Research Article

From Topic Networks to Distributed Cognitive Maps: Zipfian Topic Universes in the Area of Volunteered Geographic Information

Table 6

F-scores of classifying TTNs into seven target classes (CITIES, REGIONS, OTHERS, WP-REGIO-1, WP-REGIO-2, WP-OTHERS-1, and WP-OTHERS-2) by means of SVMs using RBF kernels.

MeasurealloptextB1B3 allB3 optB4 allB4 opt

1GES0.6530.7530.7980.1430.1300.2860.1210.213
2WAL0.6490.7510.7880.1430.1300.2860.1090.216
3VEO0.6770.7730.8160.1430.1300.2860.1200.221
4wges0.5590.6200.6500.1430.1300.2860.1200.199
50.6380.7220.7640.1430.1300.2860.1190.211
60.7290.7680.8530.1430.1300.2860.1250.223
70.6940.7660.8320.1430.1300.2860.1270.229
80.6420.6810.7170.1430.1300.2860.1220.212
90.7420.7730.7900.1430.1300.2860.1020.156
10NetSimile0.4790.6290.7220.1430.1300.2860.1270.229
11ToSi0.3900.4330.4650.1430.1300.2860.1080.229

Column “all”: F-scores, if all features are used by the similarity measure (row). Column “opt”: F-scores, if a subset of features selected by the genetic search is used. Column “ext”: F-scores, if a subset of features selected by the extended genetic search is used. The last five columns display the F-scores of the random baselines B1, B3, and B4, in the case of B3 and B4 differentiated for the variants all and opt.