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WIOPT
2011
IEEE
14 years 10 months ago
LIFO-Backpressure achieves near optimal utility-delay tradeoff
There has been considerable recent work developing a new stochastic network utility maximization framework using Backpressure algorithms, also known as MaxWeight. A key open probl...
Longbo Huang, Scott Moeller, Michael J. Neely, Bha...
CHI
2011
ACM
14 years 10 months ago
The impact of network structure on breaking ties in online social networks: unfollowing on twitter
We investigate the breaking of ties between individuals in the online social network of Twitter, a hugely popular social media service. Building on sociology concepts such as stre...
Funda Kivran-Swaine, Priya Govindan, Mor Naaman
COMPGEOM
2011
ACM
14 years 10 months ago
Compressive sensing with local geometric features
We propose a framework for compressive sensing of images with local geometric features. Specifically, let x ∈ RN be an N-pixel image, where each pixel p has value xp. The image...
Rishi Gupta, Piotr Indyk, Eric Price, Yaron Rachli...
ICUIMC
2011
ACM
14 years 10 months ago
Overhead analysis of query localization optimization and routing
Query localization is an improved extension of on-demand routing protocols for ad hoc networks. It makes use of prior routing histories to localize the query flood to a limited re...
Wenzheng Xu, Yongmin Zhang, Weifa Liang
ACII
2011
Springer
14 years 6 months ago
A Psychologically-Inspired Match-Score Fusion Model for Video-Based Facial Expression Recognition
Communication between humans is rich in complexity and is not limited to verbal signals; emotions are conveyed with gesture, pose and facial expression. Facial Emotion Recognition ...
Albert Cruz, Bir Bhanu, Songfan Yang