IBM ILOG Scheduler User's Manual > Getting Started with Scheduler > Adding Integral and Functional Constraints > Describe the Problem--Example 7

Describe the Problem--Example 7

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Starting with the simple model of Using the Building Blocks, we now wish to take into account the worker's part-time days. Our worker does not work on Wednesday and Saturday afternoons, so we need to specify that these days, if worked, only contribute 50% towards the processing time of an activity.

As before, Sunday is a full day off, so its contribution is 0%. In addition, there are two other days during the schedule when the worker is not available (Tuesday of the second week and Monday of the third week).

Each activity has a variable cost that depends on the activity duration. The longer the activity, the longer we must hire the worker and his tools. Our objective is to minimize the total cost of the house, that is, to supply the worker, tools, and materials at the lowest possible cost for the length of time necessary. Additionally, although it is not an objective, we would like the house to be built within 50 days, even if it increases the final cost. We will use the IloGenerate and IloSetTimesForward goals in our search for a solution.

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