785 search results - page 50 / 157 » An Algebra of Hierarchical Graphs |
STACS
1997
Springer
14 years 2 months ago
1997
Springer
Exotic semirings such as the “(max, +) semiring” (R ∪ {−∞}, max, +), or the “tropical semiring” (N ∪ {+∞}, min, +), have been invented and reinvented many times s...
CP
2007
Springer
14 years 1 months ago
2007
Springer
Abstract. Computing the minimal network (or minimal CSP) representation of a given set of constraints over the Point Algebra (PA) is a fundamental reasoning problem. In this paper ...
WAOA
2004
Springer
14 years 3 months ago
2004
Springer
Abstract. A strong vertex coloring of a hypergraph assigns distinct colors to vertices that are contained in a common hyperedge. This captures many previously studied graph colorin...
CSR
2008
Springer
13 years 11 months ago
2008
Springer
Abstract. Deterministic graph grammars are finite devices which generate the transition graphs of pushdown automata. We define the notion of synchronization by grammars, generalizi...
IBPRIA
2005
Springer
14 years 3 months ago
2005
Springer
In this paper, we propose a new method to extract moving objects from a video stream without any motion estimation. The objective is to obtain a method robust to noise, large motio...