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Conference of the North American Fuzzy information Processing Society - NAFIPS

作者： Ying Yu Witold Pedrycz Duoqian Miao Hongyun Zhang Tongji University Shanghai Shanghai CN University of Alberta Edmonton AB CA Department of Computer Science and Technology Key Laboratory of Embedded System and Service Computing Ministry of Education Tongji University Shanghai China

ISBN: (纸本)9781479903467

Nowadays, multi-label classification methods are of growing interest. Due to the relationships among the labels, traditional single-label classification methods are not directly applicable to the multi-label classification problem. This paper presents a novel multi-label classification framework based on the variable precision neighborhood rough sets, called Multi-Label classification using Rough Sets (MLRS) which considers the impact of correlation among the labels and the uncertainty that exists in the mapping between the feature space and label space. A series of experiments reported for seven multi-label datasets show that MLRS achieves promising performance when compared with some famous multi-label learning algorithms.

关键词： Classification algorithms Rough sets Training Testing Approximation methods Uncertainty Prediction algorithms

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Verification of workflow nets with transition conditions

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Journal of Zhejiang University-science C(computers and Electronics) 2012年第7期13卷 483-509页

作者： Zhao-xia WANG Jian-min WANG Xiao-chen ZHU Li-jie WEN School of Software Tsinghua UniversityBeijing 100084China Department of Computer Science and Technology Tsinghua UniversityBeijing 100084China MOE Key Laboratory for Information System Security Tsinghua UniversityBeijing 100084China National Laboratory for Information Science and Technology Tsinghua UniversityBeijing 100084China SDepartment of Logistical Information&Engineering Logistical Engineering UniversityChongqing 400016China

Workflow management is concerned with automated support for business *** management systems are driven by process models specifying the tasks that need to be executed,the order in which they can be executed,which resources are authorised to perform which tasks,and data that is required for,and produced by,these *** workflow instances may run over a sustained period of time,it is important that workflow specifications be checked before they are *** verification is usually concerned with control-flow dependencies only;however,transition conditions based on data may further restrict possible choices between *** this paper we extend workflow nets where transitions have concrete conditions associated with them,called *** then demonstrate that we can determine which execution paths of a WTC-net that are possible according to the control-flow dependencies,are actually possible when considering the conditions based on ***,we are able to more accurately determine at design time whether a workflow net with transition conditions is sound.

关键词： Workflow nets Transition condition Verification Process model

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Topic correlation analysis for cross-domain text classification

Topic correlation analysis for cross-domain text classificat...

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26th AAAI Conference on Artificial Intelligence and the 24th Innovative Applications of Artificial Intelligence Conference, AAAI-12 / IAAI-12

作者： Li, Anghao Jin, Xiaoming Long, Mingsheng Key Laboratory for Information System Security School of Software Tsinghua University Beijing China Department of Computer Science and Technology Tsinghua University Beijing China

ISBN: (纸本)9781577355687

Cross-domain text classification aims to automatically train a precise text classifier for a target domain by using labeled text data from a related source domain. To this end, the distribution gap between different domains has to be reduced. In previous works, a certain number of shared latent features (e.g., latent topics, principal components, etc.) are extracted to represent documents from different domains, and thus reduce the distribution gap. However, only relying the shared latent features as the domain bridge may limit the amount of knowledge transferred. This limitation is more serious when the distribution gap is so large that only a small number of latent features can be shared between domains. In this paper, we propose a novel approach named Topic Correlation Analysis (TCA), which extracts both the shared and the domain-specific latent features to facilitate effective knowledge transfer. In TCA, all word features are first grouped into the shared and the domain-specific topics using a joint mixture model. Then the correlations between the two kinds of topics are inferred and used to induce a mapping between the domain-specific topics from different domains. Finally, both the shared and the mapped domain-specific topics are utilized to span a new shared feature space where the supervised knowledge can be effectively transferred. The experimental results on two real-world data sets justify the superiority of the proposed method over the stat-of-the-art baselines. Copyright © 2012, Association for the Advancement of Artificial Intelligence. All rights reserved.

