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http://dx.doi.org/10.12812/ksms.2015.17.2.241

A Study on Analysis Method of Warranty Data Using Multivariate Model  

Kim, Jong-Gurl (Dept. of Industrial Engineering, Sungkyunkwan University)
Sung, Ki-Woo (Dept. of Industrial Engineering, Sungkyunkwan University)
Publication Information
Journal of the Korea Safety Management & Science / v.17, no.2, 2015 , pp. 241-247 More about this Journal
Abstract
The purpose of the warranty data analysis can be classified into two categories. Two goals is a failure cause analysis and life prediction analysis. In this paper first, we applied multivariate analysis method that can be estimated in consideration of various factors on the failure cause warranty data. In particular, we apply the Tree model and Cox model. The advantage of the Tree is easy to interpret this result as compared to other models. In addition Cox model can quantitatively express the risk. Second, this paper proposed a multivariate life prediction model (AFT) considering a variety of factors. By applying the actual warranty data confirmed the usability.
Keywords
Warranty Data; Accelerated failure time; AFT model; Tree model; Cox model;
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