CUSUM Charts for Dispersion Matrix with Variable Sampling Intervals

• 발행기관: 한국자료분석학회
• 저자명: Sung-Ho Moon Duk-Joon Chang
• 간행물 정보: 『Journal of The Korean Data Analysis Society (JKDAS)』Vol.4 No.4, 387~396쪽, 전체 10쪽
• 주제분류: 자연과학 > 통계학
• 파일형태: PDF
• 발행일자: 2002.12.30

영문 초록

Cumulative sum(CUSUM) control charts for monitoring dispersion matrix of related quality characteristics with variable sampling intervals(VSI) are investigated. Properties of the proposed charts are evaluated for matched fixed sampling interval(FSI) and VSI charts in terms of average time to signal(ATS) and average number of samples to signal(ANSS). Shewhart charts are also proposed to compare the performances of the CUSUM charts. The numerical results show that CUSUM quality control scheme based on the sample statistic TV_i is preferable and VSI CUSUM chart with small reference value is more efficient for small or moderate shifts.

목차

1. Introduction

2. Multivariate Sample Statistics

3. FSI Control Charts

4. VSI Control Charts

5. Computational Results and Concluding Remarks

References

키워드

Variable Sampling Intervals Average Time to Signal ANSS