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ICIP
2005
IEEE
16 years 25 days ago
New image transforms using hybrid wavelets and directional filter banks: analysis and design
We propose a new family of perfect reconstruction, non-redundant, and multiresolution geometrical image transforms using the wavelet transform in conjunction with modified versions...
Ramin Eslami, Hayder Radha
CHI
2005
ACM
15 years 11 months ago
Using treemaps to visualize threaded discussion forums on PDAs
This paper describes a new way of visualizing threaded discussion forums on compact displays. The technique uses squarified treemaps to render the threads in discussion forums as ...
Björn Engdahl, Gary Marsden, Malin Köksa...
SIGMOD
2001
ACM
147views Database» more  SIGMOD 2001»
15 years 11 months ago
Optimizing Queries Using Materialized Views: A practical, scalable solution
Materialized views can provide massive improvements in query processing time, especially for aggregation queries over large tables. To realize this potential, the query optimizer ...
Jonathan Goldstein, Per-Åke Larson
WALCOM
2010
IEEE
290views Algorithms» more  WALCOM 2010»
15 years 6 months ago
The Covert Set-Cover Problem with Application to Network Discovery
We address a version of the set-cover problem where we do not know the sets initially (and hence referred to as covert) but we can query an element to find out which sets contain ...
Sandeep Sen, V. N. Muralidhara
STACS
2010
Springer
15 years 6 months ago
Log-space Algorithms for Paths and Matchings in k-trees
Reachability and shortest path problems are NL-complete for general graphs. They are known to be in L for graphs of tree-width 2 [14]. However, for graphs of treewidth larger than ...
Bireswar Das, Samir Datta, Prajakta Nimbhorkar