Analysis of the Nearest Neighbor Classifiers: A Review

We are living in a data age and with the expansion of ‘Internet of Things’ platform, there is an upsurge in devices connected to the Internet. Everything from smart sensors to smartphones and tablets, systems installed in manufacturing units, hospitals, vehicles, etc. is generating data. Such developments in the technological world have escalated the generation of data and require an analysis to be performed on the raw data to identify patterns. The data mining techniques are deployed extensively to extract information and they yield far-reaching effects on the trade and the lives of the people concerned. The accuracy and effectiveness of data mining techniques in providing better outcomes and cost-effective methods in various domains have been established. Usually, in supervised learning, density estimation is used by instance-based learning classifiers like k-nearest neighbor (kNN). In this paper, the regular kNN classifier is compared with the various classifiers conceptually and the ARSkNN that uses mass estimation has been proved to be commensurate to kNN in accuracy and has reduced computation time drastically on datasets chosen for this analysis. Tenfold cross-validation is used for testing.