Welcome to Dick Barr’s Operations Research Toolkit home page, with instructional software developed for his classes at Southern Methodist University’s Lyle School of Engineering in the Department of Operations Research and Engineering Management.
Tools for solving the following OR model types are provided:
 Linear programming
 BLP: linear programming optimization models
 Mr. T: generates a sequence of tableaus for solving a linear program
 Mr. Pivot: practice pivoting simplex tableaus
 GLPK: algebraic modeling language for LP and MIP problems
 Networks and graphs
 Spath: 1toall shortest path problems
 CPM: criticalpath method for project management networks
 OPTNET: minimumcost network flow optimization models
 MST: minimal spanningtree problems
 Decision Analysis
 DTree: decision tree model analyzer
 Queueing and stochastic processes
 QCalc: waitingline/queueing models
 Forecasting
 MLR: multiple linear regression forecasting models
 SMOOTHIE: timeseries forecasting models, including moving averages, exponential smoothing (single and double), trend, arithmetic mean, and decomposition
 Production and operations (from POMlib site)
 JSeq, jobsequencing models for singlestage and multistage processes
 LineMan: assemblyline balancing
 ISIM: inventory simulation with uncertain demand and lead times
 CRAFT: facilities layout using the Computerized Relative Allocation of Facilities Technique
 SQC: statistical quality control charts for variable and attribute data, including Six Sigma calculations
Pick the model category from the navigation bar to your left. Each tool has an online help page with sample data. Detailed instructions and a user’s guide for interpreting the results are given in the class notes.
