76 citations · 357 across the 44 of their papers we have counts for
3 papers · 2 filters
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…