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Environmental Modelling with Reverse Combinatorial Auctions: CRAB Software Modification for Sensitivity Analysis

Abstract : This paper builds on reverse combinatorial auctions theory and its selected environmental applications, which were presented at ISESS 2013 and ISESS 2015. It provides an approach for calculating the sensitivity and proposals for necessary adjustments of CombinatoRial Auction Body Software System (CRAB), which makes its use for the relevant decision-making tasks more user friendly. Two possibilities are suggested. The first approach is appropriate for cases with relatively small numbers of subjects, where it is possible to compute all feasible solutions ordered by total cost. In such cases it is possible to analyse changes of coalition structures with increasing the cost. The second one suggests modification of the CRAB software, which would make it possible to analyse cases with high numbers of feasible coalition structures located between the optimal coalition (i.e. the cost-effective one) and the structure consisting of individual projects. This approach is appropriate for complex real applications involving setting of cost levels.
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Petr Fiala, Petr Šauer. Environmental Modelling with Reverse Combinatorial Auctions: CRAB Software Modification for Sensitivity Analysis. 12th International Symposium on Environmental Software Systems (ISESS), May 2017, Zadar, Croatia. pp.411-419, ⟨10.1007/978-3-319-89935-0_34⟩. ⟨hal-01852645⟩

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