检索结果-内蒙古大学图书馆

IADIS International Conference WWW/Internet 2010

作者： Feng, Wangsen Zhang, Bei Xia, Yunni Li, Jiajing Meng, Tao Key Laboratory of Network and Software Security Assurance of Ministry of Education Computing Center Peking University Beijing 100871 China College of Computer Science Chongqing University Chongqing 400044 China School of Mechanical Electronic and Information Engineering China University of Mining and Technology Beijing 100083 China Institute of Computing Technology Chinese Academy of Sciences Beijing 100190 China

ISBN: (纸本)9789728939250

Today, almost all the C2C e-commerce community member reputation evaluating algorithms are time sensitive. The reputation of a community member is accumulated after transactions and the increment of reputation after a successful transaction is computed based on the score given by his or her transaction partner. Since people always tend to do business with those with high reputation value, the reputation of members joined in C2C community at different time will vary greatly although they may provide the same commodity quality and service. It is unfair to new comers. In this paper, we propose a novel algorithm to overcome the shortcoming. Based on the transaction social network, our algorithm employs the random walk strategy to compute member reputation and enhance system fairness. © 2010 IADIS.

关键词： Electronic commerce

来源：评论

学校读者我要写书评

暂无评论

Threshold Signature Scheme Based on Non-internative Diffie-Hellman Signature

Threshold Signature Scheme Based on Non-internative Diffie-H...

引用

International Conference on networking and Distributed computing (ICNDC)

作者： Xiuqun Wang Lican Huang Key Laboratory of Information System Security Ministry of Education Tsinghua University Beijing China Institute of Network and Distributed Computing Zhejiang Science and Technology University Hangzhou China

We present a threshold signature based on non-internative Diffie-Hellman signature. It works in asynchronous communication system and can tolerate Byzantine faults with optimal resilience n ≥ = 3t + 1, where n is the number of the participants and t is the number of the fault participants. The security of this scheme bases on discrete logarithm intractability assumption. We give the security analysis of our proposed threshold signature scheme.

关键词： Polynomials Protocols Public key Interpolation Robustness

来源：评论

学校读者我要写书评

暂无评论

A collaborative framework for privacy protection in online social networks

A collaborative framework for privacy protection in online s...

引用

International Conference on Collaborative computing: networking, Applications and Worksharing (CollaborateCom)

作者： Yan Zhu Zexing Hu Huaixi Wang Hongxin Hu Gail-Joon Ahn Key Laboratory of Network and Software Security Assurance Ministry of Education Peking University China Institute of Computer Science and Technology Peking University Beijing China School of Mathematical Sciences Peking University Beijing China Laboratory of Security Engineering for Future Computing (SEFCOM) Arizona State University Tempe AZ USA

With the wide use of online social networks (OSNs), the problem of data privacy has attracted much attention. Several approaches have been proposed to address this issue. One of privacy management approaches for OSN leverages a key management technique to enable a user to simply post encrypted contents so that only users who can satisfy the associate security policy can derive the key to access the data. However, the key management policies of existing schemes may grant access to unauthorized users and cannot efficiently determine authorized users. In this paper, we propose a collaborative framework which enforces access control for OSN through an innovative key management focused on communities. This framework introduces a community key management based on a new group-oriented convergence cryptosystem, as well as provides an efficient privacy preservation needed in a private OSN. To prove the feasibility of our approach, we also discuss a proof-of-concept implementation of our framework. Experimental results show that our construction can achieve the identified design goals for OSNs with the acceptable performance.

关键词： Cryptography Servers Kernel Data privacy Social network services Communities Collaboration

来源：评论

学校读者我要写书评

暂无评论

Analysis and computing of Association Degree of SMS Feature Words

Analysis and Computing of Association Degree of SMS Feature ...

引用

International Conference on networking and Services (ICNS)

作者： Qindong Sun Hongli Qiao Nan Wang Network Computing and Security Key Laboratory of Shaanxi Xi''an University of Technology Xi'an China MOE Key Laboratory of Intelligent and Network Security Xi''an Jiaotong University Xi'an China

How to judge the relationship between mobile short messages is the key technology of mobile short message topic detection. The characteristics of the mobile SMS text are discussed in this paper, and the association of different SMS topic feature words is analyzed. Then a computing method of the association degree between different SMS feature words is proposed, which is based on leverage formula. The experimental results show that this method can effectively calculate the association degrees between SMS feature words, which could help to extract hot topics in corpus of a mess of short messages.

