[FIXED] Tensorflow Connectionist Temporal Classification (CTC) example

Issue

Is there a comprehensive CTC loss example with Tensorflow out there? The docs for tensorflow.contrib.ctc don't contain enough information for me. I know that there is one Stackoverflow post, but I can't get that to work.

Maybe someone has a complete (bidirectional) LSTM example with sample data that he/she could share. Thanks.

Solution

See here for an example with bidirectional LSTM and CTC implementations, training a phoneme recognition model on the TIMIT corpus. If you don't have access to TIMIT or another phoneme-transcribed data set, you probably won't get any decent performance with a single-layer model like this, but the basic structure should hold.

Update: If you don't have access to TIMIT, or you just want to see the thing run without formatting your inputs to make the code work, I've added an 8-sample toy data set that you can overfit to see the training in action.

Answered By - Jon Rein