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APPROX
2008
Springer
137views Algorithms» more  APPROX 2008»
13 years 9 months ago
Approximating Directed Weighted-Degree Constrained Networks
Given a graph H = (V, F) with edge weights {w(e) : e F}, the weighted degree of a node v in H is {w(vu) : vu F}. We give bicriteria approximation algorithms for problems that see...
Zeev Nutov
DAM
2000
126views more  DAM 2000»
13 years 7 months ago
2-Medians in trees with pos/neg weights
This paper deals with facility location problems with pos=neg weights in trees. We consider two di erent objective functions which model two di erent ways to handle obnoxious faci...
Rainer E. Burkard, Eranda Çela, Helidon Dol...
SAT
2005
Springer
95views Hardware» more  SAT 2005»
14 years 1 months ago
Random Walk with Continuously Smoothed Variable Weights
Many current local search algorithms for SAT fall into one of two classes. Random walk algorithms such as Walksat/SKC, Novelty+ and HWSAT are very successful but can be trapped for...
Steven David Prestwich
AAIM
2008
Springer
208views Algorithms» more  AAIM 2008»
13 years 9 months ago
Large-Scale Parallel Collaborative Filtering for the Netflix Prize
Many recommendation systems suggest items to users by utilizing the techniques of collaborative filtering (CF) based on historical records of items that the users have viewed, purc...
Yunhong Zhou, Dennis M. Wilkinson, Robert Schreibe...
JCC
2008
92views more  JCC 2008»
13 years 7 months ago
Two-electron integral evaluation on the graphics processor unit
: We propose the algorithm to evaluate the Coulomb potential in the ab initio density functional calculation on the graphics processor unit (GPU). The numerical accuracy required f...
Koji Yasuda