Figure 5
From: Creating electronic oscillator-based Ising machines without external injection locking

Evaluation of the scalability of autaptic oscillator functionality using simulations. Bubble plot comparing the MaxCut solution obtained with the coupled EAOs (without external injection) with that obtained using coupled networks of conventional oscillators (under external second harmonic injection). Randomly instantiated graphs of various size (V: 32, 64, 128) and edge density (ƞ = 0.2, 0.4, 0.6, 0.8) are considered; 2 graphs are analyzed for every combination of V, ƞ; each graph is simulated 10 times. The results are obtained using simulations performed using SPICE. It can be observed that the MaxCut solutions produced by the oscillators are similar to those obtained using conventional oscillators.