Integerlinear programs are LP models with some or all of the decision variables restricted to integer values only.
LP in which all the decision variables are restricted to be integers is called an all-integer linear program.
LP in which only a subset of the decision variables is restricted to be integers is called a mixed-integer linear
Integer Program – Example 1 Integer Model – Some Facts
Rounding off the LP solution is one way to reach integer solution values, but It often does not yield the optimal
IP solution (ALWAYS ROUND DOWN!!!)
An important concept to