Artificial Neural Networks (ANN's) in Ruby (unmaintained, unfortunately)
added supplementary save_state and load_state methods to transfer training @weights, @biases, @changes, etc into JSON form. can be used to transmit training state across networks without needing to retrain model which can then be used independently for further training.
Fixed bug with hidden_layer_sizes not being assigned properly.
Attribute specification, batch/incremental training and auto-inference of input vectors