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JMIV
2006
166views more  JMIV 2006»
14 years 9 months ago
Fast Surface Segmentation Guided by User Input Using Implicit Extension of Minimal Paths
We introduce a novel implicit approach for single object segmentation in 3D images. The boundary surface of this object is assumed to contain two or more known curves (the constrai...
Roberto Ardon, Laurent D. Cohen, Anthony J. Yezzi
MP
1998
108views more  MP 1998»
14 years 9 months ago
Base polytopes of series-parallel posets: Linear description and optimization
We define the base polytope B(P, g) of a partially ordered set P and a supermodular function g on the ideals ofP as the convex hull of the incidence vectors of all linear extensio...
Rainer Schrader, Andreas S. Schulz, Georg Wambach
PVLDB
2010
84views more  PVLDB 2010»
14 years 8 months ago
Processing Top-k Join Queries
We consider the problem of efficiently finding the top-k answers for join queries over web-accessible databases. Classical algorithms for finding top-k answers use branch-and-b...
Minji Wu, Laure Berti-Equille, Amélie Maria...
GLOBECOM
2010
IEEE
14 years 7 months ago
Providing Secrecy Irrespective of Eavesdropper's Channel State
A usual concern against physical layer security is that the legitimate parties would need to have (partial) channel state information (CSI) of the eavesdropper in order to design t...
Xiang He, Aylin Yener
ICDM
2009
IEEE
138views Data Mining» more  ICDM 2009»
14 years 7 months ago
Accurate Discovery of Valid Convoys from Moving Object Trajectories
Given a set of moving object trajectories, it is of interest to find a group of objects, called a convoy, that are spatially density-connected for a certain duration of time. Howev...
Hyunjin Yoon, Cyrus Shahabi