High-Dimensional Text Clustering by Dimensionality Reduction and Improved Density Peak

Table 7

The NMI of each clustering algorithm.

Dataset		DPC-K-means	DPC	DBSCAN	Spectral Clustering	Affinity Propagation
BBC		0.9028	0.8681	0.5652	0.8650	0.3696
20-newsgroups	4 groups	0.9763	0.9623	0.6725	0.9577	0.3628
	5 groups	0.8421	0.8381	0.6709	0.8404	0.3653
	6 groups	0.7721	0.7351	0.5721	0.6987	0.3304
	7 groups	0.7078	0.6487	0.5511	0.6498	0.3602
	8 groups	0.6858	0.5507	0.2846	0.6249	0.3719
Sports Article		0.1870	0	0.1286	0.1849	0.0307
Asian Religious		0.2673	0.0163	0	0.2443	0.2094
Stack Overflow		0	0	0.0518	0.0204	0.0819
Amazon		0	0.0048	0	0	0.0116