이상 진단은 주어진 데이터의 정상 유무를 진단하는 방법으로써 다양한 분야에 걸쳐 요구되는 기능이다. 이상 진단은 대상 환경에서 발생하는 데이터의 특성 등에 따라 다양한 방법으로 구현이 될 수 있는데, 본 연구에서는 정상 데이터가 다수의 클래스로 구분될 수 있는 상황에서의 이상 진단을 효과적으로 할 수 있는 방법에 대해서 다루고자 한다. 특히, 실험을 통해 정상 데이터를 유사한 데이터들끼리 구분하여 처리하는 경우와 그렇지 않은 경우의 비교를 통해서, 정상 데이터를 유사한 데이터들끼리 구분하여 이상 진단을 진행하는 방법의 타당성을 검증한다.
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