Title
Quaternion Recurrent Neural Networks.
Abstract
Recurrent neural networks (RNNs) are powerful architectures to model sequential data, due to their capability to learn short and long-term dependencies between the basic elements of a sequence. Nonetheless, popular tasks such as speech or images recognition, involve multi-dimensional input features that are characterized by strong internal dependencies between the dimensions of the input vector. We propose a novel quaternion recurrent neural network (QRNN) that takes into account both the external relations and these internal structural dependencies with the quaternion algebra. Similarly to capsules, quaternions allow the QRNN to code internal dependencies by composing and processing multidimensional features as single entities, while the recurrent operation reveals correlations between the elements composing the sequence. We show that the QRNN achieves better performances in both a synthetic memory copy task and in realistic applications of automatic speech recognition. Finally, we show that the QRNN reduces by a factor of 3x the number of free parameters needed, compared to RNNs to reach better results, leading to a more compact representation of the relevant information.
Year
Venue
Field
2018
international conference on learning representations
Sequential data,Pattern recognition,Quaternion,Recurrent neural network,Quaternion algebra,Artificial intelligence,Machine learning,Mathematics,Free parameter
DocType
Volume
Citations 
Journal
abs/1806.04418
2
PageRank 
References 
Authors
0.36
25
7
Name
Order
Citations
PageRank
Titouan Parcollet1169.23
Mirco Ravanelli218517.87
Mohamed Morchid38422.79
georges linar es413629.55
Chiheb Trabelsi5272.13
Renato De Mori6960161.75
Yoshua Bengio7426773039.83