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Improved methods for the imputation of missing data by nearest neighbor methods

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  • Tutz, Gerhard
  • Ramzan, Shahla

Abstract

Missing data raise problems in almost all fields of quantitative research. A useful nonparametric procedure is the nearest neighbor imputation method. Improved versions of this method are presented. First, a weighted nearest neighbor imputation method based on Lq distances is proposed. It is demonstrated that the method tends to have a smaller imputation error than other nearest neighbor estimates. Then weighted nearest neighbor imputation methods that use distances for selected covariates are considered. The careful selection of distances that carry information about the missing values yields an imputation tool that can outperform competing nearest neighbor methods. This approach performs well, especially when the number of predictors is large. The methods are evaluated in simulation studies and with several real data sets from different fields.

Suggested Citation

  • Tutz, Gerhard & Ramzan, Shahla, 2015. "Improved methods for the imputation of missing data by nearest neighbor methods," Computational Statistics & Data Analysis, Elsevier, vol. 90(C), pages 84-99.
    • Handle: RePEc:eee:csdana:v:90:y:2015:i:c:p:84-99
    DOI: 10.1016/j.csda.2015.04.009
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    References listed on IDEAS

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    Cited by:

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    2. Marlene A. Perez-Villalpando & Kelly J. Gurubel Tun & Carlos A. Arellano-Muro & Fernando Fausto, 2021. "Inverse Optimal Control Using Metaheuristics of Hydropower Plant Model via Forecasting Based on the Feature Engineering," Energies, MDPI, vol. 14(21), pages 1-18, November.
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    4. Faisal Shahla & Tutz Gerhard, 2017. "Missing value imputation for gene expression data by tailored nearest neighbors," Statistical Applications in Genetics and Molecular Biology, De Gruyter, vol. 16(2), pages 95-106, April.

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