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  3. Dealing with Missing Data in Python

Exercise

KNN imputation

Datasets always have features which are correlated. Hence, it becomes important to consider them as a factor for imputing missing values. Machine learning models use features in the DataFrame to find correlations and patterns and predict a selected feature.

One of the simplest and most efficient models is the K Nearest Neighbors. It finds 'K' points most similar to the existing data points to impute missing values.

In this exercise, the diabetes DataFrame has already been loaded for you. Use the fancyimpute package to impute the missing values in the diabetes DataFrame.

Instructions

100 XP
  • Import KNN from fancyimpute.
  • Copy diabetes to diabetes_knn_imputed.
  • Create a KNN() object and assign it to knn_imputer.
  • Impute the diabetes_knn_imputed DataFrame.