*Periodicity.:*

**January - March 2015***e-ISSN......:*

**2236-269X**### Comparing Mixed & Integer Programming vs. Constraint Programming by solving Job-Shop Scheduling Problems

#### Abstract

*a)*model CP1 is a standard IBM algorithm whereof restrictions have an interval structure that fail to solve 53% of the proposed instances,

*b)*Model CP-2 approaches the problem with disjunctive constraints and optimized 88% of the instances. In this work, each model is individually analyzed and then compared considering: i) Optimization success performance,

*ii)*Computational processing time,

*iii)*Greatest Resource Utilization and, iv) Minimum Work-in-process Inventory. Results demonstrated that CP-2 presented best results on criteria

*i*and

*ii*, but MIP was superior on criteria

*iii*and

*iv*and those findings are discussed at the final section of this work.

#### Keywords

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DOI: http://dx.doi.org/10.14807/ijmp.v6i1.262

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