“…Each activity (production task) is connected with the value q ij , explicitly presenting the gained quality, usually gained accuracy class, the number of faults (faulty products) and even more parameters -a vector of quality. Events, which start or end the tasks of production process, and are nodes of a graph, v i , may be analyzed similarly as in Matuszek, Moczała and Kosturiak (1998), and we can attribute to them the following collections of functions, corresponding to time, quality and cost:…”