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OR Spectrum OnlineFirst articles

Open Access 23.03.2023 | Original Article

Outlier detection in network revenue management

This paper presents an automated approach for providing ranked lists of outliers in observed demand to support analysts in network revenue management. Such network revenue management, e.g. for railway itineraries, needs accurate demand forecasts.

verfasst von:
Nicola Rennie, Catherine Cleophas, Adam M. Sykulski, Florian Dost

Open Access 02.03.2023 | Original Article

Multitrip vehicle routing with delivery options: a data-driven application to the parcel industry

To make the last mile of parcel delivery more efficient, service providers offer an increasing number of modes of delivery as alternatives to the traditional and often cost-intensive home delivery service. Parcel lockers and pickup stations can be …

verfasst von:
Lukas Janinhoff, Robert Klein, Daniel Scholz

24.02.2023 | Original Article

Dynamic hedging for the real option management of hydropower production with exchange rate risks

We study the risk management problem of a hydropower producer that hedges risk by trading currency and power futures contracts. The model considers three types of risks: operational risk due to supply uncertainty, profit risk due to power price …

verfasst von:
Joakim Dimoski, Stein-Erik Fleten, Nils Löhndorf, Sveinung Nersten

Open Access 24.02.2023 | Original Article

Sequential claim games

We consider the estate division or bankruptcy problem and assume that players sequentially put claims on the estate. Each part of the estate is then divided proportionally with respect to the number of claims on it. We focus on myopic play: …

verfasst von:
Qianqian Kong, Hans Peters

14.02.2023 | Acknowledgements

Acknowledgement to reviewers

04.02.2023 | Original Article

Pricing, coalition stability, and profit allocation in the pull assembly supply chains under competition

We consider a pull assembly supply chain consisting of an assembler and its multiple upstream component suppliers/subsidiaries, in which the former buys complementary components from these upstream component suppliers, assembles them into a final …

verfasst von:
Changwen Li, Bin Cao, Yong-Wu Zhou, T. C. Edwin Cheng

Open Access 23.01.2023 | Original Article

Two-stage stochastic formulation for relief operations with multiple agencies in simultaneous disasters

The increasing damage caused by disasters is a major challenge for disaster management authorities, especially in instances where simultaneous disasters affect different geographical areas. The uncertainty and chaotic conditions caused by these …

verfasst von:
Oscar Rodríguez-Espíndola

17.01.2023 | Original Article

An alternative approach to address uncertainty in hub location

In this paper, optimization and simulation techniques are integrated to address single and multiple allocation hub network design problems under uncertainty. Using a scenario-based iterative optimization–simulation approach, four sources of …

verfasst von:
Marc Janschekowitz, Gita Taherkhani, Sibel A. Alumur, Stefan Nickel

10.01.2023 | Original Article

The blocks relocation problem with item families minimizing the number of reshuffles

In this paper, we consider the process of unloading items from a storage (e.g., a warehouse, depot, etc.). The items are stored in stacks where only the topmost item of each stack can be directly accessed. Each item belongs to a certain family …

verfasst von:
Sven Boge, Sigrid Knust

Open Access 09.01.2023 | Original Article

The parcel hub scheduling problem with limited conveyor capacity and controllable unloading speeds

We investigate a specific truck scheduling problem at cross-docks in the postal service industry on an operational level aiming to maximise the number of duly parcels assuming fixed departure times of the outbound trucks. The inbound gates and the …

verfasst von:
Stefan Bugow, Carolin Kellenbrink

03.01.2023 | Original Article

Patient diversion using real-time delay predictions across healthcare facility networks

This work demonstrates how real-time delay prediction can be used to determine patient diversion across a healthcare facility network. This work presents diversion mechanisms based on real-time predictions of delays at the facilities from which …

verfasst von:
Najiya Fatma, Varun Ramamohan

20.12.2022 | Original Article

Identifying the closest most productive scale size unit in data envelopment analysis

Finding the closest most productive scale size (MPSS) unit is an important issue in the data envelopment analysis (DEA) literature. The closest MPSS unit to the decision-making unit (DMU) under evaluation may be one of the existing (actually) …

verfasst von:
Eshagh Esfandiar, Robabeh Eslami, Mohammad Khoveyni, Alireza Gilani

19.12.2022 | Original Article

Sourcing decisions with loss aversion under yield and demand randomness

Yield and demand randomness are common in the industry, and loss aversion has been regarded as an inherent behavior for decision-makers. We combine these two factors and investigate a retailer’s ordering decisions under both yield and demand …

verfasst von:
Qingwei Wang, Meimei Zheng, Wei Weng

06.12.2022 | Original Article

The role of demand response in mitigating market power: a quantitative analysis using a stochastic market equilibrium model

Market power is a dominant feature of many modern electricity markets with an oligopolistic structure, resulting in increased consumer cost. This work investigates how consumers, through demand response (DR), can mitigate against market power.

verfasst von:
Mel T. Devine, Valentin Bertsch

Open Access 29.10.2022 | Original Article

Estimating market power under a nonparametric analysis: evidence from the Chinese real estate sector

The traditional Lerner index is limited in its capacity to estimate the level of competition in the economic sector from the perspective that it mainly focuses on the overall level of market power for each individual decision-making unit.

verfasst von:
Hirofumi Fukuyama, Yong Tan

Open Access 11.09.2022 | Original Article

Relevance of dynamic variables in multicategory choice models

We investigate the relevance of dynamic variables that reflect the purchase history of a household as independent variables in multicategory choice models. To this end, we estimate both homogeneous and finite mixture variants of the multivariate …

verfasst von:
Harald Hruschka

Open Access 28.06.2022 | Original Article

Live shopping promotions: which categories should a retailer discount to shoppers already in the store?

Digitalization allows retailers to target customers with personalized promotions when they enter the store. Although traditional promotional retailer objectives, such as store visit, become obsolete once the shopper is already in the store …

verfasst von:
Julia Wamsler, Denis Vuckovac, Martin Natter, Alexander Ilic

09.03.2022 | Original Article

Competition and market dynamics in duopoly: the effect of switching costs

A dynamic game framework is developed to study market dynamics between two manufacturers/service providers competing on pricing and switching costs. In this game, a portion of consumers may choose to upgrade their products by repurchasing from one …

verfasst von:
Yang Yang, Cheng-Hung Wu