Journal of Biometrics & Biostatistics

Mickael Guedj

Publications

• Review Article
  A Comparison of Six Methods for Missing Data Imputation
  Author(s): Peter Schmitt, Jonas Mandel and Mickael GuedjPeter Schmitt, Jonas Mandel and Mickael Guedj
  
  Missing data are part of almost all research and introduce an element of ambiguity into data analysis. It follows that we need to consider them appropriately in order to provide an efficient and valid analysis. In the present study, we compare 6 different imputation methods: Mean, K-nearest neighbors (KNN), fuzzy K-means (FKM), singular value decomposition (SVD), bayesian principal component analysis (bPCA) and multiple imputations by chained equations (MICE). Comparison was performed on four real datasets of various sizes (from 4 to 65 variables), under a missing completely at random (MCAR) assumption, and based on four evaluation criteria: Root mean squared error (RMSE), unsupervised classification error (UCE), supervised classification error (SCE) and execution time. Our results suggest that bPCA and FKM are two imputation methods of interest which deserve further consideration in .. Read More»
  DOI: 10.4172/2155-6180.1000224

  Abstract PDF