Browsing by Author "Artarslan, Sena"

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    Master ThesisPublicationMetadata only
    Multi-compartment inventory routing problem with flexible product types and fixed compartment sizes
    (2023) Artarslan, Sena; Ekici, Ali; Ekici, Ali; Özener, Okan Örsan; Yakıcı, E.; Department of Industrial Engineering; Artarslan, Sena
    This thesis introduces a \emph{Multi-Compartment Inventory Routing Problem} (MCIRP). The addressed problem aims to minimize the total traveling costs while ensuring customers are not out of stock with multiple products over the given planning time horizon. The distribution is made with a homogenous fleet of vehicles with flexible product types and fixed compartment sizes, where each compartment can accommodate all product types and has a fixed capacity. The supplier manages customer inventory levels by creating a distribution plan respecting the capacity restrictions of the compartments and customers. We examine the application of this problem with liquid products that can be partially delivered to customers with compartments that have debit meters. To address this complex problem, we propose a mathueristic method that combines Adaptive Large Neighborhood Search (ALNS) with mathematical models. The success of the solution method has been demonstrated by comparing it against a lower bound, that is flow formulation from the literature. Our results show that with the generated comprehensive and large-scale instances, our solution algorithm achieves only 18.13\% worse solutions than the conservative lower bound.