Sciweavers

37 search results - page 2 / 8
» Recursive Principal Component Analysis of Graphs
Sort
View
ICASSP
2009
IEEE
13 years 9 months ago
Principal component analysis in decomposable Gaussian graphical models
We consider principal component analysis (PCA) in decomposable Gaussian graphical models. We exploit the prior information in these models in order to distribute its computation. ...
Ami Wiesel, Alfred O. Hero III
CORR
2008
Springer
77views Education» more  CORR 2008»
13 years 5 months ago
Principal Graphs and Manifolds
In many physical statistical, biological and other investigations it is desirable to approximate a system of points by objects of lower dimension and/or complexity. For this purpo...
Alexander N. Gorban, Andrei Yu. Zinovyev
ICPR
2002
IEEE
14 years 6 months ago
Building the Topological Tree by Recursive FCM Color Clustering
In this paper we define a Topological Tree (TT) as a knowledge representation method that aims to describe important visual and spatial features of image regions, namely the color...
Rita Cucchiara, Costantino Grana, Andrea Prati, St...
ISI
2004
Springer
13 years 10 months ago
Studying E-Mail Graphs for Intelligence Monitoring and Analysis in the Absence of Semantic Information
Abstract. This work describes a methodology that can be used to identify structure and communication patterns within an organization based on e-mail data. The first step of the me...
Petros Drineas, Mukkai S. Krishnamoorthy, Michael ...
INFOCOM
2007
IEEE
13 years 11 months ago
Multivariate Online Anomaly Detection Using Kernel Recursive Least Squares
— High-speed backbones are regularly affected by various kinds of network anomalies, ranging from malicious attacks to harmless large data transfers. Different types of anomalies...
Tarem Ahmed, Mark Coates, Anukool Lakhina