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WINE
2005
Springer
122views Economy» more  WINE 2005»
14 years 3 months ago
Walrasian Equilibrium: Hardness, Approximations and Tractable Instances
We study the complexity issues for Walrasian equilibrium in a special case of combinatorial auction, called single-minded auction, in which every participant is interested in only ...
Ning Chen, Atri Rudra
FOIKS
2004
Springer
14 years 3 months ago
Query Answering and Containment for Regular Path Queries under Distortions
Abstract. We give a general framework for approximate query processing in semistructured databases. We focus on regular path queries, which are the integral part of most of the que...
Gösta Grahne, Alex Thomo
IWPEC
2004
Springer
14 years 3 months ago
Parameterized Coloring Problems on Chordal Graphs
In the precoloring extension problem (PrExt) a graph is given with some of the vertices having a preassigned color and it has to be decided whether this coloring can be extended to...
Dániel Marx
ACSAC
2003
IEEE
14 years 2 months ago
Efficient Minimum-Cost Network Hardening Via Exploit Dependency Graphs
In-depth analysis of network security vulnerability must consider attacker exploits not just in isolation, but also in combination. The general approach to this problem is to comp...
Steven Noel, Sushil Jajodia, Brian O'Berry, Michae...
ISCAS
2003
IEEE
124views Hardware» more  ISCAS 2003»
14 years 2 months ago
Convergent transfer subgraph characterization and computation
In this paper, we present a precise characterization of the existence of a convergent transfer subgraph in an edge colored directed acyclic graph. Based on the characterization, l...
Wing Ning Li