METHOD FOR CONTROLLING IMAGE FORMING APPARATUS BY GENERATING LEARNED MODEL AND IMAGE FORMING APPARATUS WITH LEARNED MODEL

An image forming apparatus includes a member having a certain function, a learned model, and an estimation unit. The learned model is obtained by learning of a self-organizing map model having an input layer and an output layer. The estimation unit gives multidimensional input data related to the member to the input layer, and estimates a state of the member on the basis of one of a plurality of nodes of the output layer.