Spherical k-means clustering

Kurt Hornik, Ingo Feinerer, Martin Kober, Christian Buchta

Publication: Scientific journalJournal articleResearchpeer-review

Abstract

Clustering text documents is a fundamental task in modern data analysis, requiring approaches which perform well both in terms of solution quality and computational efficiency. Spherical k-means clustering is one approach to address both issues, employing cosine dissimilarities to perform prototype-based partitioning of term weight representations of the documents.

This paper presents the theory underlying the standard spherical k-means problem and suitable extensions, and introduces the R extension package skmeans which provides a computational environment for spherical k-means clustering featuring several solvers: a fixed-point and genetic algorithm, and interfaces to two external solvers (CLUTO and Gmeans). Performance of these solvers is investigated by means of a large scale benchmark experiment.
Original languageEnglish
Pages (from-to)1 - 22
JournalJournal of Statistical Software
Volume50
Issue number10
Publication statusPublished - 1 Nov 2012

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