A New Classwise k Nearest Neighbor (CKNN) Method for the Classification of Diabetes Dataset

The general problem for data quality is missing data. The real datasets have lot of missing values. Mean method of imputation is the most common method to replace the missing values. In our previous work [23], we address the negative impact of missing value imputation and solution for improvement while evaluating the performance of kNN algorithm for classification of Diabetes data. In this paper, we address a new Class-wise k Nearest Neighbor (CkNN) method for the Classification of Diabetes Dataset. We selected diabetes dataset because it contains lot of missing values and the impact of imputation is very obvious. To measure the performance, we used Accuracy, Sensitivity and Specificity and Error rate as the metrics. The arrived results show the significant improvement measured with respect to the above metrics.