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A Quarterly Journal of Operations Research

4OR OnlineFirst articles

12.03.2021 | Research Paper Open Access

On the stochastic vehicle routing problem with time windows, correlated travel times, and time dependency

Most state-of-the-art algorithms for the Vehicle Routing Problem, such as Branch-and-Price algorithms or meta heuristics, rely on a fast feasibility test for a given route. We devise the first approach to approximately check feasibility in the …

23.02.2021 | Research Paper

Approximation issues of fractional knapsack with penalties: a note

Malaguti et al. introduce (Eur J Oper Res 273:874–888, 2019) the Fractional Knapsack Problem with Penalties, which is similar to the classical 0-1 Knapsack problem, except that each of the n variables associated with one of the n items can take …

10.02.2021 | PhD Thesis

Dealing with uncertainty in round robin sports scheduling

20.01.2021 | Research Paper

A dominance-based rough set approach applied to evaluate the credit risk of sovereign bonds

Even though sovereign bonds represent low-risk alternatives that give investors a healthy income, the risk assessment process for these bonds is still considered subjective because of the lack of criteria-related information and transparency of …

09.01.2021 | PhD Thesis

Sports timetabling: theoretical results and new insights in algorithm performance

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Über diese Zeitschrift

4OR is jointly published by the Belgian, French, and Italian Operations Research Societies. Published quarterly, the journal features high quality papers on the theory and application of operations research. Rapid dissemination of important results is a hallmark of the journal.

In addition to publishing original research findings, the journal publishes state-of-the-art surveys written by prominent researchers. The journal’s industry section features case studies as well as papers on operations research techniques in industry and on open industrial problems.

Educational papers help improve the quality of operations research teaching. The PhD section publishes selected abstracts of recent PhD theses defended in Belgian, French or Italian institutions, or of PhD theses defended by Belgian, French or Italian citizens.

Officially cited as: 4OR-Q J Oper Res

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