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Generally non-linear regression model containing standardized lift for association number estimation

연관성 규칙 수의 추정을 위한 일반적인 비선형 회귀모형에서의 표준화 향상도 활용 방안

  • Received : 2016.04.21
  • Accepted : 2016.05.21
  • Published : 2016.05.31

Abstract

Among data mining techniques, the association rule is one of the most used in the real fields because it clearly displays the relationship between two or more items in large databases by quantifying the relationship between the items. There are three primary quality measures for association rule; support, confidence, and lift. We evaluate association rules using these measures. The approach taken in the previous literatures as to estimation of association rule number has been one of a determination function method or a regression modeling approach. In this paper, we proposed a few of non-linear regression equations useful in estimating the number of rules and also evaluated the estimated association rules using the quality measures. Furthermore we assessed their usefulness as compared to conventional regression models using the values of regression coefficients, F statistics, adjusted coefficients of determination and variation inflation factor.

최근에 많이 활용되고 있는 데이터 분석을 위한 연관성 규칙 마이닝은 대용량 데이터베이스에 많이 활용되고 있는 서 두 항목간의 관계를 측도화 함으로써 두 개 이상의 항목간의 관련성을 표시하여 주는 기법이다. 연관성 규칙의 여부를 판단하기 위한 연관성 평가 기준에는 지지도, 신뢰도, 그리고 향상도 등이 있으며, 이들 세 가지 기준을 이용하여 연관성 규칙 생성 여부를 판단하게 된다. 이에 대한 기존의 연구 결과는 결정함수를 이용하는 방법과 회귀모형을 이용하는 방법으로 분류할 수 있다. 회귀모형을 이용하여 수행한 연구에는 지지도와 신뢰도에 의한 모형, 세 가지 평가 기준의 쌍에 의한 모형, 표준화 향상도를 포함한 세 가지 평가 기준의 쌍에 의한 모형, 그리고 세 가지 평가 기준 전부를 고려한 모형 등이 있다. 본 논문에서는 기존의 연구를 확장하는 의미에서 표준화 향상도를 포함한 세가지 평가 기준 전부를 고려한 비선형 회귀모형을 이용하여 연관성 규칙의 수를 추정하는 방안에 대해 강구하고자 한다. 또한 분산분석에서의 F 통계량과 수정 결정계수를 이용하여 각 모형의 유의한 정도를 비교하는 동시에 분산팽창계수에 의한 공선성 문제를 진단함으로써 가장 유용한 회귀 모형을 탐색하고자 한다.

Keywords

References

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