some minor changes to CCTC training

src/ctc/Makefile

@@ -9,7 +9,7 @@ LDLIBS += $(CUDA_LDLIBS)
 TESTFILES = language-model-test cctc-transition-model-test
 
 OBJFILES = language-model.o cctc-transition-model.o cctc-graph.o \
-           ctc-supervision.o
+           ctc-supervision.o cctc-training.o
 # ctc-functions.o
 
 LIBNAME = kaldi-ctc

src/ctc/cctc-training.cc

@@ -96,10 +96,11 @@ bool CctcTraining::ComputeDerivatives(
   // denominator_probs_ itself as the derivative.
   denominator_deriv_.DivElements(denominator_probs_);
 
-  // We reuse the normalizers_ array to be the derivatives
+  // We will reuse the normalizers_ array to be the derivatives
   // w.r.t. the normalizers.
   normalizers_.SetZero();
   
+  
 
 }
 

src/ctc/cctc-training.h

@@ -120,7 +120,7 @@ class CctcComputation {
   
   // numerator_indexes is a list of indexes that we need to look up in
   // exp_nnet_output_ for the forward-backward computation.  The order is not
-  // important. indexes into this vector appear in .first members in
+  // important, but indexes into this vector appear in .first members in
   // fst_indexes.
   std::vector<Int32Pair> numerator_indexes_;
   // the numerator of the probability.  in the forward computation,
@@ -130,9 +130,9 @@ class CctcComputation {
   Vector<BaseFloat> numerator_probs_;
     
 
-  // numerator_indexes is a list of indexes that we need to look up in
+  // denominator_indexes is a list of indexes that we need to look up in
   // normalizers_ for the forward-backward computation.  The order is not
-  // important. indexes into this vector appear in .second members in
+  // important, but indexes into this vector appear in .second members in
   // fst_indexes.
   std::vector<Int32Pair> denominator_indexes_;
   // the denominator of the probability.  denominator_probs_[i] equals