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arXiv 1809.02302cs.CVcs.LG
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神经元合并层:面向深度监督散列的渐进式冗余减少

Neurons Merging Layer: Towards Progressive Redundancy Reduction for Deep Supervised Hashing

Institute of Automation, Chinese Academy of Sciences(中国科学院自动化研究所);University of Chinese Academy of Sciences(中国科学院大学);Horizon Robotics(地平线机器人);Center for Excellence in Brain Science and Intelligence Technology, CAS(中国科学院脑科学与智能技术卓越创新中心)

Chaoyou Fu, Liangchen Song, Xiang Wu, Guoli Wang, Ran He

摘要:

深度监督哈希算法已经成为信息检索中的一个活跃的话题。它通过深度哈希网络的输出神经元生成哈希位。在二进制离散化过程中,散列位之间往往存在大量冗余,这在存储和准确性方面都会降低检索性能。本文提出了一种简单而有效的神经元合并层(NMLayer),用于深度监督哈希。构造一个图来表示散列位之间的冗余关系,该图用于指导散列网络的学习。具体来说,它是通过一种在我们的活动和冻结阶段定义的新机制动态学习的。根据学习到的关系,NMLayer将冗余神经元合并在一起,以平衡每个输出神经元的重要性。此外,多个NM层被渐进地训练用于深度散列网络,以从长冗余码学习更紧凑的散列码。在四个数据集上的大量实验表明,我们提出的方法优于最先进的哈希方法。

英文摘要:

Deep supervised hashing has become an active topic in information retrieval. It generates hashing bits by the output neurons of a deep hashing network. During binary discretization, there often exists much redundancy between hashing bits that degenerates retrieval performance in terms of both storage and accuracy. This paper proposes a simple yet effective Neurons Merging Layer (NMLayer) for deep supervised hashing. A graph is constructed to represent the redundancy relationship between hashing bits that is used to guide the learning of a hashing network. Specifically, it is dynamically learned by a novel mechanism defined in our active and frozen phases. According to the learned relationship, the NMLayer merges the redundant neurons together to balance the importance of each output neuron. Moreover, multiple NMLayers are progressively trained for a deep hashing network to learn a more compact hashing code from a long redundant code. Extensive experiments on four datasets demonstrate that our proposed method outperforms state-of-the-art hashing methods.

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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