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» On the structure of the Medvedev lattice
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ECAI
2004
Springer
13 years 11 months ago
OntoRefiner, a user query refinement interface usable for Semantic Web Portals
We present a user interface, the OntoRefiner1 system, for helping the user to navigate numerous retrieved documents after a search querying a semantic portal which integrates a ver...
Brigitte Safar, Hassen Kefi, Chantal Reynaud
ICGI
2010
Springer
13 years 4 months ago
Learning Context Free Grammars with the Syntactic Concept Lattice
The Syntactic Concept Lattice is a residuated lattice based on the distributional structure of a language; the natural representation based on this is a context sensitive formalism...
Alexander Clark
CALC
2001
Springer
161views Cryptology» more  CALC 2001»
13 years 12 months ago
The Shortest Vector Problem in Lattices with Many Cycles
In this paper we investigate how the complexity of the shortest vector problem in a lattice Λ depends on the cycle structure of the additive group Zn /Λ. We give a proof that the...
Mårten Trolin
ICCS
2005
Springer
14 years 27 days ago
Isotropic Vector Matrix Grid and Face-Centered Cubic Lattice Data Structures
Techniques for generating data structures for isotropic vector matrix grids (or face-centered cubic lattices) are presented. Grid basics and some background mathematical foundation...
J. F. Nystrom, Carryn Bellomo
AAECC
2002
Springer
132views Algorithms» more  AAECC 2002»
13 years 7 months ago
Lattice Structure and Linear Complexity of Nonlinear Pseudorandom Numbers
It is shown that a q-periodic sequence over the finite field Fq passes an extended version of Marsaglia's lattice test for high dimensions if and only if its linear complexity...
Harald Niederreiter, Arne Winterhof