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Please predict whether this patent is acceptable.PATENT ABSTRACT: A first intermediate layer activity level calculator refers to an index stored in a first intermediate layer storage, acquires, from among activity levels of respective nodes in an input layer calculated by an input layer activity level calculator and weight for respective edges and bias values stored in the first intermediate layer storage, an activity level of each node in the input layer that is connected with each node in the first intermediate layer and weight for each of edges and a bias value thereof, and calculates an activity level of each node in the first intermediate layer using the activity level of each node in the first input layer and the weight for each of the edges and the bias value having been acquired. This is capable of reducing the calculation amount and the memory amount upon performing inference, and also obtaining higher inference accuracy.