Application of Hybrid Evolutionary Algorithm and thematic map for rule set generation and visualization of chlorophyta abundance at Putrajaya lake / Lau Chia Fong

Lau, Chia Fong (2013) Application of Hybrid Evolutionary Algorithm and thematic map for rule set generation and visualization of chlorophyta abundance at Putrajaya lake / Lau Chia Fong. Masters thesis, University of Malaya.

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    Abstract

    This study describes application of a hybrid combination of hybrid evolutionary algorithm (HEA) and thematic map visualization technique in modeling, predicting and visualization of selected algae division growth, Chlorophyta for tropical Putrajaya Lakes and Wetlands (Malaysia). The system was trained and tested using five years of limnological time-series data sampled from tropical Putrajaya Lake and Wetlands (Malaysia). HEA is run on the training set in order to provide insights on the relationships between input variables and the algae abundance. Performances of the rule sets are assessed using Receiving Operating Characteristic (ROC) with true positive rate. The generated rules are tested with another set data to avoid biasness, which yielded accuracy rate of 73%. The rules generated by HEA are then integrated with thematic map technique for visualization of the Chlorophyta abundance. Input parameters are optimized using HEA to weed out insignificant input for predicting Chlorophyta abundance. The optimized variables are namely rainfall, wind speed, sunshine, temperature, pH, dissolved oxygen, Secchi, turbidity, conductivity, total phosphorus, ammonia (NH3-N), nitrate (NO3-N), biochemical oxygen demand, chemical oxygen demand and total suspended solids.

    Item Type: Thesis (Masters)
    Additional Information: Dissertation (M.Sc.) -- Institut Sains Biologi, Fakulti Sains, Universiti Malaya, 2013
    Uncontrolled Keywords: Hybrid Evolutionary Algorithm; Algorithms
    Subjects: Q Science > Q Science (General)
    Q Science > QH Natural history
    Divisions: Faculty of Science
    Depositing User: Mrs Nur Aqilah Paing
    Date Deposited: 03 Oct 2014 15:10
    Last Modified: 03 Oct 2014 15:10
    URI: http://studentsrepo.um.edu.my/id/eprint/4413

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