## Appendix C Taxonomy of Metrics \begin{tabular}{l l l l l l} \hline \hline
**\#** & **Metric** & **Year** & **Auth** & **Def.** & **Demo** & **Type** & **Src** \\ \hline
1 & Number of Activities (NOA) & 2006 & [PERSON] et al. & Counts the number of activities in a process. & Y & D & [83] \\
2 & Number of Activities and Control flow elements (NOAC) & 2006 & [PERSON] et al. & Counts the number of activities and control flow elements in a process. & Y & D & [83] \\
3 & Number of Activities, Joins and Splits (NOAJS) & 2006 & [PERSON] et al. & Counts the number of activities, Splits and joins in a process. (XOR, OR, AND) & Y & D & [83] \\
4 & Cyclomatic Complexity (CYC) & 1976 & [PERSON] & Indicates the process's control flow complexity by counting number of edges & Y & D & [105] \\
5 & Control Flow Complexity (CFC) & 2005 & [PERSON] & The metric is calculated by adding the CFC's of all split constructs (XOR, OR, AND). & Y & PD & [106, 107] \\
6 & Process Volume (HPC, V) & 2006 & [PERSON] et al. & Calculates the volume of a process using number of nodes and edges. & Y & D & [83] \\
7 & Process Length (HPC,N) & 2006 & [PERSON] et al. & Calculates a length of the process using number of nodes and edges. & Y & D & [83] \\
8 & Process Difficulty (HPC,D) & 2006 & [PERSON] et al. & Calculates a difficulty of the process using number of nodes and edges. & Y & D & [83] \\
9 & Complexity of a Procedure (PC) & 1981 & [PERSON], [PERSON] & Using the number of calls to/from the module the metric is evaluated as \(PC\) = & Y & D & [108] \\
10 & Interface Complexity (IC) & 2006 & [PERSON], [PERSON] & Using the number of inputs * number of outputs/\({}^{\prime}\)2. & Y & D & [108] \\
11 & Coefficient of Network Complexity (CNC) & 2006 & [PERSON] & Complexity CNC is calculated by dividing the number of arcs by the number of activities, joins and Splits. (_No of arcs / (No of activities, joins, and Splits)_). & N & D & [1] \\
12 & Restrictiveness estimator (RT) & 2006 & [PERSON] & The metric calculates the number of sequences in the graph. & N & D & [1] \\
13 & Complexity index (CI) & 2006 & [PERSON] et al. & The metric performs an algorithmic calculation of the minimal number of node reductions required to reduce the process graph into a single node. & N & D & [83] \\
14 & Cognitive Complexity Metrics (Weights) & 2006 & [PERSON], [PERSON] & Using a pre-defined cognitive weight scale for BPM, the individual weight of the model is generated. & N & PD & [109] \\
15 & Cognitive Functionality Size (CFS) & 2003 & [PERSON] & Evaluated using the cognitive functional size of the model. & Y & S & [110] \\ Extended Cardoso Metrics (EGM) & 2009 & [PERSON], WMP & The metric follows [PERSON] approach for petri nets. It works by penalizing direct successor states in the model. & Y & D & [77] \\
16 & Extended Cyclomatic Metrics (EGM) & 2009 & [PERSON], WMP & The behavioural complexity of the graph is calculated by creating and analysing a reachability matrix. & Y & D & [77] \\
17 & Structuredness Metric (SM) & 2009 & [PERSON], WMP & The structureness of a model is a combination of behavioural and syntax complexity together. & Y & PD & [77] \\ \hline \hline \end{tabular}   
* [20] [PERSON] et al. The number of concurrent paths obtained after introduction of new control nodes such as AND or OR. * [21] [PERSON] et al. The number of correctly retrieved relationships divided by the total number of retrieved relationships divided by the total number of correct relationships possible. * [22] [PERSON] et al. The number of reference compounds found up to rank k, divided by k (where k is the subset of compounds in the process graph). * [23] [PERSON] et al. The average of the precision values measured at the point at which each correct results is retrieved for one example/trace. * [73] Gateway Mismatch (GM) 2012 L \(\check{\text{S}}\)[PERSON] et al. (2012) L \(\check{\text{S}}\)[PERSON] et al. (2012) The extent to which different types of gateways are used in the model. \(\check{\text{Y}}\) S (127)
* [75] Total Number of Sequence Flows (TNSF) 2006 [PERSON] et al.