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Blank or EMP label #105

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mfouadthabet opened this issue Jul 7, 2018 · 0 comments

mfouadthabet commented Jul 7, 2018

According to tensorflow ctc documentation the bank label should be in the last position in the vocabulary,

For example, for a vocabulary containing 3 labels `[a, b, c]`,
  `num_classes = 4` and the labels indexing is `{a: 0, b: 1, c: 2, blank: 3}`.

the code in data.py implement it is on index value 0.

# index to byte mapping
index2byte = ['<EMP>', ' ', 'a', 'b', 'c', 'd', 'e', 'f', 'g',
              'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q',
              'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z']

Is this a bug?

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