Code Consistent Hashing based on Information-theoretic Criterion

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	Code Consistent Hashing based on Information-theoretic Criterion
	Shu Zhang1 ; Jian Liang1 ; Ran He1,2 ; Zhenan Sun1,2
发表期刊	IEEE Transactions on Big Data (TBD)
	2015-11
卷号	1 期号:3 页码:84-94
摘要	Learning based hashing techniques have attracted broad research interests in the Big Media research area. They aim to learn compact binary codes which can preserve semantic similarity in the Hamming embedding. However, the discrete constraints imposed on binary codes typically make hashing optimizations very challenging. In this paper, we present a code consistent hashing (CCH) algorithm to learn discrete binary hash codes. To form a simple yet efficient hashing objective function, we introduce a new code consistency constraint to leverage discriminative information and propose to utilize the Hadamard code which favors an informationtheoretic criterion as the class prototype. By keeping the discrete constraint and introducing an orthogonal constraint, our objective function can be minimized efficiently. Experimental results on three benchmark datasets demonstrate that the proposed CCH outperforms state-of-the-art hashing methods in both image retrieval and classification tasks, especially with short binary codes.
关键词	Supervised Hashing Binary Codes Code Consistent Constraint Information-theoretic Criterion
文献类型	期刊论文
条目标识符	http://ir.ia.ac.cn/handle/173211/19703
专题	智能感知与计算研究中心
通讯作者	Ran He
作者单位	1.Center for Research on Intelligent Perception and Computing (CRIPAC), National Laboratory of Pattern Recognition(NLPR) 2.Center for Excellence in Brain Science and Intelligence Technology (CEBSIT), Chinese Academy of Sciences (CAS)
第一作者单位	模式识别国家重点实验室
通讯作者单位	模式识别国家重点实验室
推荐引用方式 GB/T 7714	Shu Zhang,Jian Liang,Ran He,et al. Code Consistent Hashing based on Information-theoretic Criterion[J]. IEEE Transactions on Big Data (TBD),2015,1(3):84-94.
APA	Shu Zhang,Jian Liang,Ran He,&Zhenan Sun.(2015).Code Consistent Hashing based on Information-theoretic Criterion.IEEE Transactions on Big Data (TBD),1(3),84-94.
MLA	Shu Zhang,et al."Code Consistent Hashing based on Information-theoretic Criterion".IEEE Transactions on Big Data (TBD) 1.3(2015):84-94.

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