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PODS
2002
ACM
98views Database» more  PODS 2002»
16 years 4 months ago
On Propagation of Deletions and Annotations Through Views
We study two classes of view update problems in relational databases. We are given a source database S, a monotone query Q, and the view Q(S) generated by the query. The first pro...
Peter Buneman, Sanjeev Khanna, Wang Chiew Tan
TNN
2008
128views more  TNN 2008»
15 years 3 months ago
Nonnegative Matrix Factorization in Polynomial Feature Space
Abstract--Plenty of methods have been proposed in order to discover latent variables (features) in data sets. Such approaches include the principal component analysis (PCA), indepe...
Ioan Buciu, Nikos Nikolaidis, Ioannis Pitas
ICPR
2004
IEEE
16 years 5 months ago
Selective Sampling Based on the Variation in Label Assignments
In this paper, a new selective sampling method for the active learning framework is presented. Initially, a small training set ? and a large unlabeled set ? are given. The goal is...
Piotr Juszczak, Robert P. W. Duin
VR
2011
IEEE
309views Virtual Reality» more  VR 2011»
14 years 7 months ago
Two-handed tangible interaction techniques for composing augmented blocks
Abstract Modeling tools typically have their own interaction methods for combining virtual objects. For realistic composition in 3D space, many researchers from the fields of virt...
Hyeongmook Lee, Mark Billinghurst, Woontack Woo
CHI
2008
ACM
16 years 4 months ago
Wedge: clutter-free visualization of off-screen locations
To overcome display limitations of small-screen devices, researchers have proposed techniques that point users to objects located off-screen. Arrow-based techniques such as City L...
Sean Gustafson, Patrick Baudisch, Carl Gutwin, Pou...