23. The non-transitory computer-readable storage medium according to claim 22 , wherein in Step (b), the training data candidates assigned a specified label in the cluster containing the specified label at or above a predetermined percentage are used as the training data having the specified label.
24. The non-transitory computer-readable storage medium according to claim 23 , wherein in Step (b), the training data candidates that are not assigned the specified label in the cluster containing the specified label at or above a predetermined percentage are deleted from the entire set of the training data candidates.