关键词： Computer networks Data mining Internet Mobile computing Clustering algorithms Information services Web sites Detection algorithms Independent component analysis IP networks

来源：评论

学校读者我要写书评

暂无评论

SkyF2F: Censorship Resistant via Skype Overlay network

SkyF2F: Censorship Resistant via Skype Overlay Network

引用

WASE International Conference on Information Engineering, ICIE

作者： Shoufeng Cao Longtao He Zhongxian Li Yixian Yang Information Security Center State Key Laboratory of Networking and Switching Technology Key Laboratory of network and information attack & defence technology of MOE Beijing University of Posts and Telecommunications China Research Center of Information Security Institute of Computing Technology Chinese Academy and Sciences Beijing China

Internet censorship is on the rise as an increasing number of countries and companies block or monitor access to parts of the Internet. Many censorship resistant systems have been proposed, which rely on deploying many access points to the censored domain. Therefore they face the problem of discovering available nodes and deploying a large number of nodes. Opposite to many access point approach, we present a system building on existing overlay network, a low-cost solution for circumventing Internet, called SkyF2F. SkyF2F is a plug-in for Skype client that allows users to establish a covert communication tunnel across Skype overlay network. We describe the design, a prototype implementation and security analysis of SkyF2F. Our security analysis shows that SkyF2F can successfully circumvent several sophisticated censoring techniques.

关键词： Information security Internet Computer security National security Laboratories Cryptography Buildings Prototypes Monitoring IP networks

来源：评论

学校读者我要写书评

暂无评论

security and trust in digital rights management: A survey

引用

International Journal of network security 2009年第3期9卷 247-263页

作者： Zhang, Zhiyong Pei, Qingqi Ma, Jianfeng Yang, Lin Ministry Of Education Key Laboratory of Computer Network and Information Security Xidian University Taibai South Road No.2 Xi'an Shannxi 710071 China Electronic Information Engineering College Henan University of Science and Technology Xiyuan Road No.48 Luoyang Henan 471003 China The Research Institute China Electronic Equipment and Systems Engineering Corporation Dacheng Road 13 Beijing 100141 China

A successful transaction of digital contents is primarily dependent on security policies, trust relationships and benefit equilibriums among various participants in a DRM (Digital Rights Management)-enabling contents value chain ecosystem. We first analyzed basic value chain architectures in existence, together with some fundamental security and trust requirements. And then, a state-of- the-art anatomy of the security and trust related to DRM was presented from different stakeholder' perspectives. Next, some challenges for multi-party mutual trust, not just inclined to any of participants, were proposed based on the holistic consideration of the digital contents/rights protection and the benefits balance. Finally, a conclusion was drawn that the rights-benefits-centric DRM ecosystem and the resulting trust relationship are crucial for the survivability of the contents industry.

关键词： Ecosystems

来源：评论

学校读者我要写书评

暂无评论

Quick Finding of network Video Stream

Quick Finding of Network Video Stream

引用

International Conference on Computer Science and Information technology (CSIT)

作者： Qindong Sun Shengli Li Xiaojun Guo Network Computing and Security Key Laboratory of Shaanxi Xi'an University of Technology Xi'an China School of Electronics and Information Engineering Xi'an Jiaotong University Xi'an China Department of Research and Development Xi'an Anzhi Science and Technology Corporation Xi'an China

network video technology develops quickly in recent years and the applications of network video are various. The effectively managing of the application based on network video is necessary for network flow management, network security, etc. and finding video stream from the network flow is the precondition and foundation. This paper analyzes the characteristics of the video stream packets, and draws a conclusion that each network video stream type can be labeled uniquely by one characteristic string, based on which, we can find video streams in network flow easily. The experiment results show that the method is able to find network video streams accurately.

关键词： Streaming media Protocols Decision support systems Payloads Servers IP networks Internet

来源：评论

学校读者我要写书评

暂无评论

A Systematic Literature Review of Robust Federated Learning: Issues, Solutions, and Future Research Directions

引用

ACM computing Surveys 1000年

作者： Md Palash Uddin Yong Xiang Mahmudul Hasan Jun Bai Yao Zhao Longxiang Gao School of Information Technology Deakin University Burwood Australia Deakin University Burwood Australia Key Laboratory of Computing Power Network and Information Security Ministry of Education Shandong Computer Science Center Shandong Academy of Sciences Qilu University of Technology Jinan China Shandong Provincial Key Laboratory of Computing Power Internet and Service Computing Shandong Fundamental Research Center for Computer Science Jinan China

