Latent Clustering Models for Outlier Identification in Telecom Data

Table 2

Comparison between time-GMM and GPLSA.

	Time-GMM	GPLSA
Cluster number	Fixed number of clusters at each date	Number of clusters can adapt to each date
Cluster relations	No relation between clusters of each date	Homogeneity of clusters across dates
Interpretability	Low	High
Data used	Only a part of data is used at each date	All data is used for each date
Nb: of param.
Robustness	Medium	High