Achieving stable subspace clustering by post-processing generic clustering results

Duc-Son Pham, Ognjen Arandjelovic, Svetha Venkatesh

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Citations (Scopus)

Abstract

We propose an effective subspace selection scheme as a post-processing step to improve results obtained by sparse subspace clustering (SSC). Our method starts by the computation of stable subspaces using a novel random sampling scheme. Thus constructed preliminary subspaces are used to identify the initially incorrectly clustered data points and then to reassign them to more suitable clusters based on their goodness-of-fit to the preliminary model. To improve the robustness of the algorithm, we use a dominant nearest subspace classification scheme that controls the level of sensitivity against reassignment. We demonstrate that our algorithm is convergent and superior to the direct application of a generic alternative such as principal component analysis. On several popular datasets for motion segmentation and face clustering pervasively used in the sparse subspace clustering literature the proposed method is shown to reduce greatly the incidence of clustering errors while introducing negligible disturbance to the data points already correctly clustered.
Original languageEnglish
Title of host publication2016 International Joint Conference on Neural Networks (IJCNN)
PublisherIEEE
Pages2390-2396
Number of pages7
Volume2016-October
ISBN (Electronic)9781509006205, 9781509006199
DOIs
Publication statusPublished - 31 Oct 2016
EventIEEE World Congress on Computational Intelligence - Vancouver, Canada
Duration: 24 Jul 201629 Jul 2016
http://www.wcci2016.org/

Conference

ConferenceIEEE World Congress on Computational Intelligence
Country/TerritoryCanada
CityVancouver
Period24/07/1629/07/16
Internet address

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