I am not an expert, but maybe look into recurrent neural networks [0]? These things can turn a sequence of inputs of possibly arbitrary length into a fixed size

I am not an expert, but maybe look into recurrent neural networks [0]? These things can turn a sequence of inputs of possibly arbitrary length into a fixed size internal representation, and can output a single value derived from this representation. [0] https://en.wikipedia.org/wiki/Recurrent_neural_network https://en.wikipedia.org/wiki/Recurrent_neural_network