1. A feature selection method of selecting features to be used to discriminate an object by a discriminator using learning data including the object by an information processing apparatus, the method comprising: an extraction step of extracting a plurality of partial data from the learning data; an obtaining step of obtaining discrimination values obtained hr controlling the discriminator to process the plurality of partial data extracted in the extraction step as features of the plurality of partial data; an evaluation step of evaluating the features obtained in the obtaining step based on discrimination degrees on a discrimination space defined by the discriminator; and a selection step of selecting features to be used to discriminate the object from a plurality of features obtained in association with the plurality of partial data based on an evaluation result in the evaluation step.