Table 4. Performance (f -measure) of QSTNVR, QSTWVR, and QSTDVR with k-means and k-medoids on the ODP-239 dataset.

Clustering Methods	QSTDVR	QSTWVR	QSTNVR
k-means	84.12	84.36	72.7
k-medoids	82.3	81.45	75.3