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      https://www.ias.ac.in/article/fulltext/sadh/041/08/0825-0836

    • Keywords

       

      Non-ignorable missing data; Bayesian techniques; genetic algorithm; Bayesian genetic algorithm; continuous attributes; discrete attributes

    • Abstract

       

      Surveys are mainly conducted to obtain valuable information on some criteria from a specified population. But, the survey results often become biased due to non-response of the subjects under study for highly significant attributes. Such non-ignorable missingness need to be treated and the actual values should beretrieved. Many methods have already been proposed for handling missing values in either discrete or continuous attributes. But, there exists a large gap in handling non-ignorable missing values in datasets with mixed attributes. With the intent of addressing this gap, this paper proposes a methodology called as Bayesian Genetic Algorithm (BAGEL) with hybridized Bayesian and Genetic Algorithm principles. In BAGEL, the initial population is generated using Bayesian model and fitness values of the chromosomes are evaluated using Bayesian principles. BAGEL is implemented in real datasets for imputing both discrete and continuous missing values and the imputation accuracy is observed. The experimental results show the superior performance of BAGEL than other standard imputation techniques. Statistical tests conducted to validate the experimental results also prove that BAGEL outperforms at all missing rates from 5% to 50%

    • Author Affiliations

       

      R DEVI PRIYA1 S KUPPUSWAMI2 R SIVARAJ3

      1. Department of Information Technology, Kongu Engineering College, Erode, Tamil Nadu 638 052, India
      2. Department of Computer Science and Engineering, Kongu Engineering College, Erode, Tamil Nadu 638 052, India
      3. Department of Computer Science and Engineering, Velalar College of Engineering and Technology, Erode, Tamil Nadu 638 012, India
    • Dates

       
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