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» Similarity estimation techniques from rounding algorithms
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SIGIR
2009
ACM
14 years 2 months ago
An improved markov random field model for supporting verbose queries
Recent work in supervised learning of term-based retrieval models has shown significantly improved accuracy can often be achieved via better model estimation [2, 10, 11, 17]. In ...
Matthew Lease
STOC
2010
ACM
261views Algorithms» more  STOC 2010»
14 years 1 months ago
An Improved LP-based Approximation for Steiner Tree
The Steiner tree problem is one of the most fundamental ÆÈ-hard problems: given a weighted undirected graph and a subset of terminal nodes, find a minimum weight tree spanning ...
Jaroslaw Byrka, Fabrizio Grandoni, Thomas Rothvoss...
DAGSTUHL
1997
13 years 9 months ago
Ray-Based Data Level Comparisons of Direct Volume Rendering Algorithms
This paper describes and demonstrates the e ectiveness of several metrics for data level comparison of direct volume rendering (DVR) algorithms. The focus is not on speed ups from...
Kwansik Kim, Alex Pang
PAMI
2010
168views more  PAMI 2010»
13 years 6 months ago
Dynamic Hybrid Algorithms for MAP Inference in Discrete MRFs
—In this paper, we present novel techniques that improve the computational and memory efficiency of algorithms for solving multi-label energy functions arising from discrete MRF...
Karteek Alahari, Pushmeet Kohli, Philip H. S. Torr
CVPR
2005
IEEE
14 years 10 months ago
Coupled PDEs for Non-Rigid Registration and Segmentation
In this paper we present coupled partial differential equations (PDEs) for the problem of joint segmentation and registration. The registration component of the method estimates a...
Gozde B. Unal, Gregory G. Slabaugh