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SIGIR
2008
ACM
15 years 4 months ago
Directly optimizing evaluation measures in learning to rank
One of the central issues in learning to rank for information retrieval is to develop algorithms that construct ranking models by directly optimizing evaluation measures used in i...
Jun Xu, Tie-Yan Liu, Min Lu, Hang Li, Wei-Ying Ma
ICMCS
2008
IEEE
151views Multimedia» more  ICMCS 2008»
15 years 11 months ago
Fast keyword detection with sparse time-frequency models
We address the problem of keyword spotting in continuous speech streams when training and testing conditions can be different. We propose a keyword spotting algorithm based on spa...
Effrosini Kokiopoulou, Pascal Frossard, Olivier Ve...
PCM
2004
Springer
135views Multimedia» more  PCM 2004»
15 years 10 months ago
Probabilistic Face Tracking Using Boosted Multi-view Detector
Face tracking in realistic environments is a difficult problem due to pose variations, occlusions of objects, illumination changes and cluttered background, among others. The paper...
Peihua Li, Haijing Wang
PCM
2001
Springer
133views Multimedia» more  PCM 2001»
15 years 9 months ago
Compressed Domain Summarization of Digital Video
Video data is usually voluminous and it is desirable that one be able to get a quick idea of the content before actually watching a video or downloading it from the web. In this pa...
Chorng-Meng Chew, Mohan S. Kankanhalli
ICMCS
2000
IEEE
98views Multimedia» more  ICMCS 2000»
15 years 9 months ago
Automatic Image Event Segmentation and Quality Screening for Albuming Applications
In this paper, a system for automatic albuming of consumer photographs is described, and its specific core components of event segmentation and screening of low quality images are...
Alexander C. Loui, Andreas E. Savakis