Unitary neural network is able to solve gradient vanishing and gradient explosion problem and help learning long term dependency. EUNN is an efficient and strictly enforced unitary parametrization based on SU(2) group. This repository contains the implementation of Efficient Unitary Neural Network(EUNN) in tensorflow.

If you find this work useful, please cite arXiv:1612.05231. The current implementation is developed by Ivan Ivanov.

requires TensorFlow 1.2.0

./demo.sh

To use EUNN in your model, simply copy EUNN.py. You don't need to install or write C code.

Then you can use EUNN in the same way you use built-in LSTM:

from EUNN import EUNNCell
cell = EUNNCell(n_hidden, capacity=2, fft=False, comp=True)

Args:

• n_hidden: Integer.
• capacity: Optional. Integer. Only works for tunable style.
• fft: Optional. Bool. If True, EUNN is set to FFT style. Default is False.
• comp: Optional. Bool. If True, EUNN is set to complex domain. Default is True.

Note:

• For complex domain, the data type should be tf.complex64
• For real domain, the data type should be tf.float32

Two tasks for RNN in the paper are shown here. Use -h for more information

python copying_task.py EUNN -T 200

python mnist_task.py EUNN -I 20000 -H 512 -C False