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» Community discovery using nonnegative matrix factorization
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CSCW
2006
ACM
13 years 11 months ago
What goes around comes around: an analysis of del.icio.us as social space
An emergent class of web applications blurs the boundary between single user application and online public space. Recently popular web applications like del.icio.us help manage in...
Kathy J. Lee
ICPR
2006
IEEE
14 years 6 months ago
Recognizing Facial Expressions by Tracking Feature Shapes
Reliable facial expression recognition by machine is still a challenging task. We propose a framework to recognise various expressions by tracking facial features. Our method uses...
Atul Kanaujia, Dimitris N. Metaxas
UAI
2003
13 years 6 months ago
On the Convergence of Bound Optimization Algorithms
Many practitioners who use EM and related algorithms complain that they are sometimes slow. When does this happen, and what can be done about it? In this paper, we study the gener...
Ruslan Salakhutdinov, Sam T. Roweis, Zoubin Ghahra...
WSDM
2012
ACM
301views Data Mining» more  WSDM 2012»
12 years 26 days ago
Learning evolving and emerging topics in social media: a dynamic nmf approach with temporal regularization
As massive repositories of real-time human commentary, social media platforms have arguably evolved far beyond passive facilitation of online social interactions. Rapid analysis o...
Ankan Saha, Vikas Sindhwani
BMCBI
2007
179views more  BMCBI 2007»
13 years 5 months ago
rMotifGen: random motif generator for DNA and protein sequences
Background: Detection of short, subtle conserved motif regions within a set of related DNA or amino acid sequences can lead to discoveries about important regulatory domains such ...
Eric C. Rouchka, C. Timothy Hardin