Face recognition method based on evolutionary convolutional neural network

Abstract

A face recognition method based on an evolutionary convolutional neural network is provided. The method optimizes the design of convolutional neural network architecture and the initialization of connection weights by using a genetic algorithm and finds an optimal neural network through continuous evolutionary calculation, thus reducing dependence on artificial experience during the design of the convolutional neural network architecture. The method encodes the convolutional neural networks by using a variable-length genetic encoding algorithm, so as to improve the diversity of structures of convolutional neural networks. Additionally, in order to cross over extended chromosomes, structural units at corresponding positions are separately crossed over and then recombined, thereby realizing the crossover of chromosomes with different lengths. In the environmental selection stage, the method first performs elitist selection, and then compares two groups of fitness values of the remaining individuals in the population for further selecting, which ensures the elitist and the diversity.