Γ-opt Research Group
Γ-opt Research Group
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Publications
Modelling decision-making and uncertainty
The Effect of Multi-Market Participation on Day-Ahead Trading of an Electricity Producer
The operating landscape for electricity producers has changed profoundly as new reserve markets have emerged and intraday trading …
Helmi Hankimaa
,
Fabricio Oliveira
,
Bruno Fanzeres
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A novel dual-decomposition method for non-convex two-stage stochastic mixed-integer quadratically constrained quadratic problems
We propose the novel p-branch-and-bound method for solving two-stage stochastic programming problems whose deterministic equivalents …
Nikita Belyak
,
Fabricio Oliveira
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Renewable energy expansion under taxes and subsidies: A transmission operator’s perspective
In light of increasing pressure to curb greenhouse gas emissions, many countries have focused on the development of strategies that …
Nikita Belyak
,
Steven A. Gabriel
,
Nikolay Khabarov
,
Fabricio Oliveira
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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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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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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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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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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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Robust Optimization for Scheduling and Lot-sizing of a Single Machine with Sequence-dependent Changeovers
A plethora of contributions have appeared in the literature over the past decade in the area of production planning of a single machine …
Hossein Mostafaei
,
Fabricio Oliveira
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