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231225s2021 xx |||||o 00| ||eng c |
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|a 10.1109/TPAMI.2020.2985708
|2 doi
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|a eng
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| 100 |
1 |
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|a Gao, Junyu
|e verfasserin
|4 aut
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| 245 |
1 |
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|a Learning to Model Relationships for Zero-Shot Video Classification
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| 264 |
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|c 2021
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| 336 |
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|a ƒa Online-Ressource
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| 500 |
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|a Date Revised 03.09.2021
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a With the explosive growth of video categories, zero-shot learning (ZSL) in video classification has become a promising research direction in pattern analysis and machine learning. Based on some auxiliary information such as word embeddings and attributes, the key to a robust ZSL method is to transfer the learned knowledge from seen classes to unseen classes, which requires relationship modeling between these concepts (e.g., categories and attributes). However, most existing approaches ignore to model the explicit relationships in an end-to-end manner, resulting in low effectiveness of knowledge transfer. To tackle this problem, we reconsider the video ZSL task as a task-driven message passing process to jointly enjoy several merits including alleviated heterogeneity gap, low domain shift, and robust temporal modeling. Specifically, we propose a prototype-sample GNN (PS-GNN) consisting of a prototype branch and a sample branch to directly and adaptively model all the relationships between category-attribute, category-category, and attribute-attribute. The prototype branch aims to learn robust representations of video categories, which takes as input a set of word-embedding vectors corresponding to the concepts. The sample branch is designed to generate features of a video sample by leveraging its object semantics. With the co-adaption and cooperation between both branches, a unified and robust ZSL framework is achieved. Extensive experiments strongly evidence that PS-GNN obtains favorable performance on five popular video benchmarks consistently
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|a Journal Article
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| 700 |
1 |
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|a Zhang, Tianzhu
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Xu, Changsheng
|e verfasserin
|4 aut
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| 773 |
0 |
8 |
|i Enthalten in
|t IEEE transactions on pattern analysis and machine intelligence
|d 1979
|g 43(2021), 10 vom: 30. Okt., Seite 3476-3491
|w (DE-627)NLM098212257
|x 1939-3539
|7 nnns
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| 773 |
1 |
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|g volume:43
|g year:2021
|g number:10
|g day:30
|g month:10
|g pages:3476-3491
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| 856 |
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|u http://dx.doi.org/10.1109/TPAMI.2020.2985708
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|d 43
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