The AWS Deep Learning AMIs now come with support for Chainer, a flexible and intuitive framework for neural networks. Chainer uses a “define-by-run” approach that enables developers to define their deep learning network architecture on the fly. Such dynamic computational graphs are especially helpful while working with recurrent neural networks (RNNs), and with inputs of variable length like in natural language processing. You can You can quickly get started with Chainer using our step-by-step tutorial