[fix] handle case of T = 0 in Viterbi decoding

2017-03-12 22:55:48 -04:00
parent 35ccb3ee62
commit 6cf113b1df
2 changed files with 8 additions and 2 deletions
--- a/src/crf_context.c
+++ b/src/crf_context.c
@@ -564,6 +564,9 @@ double crf_context_viterbi(crf_context_t *self, uint32_t *labels) {
    const double *trans = NULL;

    const size_t T = self->num_items;
+    if (T == 0) {
+        return max_score;
+    }
    const size_t L = self->num_labels;

    // This function assumes state and trans scores to be in the logarithm domain.