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While exploring desirable properties of hash functions in cryptography, the author was led to investigate three notions of functions with scattering or "diffusive" properties, where the functions map between binary strings of fixed finite…

信息论 · 计算机科学 2021-02-10 Samer Seraj

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…

计算机视觉与模式识别 · 计算机科学 2019-11-27 Chaoyou Fu , Liangchen Song , Xiang Wu , Guoli Wang , Ran He

The secure hash function SHA-256 is a function on bit strings. This means that its restriction to the bit strings of any given length can be computed by a finite instruction sequence that contains only instructions to set and get the…

编程语言 · 计算机科学 2017-11-21 J. A. Bergstra , C. A. Middelburg

We present a version of quantum hash function based on non-binary discrete functions. The proposed quantum procedure is "classical-quantum", that is, it takes a classical bit string as an input and produces a quantum state. The resulting…

量子物理 · 物理学 2013-10-21 Farid Ablayev , Alexander Vasiliev

Recent years have seen more and more demand for a unified framework to address multiple realistic image retrieval tasks concerning both category and attributes. Considering the scale of modern datasets, hashing is favorable for its low…

计算机视觉与模式识别 · 计算机科学 2016-07-20 Haomiao Liu , Ruiping Wang , Shiguang Shan , Xilin Chen

These notes describe the most efficient hash functions currently known for hashing integers and strings. These modern hash functions are often an order of magnitude faster than those presented in standard text books. They are also simpler…

数据结构与算法 · 计算机科学 2020-05-12 Mikkel Thorup

The information processing abilities of a multilayer neural network with a number of hidden units scaling as the input dimension are studied using statistical mechanics methods. The mapping from the input layer to the hidden units is…

统计力学 · 物理学 2009-11-07 Michal Rosen-Zvi , Andreas Engel , Ido Kanter

This paper considers the basic question of how strong of a probabilistic guarantee can a hash table, storing $n$ $(1 + \Theta(1)) \log n$-bit key/value pairs, offer? Past work on this question has been bottlenecked by limitations of the…

数据结构与算法 · 计算机科学 2022-09-19 William Kuszmaul

Threshold secret sharing schemes do not prevent any malicious behavior of the dealer or shareholders and so we need verifiable secret sharing, to detect and identify the cheaters, to achieve fair reconstruction of a secret. The problem of…

密码学与安全 · 计算机科学 2012-03-19 Keyur Parmar , Devesh Jinwala

Hashing has been widely used for efficient similarity search based on its query and storage efficiency. To obtain better precision, most studies focus on designing different objective functions with different constraints or penalty terms…

数据结构与算法 · 计算机科学 2018-10-02 Xingbo Liu , Xiushan Nie , Yilong Yin

The stunning empirical successes of neural networks currently lack rigorous theoretical explanation. What form would such an explanation take, in the face of existing complexity-theoretic lower bounds? A first step might be to show that…

机器学习 · 计算机科学 2017-07-18 Le Song , Santosh Vempala , John Wilmes , Bo Xie

Binarized Neural Networks (BNNs) are a class of deep neural networks designed to utilize minimal computational resources, which drives their popularity across various applications. Recent studies highlight the potential of mapping BNN model…

密码学与安全 · 计算机科学 2025-10-28 Gokulnath Rajendran , Suman Deb , Anupam Chattopadhyay

A recent work shows how we can optimize a tree based mode of operation for a rate 1 hash function. In particular, an algorithm and a theorem are presented for selecting a good tree topology in order to optimize both the running time and the…

分布式、并行与集群计算 · 计算机科学 2016-04-15 Kevin Atighehchi

Hyperplane hashing aims at rapidly searching nearest points to a hyperplane, and has shown practical impact in scaling up active learning with SVMs. Unfortunately, the existing randomized methods need long hash codes to achieve reasonable…

机器学习 · 计算机科学 2012-06-22 Wei Liu , Jun Wang , Yadong Mu , Sanjiv Kumar , Shih-Fu Chang

One-way functions are fundamental to classical cryptography and their existence remains a longstanding problem in computational complexity theory. Recently, a provable quantum one-way function has been identified, which maintains its…

量子物理 · 物理学 2024-08-27 Hua-Lei Yin

Along with data on the web increasing dramatically, hashing is becoming more and more popular as a method of approximate nearest neighbor search. Previous supervised hashing methods utilized similarity/dissimilarity matrix to get semantic…

计算机视觉与模式识别 · 计算机科学 2015-09-07 Jinma Guo , Jianmin Li

As the complexity of deep neural networks (DNNs) trend to grow to absorb the increasing sizes of data, memory and energy consumption has been receiving more and more attentions for industrial applications, especially on mobile devices. This…

机器学习 · 计算机科学 2019-12-19 Lei Shi , Shikun Feng , Zhifan Zhu

This paper presents how to make use of the advantage of round-off error effect in some research areas. The float-point operation complies with the reproduce theorem without the external random perturbation. The computation uncertainty…

密码学与安全 · 计算机科学 2007-11-26 P. F. Wang , J. P. Li

This paper focuses on parallel hash functions based on tree modes of operation for an inner Variable-Input-Length function. This inner function can be either a single-block-length (SBL) and prefix-free MD hash function, or a sponge-based…

分布式、并行与集群计算 · 计算机科学 2017-06-13 Kevin Atighehchi , Robert Rolland

Similarity-preserving hashing is a widely-used method for nearest neighbour search in large-scale image retrieval tasks. For most existing hashing methods, an image is first encoded as a vector of hand-engineering visual features, followed…

计算机视觉与模式识别 · 计算机科学 2019-08-17 Hanjiang Lai , Yan Pan , Ye Liu , Shuicheng Yan