Tuesday, 13:15 - 13:40 h, Room: H 1029

 

Martin Geiger
Multi-objective inventory routing: Reference-point-based search, representations, and neighborhoods

Coauthors: Thibaut Barthélemy, Marc Sevaux

 

Abstract:
The talk considers a multi-objective generalization of the inventory routing problem, a problem arising in transportation/the physical distribution of goods. In our problem formulation, inventory levels and routing costs are not combined into an overall evaluation function but treated separately. The problem is solved by the use of metaheuristics, and numerical results are computed and reported.\Particular emphasis has been laid on the representation of solutions from a practical point of view. In detail, individual frequency values are derived for each customer, implementing a recurring delivery policy. On the one hand, this leads to a relatively easy, understandable encoding of delivery policies. On the other hand however, the possibilities of the optimization approach are depending on the chosen representation, and interrelations with the chosen neighborhoods and search-/optimization-strategies become apparent.\Our findings show that there is great potential for tradeoffs between the two objectives. Especially in tactical planning situations, this problem extension can provide useful insights. A DSS making use of multiple reference points has thus been realized.

 

Talk 1 of the invited session Tue.2.H 1029
"Interactive multiobjective optimization" [...]
Cluster 15
"Multi-objective optimization" [...]

 

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