We present a new method for nonlinear prediction of discrete random sequences under minimal structural assumptions. We give a mathematical construction for optimal predictors of such processes, in the form of hidden Markov models. We then describe an algorithm, CSSR (Causal-State Splitting Reconstruction), which approximates the ideal predictor from data. We discuss the reliability of CSSR, its data requirements, and its performance in simulations. Finally, we compare our approach to existing methods using variable-length Markov models and cross-validated hidden Markov models, and show theoretically and experimentally that our method delivers results superior to the former and at least comparable to the latter.
Blind Construction of Optimal Nonlinear Recursive Predictors for Discrete Sequences
C. Shalizi,Kristina Lisa Shalizi
Published 2004 in Conference on Uncertainty in Artificial Intelligence
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- Publication year
2004
- Venue
Conference on Uncertainty in Artificial Intelligence
- Publication date
2004-06-06
- Fields of study
Mathematics, Physics, Computer Science
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