NDLI: Data Clustering Using the Natural Bézier Functions

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Data Clustering Using the Natural Bézier Functions

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Venkataraman, P.
Copyright Year	2018
Abstract	An unorthodox and effective non-iterative procedure for spherical clusters is demonstrated in this paper. It uses natural Bézier functions to determine initial cluster locations using the content of the data. The natural Bernstein-Bézier functions are very robust in representing data through continuous functions in the application of functional data analysis. This paper demonstrates that they are equally robust at resolving data clusters in classification problems. The original data is scaled and segmented. A natural Bézier function is fitted for each segment and the initial clusters are centered at the function extremums that are distinctly located. A self-selection process based on least distance is used to assign the data to these initial cluster centers. A minimum membership count is imposed and nearby clusters are combined to reduce these initial cluster centers based on visual clues. Centroid recalculation and data reassignment can be used for centroid convergence. The method is demonstrated for two dimensional spherical clusters. This approach requires no iteration. Four examples from clustering benchmark datasets are used to showcase the method. The data include different numbers of clusters, different data density for the clusters, as well as different levels of overlap. This method is new and different from other data clustering methods available in the literature. It is better than the standard k-means clustering method since it does not require information on the number of clusters or cluster membership count. The method is non-iterative and does not require random initialization or distance optimization.
Sponsorship	Design Engineering Division Computers and Information in Engineering Division
File Format	PDF
ISBN	9780791851722
DOI	10.1115/DETC2018-85103
Volume Number	Volume 1A: 38th Computers and Information in Engineering Conference
Conference Proceedings	ASME 2018 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
Language	English
Publisher Date	2018-08-26
Publisher Place	Quebec City, Quebec, Canada
Access Restriction	Subscribed
Subject Keyword	Density Optimization
Content Type	Text
Resource Type	Article

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