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» Summability in topological spaces
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CONEXT
2006
ACM
15 years 4 months ago
Shortcuts in a virtual world
We consider the case of a virtual world of peers that are organized in an overlay built by Delaunay Triangulation. Application layer routing is used to determine the path taken in...
Moritz Steiner, Ernst W. Biersack
IJON
2008
88views more  IJON 2008»
14 years 10 months ago
Neural network construction and training using grammatical evolution
The term neural network evolution usually refers to network topology evolution leaving the network's parameters to be trained using conventional algorithms. In this paper we ...
Ioannis G. Tsoulos, Dimitris Gavrilis, Euripidis G...
CORR
2011
Springer
162views Education» more  CORR 2011»
14 years 5 months ago
Helly numbers of acyclic families
The Helly number of a family of sets with empty intersection is the size of its largest inclusionwise minimal sub-family with empty intersection. Let F be a finite family of open...
Éric Colin de Verdière, Grégo...
COMPGEOM
2004
ACM
15 years 3 months ago
Time-varying reeb graphs for continuous space-time data
The Reeb graph is a useful tool in visualizing real-valued data obtained from computational simulations of physical processes. We characterize the evolution of the Reeb graph of a...
Herbert Edelsbrunner, John Harer, Ajith Mascarenha...
ICDAR
2003
IEEE
15 years 3 months ago
Two Approaches for Text Segmentation in Web Images
There is a significant need to recognise the text in images on web pages, both for effective indexing and for presentation by non-visual means (e.g., audio). This paper presents a...
Dimosthenis Karatzas, Apostolos Antonacopoulos