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- research-articleNovember 2015
Mobility episode detection from CDR's data using switching Kalman filter
MobiGIS '15: Proceedings of the Fourth ACM SIGSPATIAL International Workshop on Mobile Geographic Information SystemsPages 63–69https://doi.org/10.1145/2834126.2834139The detection of stay-jump-and-moving movement episodes using only cellular data is a big challenge due to the nature of the data. In this article, we propose a method to automatically detect the movement episodes (stay-jump-and-moving) from sparsely ...
- ArticleDecember 2012
Knowledge-Driven Autonomous Commodity Trading Advisor
WI-IAT '12: Proceedings of the The 2012 IEEE/WIC/ACM International Joint Conferences on Web Intelligence and Intelligent Agent Technology - Volume 02Pages 119–125https://doi.org/10.1109/WI-IAT.2012.208The myth that financial trading is an art has been mostly destroyed in the recent decade due to the proliferation of algorithmic trading. In equity markets, algorithmic trading has already bypass human traders in terms of traded volume. This trend seems ...
- research-articleSeptember 2009
Factorial Switching Linear Dynamical Systems Applied to Physiological Condition Monitoring
IEEE Transactions on Pattern Analysis and Machine Intelligence (ITPM), Volume 31, Issue 9Pages 1537–1551https://doi.org/10.1109/TPAMI.2008.191Condition monitoring often involves the analysis of systems with hidden factors that switch between different modes of operation in some way. Given a sequence of observations, the task is to infer the filtering distribution of the switch setting at each ...
- articleMarch 2008
Noise Robust Voice Activity Detection Based on Switching Kalman Filter
IEICE - Transactions on Information and Systems (TROIS), Volume E91-D, Issue 3Pages 467–477https://doi.org/10.1093/ietisy/e91-d.3.467This paper addresses the problem of voice activity detection (VAD) in noisy environments. The VAD method proposed in this paper is based on a statistical model approach, and estimates statistical models sequentially without a priori knowledge of noise. ...
- articleNovember 2007
Conditionally heteroscedastic factorial HMMs for time series in finance
In this article, we develop a new approach within the framework of asset pricing models that incorporates two key features of the latent volatility: co-movement among conditionally heteroscedastic financial returns and switching between different ...