본 논문은 학습 속도가 계층별 학습처럼 빠르며, 일반화 성능이 우수한 학습 방법을 제안한다. 제안한 방법은 최소 제곱법을 통해 구한 은닉층의 목표값을 이용하여 은닉층의 가중치를 조정하는 방법으로, 은닉층 경사 벡터의 크기가 작아 학습이 지연되는 것을 막을 수 있다. 필기체 숫자인식 문제를 대상으로 실험한 결과, 제안한 방법의 학습 속도는 오류역전파 학습과 수정된 오차 함수의 학습보다 빠르고, Ooyen의 방법과 계층별 학습과는 비슷했다. 또한, 일반화 성능은 은닉노드의 수에 관련없이 가장 좋은 결과를 얻었다. 결국, 제안한 방법은 계층별 학습의 학습 속도와 오류역전파 학습과 수정된 오차 함수의 일반화 성능을 장점으로 가지고 있음을 확인하였다.
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