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Lecture 3-4Clustering (1hr)Gaussian Mixture and EM (1hr)
Tae-Kyun Kim
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Vector Clustering
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RGB
Pixel Clustering (Image Quantisation)
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dim
ensi
on
D…
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or raw pixels
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K codewords
Patch Clustering
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Refer to Lecture 9-10 for BoW
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Image Clustering
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K-means vs GMM
Hard clustering
Soft clustering
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Matrix and Vector Derivatives
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K-means Clustering
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Statistical Pattern Recognition Toolbox for Matlab
http://cmp.felk.cvut.cz/cmp/software/stprtool/
…\stprtool\probab\cmeans.m…\stprtool\probab\cmeans_tk.m
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Mixture of Gaussians
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Maximum Likelihood
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Statistical Pattern Recognition Toolbox for Matlab
http://cmp.felk.cvut.cz/cmp/software/stprtool/
…\stprtool\visual\pgmm.m…\stprtool\demos\demo_emgmm.m
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Advanced topic (optional)
http://www.iis.ee.ic.ac.uk/~tkkim/mlcv/lecture_clustering_em.pdf
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EM Algorithm in General