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ICML
2008
IEEE
16 years 4 months ago
Expectation-maximization for sparse and non-negative PCA
We study the problem of finding the dominant eigenvector of the sample covariance matrix, under additional constraints on the vector: a cardinality constraint limits the number of...
Christian D. Sigg, Joachim M. Buhmann
RECOMB
2005
Springer
16 years 3 months ago
Likely Scenarios of Intron Evolution
Whether common ancestors of eukaryotes and prokaryotes had introns is one of the oldest unanswered questions in molecular evolution. Recently completed genome sequences have been u...
Miklós Csürös
157
Voted
SIGMOD
2004
ACM
154views Database» more  SIGMOD 2004»
16 years 3 months ago
Computing Clusters of Correlation Connected Objects
The detection of correlations between different features in a set of feature vectors is a very important data mining task because correlation indicates a dependency between the fe...
Christian Böhm, Karin Kailing, Peer Krög...
149
Voted
WSDM
2009
ACM
188views Data Mining» more  WSDM 2009»
15 years 10 months ago
Is Wikipedia link structure different?
In this paper, we investigate the difference between Wikipedia and Web link structure with respect to their value as indicators of the relevance of a page for a given topic of re...
Jaap Kamps, Marijn Koolen
ICIP
2008
IEEE
15 years 10 months ago
Practical PTZ camera calibration using Givens rotations
Due to their ease of use and availability, pan-tilt-zoom (PTZ) cameras are everywhere. However, in order to utilize these cameras for a meaningful application, it is necessary tha...
Imran N. Junejo, Hassan Foroosh