An augmented Wavelet De-noising Technique with Neuro-Fuzzy Inference System for water quality prediction

Ali Najah Ahmed, Ahmed El-Shafie, Othman A. Karim, Amr El-Shafie

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Johor River Basin is located in Johor state, Malaysia, which is significantly degrading due to human activities and development along the river. Accordingly, it is very important to implement and adopt a water quality prediction model that can provide a powerful tool to implement better water resource management. Several modeling methods have been applied to this research including: Multi Layer Perceptron Neural Networks (MLP-ANN), Radial Basis Function Neural Networks (RBF-ANN) and Adaptive Neuro-Fuzzy Inference System (ANFIS). Nevertheless, the data arising from monitoring stations and experiment may be polluted by noise signals owing to systematic errors and random errors. This noisy data often make the predict task relatively difficult. Therefore, this study suggests an augmented Wavelet De-noising Technique with Neuro-Fuzzy Inference System (WDT-ANFIS). In this study, the water quality parameters in the domain of interests are dissolved oxygen (DO), biochemical oxygen demand (BOD), chemical oxygen demand (COD). Two scenarios were introduced: Scenario 1 was to construct prediction model for water quality parameters at each station, while Scenario 2 was to construct prediction model based on the value of same parameter at previous station (upstream), and both were based on the value of the twelve input parameters. The WDT-ANFIS was verified based on field data from 2009-2010. The WDT-ANFIS model outperformed all the proposed models and improved predicting accuracy for all water quality parameters. Scenario 2 performed more adequately than Scenario 1 with significant improvement ranging from 0.5% to 3.1% for all water quality parameters at all stations. The verification of the proposed model showed that the model satisfactorily predicted all the parameters (R 2 values bigger than 0.9). ICIC International

Original languageEnglish
Pages (from-to)7055-7082
Number of pages28
JournalInternational Journal of Innovative Computing, Information and Control
Volume8
Issue number10 B
Publication statusPublished - 01 Oct 2012
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Software
  • Theoretical Computer Science
  • Information Systems
  • Computational Theory and Mathematics

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