Browsing by Author "Yang, Linjun"

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Browsing by Author "Yang, Linjun"

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  • Li, Yangxi; Geng, Bo; Tao, Dacheng; Zha, Zheng-Jun; Yang, Linjun; Xu, Chao (IEEE-inst Electrical Electronics Engineers Inc, 2012)
    Existing image retrieval systems suffer from a performance variance for different queries. Severe performance variance may greatly degrade the effectiveness of the subsequent query-dependent ranking optimization algorithms, ...
  • Geng, Bo; Tao, Dacheng; Xu, Chao; Yang, Linjun; Hua, Xian-Sheng (IEEE, 2009)
    We propose an automatic approximation of the intrinsic manifold for general semi-supervised learning problems. Unfortunately, it is not trivial to define an optimization function to obtain optimal hyperparameters. Usually, ...
  • Li, Yangxi; Geng, Bo; Yang, Linjun; Xu, Chao; Bian, Wei (Elsevier Science Bv, 2012)
    Query difficulty estimation predicts the performance of the search result of the given query. It is a powerful tool for multimedia retrieval and receives increasing attention. It can guide the pseudo relevance feedback to ...