A multi-directional modified Physarum algorithm for optimal multi-objective discrete decision making

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This paper will address an innovative bio-inspired algorithm able to incrementally grow decision graphs in multiple directions for discrete
multi-objective optimisation. The algorithm takes inspiration from
the slime mould Physarum Polycephalum, an amoeboid organism that
in its plasmodium state extends and optimizes a net of veins looking
for food. The algorithm is here used to solve multi-objective Traveling
Salesman and Vehicle Routing Problems selected as representative examples
of multi-objective discrete decision making problems. Simulations on selected test cases showed that building decision sequences in two directions and adding a matching ability (multi-directional approach) is an advantageous choice if compared with the choice of building decision sequences in only one direction (unidirectional approach). The ability to evaluate decisions from multiple directions enhances the performance of the solver in the construction and selection of optimal decision sequences.
Original languageEnglish
Title of host publicationEVOLVE
Subtitle of host publicationA bridge Between Probability, Set Oriented Numerics and Evolutionary Computation III
Place of PublicationBerlin
Number of pages19
Publication statusPublished - Aug 2013
EventEVOLVE 2012 International Conference - Mexico City, Mexico
Duration: 7 Aug 20129 Aug 2012

Publication series

NameStudies in Computational Intelligence Series
PublisherSpringer Berlin Heidelberg
ISSN (Print)1860-949X


ConferenceEVOLVE 2012 International Conference
CityMexico City


  • physarum
  • multi-objective
  • multi-directional


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