Horizontal Collaboration in Transportation Logistics: Recent Developments

Aktivität: VorträgeVortragScience to Science

Beschreibung

Cost pressure and environmental considerations have incentivized firms to use their equipment more efficiently and to avoid idle capacities. This has led e.g. to the exchange of transportation requests between smaller carriers, when some face overload situations and others have idle resources. This talk will focus on Horizontal Collaboration in Transportation Logistics, where carriers at the same level of the supply chain exchange transportation requests. Carrier collaborations can be organized either in a centralized or in a decentralized form. The former case assumes that a fully informed coordinator redistributes the requests among carriers. This is often unrealistic, since firms are typically reluctant to reveal information about their customers. While centrally planned collaborations are commonly used for benchmarking, recent work is focusing on decentralized approaches, where collaboration partners do not have to share critical information. Decentralized systems need a smart mechanism design such that important properties can be reached. These include fair sharing of costs, in order to encourage players to maintain the collaboration and not to act strategically (incentive compatibility). Furthermore, budget-balance, efficiency, and group as well as individual rationality are seen important characteristics of valuable mechanisms. Unfortunately, all these desirable properties cannot be satisfied at the same time. The basic 5 steps of decentralized collaboration using collaborative auctions will be reviewed. Collaborative auctions are needed, since it is important to exchange bundles of requests instead of single requests, since the value of a bundle is often higher than the sum of the values of the individual requests. Furthermore, only assigning a single bundle to carriers guarantees feasibility of the redistributed assignment. While previous work has mainly focused on static collaboration problems, the ultimate goal is to solve dynamic collaboration problems, where there is a flow of customer requests coming in, and carriers have to decide on acceptance and rejection immediately. Then, at several points in time, combinatorial auctions or other exchange mechanisms are used to obtain a more efficient fulfillment of requests. In a first step, we look at a single day, where first customer request come in and have to be rejected or accepted. Then a single round of redistribution of requests is performed, and afterwards the requests are fulfilled. We investigate the possibility of overbooking. Also considered are variants with time windows where the benefit of collaboration can be different
Zeitraum30 Juni 2022
Ereignistitel8th meeting of the EURO Working Group on Vehicle Routing and Logistics Optimization (VeRoLog)
VeranstaltungstypKonferenz
OrtDeutschlandAuf Karte anzeigen
BekanntheitsgradInternational

Schlagwörter

  • MR