76 citations · 357 across the 44 of their papers we have counts for
4 papers · 1 filter
Covariate Regularized Community Detection in Sparse Graphs
Bowei Yan, Purnamrita Sarkar
In this paper, we investigate community detection in networks in the presence of node covariates. In many instances, covariates and networks individually only give a partial view o…
On Mixed Memberships and Symmetric Nonnegative Matrix Factorizations
Xueyu Mao, Purnamrita Sarkar, Deepayan Chakrabarti
The problem of finding overlapping communities in networks has gained much attention recently. Optimization-based approaches use non-negative matrix factorization (NMF) or variants…
On clustering network-valued data
Soumendu Sundar Mukherjee, Purnamrita Sarkar, Lizhen Lin
Community detection, which focuses on clustering nodes or detecting communities in (mostly) a single network, is a problem of considerable practical interest and has received a gre…
On Robustness of Kernel Clustering
Bowei Yan, Purnamrita Sarkar
Clustering is one of the most important unsupervised problems in machine learning and statistics. Among many existing algorithms, kernel k-means has drawn much research attention d…