An ILP model with logical constraints for mail sorting facility selection

Hong Yan

Research output: Journal article publicationJournal articleAcademic researchpeer-review

1 Citation (Scopus)


This paper studies a facility selection problem which is generalised from the design of a mail sorting system with multiple input and output. The problem is formulated as a 0-1 integer linear programming (ILP) problem with logical constraints. We show how the logical constraints can be embedded into a ILP model. We compare three strategies for handling logical relations: (1) explicitly as added linear constraints; (2) implicitly as symbolic constraints; and (3) a combination of the two. The effectiveness of computations under different strategies are shown.
Original languageEnglish
Pages (from-to)273-277
Number of pages5
JournalJournal of the Operational Research Society
Issue number3
Publication statusPublished - 1 Jan 1998


  • Integer programming
  • Logical constraint
  • Mail sorting

ASJC Scopus subject areas

  • Management Information Systems
  • Strategy and Management
  • Management Science and Operations Research
  • Marketing


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