Γ-opt Research Group
Γ-opt Research Group
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Predicer: abstract stochastic optimisation model framework for multi-market operation
An open-source modelling framework Predicer, standing for Predictive Decider, for multi-market day-ahead market operation purposes is …
Esa Pursiheimo
,
Dennis Sundell
,
Juha Kiviluoma
,
Helmi Hankimaa
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DOI
Supporting platelet inventory management decisions: What is the effect of extending platelets’ shelf life?
Managing blood product inventories can be challenging due to stochastic supply and demand, varying shelf lives of the products, and the …
Mary Dillon
,
Ilmari Vauhkonen
,
Mikko Arvas
,
Jarkko Ihalainen
,
Eeva Vilkkumaa
,
Fabricio Oliveira
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DOI
Achieving Emission-Reduction Goals: Multi-Period Power-System Expansion under Short-Term Operational Uncertainty
Stochastic adaptive robust optimization is capable of handling short-term uncertainties in demand and variable renewable-energy sources …
Tuomas Rintamäki
,
Fabricio Oliveira
,
Afzal S. Siddiqui
,
Ahti Salo
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A data-driven optimization model for the workover rig scheduling problem: Case study in an oil company
After completion, oil wells often require intervention services to increase productivity, correct oil flow losses, and solve mechanical …
Iuri Santos
,
Silvio Hamacher
,
Fabricio Oliveira
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DOI
Decision programming for mixed-integer multi-stage optimization under uncertainty
Influence diagrams are widely employed to represent multi-stage decision problems in which each decision is a choice from a discrete …
Ahti Salo
,
Juho Andelmin
,
Fabricio Oliveira
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The p-Lagrangian relaxation for separable nonconvex MIQCQP problems
This paper presents a novel technique to compute Lagrangian bounds for nonconvex mixed-integer quadratically constrained quadratic …
Tiago Andrade
,
Nikita Belyak
,
Andrew Eberhard
,
Silvio Hamacher
,
Fabricio Oliveira
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A Systematic Literature review for the rig scheduling problem: Classification and state-of-the-art
Rigs are critical capital-intensive resources for oil and gas exploration and production operations, such as drilling, completion, and …
Iuri Santos
,
Silvio Hamacher
,
Fabricio Oliveira
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A two stage stochastic programming for asset protection routing and a solution algorithm based on the Progressive Hedging algorithm
In this paper, a two-stage stochastic programming model is developed for the asset protection routing problem (APRP) to be employed in …
Mahdi Bashiri
,
Erfaneh Nikzad
,
Andrew Eberhard
,
John Hearne
,
Fabricio Oliveira
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DOI
Efficient formulation for transportation scheduling of single refinery multiproduct pipelines
Multiproduct pipeline transportation scheduling is a complex operations research problem that is characterized by the movement of the …
Hossein Mostafaei
,
Pedro M. Castro
,
Fabricio Oliveira
,
Iiro Harjunkoski
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Sustainable sugarcane-to-bioethanol supply chain network design: A robust possibilistic programming model
Issues such as high fossil-fuel price fluctuations, considerable air pollution, and the realization that fossil sources are not …
Hani Gilani
,
Hadi Sahebi
,
Fabricio Oliveira
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