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ATAL
2006
Springer
15 years 8 months ago
A hierarchical approach to efficient reinforcement learning in deterministic domains
Factored representations, model-based learning, and hierarchies are well-studied techniques for improving the learning efficiency of reinforcement-learning algorithms in large-sca...
Carlos Diuk, Alexander L. Strehl, Michael L. Littm...
FS
2010
95views more  FS 2010»
15 years 3 months ago
Pricing credit derivatives under incomplete information: a nonlinear-filtering approach
This paper considers a general reduced form pricing model for credit derivatives where default intensities are driven by some factor process X. The process X is not directly observ...
Rüdiger Frey, Wolfgang Runggaldier
TMC
2008
146views more  TMC 2008»
15 years 4 months ago
General Network Lifetime and Cost Models for Evaluating Sensor Network Deployment Strategies
In multihop wireless sensor networks that are often characterized by many-to-one (convergecast) traffic patterns, problems related to energy imbalance among sensors often appear. S...
Zhao Cheng, Mark A. Perillo, Wendi B. Heinzelman
CVPR
2008
IEEE
16 years 7 months ago
Spatio-temporal Saliency detection using phase spectrum of quaternion fourier transform
Salient areas in natural scenes are generally regarded as the candidates of attention focus in human eyes, which is the key stage in object detection. In computer vision, many mod...
Chenlei Guo, Qi Ma, Liming Zhang
143
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INTERACT
2003
15 years 6 months ago
Real Time Head Gesture Recognition in Affective Interfaces
: In this paper we present the affective message box, a dialog box that employs a real time head gesture recognition system as its input modality. Head nods and shakes correspond t...
Rana El Kaliouby, Peter Robinson