1. A learning pattern presenting device in a learning system for use in a data processing apparatus for learning an input pattern by obtaining an internal-state value necessary for realizing a desired data conversion, comprising: means for dividing an input pattern group to be learned into at least two sets of a plurality of divided sets; and means for sequentially selecting a set from the plurality of divided sets, sequentially presenting each selected set to the learning system for training until convergence, and after training of the learning system for each selected sets, presenting a combination of the plurality of divided sets to the learning system for training to obtain a final internal state value.