1 Introduction
2 Network generation
2.1 Arrival time record selection
2.2 Gathering events clustering
2.3 Link generation
1 | 2 | 3 | 4 | 5 | |
---|---|---|---|---|---|
1 | – | 0 | 0.33 | 0.5 | 0 |
2 | 0 | – | 0.33 | 0.5 | 0 |
3 | 0.33 | 0.33 | – | 0.67 | 0.33 |
4 | 0.5 | 0.5 | 0.67 | – | 0.33 |
5 | 0 | 0 | 0.33 | 0.33 | – |
3 Coincidental link filtering
3.1 Null model
3.2 Problems with null model
3.3 Fuzzy C-means filter
4 Experimental evaluation
4.1 Labelled datasets
4.1.1 Datasets used
4.1.2 Experimental setup
4.1.3 Results and discussion
Link generation | Link filter | Precision | Recall | F-1 score | Running time |
---|---|---|---|---|---|
FCM (\(K=3\)) | FCM (\(C=2\)) | 0.7635 | 0.9284 | 0.8379 | 0.154 |
Null model | 0.82 | 0.7973 | 0.8085 | 3.444 | |
GMM (\(K=3\)) | FCM (\(C=2\)) | 0.9324 | 0.9390 | 0.9357 | 0.119 |
Null model | 0.9342 | 0.9268 | 0.9305 | 3.532 |
Link generation | Link filter | Precision | Recall | F-1 score | Running time |
---|---|---|---|---|---|
FCM (\(K=3\)) | FCM (\(C=2\)) | 0.7423 | 0.8875 | 0.8084 | 0.407 |
Null model | 0.8286 | 0.7760 | 0.8014 | 12.335 | |
GMM (\(K=3\)) | FCM (\(C=2\)) | 0.7501 | 0.7619 | 0.7560 | 0.406 |
Null model | 0.7493 | 0.7469 | 0.7481 | 12.473 |
Link generation | Link filter | Precision | Recall | F-1 score | Running time |
---|---|---|---|---|---|
FCM (\(K=3\)) | FCM (\(C=2\)) | 0.7649 | 0.9673 | 0.8543 | 0.223 |
Null model | 0.9174 | 0.797 | 0.8530 | 6.476 | |
GMM (\(K=3\)) | FCM (\(C=2\)) | 0.7798 | 0.7878 | 0.7838 | 0.235 |
Null model | 0.7811 | 0.7795 | 0.7803 | 6.637 |
4.2 Artificial data streams
4.2.1 Experimental setup
4.2.2 Results and discussion
Filter method | Evaluation |
\(K = 30\)
|
\(K = 40\)
|
\(K = 50\)
|
---|---|---|---|---|
FCM (\(C=2\)) | F1-score | 0.9336 | 0.9933 | 1.000 |
Running time | 0.0150 | 0.0300 | 0.0126 | |
Null model | F1-score | 0.9128 | 0.9202 | 0.9595 |
Running time | 0.2581 | 0.3437 | 0.2595 |
Filter method | Evaluation |
\(K = 100\)
|
\(K = 150\)
|
\(K = 200\)
|
---|---|---|---|---|
FCM (\(C=2\)) | F1-score | 0.9912 | 0.9989 | 1.000 |
Running time | 0.0512 | 0.0882 | 0.0675 | |
Null model | F1-score | 0.7059 | 0.8257 | 0.9847 |
Running time | 1.5789 | 1.6748 | 1.7531 |