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COMPGEOM
2009
ACM
16 years 26 days ago
PTAS for geometric hitting set problems via local search
We consider the problem of computing minimum geometric hitting sets in which, given a set of geometric objects and a set of points, the goal is to compute the smallest subset of p...
Nabil H. Mustafa, Saurabh Ray
SIGECOM
2009
ACM
114views ECommerce» more  SIGECOM 2009»
16 years 25 days ago
Policy teaching through reward function learning
Policy teaching considers a Markov Decision Process setting in which an interested party aims to influence an agent’s decisions by providing limited incentives. In this paper, ...
Haoqi Zhang, David C. Parkes, Yiling Chen
SMA
2009
ACM
134views Solid Modeling» more  SMA 2009»
16 years 25 days ago
Exact Delaunay graph of smooth convex pseudo-circles: general predicates, and implementation for ellipses
We examine the problem of computing exactly the Delaunay graph (and the dual Voronoi diagram) of a set of, possibly intersecting, smooth convex pseudo-circles in the Euclidean pla...
Ioannis Z. Emiris, Elias P. Tsigaridas, George M. ...
FOCS
2008
IEEE
16 years 24 days ago
Two Query PCP with Sub-Constant Error
We show that the NP-Complete language 3SAT has a PCP verifier that makes two queries to a proof of almost-linear size and achieves sub-constant probability of error o(1). The ver...
Dana Moshkovitz, Ran Raz
INFOCOM
2008
IEEE
16 years 22 days ago
Information Concealing Games
— Consider the situation in which a decision maker (Actor) has to decide which of several available resources to use in the presence of an adversary (called Controller) that can ...
Saswati Sarkar, Eitan Altman, Rachid El Azouzi, Ye...