A Hybrid Multi-Objective Teaching Learning-Based Optimization Using Reference Points and R2 Indicator

Farajollah Tahernezhadjavazm, Debbie Rankin, Damien Coyle

Research output: Chapter or section in a book/report/conference proceedingChapter in a published conference proceeding


Hybrid multi-objective evolutionary algorithms have recently become a hot topic in the domain of metaheuristics. Introducing new algorithms that inherit other algorithms' operators and structures can improve the performance of the algorithm. Here, we proposed a hybrid multi-objective algorithm based on the operators of the genetic algorithm (GA) and teaching learning-based optimization (TLBO) and the structures of reference point-based (from NSGA-III) and R2 indicators methods. The new algorithm (R2-HMTLBO) improves diversity and convergence by using NSGA-III and R2-based TLBO, respectively. Also, to enhance the algorithm performance, an elite archive is proposed. The proposed multi-objective algorithm is evaluated on 19 benchmark test problems and compared to four state-of-the-art algorithms. IGD metric is applied for comparison, and the results reveal that the proposed R2-HMTLBO outperforms MOEA/D, MOMBI-II, and MOEA/IGD-NS significantly in 16/19 tests, 14/19 tests and 13/19 tests, respectively. Furthermore, R2-HMTLBO obtained considerably better results compared to all other algorithms in 4 test problems, although it does not outperform NSGA-III on a number of tests.
Original languageEnglish
Title of host publicationISMSI 2022 - 6th International Conference on Intelligent Systems, Metaheuristics and Swarm Intelligence
Place of PublicationUnited States
PublisherAssociation for Computing Machinery
Number of pages5
Publication statusPublished - 24 Jun 2022
EventInternational Conference on Intelligent Systems, Metaheuristics & Swarm Intelligence - Seoul, Korea, Republic of
Duration: 9 Apr 202210 Apr 2022

Publication series

NameACM International Conference Proceeding Series
PublisherAssociation for Computing Machinery


ConferenceInternational Conference on Intelligent Systems, Metaheuristics & Swarm Intelligence
Abbreviated titleISMSI2022
Country/TerritoryKorea, Republic of


  • Evolutionary algorithm
  • Multi-objective optimization
  • Genetic Algorithm
  • Teaching Learning-based optimization
  • R2 indicator
  • Reference directions
  • Multi-objective evolutionary algorithm (MOEA)
  • Optimization algorithm
  • Reference point-based method
  • Teaching learning-based optimization (TLBO)


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