자동차 건조 공정 에너지 예측 모형을 위한 공조기 온도 시계열 데이터의 상관관계 분석

• 영문명: Correlation Analyses of the Temperature Time Series Data from the Heat Box for Energy Modeling in the Automobile Drying Process
• 발행기관: 한국산업경영시스템학회
• 저자명: 이창용(Chang-Yong Lee) 송근수(Gensoo Song) 김진호(Jinho Kim)
• 간행물 정보: 『산업경영시스템학회지』제37권 제2호, 27~34쪽, 전체 7쪽
• 주제분류: 경제경영 > 경영학
• 파일형태: PDF
• 발행일자: 2014.06.30

영문 초록

In this paper, we investigate the statistical correlation of the time series for temperature measured at the heat box in the automobile drying process. We show, in terms of the sample variance, that a significant non-linear correlation exists in the time series that consist of absolute temperature changes. To investigate further the non-linear correlation, we utilize the volatility, an important concept in the financial market, and induce volatility time series from absolute temperature changes. We analyze the time series of volatilities in terms of the de-trended fluctuation analysis (DFA), a method especially suitable for testing the long-range correlation of non-stationary data, from the correlation perspective. We uncover that the volatility exhibits a long-range correlation regardless of the window size. We also analyze the cross correlation between two (inlet and outlet) volatility time series to characterize any correlation between the two, and disclose the dependence of the correlation strength on the time lag. These results can contribute as important factors to the modeling of forecasting and management of the heat box's temperature.

목차

Abstract

1. 서론

2. 실험 환경 및 방법

3. 시계열 데이터의 비선형 상관관계

4. 변동성에 대한 상관관계 분석

5. 결론

References

키워드

Time series Correlation Volatility Long-range Correlation