Synapse is a beauty, funny application which allows you train the SGD model to recognize MNIST handwritten digits on the local device directly. It does not depend on any deep learning library, just a pure Java implementation, for learning purposes only.

Encourage you to take a look at Neural Networks and Deep Learning which is written by Michael Nielsen.

Enjoy Yourself

If your device doesn't have Google Play, you can download it from this site.

License

Copyright 2016 HuazhouWang.

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

   http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.