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We measure kitchen “busyness” by checking recent orders being made to the kitchen. Since each order has a Processing Time we can estimate at any point in time, the Time to Clear Kitchen (TCK). This is the time needed for the kitchen to complete all mobile orders. We consider a kitchen to be busy when the next order Processing Time + TCK is larger than the Busy Kitchen Threshold set above; in other words, the kitchen is busy when we cannot squeeze another order without TCK exceeding the Busy Kitchen Threshold.
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