[src] fix kws pipeline after upgrading to openfst-1.6 (#1471)

src/fstbin/fsts-union.cc

@@ -71,9 +71,10 @@ int main(int argc, char *argv[]) {
       } else {
         if (res_key != "") {
           VectorFst<StdArc> out_fst;
-          fst::Minimize(&res_fst);
-          fst::RmEpsilon(&res_fst);
-          fst_writer.Write(res_key, res_fst);
+          fst::Determinize(res_fst, &out_fst);
+          fst::Minimize(&out_fst);
+          fst::RmEpsilon(&out_fst);
+          fst_writer.Write(res_key, out_fst);
           n_out_done++;
         }
         res_fst = fst;
@@ -82,9 +83,10 @@ int main(int argc, char *argv[]) {
     }
     if (res_key != "") {
       VectorFst<StdArc> out_fst;
-      fst::Minimize(&res_fst);
-      fst::RmEpsilon(&res_fst);
-      fst_writer.Write(res_key, res_fst);
+      fst::Determinize(res_fst, &out_fst);
+      fst::Minimize(&out_fst);
+      fst::RmEpsilon(&out_fst);
+      fst_writer.Write(res_key, out_fst);
       n_out_done++;
     }
 

src/kwsbin/kws-index-union.cc

@@ -92,7 +92,7 @@ int main(int argc, char *argv[]) {
                    << " (should affect speed of search but not results)";
         global_index = ifst;
       }
-      Minimize(&global_index);
+      Minimize(&global_index, static_cast<KwsLexicographicFst*>(NULL), kDelta, true);
       Decode(&global_index, encoder);
     } else {
       KALDI_LOG << "Skipping index optimization...";