1. A method for generating a training model based on feedback, comprising: calculating an eigenvector of an image data sample among a plurality of image data samples; obtaining total scores granted by at least one user for at least one of the plurality of image data samples in at least one round, comprising: obtaining first sample scores granted by the at least one user for a first number of image data samples; displaying a second number of image data samples to the at least one user for obtaining second sample scores granted by the at least one user for the second number of image data samples in response to having detected, based on the eigenvector, an inconsistency in the first sample scores; and generating a training model stored in non-transitory computer readable storage media based on the total scores granted by the at least one user.