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FOCS
2009
IEEE
16 years 1 months ago
Regularity Lemmas and Combinatorial Algorithms
— We present new combinatorial algorithms for Boolean matrix multiplication (BMM) and preprocessing a graph to answer independent set queries. We give the first asymptotic impro...
Nikhil Bansal, Ryan Williams
FOCS
2009
IEEE
16 years 1 months ago
Local Graph Partitions for Approximation and Testing
—We introduce a new tool for approximation and testing algorithms called partitioning oracles. We develop methods for constructing them for any class of bounded-degree graphs wit...
Avinatan Hassidim, Jonathan A. Kelner, Huy N. Nguy...
ASIACRYPT
2009
Springer
16 years 26 days ago
On Black-Box Constructions of Predicate Encryption from Trapdoor Permutations
Abstract. Predicate encryption is a recent generalization of identitybased encryption (IBE), broadcast encryption, attribute-based encryption, and more. A natural question is wheth...
Jonathan Katz, Arkady Yerukhimovich
154
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ISAAC
2009
Springer
132views Algorithms» more  ISAAC 2009»
16 years 25 days ago
Untangled Monotonic Chains and Adaptive Range Search
Abstract. We present the first adaptive data structure for two-dimensional orthogonal range search. Our data structure is adaptive in the sense that it gives improved search perfo...
Diego Arroyuelo, Francisco Claude, Reza Dorrigiv, ...
SSD
2009
Springer
142views Database» more  SSD 2009»
16 years 24 days ago
Monitoring Orientation of Moving Objects around Focal Points
Abstract. We consider a setting with numerous location-aware moving objects that communicate with a central server. Assuming a set of focal points of interest, we aim at continuous...
Kostas Patroumpas, Timos K. Sellis