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11.1  Characterization of “Lasagna Processes”                   279



            Fig. 11.2 The C-net
            discovered using the heuristic
            miner (a)and the
            corresponding Petri net with
            missing and remaining tokens
            after replay (b). The numbers
            generated by the heuristic
            miner show the flow of
            tokens. The C-net was
            translated into an equivalent
            Petri net with silent
            transitions. The fitness was
            analyzed using the ProM’s
            conformance checker (cf.
            Sect. 7.2). The fitness of the
            discovered process is
            0.99521667. Of the 528
            cases, 496 cases fit perfectly
            whereas for 32 cases there are
            missing or remaining tokens.
            The missing and remaining
            tokens show where the model
            and log deviate. For example,
            for two cases the activity
            “40 toetsen en beslissen”
            (evaluate and decide) was not
            started although it should
            have. Activity
            “20 Rapportage &
            beschikking” (report and
            intermediate decision) was
            started twice while this was
            not possible according to the
            model
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