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APPROX
2010
Springer
135views Algorithms» more  APPROX 2010»
13 years 7 months ago
Monotonicity Testing and Shortest-Path Routing on the Cube
We study the problem of monotonicity testing over the hypercube. As previously observed in several works, a positive answer to a natural question about routing properties of the hy...
Jop Briët, Sourav Chakraborty, David Garc&iac...
GIS
2004
ACM
14 years 8 months ago
Time-dependent affine triangulation of spatio-temporal data
In the geometric data model [6], spatio-temporal data are modelled as a finite collection of triangles that are transformed by time-dependent affinities. To facilitate querying an...
Sofie Haesevoets, Bart Kuijpers
EDBT
2008
ACM
108views Database» more  EDBT 2008»
14 years 7 months ago
Revisiting redundancy and minimization in an XPath fragment
Redundancy and minimization of queries are investigated in a well known fragment of XPath that includes child and descendant edges, branches, wildcards, and multiple output nodes....
Benny Kimelfeld, Yehoshua Sagiv
FOCS
2009
IEEE
14 years 2 months ago
Local Graph Partitions for Approximation and Testing
—We introduce a new tool for approximation and testing algorithms called partitioning oracles. We develop methods for constructing them for any class of bounded-degree graphs wit...
Avinatan Hassidim, Jonathan A. Kelner, Huy N. Nguy...
ICIP
2002
IEEE
14 years 9 months ago
Affine transformation resistant watermarking based on image normalization
Geometric attacks are among the most challenging problems in present day watermarking. Such attacks are very simple to implement yet they can defeat most of the existing watermark...
Ping Dong, Nikolas P. Galatsanos