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ICML
2008
IEEE
16 years 6 months ago
Dirichlet component analysis: feature extraction for compositional data
We consider feature extraction (dimensionality reduction) for compositional data, where the data vectors are constrained to be positive and constant-sum. In real-world problems, t...
Hua-Yan Wang, Qiang Yang, Hong Qin, Hongbin Zha
PADL
2010
Springer
16 years 2 months ago
Automating Mathematical Program Transformations
Abstract. Mathematical programs (MPs) are a class of constrained optimization problems that include linear, mixed-integer, and disjunctive programs. Strategies for solving MPs rely...
Ashish Agarwal, Sooraj Bhat, Alexander Gray, Ignac...
ICC
2009
IEEE
144views Communications» more  ICC 2009»
16 years 19 days ago
Power Allocation for Multi-Access Two-Way Relaying
—We consider a multi-access two-way relay network where multiple pairs of users exchange information with their pre-assigned partners with the assistance of an intermediate relay...
Min Chen, Aylin Yener
VLSM
2005
Springer
15 years 11 months ago
Entropy Controlled Gauss-Markov Random Measure Field Models for Early Vision
We present a computationally efficient segmentationrestoration method, based on a probabilistic formulation, for the joint estimation of the label map (segmentation) and the para...
Mariano Rivera, Omar Ocegueda, José L. Marr...
SIGGRAPH
1992
ACM
15 years 10 months ago
Variational surface modeling
We present a new approachto interactive modeling of freeform surfaces. Instead of a fixed mesh of control points, the model presented to the user is that of an infinitely malleabl...
William Welch, Andrew P. Witkin