Rebuilding DEMATEL threshold value: an example of a food and beverage information system.
This study demonstrates how a decision-making trial and evaluation laboratory (DEMATEL) threshold value can be quickly and reasonably determined in the process of combining DEMATEL and decomposed theory of planned behavior (DTPB) models. Models are combined to identify the key factors of a complex problem. This paper presents a case study of a food and beverage information system as an example. The analysis of the example indicates that, given direct and indirect relationships among variables, if a traditional DTPB model only simulates the effects of the variables without considering that the variables will affect the original cause-and-effect relationships among the variables, then the original DTPB model variables cannot represent a complete relationship. For the food and beverage example, a DEMATEL method was employed to reconstruct a DTPB model and, more importantly, to calculate reasonable DEMATEL threshold value for determining additional relationships of variables in the original DTPB model. This study is method-oriented, and the depth of investigation into any individual case is limited. Therefore, the methods proposed in various fields of study should ideally be used to identify deeper and more practical implications.
Department of Food and Beverage Management, Taipei College of Maritime Technology, No. 212, Sec. 9, Yanping N. Rd., Shilin Dist., Taipei City, 111 Taiwan, ROC.
Yi-Fang
YF
Hsieh
Graduate Institute of Technology Management, Chung Hua University, 707, Sec. 2, WuFu Rd., Hsinchu, 30012 Taiwan, ROC.
Yu-Cheng
YC
Lee
Department of Finance and Banking, Shih Chien University, No. 70, Dazhi St., Zhongshan Dist., Taipei City, 104 Taiwan, ROC.
Shao-Bin
SB
Lin
Decision-making trial and evaluation laboratory (DEMATEL); Decomposed theory of planned behavior model (DTPB model); Food and beverage information system; Fractional factorial design; Threshold value