Two-Stream Fused Fuzzy Deep Neural Network for Multiagent Learning

In multiagent reinforcement learning (RL), multilayer fully connected neural network is used for value function approximation, which solves large-scale or continuous space problems. However, it is easy to fall into a local optimal and overfitting under partially observed environments. Because each agent lacks the information that plays a key role in decision making beyond the observation field. Even if communication is allowed, the received informations in communication channel have large noise due to the observations of other agents and strong uncertainty if the agent's policy is used as the communication information. To tackle this problem, two-stream fused fuzzy deep neural network (2s-FDNN) was proposed to reduce the uncertainty and noise of information in the communication channel. It is a parallel structure in which the fuzzy inference module reduces the uncertainty of information and the deep neural module reduces the noise of information. Then, we presented Fuzzy MA2C which integrates 2s-FDNN into multiagent deep RL to deal with uncertain communication informations for improving the robustness and generalization under partially observed environments. We empirically evaluate our methods in two large-scale traffic signal control environments using simulation of urban mobility (SUMO) simulator. Results demonstrate that our methods can achieve superior performance against existing RL algorithms.