1. An information processing apparatus comprising: an interpolation unit configured to interpolate, by using a model, at least either of feature amounts extracted from a plurality of medical images contained in case data and feature amounts extracted from a plurality of medical images contained in inspection data; a calculation unit configured to calculate similarities between the plurality of medical images contained in the inspection data and the plurality of medical images contained in the case data by using the feature amounts interpolated by the interpolation unit; and an output unit configured to output case data selected based on the calculated similarities.