Time delay systems for reservoir computing
Ortín, Silvia; Pesquera, Luis; Van der Sande, Guy; Soriano, Miguel C.
Photonic Reservoir Computing: Optical Recurrent Neural Networks, De Gruyter, 117-151 (2019)
Delay-based reservoir computers are reservoir computing implementations based on dynamical systems with delay. The dynamical system is often a single nonlinear node. As it will be explained later in more detail, delay-based reservoir computers assign different time-slots of the nonlinear node response to different network nodes, also known as virtual nodes. This time multiplexing of a single nonlinear node’s response is equivalent to having a distributed set of virtual nodes along the delayed feedback loop.