EMM stands for External Memory Module.
The initial implementation, EMM_NTM is very similar to a normal NTM except it's more self-contained. The other differences include an arbitrary number of read heads - which only requires minimal changes to the controller network to actually make use of. I have also implemented multiple memory banks which was inspired by Neural GPUs Learn Algorithms by Kaiser and Sutskever.
I'm currently working also on EMM_GPU which is an external memory module even more inspired by the Neural GPU. I'm not sure how to do this, but I'm trying to create a 3D memory that's addressed by convolution filters to read in and out.
My original NTM project is here
Contributing: Fork the repo and play with it! I'm always happy to hear suggestions!