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arXiv 1904.03549cs.LGstat.ML
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松弛监督离散散列算法

Supervised Discrete Hashing with Relaxation

Institute of Intelligent Machines, Chinese Academy of Sciences(中国科学院合肥智能机械研究所);University of Technology Sydney(悉尼科技大学);University of Sydney(悉尼大学)

Jie Gui, Tongliang Liu, Zhenan Sun, Dacheng Tao, Tieniu Tan

摘要:

数据相关哈希最近引起了人们的关注,因为它能够支持高效检索和存储文档、图像和视频等高维数据。在本文中,我们提出了一种新的基于学习的散列方法称为“监督离散散列松弛”(SDHR)的基础上“监督离散散列”(SDH)。SDH采用普通最小二乘回归和传统的类标号信息的0 - 1矩阵编码作为回归目标(码字),从而固定了回归目标。在SDHR中,回归目标被优化。优化后的回归目标矩阵满足每个样本正确分类的大裕度约束。与使用传统的0 - 1矩阵的SDH相比,SDHR利用学习的回归目标矩阵,因此更准确地测量回归模型的分类误差,并且更灵活。正如预期的那样,SDHR通常优于SDH。在两个大规模图像数据集(CIFAR-10和MNIST)和一个大规模人脸数据集(FRGC)上的实验结果证明了SDHR的有效性和效率。

英文摘要:

Data-dependent hashing has recently attracted attention due to being able to support efficient retrieval and storage of high-dimensional data such as documents, images, and videos. In this paper, we propose a novel learning-based hashing method called "Supervised Discrete Hashing with Relaxation" (SDHR) based on "Supervised Discrete Hashing" (SDH). SDH uses ordinary least squares regression and traditional zero-one matrix encoding of class label information as the regression target (code words), thus fixing the regression target. In SDHR, the regression target is instead optimized. The optimized regression target matrix satisfies a large margin constraint for correct classification of each example. Compared with SDH, which uses the traditional zero-one matrix, SDHR utilizes the learned regression target matrix and, therefore, more accurately measures the classification error of the regression model and is more flexible. As expected, SDHR generally outperforms SDH. Experimental results on two large-scale image datasets (CIFAR-10 and MNIST) and a large-scale and challenging face dataset (FRGC) demonstrate the effectiveness and efficiency of SDHR.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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