Markov gated experts for time series analysis: beyond regression

Most traditional time series models are based on local methods (in time), which means assuming that the time series can be fully and locally (in time) characterized with a finite embedding space. There are many situations in which simple regression can not help find the temporal structural in time s...

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Bibliographic Details
Main Authors: Shi, S., Weigend, A.S.
Format: Conference Proceeding
Language:English
Subjects:
Analytical models
Computer architecture
Computer science
Feedforward neural networks
Information systems
Marine vehicles
Neural networks
Predictive models
State estimation
Time series analysis
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Summary:Most traditional time series models are based on local methods (in time), which means assuming that the time series can be fully and locally (in time) characterized with a finite embedding space. There are many situations in which simple regression can not help find the temporal structural in time series. In this research, a Markovian architecture, Markov gated experts, has been developed based on nonlinearly gated experts. This paper discusses the statistical framework and compares the performance of Markov gated experts to gated experts on both computer generated time series and real world data. Compared with the original method, Markov gated experts are more powerful in finding the underlying temporal structure, and are therefore a more powerful analytical and forecasting model for nonstationary and structurally changing time series.
DOI:10.1109/ICNN.1997.614215