Sciweavers

4987 search results - page 880 / 998
» Support Ordered Resolution
Sort
View
ICALP
2011
Springer
14 years 8 months ago
Improved Approximation for the Directed Spanner Problem
We present an O( √ n log n)-approximation algorithm for the problem of finding the sparsest spanner of a given directed graph G on n vertices. A spanner of a graph is a sparse ...
Piotr Berman, Arnab Bhattacharyya, Konstantin Maka...
TPHOL
1997
IEEE
15 years 8 months ago
An Isabelle-Based Theorem Prover for VDM-SL
This note lists references which address –in some way or another– the problems relating to formal manipulation of logical expressions where terms can fail to denote. Reference...
Sten Agerholm, Jacob Frost
CVPR
2003
IEEE
16 years 6 months ago
Learning Affinity Functions for Image Segmentation: Combining Patch-based and Gradient-based Approaches
This paper studies the problem of combining region and boundary cues for natural image segmentation. We employ a large database of manually segmented images in order to learn an o...
Charless Fowlkes, David R. Martin, Jitendra Malik
ICDE
2009
IEEE
176views Database» more  ICDE 2009»
16 years 6 months ago
Discovering Conditional Functional Dependencies
This paper investigates the discovery of conditional functional dependencies (CFDs). CFDs are a recent extension of functional dependencies (FDs) by supporting patterns of semantic...
Wenfei Fan, Floris Geerts, Laks V. S. Lakshmanan, ...
ICDE
2008
IEEE
336views Database» more  ICDE 2008»
16 years 5 months ago
Dominant Graph: An Efficient Indexing Structure to Answer Top-K Queries
Given a record set D and a query score function F, a top-k query returns k records from D, whose values of function F on their attributes are the highest. In this paper, we investi...
Lei Zou, Lei Chen 0002