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nd
               The 2  International Seminar of Science and Technology
               “Accelerating Sustainable innovation towards Society 5.0”
               ISST 2022 FST UT 2022
               Universitas Terbuka
                   5     0.3527553           102                 0.83
                   6     0.3677679           118                 1.18
                   7     0.3386125           115                 1.29
                   8     0.3216874           164                 2.11

               Grouping with use PFCM method shows that optimal cluster formed
               i.e. 2. This seen from score MPC highest that is as big as 0.5538285
               with  amount  iteration  as  many  as  31  and  time  computing  0.11
               seconds.

               3.1  Cluster Method Comparison
               3.2.1  Number of Iterations
               Comparison  of  the  number  of  iterations  in  Table.4.  shows  that  the
               FPCM. method has fewer iterations than the FCM. method and PFCM
               on all clusters. So, it can be concluded that the FPCM. method have
               more iterations little compared to FCM and PFCM.
                             Table 4. Comparison Amount Iteration
                                             Amount Iteration
                Cluster
                                FCM         FPCM                PFCM
                      2           49            33               49
                      3           73            43               70
                      4           179           119              210
                      5           127           74               102
                      6           121           66               118
                      7           177           112              115
                      8           179           150              164
               3.2.2  Computing Time
                             Table 5. Computing Time Comparison
                                             Amount Iteration
                Cluster
                                FCM        FPCM                PFCM
                     2           0.15          0.11             0.17


               ISST 2022 – FST Universitas Terbuka, Indonesia             45
               International Seminar of Science and Technology “Accelerating Sustainable
               Towards Society 5.0
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