Reservoir Network with Structural Plasticity for Human Activity Recognition

• URL: http://arxiv.org/abs/2503.00393v1
• Date: Sat, 01 Mar 2025 07:57:22 GMT
• Title: Reservoir Network with Structural Plasticity for Human Activity Recognition
• Authors: Abdullah M. Zyarah, Alaa M. Abdul-Hadi, Dhireesha Kudithipudi,
• Abstract summary: Echo state network (ESN) is a class of recurrent neural networks that can be used to identify unique patterns in time-series data and predict future events.<n>In this work, a custom-design neuromorphic chip based on ESN targeting edge devices is proposed.<n>The proposed system supports various learning mechanisms, including structural plasticity and synaptic plasticity, locally on-chip.
• Score: 2.355460994057843
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: The unprecedented dissemination of edge devices is accompanied by a growing demand for neuromorphic chips that can process time-series data natively without cloud support. Echo state network (ESN) is a class of recurrent neural networks that can be used to identify unique patterns in time-series data and predict future events. It is known for minimal computing resource requirements and fast training, owing to the use of linear optimization solely at the readout stage. In this work, a custom-design neuromorphic chip based on ESN targeting edge devices is proposed. The proposed system supports various learning mechanisms, including structural plasticity and synaptic plasticity, locally on-chip. This provides the network with an additional degree of freedom to continuously learn, adapt, and alter its structure and sparsity level, ensuring high performance and continuous stability. We demonstrate the performance of the proposed system as well as its robustness to noise against real-world time-series datasets while considering various topologies of data movement. An average accuracy of 95.95% and 85.24% are achieved on human activity recognition and prosthetic finger control, respectively. We also illustrate that the proposed system offers a throughput of 6x10^4 samples/sec with a power consumption of 47.7mW on a 65nm IBM process.

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