Parametric local multiview hamming distance metric learning
Parametric local multiview hamming distance metric learning
复制标题
参数化局部多视图汉明距离度量学习
DOI:
10.1016/j.patcog.2017.06.018
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发表时间:
2018-03
影响因子:
8
通讯作者:
Wen Gao
中科院分区:
文献类型:
--
作者:
Deming Zhai;Xianming Liu;Hong Chang;Yi Zhen;Xilin Chen;Maozu Guo;Wen Gao
Learning an appropriate distance metric is a crucial problem in pattern recognition. To confront with the scalability issue of massive data, hamming distance on binary codes is advocated since it permits exact sub-linear kNN search and meanwhile shares the advantage of efficient storage. In this paper, we study hamming metric learning in the context of multimodal data for cross-view similarity search. We present a new method called Parametric Local Multiview Hamming metric (PLMH), which learns multiview metric based on a set of local hash functions to locally adapt to the data structure of each modality. To balance locality and computational efficiency, the hash projection matrix of each instance is parameterized, with guaranteed approximation error bound, as a linear combination of basis hash projections associated with a small set of anchor points. The weak-supervisory information (side information) provided by pairwise and triplet constraints are incorporated in a coherent way to achieve semantically effective hash codes. A local optimal conjugate gradient algorithm with orthogonal rotations is designed to learn the hash functions for each bit, and the overall hash codes are learned in a sequential manner to progressively minimize the bias. Experimental evaluations on cross-media retrieval tasks demonstrate that PLMH performs competitively against the state-of-the-art methods.
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DOI:
10.1023/b:visi.0000029664.99615.94
发表时间:
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影响因子:
19.5
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发表时间:
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期刊:
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DOI:
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