A simple randomized algorithm for sequential prediction of ergodic time series

Details A simple randomized algorithm for sequential prediction of ergodic time series A simple randomized algorithm for sequential prediction of ergodic time series

2008-05-20

arxiv.org/abs/0805.3091v1

IEEE Trans. Inform. Theory 45 (1999), no. 7, 2642--2650

Mathematics

Statistics Theory

Scientific paper

We present a simple randomized procedure for the prediction of a binary sequence. The algorithm uses ideas from recent developments of the theory of the prediction of individual sequences. We show that if the sequence is a realization of a stationary and ergodic random process then the average number of mistakes converges, almost surely, to that of the optimum, given by the Bayes predictor. The desirable finite-sample properties of the predictor are illustrated by its performance for Markov processes. In such cases the predictor exhibits near optimal behavior even without knowing the order of the Markov process. Prediction with side information is also considered.

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