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Please predict whether this patent is acceptable.PATENT ABSTRACT: Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for generating a system output from a system input. In one aspect, a neural network system includes a memory storing a set of register vectors and data defining modules, wherein each module is a respective function that takes as input one or more first vectors and outputs a second vector. The system also includes a controller neural network configured to receive a neural network input for each time step and process the neural network input to generate a neural network output. The system further includes a subsystem configured to determine inputs to each of the modules, process the input to the module to generate a respective module output, determine updated values for the register vectors, and generate a neural network input for the next time step from the updated values of the register vectors.