Critical Paths
W. D. Wallis · Birkhäuser Boston eBooks · 2000
One application of digraphs is in the scheduling of compound activities, ones that are made up of various tasks. One easy example is building a house. There are several different tasks — roofing, assembling walls, carpeting and so on. Sometimes there is a strict priority relationship (you cannot lay carpet until the floors are done); sometimes the tasks are independent (carpeting can be done before, after or during the exterior painting). We shall assume that these are the only possibilities: given two tasks a and b either one must precede the other or they are independent. These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.