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8th International Conference on computing and Pattern Recognition, ICCPR 2019

作者： Tian, Hechan Qiao, Yaqiong Liu, Yimin State Key Laboratory of Mathematical Engineering and Advanced Computing Zhengzhou Henan*** China

ISBN: (纸本)9781450376570

Twitter user geolocation is applied into various applications, such as local messages recommendation and event location recognition. Existing methods do not usually utilize the potential positional correlation between heterogeneous information, resulting in low user geolocation accuracy. Therefore, this paper proposes a user geolocation method based on heterogeneous network and label propagation. First, a heterogeneous network is built based on heterogeneous information mined from user tweets. Then, by analyzing the factors that impact the efficiency and accuracy of label propagation, redundant nodes and edges in the initialized heterogeneous network are removed. Finally, the locations of unlabeled users are geolocated through label propagation in the simplified heterogeneous network. Experiments on the publicly available Twitter benchmark dataset show that proposed method accurately locate 57% of users within 161 km of their locations, a significant improvement over several existing methods. © 2019 Association for computing Machinery.

关键词： Heterogeneous networks

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Research on key Technology of Industrial Network Boundary Protection based on Endogenous Security 4

Research on Key Technology of Industrial Network Boundary Pr...

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4th IEEE advanced Information Management, Communicates, Electronic and Automation Control Conference, IMCEC 2021

作者： Yu, Fei Wei, Qiang Geng, Yangyang Wang, Yunchao State Key Laboratory of Mathematical Engineering and Advanced Computing Zhengzhou450001 China

ISBN: (纸本)9781728185347

Industrial network boundary protection equipment faces threats from attackers when protecting the industrial control system network. The similarity and static characteristics caused by large-scale and long-term deployment determine that it could only defend against known attacks but could not deal with unknown APT threats, which leads to the breakthrough of one defense line is equivalent to the breakthrough of all defense lines and may bring challenges to industrial production safety. This paper proposes a mimic defense model of industrial isolation gateway based on endogenous security. With the dynamic scheduling mechanism to transform the attack surface, the gateway selects multiple heterogeneous filter executors to process the same packet simultaneously. By comparing the processing results of each executor, anomaly detection is carried out to realize the dynamic defense of the industrial isolation gateway. The experimental results show that the industrial isolation gateway based on mimic architecture can significantly increase the difficulty of backdoor utilization, such as paralysis, rule tampering, and information theft, and effectively defend the industrial control system from the threats caused by the backdoors and vulnerabilities of the isolation gateway while exerting the normal boundary protection function. © 2021 IEEE.

关键词： Anomaly detection

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Virtual channel based aggregated multi-source multicast across backbone

Virtual channel based aggregated multi-source multicast acro...

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International Conference on Control engineering and Information System, ICCEIS 2014

作者： Chen, Y. Li, C.L. Huang, K.X. Zhang, X.B. State Key Laboratory of Mathematical Engineering and Advanced Computing ZhengzhouHenan China

ISBN: (纸本)9781138026858

To achieve the tradeoff between state aggregation and traffic redundancy, different branches of the tree are formed in backbone and receivers’ access networks. In receivers’ access network, each branch corresponds to a multicast group;while in the backbone and on the paths of senders to backbone, each branch corresponds to a multicast traffic class, which achieves multicast states aggregation. Simulation results show that VC-AMSM will result in some traffic redundancy, but it can greatly reduce the number of multicast states and control messages in the network. And the one-tree-one-traffic-class characteristic provides a preferable basis to reconfigure the routing to label switching. © 2015 Taylor & Francis Group, London.

