Practical methods of tracking of nonstationary time series applied to real-world data

Research output: Chapter in Book/Report/Conference proceedingConference contribution

View graph of relations Save citation

Open

Authors

Research units

Abstract

In this paper, we discuss some practical implications for implementing adaptable network algorithms applied to non-stationary time series problems. Two real world data sets, containing electricity load demands and foreign exchange market prices, are used to test several different methods, ranging from linear models with fixed parameters, to non-linear models which adapt both parameters and model order on-line. Training with the extended Kalman filter, we demonstrate that the dynamic model-order increment procedure of the resource allocating RBF network (RAN) is highly sensitive to the parameters of the novelty criterion. We investigate the use of system noise for increasing the plasticity of the Kalman filter training algorithm, and discuss the consequences for on-line model order selection. The results of our experiments show that there are advantages to be gained in tracking real world non-stationary data through the use of more complex adaptive models.

Documents

  • Practical methods of tracking of non-stationary time series

    Rights statement: Ian T. Nabney ; Alan McLachlan and David Lowe, "Practical methods of tracking of nonstationary time series applied to real-world data", Proc. SPIE 2760, Applications and Science of Artificial Neural Networks II, 152 (March 22, 1996); doi:10.1117/12.235906. Copyright 1996 Society of Photo-Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited. http://dx.doi.org/10.1117/12.235906

    Final published version, 599 KB, PDF-document

Details

Publication date9 Apr 1996
Publication titleApplications and science of artificial neural networks II
EditorsS.K. Rogers, D.W. Ruck
PublisherSPIE
Pages152-163
Number of pages12
Volume2760
Original languageEnglish
EventAeroSense '96 : Applications and Science of Artificial Neural Networks II - Orlando, United States

Publication series

NameSPIE proceedings
PublisherSPIE
Volume2760
ISSN (Print)0277-786X

Conference

ConferenceAeroSense '96 : Applications and Science of Artificial Neural Networks II
CountryUnited States
CityOrlando
Period8/04/9612/04/96

Bibliographic note

Ian T. Nabney ; Alan McLachlan and David Lowe, "Practical methods of tracking of nonstationary time series applied to real-world data", Proc. SPIE 2760, Applications and Science of Artificial Neural Networks II, 152 (March 22, 1996); doi:10.1117/12.235906. Copyright 1996 Society of Photo-Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited. http://dx.doi.org/10.1117/12.235906

    Keywords

  • RBF network, RAN, noise, plasticity, Kalman filter, training algorithm, tracking, real world non-stationary, complex adaptive models

DOI

Download statistics

No data available

Employable Graduates; Exploitable Research

Copy the text from this field...