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One approach to solving integer linear programming problems is to ignore the integer constraint and solve the problem with continuous decision variables. This is referred to as:Group of answer choicesQuick solution methodLP satisfyingLP relaxationLP approximation Previous

Question

One approach to solving integer linear programming problems is to ignore the integer constraint and solve the problem with continuous decision variables. This is referred to as:Group of answer choicesQuick solution methodLP satisfyingLP relaxationLP approximation Previous

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Solution

The approach to solving integer linear programming problems by ignoring the integer constraints and solving the problem with continuous decision variables is referred to as LP Relaxation.

Here's why:

  1. In an Integer Linear Programming (ILP) problem, some or all of the decision variables are required to be integers.

  2. If we ignore the integer constraints and allow the decision variables to take on any real values (i.e., we allow them to be continuous), we are "relaxing" the original problem.

  3. This results in a Linear Programming (LP) problem, which is easier to solve than the original ILP problem.

  4. The solution to this LP problem provides a bound on the solution to the original ILP problem. If the LP solution happens to be integer, it is also the solution to the ILP problem.

  5. However, if the LP solution is not integer, further steps are needed to find the ILP solution. These might involve rounding, but as discussed earlier, rounding can lead to suboptimal or infeasible solutions. Other techniques, such as branch and bound or cutting plane methods, are often used.

  6. Therefore, this approach is referred to as LP Relaxation.

This problem has been solved

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