Analysis Approaches to Data of Both Age and Usage Attributes

Baik, Jai-Wook

Journal of Korean Society for Quality Management > Volume 35(1); 2007 > Article

Journal of Korean Society for Quality Management 2007;35(1): 136-.

시간과 사용량의 속성을 지닌 데이터의 분석방안

백재욱

한국방송통신대학교 정보통계학과

Analysis Approaches to Data of Both Age and Usage Attributes

Jai-Wook Baik

Department of Information Statistics, Korea National Open University

ABSTRACT

For many products failures depend on age and usage and, in this case, failures are random points in a two-dimensional plane with the two axes representing age and usage. Models play an important role in decision-making. In this research, an accelerate failure test (AFT) model is proposed to deal with the two-dimensional data. The parameters are proposed to be estimated through maximum likelihood estimators.

Key Words: Two-dimensional data;accelerated life test model;maximum likelihood estimator;