关键词： Redundancy

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OpenMP automatic translation framework for Sunway TaihuLight 3

OpenMP automatic translation framework for Sunway TaihuLight

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3rd IEEE International Conference on Communications, Information System and Computer engineering, CISCE 2021

作者： Li, Mingliang Pang, Jianmin Yue, Feng Wang, Qihan State Key Laboratory of Mathematical Engineering and Advanced Computing Henan Zhengzhou China

ISBN: (纸本)9780738112152

The Sunway processor is a unique heterogeneous many-core processor used by Sunway TaihuLight supercomputer. However, developing parallel programs on the Sunway processor is still complex. In this paper, a source-to-source translation framework for the Sunway heterogeneous many-core processors is designed and implemented, which can transform OpenMP programs into many-core accelerated programs amenable to the Sunway architecture. Considering differences between the OpenMP shared-memory programming model and the Sunway programming model, a translation model has been proposed for converting OpenMP programs. A set of runtime functions based on the Sunway architecture has been implemented, including a tree-based reduction algorithm and an effective distributed lock mechanism. The experimental results show that the translation framework can correctly translate OpenMP programs, and the proposed lock mechanism reduces the overhead by up to 90% against the baseline. © 2021 IEEE.

关键词： Supercomputers

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A binary translation backend registers allocation algorithm based on priority 5th

A binary translation backend registers allocation algorithm ...

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5th International Conference on Geo-Spatial Knowledge and Intelligence, GSKI 2017

作者： Wang, Jun Pang, Jianmin Fu, Liguo Shan, Zheng Yue, Feng Zhang, Jiahao State Key Laboratory of Mathematical Engineering and Advanced Computing Zhengzhou450001 China

ISBN: (纸本)9789811308956

As most binary translation systems don’t consider the difference of register requirements of basic blocks, which brings redundant memory access instructions caused by unnecessary registers overflow. To solve this problem, a binary translation backend registers allocation algorithm based on priority (BTBRAP) is proposed. Firstly, local global register is allocated statically to reduce the global register maintenance overhead, according to the statistical features of registers on the source platform. Then, the number of every register requested in basic blocks is determined, according to the relationship between intermediate representation and the source platform registers. So the priority of registers allocation is obtained. Conclusively, allocate the registers dynamically based on the priority to reduce the registers overflow. As the test results of nbench, representative recursive programs and SPEC2006 show, the algorithm effectively reduces the redundant memory access of local code, and improves the program performance with an average increase of 7.94%. © Springer Nature Singapore Pte Ltd. 2018.

关键词： Software testing

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A Natural Deep Ritz Method for Essential Boundary Value Problems

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Journal of Computational Physics 2025年

作者： Haijun Yu Shuo Zhang Institute of Computational Mathematics and Scientific/Engineering Computing Academy of Mathematics and System Sciences State Key Laboratory of Mathematical Sciences (SKLMS) and State Key Laboratory of Scientific and Engineering Computing (LSEC) Chinese Academy of Sciences Beijing 100190 China School of Mathematical Sciences University of Chinese Academy of Sciences Beijing 100049 China

Deep neural network approaches show promise in solving partial differential equations. However, unlike traditional numerical methods, they face challenges in enforcing essential boundary conditions. The widely adopted penalty-type methods, for example, offer a straightforward implementation but introduces additional complexity due to the need for hyper-parameter tuning; moreover, the use of a large penalty parameter can lead to artificial extra stiffness, complicating the optimization process. In this paper, we propose a novel, intrinsic approach to impose essential boundary conditions through a framework inspired by intrinsic structures. We demonstrate the effectiveness of this approach using the deep Ritz method applied to Poisson problems, with the potential for extension to more general equations and other deep learning techniques. Numerical results are provided to substantiate the efficiency and robustness of the proposed method.

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Cluster-Based Routing Algorithm for WSN Based on Subtractive Clustering 16

Cluster-Based Routing Algorithm for WSN Based on Subtractive...

