Annelies De Corte

Technical consultant at KPMG

Contact
Room: CST - B.510
Tel: +32 32654133
Email: annelies.decorte@uantwerpen.be

Research
PhD: The optimization of water distribution networks using metaheuristics. 

A safe, adequate and accessible supply of drinking water is one of the basic necessities of any human being. The most efficient and effective way to transport drinking water is through a network of pipelines.
​Therefore​,​ the​ water distribution network is one of the most vital​ elements of ​a society'​s infrastructure​, providing ​people ​with high-quality drinking water in sufficient quantities and at an adequate pressure. The (re)construction of these networks requires major investments. Hence, an efficient network design is of crucial importance.
Optimally designing a water distribution network consists of finding the optimal diameter for every pipe in the network, such that the total network cost is minimized and all pressure and velocity constraints are ​satisfied. Traditionally, such design decisions are made on ​the basis of ​expert experience. When networks increase in size, however, rules of thumb will​ rarely​ lead to optimal decisions. For a small network of 200 pipes and 14 possible diameters, e.g., ​the number of possible solutions is roughly equal to the amount of chocolate m&ms that could fit into the sun. Finding the optimal solution is equivalent to finding the one peanut m&m hidden inside.
Optimization algorithms can support ​a decision maker by improving the efficiency and effectiveness of the design decisions. Over the past thirty years, a large number of techniques have been developed to tackle the problem of optimally designing a water distribution network. This PhD thesis provides a critical overview of the current state of the art, and offers some points of improvement.  Another contribution of this PhD thesis is HydroGen, a tool that is developed to generate virtual water distribution networks for algorithm testing purposes. Moreover, two iterated local search algorithms are developed to tackle the basic version of the problem and an extended version of the problem that takes into consideration multi-period water demand patterns and imposes an additional velocity constraint.

 

List of publications

  • A. De Corte and K. Sörensen, "An iterated local search algorithm for water distribution network design optimization," Networks, vol. to appear, 2016.
    [DOI] [Bibtex]
    @article{decorte2016iterated,
    title = {An iterated local search algorithm for water distribution network design optimization},
    journal = {Networks},
    volume = {to appear},
    number = {},
    pages = {},
    year = {2016},
    doi = {10.1002/net.21673},
    author = {De Corte, Annelies and Sörensen, Kenneth},
    keywords = {utility distribution networks},
    }
  • A. De Corte and K. Sörensen, "Hydrogen: an artificial water distribution network generator," Water resources management, vol. 28, iss. 2, pp. 333-350, 2014.
    [PDF] [DOI] [Bibtex]
    @article{decorte2014hydrogen,
    title = {HydroGen: an artificial water distribution network generator},
    author = {De Corte, Annelies and Sörensen, Kenneth},
    journal = {Water resources management},
    volume = {28},
    number = {2},
    pages = {333--350},
    year = {2014},
    publisher = {Springer},
    doi = {10.1007/s11269-013-0485-y},
    keywords = {utility distribution networks},
    }
  • A. De Corte and K. Sörensen, "Optimisation of gravity-fed water distribution network design: a critical review," European journal of operational research, vol. 228, iss. 1, pp. 1-10, 2013.
    [PDF] [DOI] [Bibtex]
    @article{decorte2013optimisation,
    title = {Optimisation of gravity-fed water distribution network design: A critical review},
    author = {De Corte, Annelies and Sörensen, Kenneth},
    journal = {European Journal of Operational Research},
    volume = {228},
    number = {1},
    pages = {1--10},
    year = {2013},
    publisher = {Elsevier},
    doi = {10.1016/j.ejor.2012.11.046},
    keywords = {utility distribution networks},
    }

