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Diffstat (limited to 'decoder/viterbi.h')
| -rw-r--r-- | decoder/viterbi.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/decoder/viterbi.h b/decoder/viterbi.h index e78cd157..ac0b9a11 100644 --- a/decoder/viterbi.h +++ b/decoder/viterbi.h @@ -55,6 +55,8 @@ typename WeightFunction::Weight Viterbi(const Hypergraph& hg, antsb[k] = &vit_result[edgeb.tail_nodes_[k]]; traverse(edgeb, antsb, cur_node_best_result); } + if (vit_result.empty()) + return WeightType(0); std::swap(*result, vit_result.back()); return vit_weight.back(); } |