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http://dx.doi.org/10.3745/KTSDE.2014.3.6.215

A Hashing Method Using PCA-based Clustering  

Park, Cheong Hee (충남대학교 컴퓨터공학과)
Publication Information
KIPS Transactions on Software and Data Engineering / v.3, no.6, 2014 , pp. 215-218 More about this Journal
Abstract
In hashing-based methods for approximate nearest neighbors(ANN) search, by mapping data points to k-bit binary codes, nearest neighbors are searched in a binary embedding space. In this paper, we present a hashing method using a PCA-based clustering method, Principal Direction Divisive Partitioning(PDDP). PDDP is a clustering method which repeatedly partitions the cluster with the largest variance into two clusters by using the first principal direction. The proposed hashing method utilizes the first principal direction as a projective direction for binary coding. Experimental results demonstrate that the proposed method is competitive compared with other hashing methods.
Keywords
Clustering; Approximate Nearest Neighbors Search; Principal Component Analysis; Hashing;
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