Abstract
The objective of this chapter is to describe an interactive procedure for the assessment of value functions with imprecise information and through the integration of decomposed and holistic scaling. The procedure has general applicability, but it is tailored to the needs of environmental problems, and it is suitable for the representation of a single-expert value function model.
“Experts do not know, either, but on a higher level”, Journal of irreproducible results: insights and observation, Vol. 39(2), 1994.
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This model has been implemented in the software package “EValue” (Beinat et al.., 1994c). Details of the procedure can be found in Beinat and Janssen (1994), Beinat et al. (1994a, 1994b) and Beinat et al (1993).
The subscript “bp” in the tridimensional profiles is dropped to simplify the notation.
It is important to stress the relevance of taking into account the ranges explicitly. In a different test session, the same expert was asked to compare the weights of cadmium and zinc without mentioning the ranges explicitly. Since cadmium is a very toxic substance, in normal situations the expert considered cadmium far more dangerous than zinc, and thus he attached a higher weight to cadmium. However, the setting of the assessment was such that the score range of zinc was rather large compared with that of cadmium. By assessing swing weights, the expert expressed a higher swing weight for zinc, reversing the initial judgement. Weber and Borkeding (1993) offer some behavioural explanation of this phenomenon.
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© 1997 Springer Science+Business Media Dordrecht
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Beinat, E. (1997). An interactive procedure for assessing value functions for expert judgement. In: Value Functions for Environmental Management. Environment & Management, vol 7. Springer, Dordrecht. https://doi.org/10.1007/978-94-015-8885-0_5
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DOI: https://doi.org/10.1007/978-94-015-8885-0_5
Publisher Name: Springer, Dordrecht
Print ISBN: 978-90-481-4882-0
Online ISBN: 978-94-015-8885-0
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