Neural network training method and device, electronic equipment and storage medium

The invention provides a neural network training method and device, electronic equipment and a storage medium, and the method comprises the steps: obtaining training data and a plurality of target neural networks obtained through training; performing feature extraction on the training data by using a plurality of target neural networks to obtain feature information output by a feature extraction layer included in each target neural network; based on the feature information output by the feature extraction layer included in each target neural network, determining a loss function value of a joint neural network to be trained, wherein the joint neural network is composed of a plurality of target neural networks and a connection layer between the feature extraction layers included in each target neural network; and carrying out at least one round of network training on the to-be-trained joint neural network based on the loss function value to obtain a trained joint neural network. According to the invention, the