Insight into Delay Based Reservoir Computing via Eigenvalue Analysis
arXiv:2009.07928 · doi:10.1088/2515-7647/abf237
Abstract
In this paper we give a profound insight into the computation capability of delay-based reservoir computing via an eigenvalue analysis. We concentrate on the task-independent memory capacity to quantify the reservoir performance and compare these with the eigenvalue spectrum of the dynamical system. We show that these two quantities are deeply connected, and thus the reservoir computing performance is predictable by analyzing the small signal response of the reservoir. Our results suggest that any dynamical system used as a reservoir can be analyzed in this way. We apply our method exemplarily to a photonic laser system with feedback and compare the numerically computed recall capabilities with the eigenvalue spectrum. Optimal performance is found for a system with the eigenvalues having real parts close to zero and off-resonant imaginary parts.
New Journal Submission
References in corpus (7)
- Recent Advances in Physical Reservoir Computing: A Review
- High performance photonic reservoir computer based on a coherently driven passive cavity
- Tutorial: Photonic Neural Networks in Delay Systems
- Machine learning algorithms for predicting the amplitude of chaotic laser pulses
- Performance boost of time-delay reservoir computing by non-resonant clock cycle
- Limitations of the recall capabilities in delay based reservoir computing systems
- Richness of Deep Echo State Network Dynamics