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Pattern discovery in motion time series via structure-based spectral clustering

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3 Author(s)
Xiaozhe Wang ; Dept. of Comput. Sci. & Software Eng., Melbourne Univ., Melbourne, VIC ; Liang Wang ; Wirth, A.

This paper proposes an approach called dasiastructure-based spectral clusteringpsila to identify clusters in motion time series for sequential pattern discovery. The proposed approach deploys a dasiastatistical feature-based distance computationpsila for spectral clustering algorithm. Compared to traditional spectral clustering approaches, in which the similarity matrix is constructed from the original data points by applying some similarity functions, the proposed approach builds the matrix based on a finite set of feature vectors. When the proposed approach uses less data points and simpler similarity function to computing the similarity matrix input for spectral clustering, it can improve the computational efficiency in constructing the similarity graph in spectral clustering compared to conventional approach. Promising experimental results with high accuracy on real world data sets demonstrate the capability and effectiveness of the proposed approach for pattern discovery in motion video sequences.

Published in:

Computer Vision and Pattern Recognition, 2008. CVPR 2008. IEEE Conference on

Date of Conference:

23-28 June 2008