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SODA
2008
ACM
89views Algorithms» more  SODA 2008»
15 years 1 months ago
Earth mover distance over high-dimensional spaces
The Earth Mover Distance (EMD) between two equalsize sets of points in Rd is defined to be the minimum cost of a bipartite matching between the two pointsets. It is a natural metr...
Alexandr Andoni, Piotr Indyk, Robert Krauthgamer
SIGECOM
2008
ACM
152views ECommerce» more  SIGECOM 2008»
14 years 11 months ago
On characterizations of truthful mechanisms for combinatorial auctions and scheduling
We characterize truthful mechanisms in two multi-parameter domains. The first characterization shows that every mechanism for combinatorial auctions with two subadditive bidders t...
Shahar Dobzinski, Mukund Sundararajan
PAMI
1998
76views more  PAMI 1998»
14 years 11 months ago
Segmenting Images Corrupted by Correlated Noise
—Image segmentation is fundamental to many image analysis problems. It aims to partition a digital image into a set of nonoverlapping homogeneous regions. The main contribution o...
Thomas C. M. Lee
STOC
2006
ACM
170views Algorithms» more  STOC 2006»
16 years 4 days ago
Hardness of approximate two-level logic minimization and PAC learning with membership queries
Producing a small DNF expression consistent with given data is a classical problem in computer science that occurs in a number of forms and has numerous applications. We consider ...
Vitaly Feldman
KDD
2009
ACM
223views Data Mining» more  KDD 2009»
16 years 11 days ago
Collaborative filtering with temporal dynamics
Customer preferences for products are drifting over time. Product perception and popularity are constantly changing as new selection emerges. Similarly, customer inclinations are ...
Yehuda Koren