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SODA
2010
ACM
214views Algorithms» more  SODA 2010»
14 years 5 months ago
Amplified Hardness of Approximation for VCG-Based Mechanisms
If a two-player social welfare maximization problem does not admit a PTAS, we prove that any maximal-in-range truthful mechanism that runs in polynomial time cannot achieve an app...
Shaddin Dughmi, Hu Fu, Robert Kleinberg
3DPVT
2004
IEEE
119views Visualization» more  3DPVT 2004»
14 years 7 days ago
The Influence of Shape on Image Correspondence
We examine the implications of shape on the process of finding dense correspondence and half-occlusions for a stereo pair of images. The desired property of the depth map is that ...
Abhijit S. Ogale, Yiannis Aloimonos
INFOCOM
2005
IEEE
14 years 2 months ago
Low-state fairness: lower bounds and practical enforcement
— Providing approximate max-min fair bandwidth allocation among flows within a network or at a single router has been an important research problem. In this paper, we study the ...
Abhimanyu Das, Debojyoti Dutta, Ahmed Helmy, Ashis...
CVPR
2010
IEEE
13 years 6 months ago
Efficient computation of robust low-rank matrix approximations in the presence of missing data using the L1 norm
The calculation of a low-rank approximation of a matrix is a fundamental operation in many computer vision applications. The workhorse of this class of problems has long been the ...
Anders Eriksson, Anton van den Hengel
ICDM
2008
IEEE
108views Data Mining» more  ICDM 2008»
14 years 2 months ago
Non-negative Matrix Factorization on Manifold
Recently Non-negative Matrix Factorization (NMF) has received a lot of attentions in information retrieval, computer vision and pattern recognition. NMF aims to find two non-nega...
Deng Cai, Xiaofei He, Xiaoyun Wu, Jiawei Han