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Informatics 2017, 4(3), 24;

Big Data Management with Incremental K-Means Trees–GPU-Accelerated Construction and Visualization

Visual Analytics and Imaging Lab, Computer Science Department, Stony Brook University, Stony Brook, NY 11794, USA
Chemical and Material Sciences Division, Pacific Northwest National Laboratory, Richland, WA 99352, USA
Imre Consulting, Richland, WA 99352, USA
Author to whom correspondence should be addressed.
Academic Editors: Achim Ebert and Gunther H. Weber
Received: 1 June 2017 / Revised: 25 July 2017 / Accepted: 26 July 2017 / Published: 28 July 2017
(This article belongs to the Special Issue Scalable Interactive Visualization)
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While big data is revolutionizing scientific research, the tasks of data management and analytics are becoming more challenging than ever. One way to remit the difficulty is to obtain the multilevel hierarchy embedded in the data. Knowing the hierarchy enables not only the revelation of the nature of the data, it is also often the first step in big data analytics. However, current algorithms for learning the hierarchy are typically not scalable to large volumes of data with high dimensionality. To tackle this challenge, in this paper, we propose a new scalable approach for constructing the tree structure from data. Our method builds the tree in a bottom-up manner, with adapted incremental k-means. By referencing the distribution of point distances, one can flexibly control the height of the tree and the branching of each node. Dimension reduction is also conducted as a pre-process, to further boost the computing efficiency. The algorithm takes a parallel design and is implemented with CUDA (Compute Unified Device Architecture), so that it can be efficiently applied to big data. We test the algorithm with two real-world datasets, and the results are visualized with extended circular dendrograms and other visualization techniques. View Full-Text
Keywords: data management; hierarchy construction; parallel computing; visualization data management; hierarchy construction; parallel computing; visualization

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Wang, J.; Zelenyuk, A.; Imre, D.; Mueller, K. Big Data Management with Incremental K-Means Trees–GPU-Accelerated Construction and Visualization. Informatics 2017, 4, 24.

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