+  def run_tune(self):
+    wd = os.getcwd()
+    os.chdir(self.config.experiment_dir)
+    args = [self.config.moses_tune,
+            '%s/tune.%s' % (self.config.experiment_dir, self.config.src),
+            '%s/tune.%s' % (self.config.experiment_dir, self.config.tgt)]
+    if self.config.model == 'hier':
+      args += [self.config.moses_decode_hier]
+    else:
+      args += [self.config.moses_decode_phrase]
+    args += ['%s/model/moses.ini' % self.config.experiment_dir,
+             '--mertdir', '%s/dist/bin' % self.config.moses]
+    if self.config.model == 'hier':
+      args += ['--filtercmd', 
+               '%s/scripts/training/filter-model-given-input.pl --Hierarchical'\
+                   % self.config.moses]
+
+    log = open('%s/tune.log' % self.config.experiment_dir, 'w')
+    p = subprocess.Popen(args, stdout=subprocess.PIPE, stderr=log)
+    p.wait()
+    log.close()
+    os.chdir(wd)
+
+  def run_decode(self):
+    if self.config.model == 'phrase':
+      args = [self.config.moses_decode_phrase]
+    elif self.config.model == 'hier':
+      args = [self.config.moses_decode_hier]
+    else:
+      assert False
+
+    if self.config.run == 'test':
+      args += ['-f', '%s/mert-work/moses.ini' % self.config.experiment_dir]
+    else:
+      args += ['-f', '%s/model/moses.ini' % self.config.experiment_dir]
+    #args += ['-f', '%s/model/moses.ini' % self.config.experiment_dir]
+
+    args += ['-drop-unknown',
+             '-n-best-list', '%s/hyp.%s.nbest' % (self.config.experiment_dir, self.config.tgt),
+                             str(self.config.nbest), 'distinct',
+             '-threads', '3']
+
+    #nullfile = open(os.devnull, 'w')
+    infile = open('%s/test.%s' % (self.config.experiment_dir, self.config.src))
+    outfile = open('%s/hyp.%s' % (self.config.experiment_dir, self.config.tgt), 'w')
+    log = open('%s/decode.log' % self.config.experiment_dir, 'w')
+    p = subprocess.Popen(args, stdin=infile, stdout=outfile, stderr=log)
+    p.wait()
+    infile.close()
+    log.close()
+    outfile.close()