All Outputs (43)

A risk management system for sustainable fleet replacement. (2014)
Journal Article
ANSARIPOOR, A.H., OLIVEIRA, F.S. and LIRET, A. 2014. A risk management system for sustainable fleet replacement. European journal of operational research [online], 237(2), pages 701-712. Available from: https://doi.org/10.1016/j.ejor.2014.02.006

This article analyzes the fleet management problem faced by a firm when deciding which vehicles to add to its fleet. Such a decision depends not only on the expected mileage and tasks to be assigned to the vehicle but also on the evolution of fuel an... Read More about A risk management system for sustainable fleet replacement..

The asset replacement problem state of the art. (2013)
Book Chapter
ANSARIPOOR, A.H., OLIVEIRA, F.S. and LIRET, A. 2013. The asset replacement problem state of the art. In Owusu, G., O'Brien, P., McCall, J. and Doherty, N.F. (eds.) Transforming field and service operations: methodologies for successful technology-driven business transformation. Berlin: Springer [online], chapter 14, pages 213-233. Available from: https://doi.org/10.1007/978-3-642-44970-3_14

This book chapter outlines the different modelling approaches for realising sustainable operations of asset replacement and studying the impact of the economic life, the repair-cost limit and comprehensive cost minimisation models. In particular it a... Read More about The asset replacement problem state of the art..

Real-time dynamic pricing in a non-stationary environment using model-free reinforcement learning. (2013)
Journal Article
RANA, R. and OLIVEIRA, F.S. 2014. Real-time dynamic pricing in a non-stationary environment using model-free reinforcement learning. Omega [online], 47, pages 116-126. Available from: https://doi.org/10.1016/j.omega.2013.10.004

This paper examines the problem of establishing a pricing policy that maximizes the revenue for selling a given inventory by a fixed deadline. This problem is faced by a variety of industries, including airlines, hotels and fashion. Reinforcement lea... Read More about Real-time dynamic pricing in a non-stationary environment using model-free reinforcement learning..

Pricing option contracts on the strategic petroleum reserve. (2013)
Journal Article
MURPHY, F. and OLIVEIRA, F.S. 2013. Pricing option contracts on the strategic petroleum reserve. Energy economics [online], 40, pages 242-250. Available from: https://doi.org/10.1016/j.eneco.2013.06.016

In this article we examine the pricing of option contracts on the strategic petroleum reserve (SPR) and consider how these can be used by both the government and refiners. We analyze the interaction between the call and put option contracts, taking i... Read More about Pricing option contracts on the strategic petroleum reserve..

Contract design and supply chain coordination in the electricity industry. (2013)
Journal Article
OLIVEIRA, F.S., RUIZ, C. and CONEJO, A.J. 2013. Contract design and supply chain coordination in the electricity industry. European journal of operational research [online], 227(3), pages 527-537. Available from: https://doi.org/10.1016/j.ejor.2013.01.003

In this article we propose a model of the supply chain in electricity markets with multiple generators and retailers and considering several market structures. We analyze how market design interacts with the different types of contract and market str... Read More about Contract design and supply chain coordination in the electricity industry..

Robust trading in spot and forward oligopolistic markets. (2012)
Journal Article
GÜLPıNAR, N. and OLIVEIRA, F.S. 2012. Robust trading in spot and forward oligopolistic markets. International journal of production economics [online], 138(1), pages 35-45. Available from: https://doi.org/10.1016/j.ijpe.2011.12.005

In this article we consider the interaction between forward and spot prices and analyze trading in oligopolistic markets under uncertainty. We extend the two-stage risk-neutral stochastic model to worst-case analysis with rival demand scenarios. At t... Read More about Robust trading in spot and forward oligopolistic markets..

Developing a market-based approach to managing the US strategic petroleum reserve. (2010)
Journal Article
MURPHY, F. and OLIVEIRA, F.S. 2010. Developing a market-based approach to managing the US strategic petroleum reserve. European journal of operational research [online], 206(2), pages 488-495. Available from: https://doi.org/10.1016/j.ejor.2010.02.030

The Strategic Petroleum Reserve has not been used effectively to manage the consequences of oil shocks in the United States. The main reason is that political decision makers tend to hoard the reserves during crises and bureaucratic processes delay t... Read More about Developing a market-based approach to managing the US strategic petroleum reserve..

