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IR
2010
15 years 4 months ago
Gradient descent optimization of smoothed information retrieval metrics
Abstract Most ranking algorithms are based on the optimization of some loss functions, such as the pairwise loss. However, these loss functions are often different from the criter...
Olivier Chapelle, Mingrui Wu
INFOCOM
2010
IEEE
15 years 4 months ago
Low-complexity Scheduling Algorithms for Multi-channel Downlink Wireless Networks
—This paper considers the problem of designing scheduling algorithms for multi-channel (e.g., OFDM) wireless downlink networks with n users/OFDM sub-channels. For this system, wh...
Shreeshankar Bodas, Sanjay Shakkottai, Lei Ying, R...
ICASSP
2008
IEEE
16 years 25 days ago
Anti-jam distributed MIMO decoding using wireless sensor networks
Consider a set of sensors that wish to consent on the message broadcasted by a multi-antenna transmitter in the presence of white-noise jamming. The jammer’s interference introd...
Shahrokh Farahmand, Alfonso Cano, Georgios B. Gian...
3DIM
2003
IEEE
15 years 10 months ago
Approximate K-D Tree Search for Efficient ICP
A method is presented that uses an Approximate Nearest Neighbor method for determining correspondences within the Iterative Closest Point Algorithm. The method is based upon the k...
Michael A. Greenspan, Mike Yurick
ICASSP
2008
IEEE
16 years 25 days ago
Compressive wireless arrays for bearing estimation
Joint processing of sensor array outputs improves the performance of parameter estimation and hypothesis testing problems beyond the sum of the individual sensor processing result...
Volkan Cevher, Ali Cafer Gurbuz, James H. McClella...