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- W2022862006 abstract "Tags of image regions are often arranged in a hierarchical taxonomy based on their semantic meanings. In this paper, using the given tag taxonomy, we propose to jointly learn multi-layer hierarchical dictionaries and corresponding linear classifiers for region tagging. Specifically, we generate a node-specific dictionary for each tag node in the taxonomy, and then concatenate the node-specific dictionaries from each level to construct a level-specific dictionary. The hierarchical semantic structure among tags is preserved in the relationship among node-dictionaries. Simultaneously, the sparse codes obtained using the level-specific dictionaries are summed up as the final feature representation to design a linear classifier. Our approach not only makes use of sparse codes obtained from higher levels to help learn the classifiers for lower levels, but also encourages the tag nodes from lower levels that have the same parent tag node to implicitly share sparse codes obtained from higher levels. Experimental results using three benchmark datasets show that the proposed approach yields the best performance over recently proposed methods." @default.
- W2022862006 created "2016-06-24" @default.
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- W2022862006 date "2013-06-01" @default.
- W2022862006 modified "2023-10-17" @default.
- W2022862006 title "Tag Taxonomy Aware Dictionary Learning for Region Tagging" @default.
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- W2022862006 doi "https://doi.org/10.1109/cvpr.2013.54" @default.
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