1. An information processing method comprising: obtaining an image including a target object; obtaining a plurality of partial images of the image; deciding which partial learning image corresponds to each obtained partial image, wherein the partial learning image is a part of a learning image and is registered in a dictionary; obtaining a number of the partial images which are decided to correspond to the partial learning image for each partial learning image; determining whether a decision result for each partial learning image is appropriate based on the number of the partial images which are decided to correspond to the partial learning image for each partial learning image; and identifying an attribute of the target object based on a determination result.