Interval type 2 fuzzy logic for significant wave height forecasting

• Published in: 2012 12th International Conference on Intelligent Systems Design and Applications (ISDA) pp. 794 - 798
• Main Authors: Hashim, M. A., Jaafar, J., Taib, S. M.
• Format: Conference Proceeding
• Language: English
• Published: IEEE 01-11-2012
• Subjects: Decision support systems; forecasting; hindcasting; Intelligent systems; Significant wave height; subtractive clustering; type-2 fuzzy
• ISBN: 9781467351171; 1467351172
• ISSN: 2164-7143; 2164-7151
• DOI: 10.1109/ISDA.2012.6416638

These days, fuzzy logic system has widely been applied in many applications, including wave forecasting. In current fuzzy logic development, researchers have started to use interval type 2 fuzzy as a solution to solve the uncertainties problem. The aim of this research is to propose a method to forecast significant wave height by using interval type 2 fuzzy logic. As part of the research, this paper focuses on two objectives; to extend type-1 fuzzy to type-2 fuzzy by assigning uncertainty to its type 1 counterpart and to predict significant wave height for 1 hour, 3 hours, 6 hours, 12 hours and 24 hours lead time. The root mean square error (RMSE) has been used to score the performance of both type 1 and type 2 fuzzy methods. The best result has shown at 6 hours lead time with RMSE of 0.1529.