SCOLS-FuM: A Hybrid Fuzzy Modeling Method for Telecommunications Time-Series Forecasting

Article type: Research Article

Authors: Mastorocostas, Paris A.^; | Hilas, Constantinos S.

Affiliations: Department of Informatics and Communications, Technological Educational Institute of Serres, 62124 Serres, Greece, e-mail: mast@teiser.gr, chilas@teiser.gr

Note: [] Corresponding author.

Abstract: An application of fuzzy modeling to the problem of telecommunications time-series prediction is proposed in this paper. The model building process is a two-stage sequential algorithm, based on Subtractive Clustering (SC) and the Orthogonal Least Squares (OLS) techniques. Particularly, the SC is first employed to partition the input space and determine the number of fuzzy rules and the premise parameters. In the sequel, an orthogonal estimator determines the input terms which should be included in the consequent part of each fuzzy rule and calculate their parameters. A comparative analysis with well-established forecasting models is conducted on real world telecommunications data, where the characteristics of the proposed forecaster are highlighted.

Keywords: telecommunications data forecasting, fuzzy modeling, subtractive clustering, orthogonal least squares

Journal: Informatica, vol. 25, no. 2, pp. 221-239, 2014