El treball del grup comprèn l'optimització numèrica, la modelització de problemes resolubles amb optimització, i l'aplicació de tècniques adients a problemes de l'enginyeria, la indústria, la logística i les tecnologies de la informació. L'optimització numèrica inclou l'estudi de les propietats del problemes estudiats, l'anàlisi de nous algorismes d'optimització (lineal, no lineal, contínua, entera i combinatòria), el desenvolupament de procediments numèrics per a la seva implementació computacional eficient i la comparació amb algorismes previs, si existeixen. La part de modelització implica la cerca de formulacions escaients que permetin la resolució de problemes reals, sovint de gran dimensió. Els problemes reals en que el grup està treballant actualment són: protecció i privacitat de dades estadístiques; i generació òptima d'electricitat en un entorn multimercat.

http://futur.upc.edu/GNOM

The group works on both the numerical optimisation and the modelling of problems that can be solved through optimisation. Its work on numerical optimisation includes the analysis of new optimisation algorithms (linear, nonlinear, continuous and integer) and their convergence, the development of numerical procedures for their efficient computational implementation, and the comparison to existing algorithms. The work on modelling focuses on the solution of real problems, which are often large-scale, by finding an equivalentmathematical formulation leading to an optimisation problem, and applying a suitable solver, that has either been specially developed or is commercially available. The modelling languages that are available are used.

http://futur.upc.edu/GNOM

Recent Submissions

  • Numerical implementation and computational results of nonlinear network optimization with linear side constraints 

    Heredia, F.-Javier (Francisco Javier); Nabona Francisco, Narcís (Springer, 1991)
    Conference report
    Open Access
  • Optimal location of fast charging stations in Barcelona: a flow-capturing approach 

    Cruz Zambrano, Miguel; Corchero García, Cristina; Igualada González, Lucía; Bernardo, Valeria (Institute of Electrical and Electronics Engineers (IEEE), 2013)
    Conference report
    Open Access
    The aim of this paper is to find the optimal location of electric vehicle (EV) fast charging stations by means of two methodologies: a classical flow-capturing optimization model involving only mobility needs, and ...
  • A stochastic programming model for the tertiary control of microgrids 

    Citores, Leire; Corchero García, Cristina; Heredia, F.-Javier (Francisco Javier) (Institute of Electrical and Electronics Engineers (IEEE), 2015)
    Conference report
    Restricted access - publisher's policy
    In this work a scenario-based two-stage stochastic programming model is proposed to solve a microgrid’s tertiary control optimization problem taking into account some renewable energy resource’s uncertainty as well as ...
  • Potential externalities savings due to electric vehicle smart charge 

    Benveniste Pérez, Gabriela; Corchero García, Cristina; Cruz Zambrano, Miguel (2015)
    Conference report
    Open Access
    This work focuses on the analysis developed in order to demonstrate how smart charging, using tailored control algorithms, contributes to minimize the environmental impact and economic costs associated to the electric ...
  • European electric vehicle fleet: driving and charging behaviors 

    Corchero García, Cristina (2015)
    Conference report
    Open Access
    The electrification of vehicles would be a reality in the coming decades. Statistical results on real electric vehicle usage data is a key point in the development of the electro mobility. A large collection of electric ...
  • A mathematical programming approach for different scenarios of bilateral bartering 

    Nasini, Stefano; Castro Pérez, Jordi; Fonseca Casas, Pau (Institut d'Estadística de Catalunya, 2015-01-01)
    Article
    Open Access
    The analysis of markets with indivisible goods and fixed exogenous prices has played an important role in economic models, especially in relation to wage rigidity and unemployment. This paper provides a novel mathematical ...
  • Importancia de la potencia y la hipótesis en el valor p 

    Cortés Martínez, Jordi; Casals, Martí; Langohr, Klaus; González Alastrué, José Antonio (Elsevier, 2015-12-09)
    Article
    Restricted access - publisher's policy
    Los lectores de Medicina Clínica conocen bien la importancia de definir bien el denominador de una proporción para estimar una probabilidad: “No es lo mismo la probabilidad de que un católico sea Papa que la de que un Papa ...
  • Scheduling policies for multi-period services 

    Núñez del Toro, Alma Cristina; Fernández Aréizaga, Elena; Kalcsics, Jörg; Nickel, Stefan (Elsevier, 2015-02-12)
    Article
    Restricted access - publisher's policy
    This paper discusses a multi-period service scheduling problem. In this problem, a set of customers is given who periodically require service over a finite time horizon. To satisfy the service demands, a set of operators ...
  • On geometrical properties of preconditioners in IPMs for classes of block-angular problems 

    Castro Pérez, Jordi; Nasini, Stefano (2016-02)
    External research report
    Open Access
    One of the most efficient interior-point methods for some classes of block-angular structured problems solves the normal equations by a combination of Cholesky factorizations and preconditioned conjugate gradient ...
  • Hybrid AC-DC offshore wind power plant topology: optimal design 

    Prada Gil, Mikel de; Igualada González, Lucía; Corchero García, Cristina; Gomis Bellmunt, Oriol; Sumper, Andreas (2015-07-01)
    Article
    Open Access
    The aim of this paper is to present a hybrid AC-DC offshore wind power plant (OWPP) topology and to optimize its design in order to minimize the OWPP's total cost. This hybrid concept is based on clustering wind turbines ...

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