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JACM
2007
115views more  JACM 2007»
14 years 9 months ago
Optimal pants decompositions and shortest homotopic cycles on an orientable surface
We consider the problem of finding a shortest cycle (freely) homotopic to a given simple cycle on a compact, orientable surface. For this purpose, we use a pants decomposition of...
Éric Colin de Verdière, Francis Laza...
PPOPP
2005
ACM
15 years 3 months ago
A linear-time algorithm for optimal barrier placement
We want to perform compile-time analysis of an SPMD program and place barriers in it to synchronize it correctly, minimizing the runtime cost of the synchronization. This is the b...
Alain Darte, Robert Schreiber
DASFAA
2007
IEEE
172views Database» more  DASFAA 2007»
15 years 4 months ago
Optimizing Multiple In-Network Aggregate Queries in Wireless Sensor Networks
Abstract. In this paper, we explore the feature of sharing partial results of multiple queries to reduce the total number of messages incurred. Those queries sharing their partial ...
Huei-You Yang, Wen-Chih Peng, Chia-Hao Lo
JMIV
2006
161views more  JMIV 2006»
14 years 9 months ago
Image Restoration with Discrete Constrained Total Variation Part I: Fast and Exact Optimization
This paper deals with the total variation minimization problem in image restoration for convex data fidelityfunctionals.Weproposeanewandfastalgorithmwhichcomputesanexactsolutionint...
Jérôme Darbon, Marc Sigelle
CORR
2007
Springer
128views Education» more  CORR 2007»
14 years 9 months ago
Equivalence of LP Relaxation and Max-Product for Weighted Matching in General Graphs
— Max-product belief propagation is a local, iterative algorithm to find the mode/MAP estimate of a probability distribution. While it has been successfully employed in a wide v...
Sujay Sanghavi