Will do. In the meantime, I dug up the repository, and found some Python test cases, so I’ll work with that. Also, as promised, I shared my code on GitHub. Feel free to check it out, any comment is welcomed.
  
      

      GitHub
  

  
    

GitHub - harangp/tfjsctcloss: CTC loss and gradient implementation for... 4

  CTC loss and gradient implementation for Tensorflow.JS - GitHub - harangp/tfjsctcloss: CTC loss and gradient implementation for Tensorflow.JS