blocks.utils.ctc

Functions

• decode_ctc_prediction(): Decode raw CTC prediction to the actual output assuming that the last prediction bit

• decode_ctc_prediction_with_eos(): Same as decode_ctc_prediction() but cut the prediction (and indices) at <EOS> character assuming that

blocks.utils.ctc.decode_ctc_prediction(ctc_prediction)

Decode raw CTC prediction to the actual output assuming that the last prediction bit is reserved for the empty character.

Parameters

ctc_prediction (ndarray) – 2d array of time x probabilities

Return type

Tuple[list, list]

Returns

a tuple of (decoded predictions, indices of emitted characters)

blocks.utils.ctc.decode_ctc_prediction_with_eos(ctc_prediction)

Same as decode_ctc_prediction() but cut the prediction (and indices) at <EOS> character assuming that <EOS> = dim-2.

Parameters

ctc_prediction – 2d array of time x probabilities

Returns

a tuple of (decoded predictions, indices of emitted characters)