Variational Tensor Neural Networks for Deep Learning

• URL: http://arxiv.org/abs/2211.14657v2
• Date: Sun, 8 Jan 2023 13:58:58 GMT
• Title: Variational Tensor Neural Networks for Deep Learning
• Authors: Saeed S. Jahromi, Roman Orus
• Abstract summary: We propose the integration of tensor networks (TN) into deep neural networks (NNs) This results in a scalable tensor neural network (TNN) architecture that can be efficiently trained for a large number of neurons and layers. Our training algorithm provides insight into the entanglement structure of the tensorized trainable weights, as well as clarify the expressive power as a quantum neural state.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Deep neural networks (NN) suffer from scaling issues when considering a large number of neurons, in turn limiting also the accessible number of layers. To overcome this, here we propose the integration of tensor networks (TN) into NNs, in combination with variational DMRG-like optimization. This results in a scalable tensor neural network (TNN) architecture that can be efficiently trained for a large number of neurons and layers. The variational algorithm relies on a local gradient-descent technique, with tensor gradients being computable either manually or by automatic differentiation, in turn allowing for hybrid TNN models combining dense and tensor layers. Our training algorithm provides insight into the entanglement structure of the tensorized trainable weights, as well as clarify the expressive power as a quantum neural state. We benchmark the accuracy and efficiency of our algorithm by designing TNN models for regression and classification on different datasets. In addition, we also discuss the expressive power of our algorithm based on the entanglement structure of the neural network.

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