List of presentations

  • A. De Corte and K. Sörensen, "Parameter tuning of ils for water distribution network design optimisation," in EURO2015: european conference on operational research, Glasgow, UK, 2015.
    [Bibtex]
    @inproceedings{decorte2015parameter_pres,
    author = {De Corte, Annelies and Sörensen, Kenneth},
    title = {Parameter tuning of ILS for water distribution network design optimisation},
    booktitle = {{EURO2015}: European Conference on Operational Research},
    year = {2015},
    address = {Glasgow, UK},
    keywords = {utility distribution networks},
    }
  • A. De Corte and K. Sörensen, "An iterated local search algorithm for water distribution network design optimisation," in 11\textsuperscriptth metaheuristics international conference, Agadir, Morocco, 2015.
    [Bibtex]
    @inproceedings{decorte2015aniterated_pres,
    author = {De Corte, Annelies and Sörensen, Kenneth},
    title = {An iterated local search algorithm for water distribution network design optimisation},
    booktitle = {11\textsuperscript{th} Metaheuristics International Conference},
    year = {2015},
    address = {Agadir, Morocco},
    keywords = {utility distribution networks},
    }
  • A. De Corte and K. Sörensen, "ILS for dynamic water distribution network design optimisation," in CORS/INFORMS international conference, Montreal, Canada, 2015.
    [Bibtex]
    @inproceedings{decorte2015ils_pres,
    author = {De Corte, Annelies and Sörensen, Kenneth},
    title = {{ILS} for dynamic water distribution network design optimisation},
    booktitle = {{CORS/INFORMS} International Conference},
    year = {2015},
    address = {Montreal, Canada},
    keywords = {utility distribution networks},
    }
  • A. De Corte and K. Sörensen, "Iterated local search for water distribution network design optimisation," in 29\textsuperscriptth annual conference of the belgian operations research society, Antwerp, Belgium, 2015.
    [Bibtex]
    @inproceedings{decorte2015ils_pres,
    author = {De Corte, Annelies and Sörensen, Kenneth},
    title = {Iterated local search for water distribution network design optimisation},
    booktitle = {29\textsuperscript{th} Annual Conference of the Belgian Operations Research Society},
    year = {2015},
    address = {Antwerp, Belgium},
    keywords = {utility distribution networks},
    }
  • A. De Corte and K. Sörensen, "An iterated local search technique for water distribution network design optimisation," in ORBEL28: 28th annual conference of the belgian operations research society, Mons, Belgium, 2014.
    [PDF] [Bibtex]
    @inproceedings{decorte2014iterated_pres,
    author = {De Corte, Annelies and Sörensen, Kenneth},
    title = {An iterated local search technique for water distribution network design optimisation},
    booktitle = {{ORBEL28}: 28th Annual Conference of the Belgian Operations Research Society},
    year = {2014},
    address = {Mons, Belgium},
    keywords = {utility distribution networks},
    }
  • A. De Corte and K. Sörensen, "Water distribution network optimisation using HydroGen instances," in Urban water, Alvor, Portugal, 2014.
    [PDF] [Bibtex]
    @inproceedings{decorte2014water_pres,
    author = {De Corte, Annelies and Sörensen, Kenneth},
    title = {Water distribution network optimisation using {HydroGen} instances},
    booktitle = {Urban Water},
    year = {2014},
    address = {Alvor, Portugal},
    keywords = {utility distribution networks},
    }
  • A. De Corte and K. Sörensen, "Algorithmic generation of water distribution networks," in ORBEL27: 27th annual conference of the belgian operations research society, Kortrijk, Belgium, 2013.
    [PDF] [Bibtex]
    @inproceedings{decorte2013algorithmic_pres,
    author = {De Corte, Annelies and Sörensen, Kenneth},
    title = {Algorithmic generation of water distribution networks},
    booktitle = {{ORBEL27}: 27th Annual Conference of the Belgian Operations Research Society},
    year = {2013},
    address = {Kortrijk, Belgium},
    keywords = {utility distribution networks},
    }
  • A. De Corte and K. Sörensen, "The optimization of water distribution networks: a critical review," in EU/MEeting 2012, Copenhagen, Denmark, 2012.
    [PDF] [Bibtex]
    @inproceedings{decorte2012optimization_pres,
    author = {De Corte, Annelies and Sörensen, Kenneth},
    title = {The optimization of water distribution networks: a critical review},
    booktitle = {{EU/MEeting} 2012},
    year = {2012},
    address = {Copenhagen, Denmark},
    keywords = {utility distribution networks},
    }

HydroGen networks and Iterated local search code

HydroGen water distribution test networks and the iterated local search code for water distribution network design optimization can be found here. Take a look!