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LPNMR
2007
Springer
16 years 1 months ago
Head-Elementary-Set-Free Logic Programs
Abstract. The recently proposed notion of an elementary set yielded a refinement of the theorem on loop formulas, telling us that the stable models of a disjunctive logic program ...
Martin Gebser, Joohyung Lee, Yuliya Lierler
NETCOOP
2007
Springer
16 years 1 months ago
A Network Formation Game Approach to Study BitTorrent Tit-for-Tat
The Tit-for-Tat strategy implemented in BitTorrent (BT) clients is generally considered robust to selfish behaviours. The authors of [1] support this belief studying how Tit-for-T...
Giovanni Neglia, Giuseppe Lo Presti, Honggang Zhan...
WINE
2007
Springer
191views Economy» more  WINE 2007»
16 years 1 months ago
The Importance of Network Topology in Local Contribution Games
We consider a model of content contribution in peer-to-peer networks with linear quadratic payoffs and very general interaction patterns. We find that Nash equilibria of this gam...
Jacomo Corbo, Antoni Calvó-Armengol, David ...
FOCS
2006
IEEE
16 years 1 months ago
Minimum Bounded Degree Spanning Trees
We consider the minimum cost spanning tree problem under the restriction that all degrees must be at most a given value k. We show that we can efficiently find a spanning tree o...
Michel X. Goemans
FOCS
2006
IEEE
16 years 1 months ago
Algorithms on negatively curved spaces
d abstract] Robert Krauthgamer ∗ IBM Almaden James R. Lee † Institute for Advanced Study We initiate the study of approximate algorithms on negatively curved spaces. These spa...
Robert Krauthgamer, James R. Lee