Fuzzy Clustering Analysis of HVSR Data for Seismic Microzonation at Lahore City

Table 2

Comparison of different clustering algorithms.

Criteria	FCM	Hierarchical	K-mean	K-mediod	DBSCAN
Initial condition	YES	YES	YES	YES	YES
Termination condition	Precise	Not precise	Precise	Precise	Precise
Effect on size of data set	Good	Not good	Good	Not good	Not good
Shape of data set	Convex	Arbitrary	Convex	Convex	Arbitrary
Granularity	Flexible	Flexible	K and initial point	K and initial point	Threshold
Result optimization	Optimization	Optimization	Rebuild optimization	Rebuild optimization	Rebuild optimization
Distance measurement	Centroid	Any	Distance at normal space	Distance at normal space	Density
Accuracy without noise	90%	88%	76%	80%	71%