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Choice-based preference disaggregation concerning vehicle technologies

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Abstract

The preference disaggregation paradigm in multi-criteria decision analysis allows inferring a multicriteria preference model for decision makers from their holistic judgments. In the well-known additive value function framework, preference disaggregation methods infer parameters that define the value functions for the multiple criteria. The present work addresses the use of choice-based multiple questions, rather than eliciting a ranking or a classification of alternatives as typically done. It proposes simple mathematical formulations to obtain the most typical value-function shapes (concave, convex, or S-shaped) and a post-optimization step to avoid extreme cases. These methods are applied in an empirical study concerning the preferences of a population towards vehicle technologies. Over a hundred potential vehicle buyers in Portugal were interviewed in person. The analysis examines to what extent respondents are consistent, what do their value functions inferred from choice-based questions look like, and how well do these functions represent their preferences for alternative vehicle technologies. Respondents were found to be frequently inconsistent in their answers to choice-based questions. However, the inferred value functions reproduced their choices with a relatively small internal error. Requiring the value function to have a typical shape did not increase error in general. The post-optimization step contributes to decrease the difference among the criteria weights and matches better the preferences displayed by the respondents when performing an additional task based on a detailed elicitation process.

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Acknowledgements

The authors are grateful for the constructive and insightful comments from the reviewers. They also wish to express their gratitude and admiration to Rudolf Vetschera, for his extensive contributions to the field and the fruitful collaboration they have been enjoying.

Funding

This research is supported by the Portuguese Science and Technology Foundation (FCT) through Grant UIDB/05037/2020 and builds on work and data from project UID/MULTI/00308/2013 and Doctoral Grant SFRH/BD/51639/2011.

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Correspondence to Luis C. Dias.

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Appendix: Stated preferences questionnaire

Appendix: Stated preferences questionnaire

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Dias, L.C., Oliveira, G.D. & Sarabando, P. Choice-based preference disaggregation concerning vehicle technologies. Cent Eur J Oper Res 29, 177–200 (2021). https://doi.org/10.1007/s10100-020-00715-4

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  • DOI: https://doi.org/10.1007/s10100-020-00715-4

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