Please use this identifier to cite or link to this item: http://hdl.handle.net/10419/72486
Authors: 
Kajornrit, Jesada
Wong, Kok Wai
Fung, Chun Che
Year of Publication: 
2012
Series/Report no.: 
19th ITS Biennial Conference 2012, Bangkok, Thailand, 18 - 21 November 2012: Moving Forward with Future Technologies: Opening a Platform for All
Abstract: 
Estimation of missing precipitation records is one of the most important tasks in hydro-logical and environmental study. The efficiency of hydrological and environmental models is sub-ject to the completeness of precipitation data. This study compared some basic soft computing techniques, namely, artificial neural network, fuzzy inference system and adaptive neuro-fuzzy in-ference system as well as the conventional methods to estimate missing monthly rainfall records in the northeast region of Thailand. Four cases studies are selected to evaluate the accuracy of the es-timation models. The simultaneous rainfall data from three nearest neighbouring control stations are used to estimate missing records at the target station. The experimental results suggested that the adaptive neuro-fuzzy inference system could be considered as a recommended technique because it provided the promising estimation results, the estimation mechanism is transparent to the users, and do not need prior knowledge to create the model. The results also showed that fuzzy inference system could provide compatible accuracy to artificial neural network.In addition, artificial neural network must be used with care becausesuch model is sensitive to irregular rainfall events.
Subjects: 
Missing Precipitation Records
Artificial Neural Network
Fuzzy Inference System
Adaptive Neuro-Fuzzy Inference System
Northeast Region of Thailand
Document Type: 
Conference Paper

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