Using improved genetic algorithms to facilitate time-cost optimization

Heng Li, Peter Love

Research output: Journal article publicationJournal articleAcademic researchpeer-review

176 Citations (Scopus)


Time-cost optimization problems in construction projects are characterized by the constraints on the time and cost requirements. Such problems are difficult to solve because they do not have unique solutions. Typically, if a project is running behind the scheduled plan, one option is to compress some activities on the critical path so that the target completion time can be met. As combinatorial optimization problems, time-cost optimization problems are suitable for applying genetic algorithms (GAs). However, basic GAs may involve very large computational costs. This paper presents several improvements to basic GAs and demonstrates how these improved GAs reduce computational costs and significantly increase the efficiency in searching for optimal solutions.
Original languageEnglish
Pages (from-to)233-237
Number of pages5
JournalJournal of Construction Engineering and Management
Issue number3
Publication statusPublished - 1 Jan 1997

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Industrial relations
  • Strategy and Management


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