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TSP
2010
14 years 4 months ago
On the shiftability of dual-tree complex wavelet transforms
The dual-tree complex wavelet transform (DT- WT) is known to exhibit better shift-invariance than the conventional discrete wavelet transform. We propose an amplitude-phase represe...
Kunal Narayan Chaudhury, Michael Unser
ICML
2003
IEEE
15 years 10 months ago
Hierarchical Policy Gradient Algorithms
Hierarchical reinforcement learning is a general framework which attempts to accelerate policy learning in large domains. On the other hand, policy gradient reinforcement learning...
Mohammad Ghavamzadeh, Sridhar Mahadevan
EUROSSC
2009
Springer
15 years 4 months ago
Automatic Event-Based Synchronization of Multimodal Data Streams from Wearable and Ambient Sensors
A major challenge in using multi-modal, distributed sensor systems for activity recognition is to maintain a temporal synchronization between individually recorded data streams. A ...
David Bannach, Oliver Amft, Paul Lukowicz
INTETAIN
2005
Springer
15 years 3 months ago
Ambient Intelligence in Edutainment: Tangible Interaction with Life-Like Exhibit Guides
We present COHIBIT, an edutainment exhibit for theme parks in an ambient intelligence environment. It combines ultimate robustness and simplicity with creativity and fun. The visit...
Alassane Ndiaye, Patrick Gebhard, Michael Kipp, Ma...
LAMAS
2005
Springer
15 years 3 months ago
The Success and Failure of Tag-Mediated Evolution of Cooperation
Use of tags to limit partner selection for playing has been shown to produce stable cooperation in agent populations playing the Prisoner’s Dilemma game. There is, however, a lac...
Austin McDonald, Sandip Sen