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16th IEEE International Wireless Communications and Mobile computing Conference, IWCMC 2020

作者： Chen, Ling Liu, Wenwen Gong, Daofu Chen, Yan State Key Laboratory of Mathematical Engineering and Advanced Computing Zhengzhou450002 China

ISBN: (纸本)9781728131290

The Cluster-based Routing Algorithm for Wireless Sensor Network based on Subtractive Clustering (SCC algorithm) generates nodes of cluster head in dense area of the node by relying on subtractive clustering. The application of this algorithm effectively solves the attribution problem of non-cluster head node in conventional algorithms, and consumption is evenly distributed throughout the network. Through simulation experiments, it can be found that the application of the SCC algorithm can map the distribution of nodes of cluster head reasonably and delay the death time of the first node to prolong the lifetime of network and balance the energy consumption of nodes. © 2020 IEEE.

关键词： Routing algorithms

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Research on the Protection Mechanism of Cisco IOS Exploit 4

Research on the Protection Mechanism of Cisco IOS Exploit

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4th International Conference on Data Mining, Communications and Information Technology, DMCIT 2020

作者： Wang, Jinzhu Cai, Ruijie Liu, Shengli State Key Laboratory of Mathematical Engineering and Advanced Computing Zhengzhou450001 China

Cisco IOS is an operating system that runs on Cisco routing and switching equipment. Its security is important to the entire network. Since vulnerability attacks have become one of the main sources of threat to Cisco IOS security, it is necessary to analyze the defense mechanism of IOS against vulnerability attacks. The purpose of this paper is to find out the deficiencies of IOS vulnerability defense mechanism in time and put forward improvement methods and preventive measures. Firstly, this paper introduces the protection mechanism of Cisco IOS vulnerability, including CheckHeaps, DEP, ASLR. The principle of these mechanisms and the idea of vulnerability protection are analyzed. And then, after analyzing the shortcomings of these protection mechanisms, the basic idea of bypassing these protection mechanisms is proposed. Finally, in view of the shortcomings of Cisco IOS vulnerability defense mechanism and the proposed bypass methods, some advices about how to better protect Cisco IOS from vulnerability exploitation are given. © Published under licence by IOP Publishing Ltd.

关键词： Network security

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A survey of proactive defense in industrial control system

A survey of proactive defense in industrial control system

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2022 International Conference on Electronic Information Technology, EIT 2022

作者： Liu, Ke Wu, Qianqiong Geng, Yangyang Ma, Rongkuan Wei, Qiang State Key Laboratory of Mathematical Engineering and Advanced Computing Zhengzhou450001 China

ISBN: (纸本)9781510655096

With the development of Industrial 4.0, the popularity of information technology (IT) systems in industrial control systems (ICSs) has brought great cyber-attack risk. The proactive defense technology, an important defense approach, plays a vital role in ICSs. This paper introduces the definition, taxonomy and application of proactive defense in ICSs. We divide the existing ICS proactive defense approaches into three categories and summarize their technical characteristics. Finally, the application prospects and open issues of proactive defense in ICS are summarized. © COPYRIGHT SPIE. Downloading of the abstract is permitted for personal use only.

关键词： Cybersecurity

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Truth discovery on multi-dimensional properties of data sources 19

Truth discovery on multi-dimensional properties of data sour...

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2019 ACM Turing Celebration Conference - China, ACM TURC 2019

作者： Zheng, Yan Yin, Meijuan Luo, Junyong He, Gongzhen State Key Laboratory of Mathematical Engineering and Advanced Computing Zhengzhou450002 China

ISBN: (纸本)9781450371582

In the era of information explosion, data fusion has captured increasing attention from researchers as it plays an important part in data application. However, resolving the inconsistency of information generated by various data sources, i.e., truth discovery, has posed great challenges to data fusion. Although existing truth discovery methods mainly focus on source quality, they conduct the truth derivation iteratively only based on the accuracy of sources rather than the recall, which leads to the bad precision. Considering the assumption, sources are independent, cannot satisfy the reality of diverse correlations between them any more. A Gaussian Truth Finder with Correlations (GTFC) algorithm has been proposed in this paper. GTFC iteratively derives the truth, accuracy and recall of sources. The empirical results demonstrate that GTFC can significantly outperform the state-of-the-art algorithms. © 2019 Association for computing Machinery.

关键词： Data fusion

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