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/ Facility Kluwer Academic Pub / / IndustryTerm real-time periodic motion detection / energy function / energy optimization problem / representative shape contexts algorithm / representative shape contexts pruning algorithm / deformable template matching algorithm / image retrieval applications / image search / basic feasible solution / basketball sports news images / / MarketIndex set 1400 / / Organization New York Yankees / Los Angeles Dodgers / Greg Mori School of Computing Science Simon Fraser University Burnaby / Pattern Analysis and Machine Intelligence / / Person Figure / Davis / Mark S. Drew / Cutler / Hao Jiang / / Position runner / representative / pitcher / baseball pitcher / player / skater / / PublishedMedium IEEE Transactions on Pattern Analysis and Machine Intelligence / / Technology clustering algorithm / representative shape contexts algorithm / representative shape contexts pruning algorithm / deformable template matching algorithm / / SocialTag 
Unsupervised Discovery of Action Classes Yang Wang, Hao Jiang, Mark S. Drew, Ze-Nian Li and Greg Mori School of Computing Science Simon Fraser University Burnaby, BC, Canada {ywang12,hjiangb,mark,li,mori}@cs.sfu.ca