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# QingPeng (QP) Zhang  Sensitivity analysis is concerned with how changes in an linear programming’s parameters affect the optimal.

## Presentation on theme: "QingPeng (QP) Zhang  Sensitivity analysis is concerned with how changes in an linear programming’s parameters affect the optimal."— Presentation transcript:

QingPeng (QP) Zhang qpzhang@email.arizona.edu

 Sensitivity analysis is concerned with how changes in an linear programming’s parameters affect the optimal solution.

Profit generated by each soldier \$3 Profit generated by each train \$2

Constraint/ObjectiveSlope Finishing constraint-2 Carpentry constraint-1.5 Objective function Basic variable Basic solution

CChange objective function coefficient CChange right-hand side of constraint OOther change options SShadow price TThe Importance of sensitivity analysis

 How would changes in the problem’s objective function coefficients or the constraint’s right-hand sides change this optimal solution?

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 Change objective function coefficient  Change right-hand side of constraint  Other change options  Shadow price  The Importance of sensitivity analysis

 As long as the binding point (B) of finishing and carpentry constraints is feasible, optimal solution will occur at the binding point.

 Change objective function coefficient  Change right-hand side of constraint  Other change options  Shadow price  The Importance of sensitivity analysis

 Change objective function coefficient  Change right-hand side of constraint  Other change options  Shadow price  The Importance of sensitivity analysis

 To determine how a constraint’s rhs changes the optimal z-value.  The shadow price for the ith constraint of an LP is the amount by which the optimal z-value is improved (increased in a max problem or decreased in a min problem).

 Change objective function coefficient  Change right-hand side of constraint  Other change options  Shadow price  The Importance of sensitivity analysis

 Deal with the uncertainty about LP parameters

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