Post Tuned Hashing,PTH

[ACM 2018] Post Tuned Hashing_A New Approach to Indexing High-dimensional Data [paper] [code]

Zhendong Mao, Quan Wang, Yongdong Zhang, Bin Wang.

Overcome

  • 大多数哈希方法都有二值化过程,二值化加速了检索过程,但同时难以避免得也破环了原始数据的相邻结构。

Supervised Hashing with Kernels, KSH

Notation

该论文中应用到较多符号,为避免混淆,在此进行解释:

n:原始数据集的大小

l:实验中用于监督学习的数据集大小(矩阵S行/列的大小)

m:辅助数据集,用于得到基于核的哈希函数

r:比特位数量/哈希函数的个数

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