Adaptive Algorithm for Blind Separation from Noisy Time-Varying Mixtures
Neural Computation
Building Blocks for Variational Bayesian Learning of Latent Variable Models
The Journal of Machine Learning Research
Long-Term prediction of time series using state-space models
ICANN'06 Proceedings of the 16th international conference on Artificial Neural Networks - Volume Part II
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Nonlinear source separation can be performed by inferring the state of a nonlinear state-space model. We study and improve the inference algorithm in the variational Bayesian blind source separation model introduced by Valpola and Karhunen in 2002. As comparison methods we use extensions of the Kalman filter that are widely used inference methods in tracking and control theory. The results in stability, speed, and accuracy favour our method especially in difficult inference problems.