Limitations of learning in automata-based systems. (2010)
Journal Article
OLIVEIRA, F.S. 2010. Limitations of learning in automata-based systems. European journal of operational research [online], 203(3), pages 684-691. Available from: https://doi.org/10.1016/j.ejor.2009.08.018

In this article, we aim to analyze the limitations of learning in automata-based systems by introducing the L+ algorithm to replicate quasi-perfect learning, i.e., a situation in which the learner can get the correct answer to any of his queries. Thi... Read More about Limitations of learning in automata-based systems..

Social welfare analysis of the Iberian electricity market accounting for carbon emission prices. (2010)
Journal Article
MOREIRA, A., OLIVEIRA, F.S. and PEREIRA, J. 2010. Social welfare analysis of the Iberian electricity market accounting for carbon emission prices. IET generation, transmission and distribution [online], 4(2), pages 231-243. Available from: https://doi.org/10.1049/iet-gtd.2009.0105

In this study, the authors analyse the social welfare impact of the integration of Portugal and Spain in the Iberian electricity market (MIBEL), taking into account the CO2 price for emissions trading. They model the impact of emissions trading on th... Read More about Social welfare analysis of the Iberian electricity market accounting for carbon emission prices..

Analysing the effect of demand uncertainty in dynamic pricing with EAs. (2009)
Presentation / Conference Contribution
SHAKYA, S., OLIVEIRA, F. and OWUSU, G. 2009. Analysing the effect of demand uncertainty in dynamic pricing with EAs. In Bramer, M., Petridis, M. and Coenen, F. (eds.) Research and development in intelligent systems XXV: proceedings of the 28th British Computer Society's Specialist Group on Artificial Intelligence (SGAI) international conference on innovative techniques and applications of artificial intelligence (AI-2008), 9-11 December 2008, Cambridge, UK. London: Springer [online], pages 77-90. Available from: https://doi.org/10.1007/978-1-84882-171-2_6

Dynamic pricing is a pricing strategy where a firm adjust the price for their products and services as a function of its perceived demand at different times. In this paper, we show how Evolutionary algorithms (EA) can be used to analyse the effect of... Read More about Analysing the effect of demand uncertainty in dynamic pricing with EAs..

Modeling emotions and reason in agent-based systems. (2009)
Journal Article
OLIVEIRA, F.S. 2010. Modeling emotions and reason in agent-based systems. Computational economics [online], 35(2), pages 155-164. Available from: https://doi.org/10.1007/s10614-009-9188-0

We analyze how to develop an agent-based system in which agents evolve co-evolutionary endogenous rules of behavior by using best response and emotions. We show that best response is not sufficient to define complete and consistent rules of behavior... Read More about Modeling emotions and reason in agent-based systems..

Analysing industry profitability: a "complexity as cause" perspective. (2009)
Journal Article
CALDART, A.A. and OLIVEIRA, F. 2010. Analysing industry profitability: a "complexity as cause" perspective. European management journal [online], 28(2), pages 95-107. Available from: https://doi.org/10.1016/j.emj.2009.04.004

We investigate how the competitive complexity of an industrial sector affects its profitability. For that purpose, we developed a set of simulations representing industries as complex systems where different firms co-evolve linked by multiple competi... Read More about Analysing industry profitability: a "complexity as cause" perspective..

Bottom-up design of strategic options as finite automata. (2008)
Journal Article
OLIVEIRA, F.S. 2010. Bottom-up design of strategic options as finite automata. Computational management science [online], 7(4), pages 355-375. Available from: https://doi.org/10.1007/s10287-008-0084-1

In this paper we look at the problem of strategic decision making. We start by presenting a new formalisation of strategic options as finite automata. Then, we show that these finite automata can be used to develop complex models of interacting optio... Read More about Bottom-up design of strategic options as finite automata..

