zhiheng-huang commented on a change in pull request #7727: change contrib CTC
to zero-indexed, in log space. sequence mask for grad
URL: https://github.com/apache/incubator-mxnet/pull/7727#discussion_r137368739
##########
File path: example/ctc/lstm_ocr.py
##########
@@ -59,7 +59,7 @@ def gen_rand():
def get_label(buf):
ret = np.zeros(4)
for i in range(len(buf)):
- ret[i] = 1 + int(buf[i])
+ ret[i] = int(buf[i])
Review comment:
My understanding is that zero is reserved for CTC blank label, then we shall
not use zero as label (which is ensured by the old code).
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