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AAAI
2011
12 years 9 months ago
A Feasible Nonconvex Relaxation Approach to Feature Selection
Variable selection problems are typically addressed under a penalized optimization framework. Nonconvex penalties such as the minimax concave plus (MCP) and smoothly clipped absol...
Cuixia Gao, Naiyan Wang, Qi Yu, Zhihua Zhang
DOCENG
2003
ACM
14 years 2 months ago
Improving formatting documents by coupling formatting systems
In this paper, we present a framework for coupling an existing formatting system such as SMIL [7] and Madeus [13] with a formatting control system XEF [10]. This framework allows ...
Fateh Boulmaiz, Cécile Roisin, Fréd&...
WOWMOM
2009
ACM
124views Multimedia» more  WOWMOM 2009»
14 years 3 months ago
VAPS: Positioning with spatial constraints
The proliferation of mobile computing devices and local wireless networks has promoted a growing interest in location-aware systems. The problem with existing positioning techniqu...
Yesid Jarma, Golnaz Karbaschi, Marcelo Dias de Amo...
ICMCS
2008
IEEE
115views Multimedia» more  ICMCS 2008»
14 years 3 months ago
On the biased estimation of nonlocal means filter
The recent Nonlocal Means filter (NLM) exhibits exciting performance for image or video denoising. However, the estimation of NLM is biased and tends to keep the value of noise. I...
Hao Xu, Jizheng Xu, Feng Wu
MUE
2007
IEEE
128views Multimedia» more  MUE 2007»
14 years 3 months ago
Designing, Developing, and Evaluating Context-Aware Systems
Context and context-awareness have been central issues in ubiquitous computing research for the last decade. Advances with regard to context acquisition and activity recognition a...
Yoosoo Oh, Albrecht Schmidt, Woontack Woo