Efficient clustering techniques on Hadoop and Spark Online publication date: Fri, 19-Jul-2019
by Sami Al Ghamdi; Giuseppe Di Fatta
International Journal of Big Data Intelligence (IJBDI), Vol. 6, No. 3/4, 2019
Abstract: Clustering is an essential data mining technique that divides observations into groups where each group contains similar observations. K-means is one of the most popular clustering algorithms that has been used for over 50 years. Due to the current exponential growth of the data, it became a necessity to improve the efficiency and scalability of K-means even further to cope with large-scale datasets known as big data. This paper presents K-means optimisations using triangle inequality on two well-known distributed computing platforms: Hadoop and Spark. K-means variants that use triangle inequality usually require caching extra information from the previous iteration, which is a challenging task to achieve on Hadoop. Hence, this work introduces two methods to pass information from one iteration to the next on Hadoop to accelerate K-means. The experimental work shows that the efficiency of K-means on Hadoop and Spark can be significantly improved by using triangle inequality optimisations.
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