1. A model computation unit including: a floating point multiply and add operation unit for carrying out an arithmetic operation, comprising: processing circuitry configured to obtain two factors and a summand as input variables, that each is in a floating point value format, process the input variables, and output, based on the processing, a computation result in a floating point value format; wherein: the processing includes multiplying the factors and adding (a) a product of the multiplication and (b) the summand; and a bit resolution of the multiplied factors is lower than a bit resolution of the summand and is lower than a bit resolution of the computation result; and a memory configured to store hyperparameters and node data of a data-based function model, the hyperparameters and the node data being made available at the lower bit resolution; wherein the processing circuitry at least partly computes the data-based function model by performing arithmetic operations with the hyperparameters and the node data.