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Fig. 9.6
Empirical studies on codebook size selection. (
a
) Average sports accuracy performance
for genre categorization. (
b
) Individual sport accuracy performance for view classification
at codebook size 1,500. For view classification, the accuracies of individual sport
as a function of different codebook sizes are shown in Fig.
9.6
b. Although various
accuracy levels are observed for each sport, the individual performance follows a
similar plateau trend. Based on these empirical studies, it is concluded that the
performances are proportional to codebook sizes, with stable results at codeword
ranges of 800-1,500 and 800-1,000 for genre categorization and view classification,
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