NDLI: Modeling video hyperlinks with hypergraph for web video reranking

Content Provider	ACM Digital Library
Author	Ngo, Chong-Wah Tan, Hung-Khoon Wu, Xiao
Abstract	In this paper, we investigate a novel approach of exploiting visual-duplicates for web video reranking using hypergraph. Current graph-based reranking approaches consider mainly the pair-wise linking of keyframes and ignore reliability issues that are inherent in such representation. We exploit higher order relation to overcome the issues of missing links in visual-duplicate keyframes and in addition identify the latent relationships among keyframes. Based on hypergraph, we consider two groups of video threads: visual near-duplicate threads and story threads, to hyperlink web videos and describe the higher order information existing in video content. To facilitate reranking using random walk algorithm, the hypergraph is converted to a star-like graph using star expansion algorithm. Experiments on a dataset of 12,790 web videos show that hypergraph reranking can improve web video retrieval up to 45% over the initial ranked result by the video sharing websites and 8.3% over the pair-wise based graph reranking in mean average precision (MAP).
Starting Page	659
Ending Page	662
Page Count	4
File Format	PDF
ISBN	9781605583037
DOI	10.1145/1459359.1459453
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	2008-10-26
Publisher Place	New York
Access Restriction	Subscribed
Subject Keyword	Hypergraph Higher order relation Web video reranking
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
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3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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Modeling video hyperlinks with hypergraph for web video reranking