Modeling the impact of market interventions on the strategic evolution of electricity markets. (2008)
Journal Article
BUNN, D.W. and OLIVEIRA, F.S. 2008. Modeling the impact of market interventions on the strategic evolution of electricity markets. Operations research [online], 56(5), pages 1116-1130. Available from: https://doi.org/10.1287/opre.1080.0565

This paper presents a large-scale computationally intensive model for understanding the dynamic strategic evolution of electricity-generating asset portfolios in response to various market interventions, and the consequent longer-term effects of such... Read More about Modeling the impact of market interventions on the strategic evolution of electricity markets..

The value of information in electricity investment games. (2008)
Journal Article
OLIVEIRA, F. 2008. The value of information in electricity investment games. Energy policy [online], 36(7), pages 2364-2375. Available from: https://doi.org/10.1016/j.enpol.2008.01.005

In this paper we look at the assumptions behind a Cournot model of investment in electricity markets. We analyze how information influences investment, looking at the way common knowledge of marginal costs, expectations on the competitors' marginal c... Read More about The value of information in electricity investment games..

A constraint logic programming algorithm for modeling dynamic pricing. (2008)
Journal Article
OLIVEIRA, F.S. 2008. A constraint logic programming algorithm for modeling dynamic pricing. INFORMS journal on computing [online], 20(1), pages 69-77. Available from: https://doi.org/10.1287/ijoc.1060.0218

We extend Lemke's algorithm to solve a dynamic pricing problem. We identify an instance in which Lemke's algorithm fails to converge to an optimal solution (when an optimum does exist) and propose a constraint logic programming solution to this probl... Read More about A constraint logic programming algorithm for modeling dynamic pricing..

Business to business online revenue management. (2007)
Book Chapter
OLIVEIRA, F. and RANA, R. 2008. Business to business online revenue management. In Voudouris, C., Owusu, G., Dorne, R. and Lesaint, D. (eds.) Service chain management: technology innovation for the service business. Berlin: Springer [online], chapter 17, pages 239-250. Available from: https://doi.org/10.1007/978-3-540-75504-3_17

With the emergence of the Internet, electronic commerce (e-commerce), revenue management and especially applications that combine both are becoming increasingly an area of innovation for service industries. E-commerce has introduced efficiencies acro... Read More about Business to business online revenue management..

Agent-based analysis of technological diversification and specialization in electricity markets. (2007)
Journal Article
BUNN, D.W. and OLIVEIRA, F.S. 2007. Agent-based analysis of technological diversification and specialization in electricity markets. European journal of operational research [online], 181(3), pages 1265-1278. Available from: https://doi.org/10.1016/j.ejor.2005.11.056

This paper develops a model-based analysis of technological market structure evolution in electricity markets. This is done through the development of a power plant trading game that, via computational learning, simulates how players coordinate their... Read More about Agent-based analysis of technological diversification and specialization in electricity markets..

An application of EDA and GA to dynamic pricing. (2007)
Presentation / Conference Contribution
SHAKYA, S., OLIVEIRA, F. and OWUSU, G. 2007. An application of EDA and GA to dynamic pricing. In Proceedings of the 9th Annual conference on genetic and evolutionary computation (GECCO '07), 7-11 July 2007, London, UK. New York: ACM [online], pages 585-592. Available from: https://doi.org/10.1145/1276958.1277078

E-commerce has transformed the way firms develop their pricing strategies, producing shift away from fixed pricing to dynamic pricing. In this paper, we use two different Estimation of distribution algorithms (EDAs), a Genetic Algorithm (GA) and a Si... Read More about An application of EDA and GA to dynamic pricing..

The impact of organisational complexity in the strategy development process. (2007)
Book Chapter
CALDART, A.A. and OLIVEIRA, F.S. 2007. The impact of organisational complexity in the strategy development process. In Dyson, R.G. and O'Brien, F.A. (eds.) Supporting strategy: frameworks, methods and models. Chichester, Wiley, chapter 8, pages 191-210.

In the first chapter of this book, it was stated that there is a set of characteristics that lead towards a decision being labelled as a strategic one. One of these characteristics is the complexity and inter-relatedness of the organisational context... Read More about The impact of organisational complexity in the strategy development process..