Sparse NNs for Control

Best Student Paper Award, ICANN 2025

Results

The following table compares our spatially embedded models to the best performing models (“expert”) from the Farama-Minari repository, trained with PPO, SAC, and TQC, by analyzing their architectures and weight counts. The “RWN” column indicates the ratio of non-zero weights in the spatial SNN compared to the SOTA model, while “RP” shows the relative performance.

EnvironmentSOTA WeightsSpatial WeightsRWN (%)SOTA PerformanceSpatial PerformanceRP (%)
Swimmer9,4081371.46363.7 ± 1.8361.8 ± 1.799.48
Hopper347,3922220.064098.2 ± 247.72706.1 ± 73.766.03
HalfCheetah384,2567030.1817641.8 ± 61.93670.4 ± 1198.320.81
Walker2d359,6806940.196956.6 ± 15.92492.0 ± 247.735.82
Ant475,3921,2080.255846.3 ± 138.51346.8 ± 35.123.04

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