-CTC cost is implemented in pure Theano.
-Supports mini-batch.
-Supports both normal- and log-scale.
-"apple" problem (two same consecutive labels) is solved.
-Test file is implemented using Blocks.
Graves, Alex, et al. "Connectionist temporal classification: labelling unsegmented sequence data with recurrent neural networks." Proceedings of the 23rd international conference on Machine learning. ACM, 2006.
Theano implementation of CTC by Shawn Tan
Theano implementation of CTC by Rakesh Var
Pascal Lambdin