Sciweavers

GG
2008
Springer
13 years 8 months ago
On the Recognizability of Arrow and Graph Languages
In this paper we give a category-based characterization of recognizability. A recognizable subset of arrows is defined via a functor into the category of relations on sets, which ...
Harrie Jan Sander Bruggink, Barbara König
GG
2008
Springer
13 years 8 months ago
Resolution-Like Theorem Proving for High-Level Conditions
The tautology problem is the problem to prove the validity of statements. In this paper, we present a calculus for this undecidable problem on graphical conditions, prove its sound...
Karl-Heinz Pennemann
GG
2008
Springer
13 years 8 months ago
Graph Transformation for Topology Modelling
In this paper we present meta-rules to express an infinite class of semantically related graph transformation rules in the context of pure topological modelling with G-maps. Our p...
Mathieu Poudret, Agnès Arnould, Jean-Paul C...
GG
2008
Springer
13 years 8 months ago
Adaptive Star Grammars for Graph Models
Abstract. Adaptive star grammars generalize well-known graph grammar formalisms based on hyperedge and node replacement while retaining, e.g., parseability and the commutativity an...
Frank Drewes, Berthold Hoffmann, Mark Minas
FOCS
2008
IEEE
13 years 8 months ago
Quantum Multi Prover Interactive Proofs with Communicating Provers
We introduce another variant of Quantum MIP, where the provers do not share entanglement, the communication between the verifier and the provers is quantum, but the provers are u...
Michael Ben-Or, Avinatan Hassidim, Haran Pilpel
FOCS
2008
IEEE
13 years 8 months ago
Set Covering with our Eyes Closed
Given a universe U of n elements and a weighted collection S of m subsets of U, the universal set cover problem is to a-priori map each element u ∈ U to a set S(u) ∈ S contain...
Fabrizio Grandoni, Anupam Gupta, Stefano Leonardi,...
FOCS
2008
IEEE
13 years 8 months ago
On the Approximability of Budgeted Allocations and Improved Lower Bounds for Submodular Welfare Maximization and GAP
In this paper we consider the following maximum budgeted allocation (MBA) problem: Given a set of m indivisible items and n agents; each agent i willing to pay bij on item j and w...
Deeparnab Chakrabarty, Gagan Goel