Federated Learning (FL) has emerged as a promising paradigm for training machine learning models across distributed devices while preserving their data privacy. However, the robustness of FL models against adversarial data and model attacks, noisy updates, and label-flipped data issues remain a critical concern. In this paper, we present a systematic literature review using the PRISMA framework to comprehensively analyze existing research on robust FL. Through a rigorous selection process using six key databases (ACM Digital Library, IEEE Xplore, ScienceDirect, Springer, Web of Science, and Scopus), we identify and categorize 244 studies into eight themes of ensuring robustness in FL: objective regularization, optimizer modification, differential privacy employment, additional dataset requirement and decentralization orchestration, manifold, client selection, new aggregation algorithms, and aggregation hyperparameter tuning. We synthesize the findings from these themes, highlighting the various approaches and their potential gaps proposed to enhance the robustness of FL models. Furthermore, we discuss future research directions, focusing on the potential of hybrid approaches, ensemble techniques, and adaptive mechanisms for addressing the challenges associated with robust FL. This review not only provides a comprehensive overview of the state-of-the-art in robust FL but also serves as a roadmap for researchers and practitioners seeking to advance the field and develop more robust and resilient FL systems.

关键词： Federated Learning Robustness Attack Countermeasure Defence.

来源：评论

学校读者我要写书评

暂无评论

IBAQ: Frequency-Domain Backdoor Attack Threatening Autonomous Driving via Quadratic Phase

引用

ACM Transactions on Autonomous and Adaptive Systems 1000年

作者： Jinghan Qiu Honglong Chen Junjian Li Yudong Gao Junwei Li Xingang Wang College of Control Science and Engineering China University of Petroleum China the Key Laboratory of Computing Power Network and Information Security Ministry of Education Qilu University of Technology China

The rapid evolution of backdoor attacks has emerged as a significant threat to the security of autonomous driving models. An attacker injects a backdoor into the model by adding triggers to the samples, which can be activated to manipulate the model’s inference. Backdoor attacks can lead to severe consequences, such as misidentifying traffic signs during autonomous driving, posing a risk of causing traffic accidents. Recently, there has been a gradual evolution of frequency-domain backdoor attacks. However, since the change of both amplitude and its corresponding phase will significantly affect image appearance, most of the existing frequency-domain backdoor attacks change only the amplitude, which results in a suboptimal efficacy of the attack. In this work, we propose an attack called IBAQ, to solve this problem by blurring semantic information of the trigger image through the quadratic phase. Initially, we convert the trigger and benign sample to YCrCb space. Then, we perform the fast Fourier transform on the Y channel, blending the trigger image’s amplitude and quadratic phase linearly with the benign sample’s amplitude and phase. IBAQ achieves covert injection of trigger information within amplitude and phase, enhancing the attack effect. We validate the effectiveness and stealthiness of IBAQ through comprehensive experiments.

关键词： backdoor attack quadrature phase artificial intelligence security

来源：评论

学校读者我要写书评

暂无评论

S3 Agent: Unlocking the Power of VLLM for Zero-Shot Multi-modal Sarcasm Detection

引用

ACM Transactions on Multimedia computing, Communications, and Applications 1000年

作者： Peng Wang Yongheng Zhang Hao Fei Qiguang Chen Yukai Wang Jiasheng Si Wenpeng Lu Min Li Libo Qin School of Computer Science and Engineering Central South University China National University of Singapore Singapore Harbin Institute of Technology China Key Laboratory of Computing Power Network and Information Security Ministry of Education Qilu University of Technology (Shandong Academy of Sciences) China

Multi-modal sarcasm detection involves determining whether a given multi-modal input conveys sarcastic intent by analyzing the underlying sentiment. Recently, vision large language models have shown remarkable success on various of multi-modal tasks. Inspired by this, we systematically investigate the impact of vision large language models in zero-shot multi-modal sarcasm detection task. Furthermore, to capture different perspectives of sarcastic expressions, we propose a multi-view agent framework, S3 Agent, designed to enhance zero-shot multi-modal sarcasm detection by leveraging three critical perspectives: superficial expression, semantic information, and sentiment expression. Our experiments on the MMSD2.0 dataset, which involves six models and four prompting strategies, demonstrate that our approach achieves state-of-the-art performance. Our method achieves an average improvement of 13.2% in accuracy. Moreover, we evaluate our method on the text-only sarcasm detection task, where it also surpasses baseline approaches.

关键词： Natural language processing Multi-modal sarcasm detection Vision Large language model

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：