关键词： Classification (of information)

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Topic Correlation Analysis for Cross-Domain Text Classification 26

Topic Correlation Analysis for Cross-Domain Text Classificat...

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26th AAAI Conference on Artificial Intelligence, AAAI 2012

作者： Li, Lianghao Jin, Xiaoming Long, Mingsheng Key Laboratory for Information System Security Ministry of Education Tsinghua National Laboratory for Information Science and Technology School of Software Tsinghua University Beijing China Department of Computer Science and Technology Tsinghua University Beijing China

关键词： Classification (of information)

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Video Copy Detection Based on Spatiotemporal Fusion Model

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Tsinghua science and technology 2012年第1期17卷 51-59页

作者： Jianmin Li Yingyu Liang Bo Zhang State Key Laboratory of Intelligent Technology and Systems Tsinghua National Laboratory for Information Science and Technology(TNList)Department of Computer Science and TechnologyTsinghua UniversityBeijing 100084China

Content-based video copy detection is an active research field due to the need for copyright pro- tection and business intellectual property protection. This paper gives a probabilistic spatiotemporal fusion approach for video copy detection. This approach directly estimates the location of the copy segment with a probabilistic graphical model. The spatial and temporal consistency of the video copy is embedded in the local probability function. An effective local descriptor and a two-level descriptor pairing method are used to build a video copy detection system to evaluate the approach. Tests show that it outperforms the popular voting algorithm and the probabilistic fusion framework based on the Hidden Markov Model, improving F-score （F1） by 8%.

关键词： video copy detection probabilistic graphical model spatiotemporal fusion model

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Analysis on the effect of prefix hijacking attack and Internet hierarchy

Analysis on the effect of prefix hijacking attack and Intern...

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2012 IEEE 12th International Conference on computer and information technology, CIT 2012

作者： Zhao, Jinjing Wen, Yan Beijing Institute of System Engineering Beijing China National Key Laboratory of Science and Technology on Information System Security Beijing China

ISBN: (纸本)9780769548586

The AS that hijacks a prefix can black hole and intercept all the hijacked traffic and thus, cause a denial-of-service attack or a man-in-the-middle attack against the prefix owner. There have been many incidents of IP prefix hijacking by BGP protocol in the Internet. In this paper, we conduct a systematic study on the impaction prefix hijacks launched at different position in the Internet hierarchy. The Internet is classified into three hierarchiescore layer, forwarding layer and marginal layer based on the power-law and commercial relations of autonomous systems (ASes). The impaction parameter, affected ASes set Nc, is analyzed for typical prefix hijacking events in different layers. The result shows that the hierarchical nature of network influences the prefix hijacking greatly. © 2012 IEEE.

关键词： Border Gateway Protocol

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A software watermark based architecture for cloud security

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14th Asia Pacific Web technology Conference, APWeb 2012

作者： Dai, Pengfei Wang, Chaokun Yu, Zhiwei Yue, Yongsheng Wang, Jianmin School of Software Tsinghua University Beijing 100084 China Tsinghua National Laboratory for Information Science and Technology China Key Laboratory for Information System Security Ministry of Education China Department of Computer Science and Technology Tsinghua University China

ISBN: (纸本)9783642292521

Cloud Computing has emerged as a resource sharing platform, which allows different service providers to deliver software as services. However, for many security sensitive applications such as critical data processing and e-business, we must provide necessary security protection for mitigating the threats in the shared open cloud infrastructures. In this paper, we propose a software watermark enhanced platform to assure that only the software with authorized watermark is allowed to run on the platform. Experimental results show that our architecture could provide a great protection with a small overhead. © 2012 Springer-Verlag Berlin Heidelberg.

关键词： Virtual machine

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A survey of virtualization technologies focusing on untrusted code execution

A survey of virtualization technologies focusing on untruste...

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6th International Conference on Innovative Mobile and Internet Services in Ubiquitous Computing, IMIS 2012

作者： Wen, Yan Zhao, Jinjing Zhao, Gang Chen, Hua Wang, Dongxia Beijing Institute of System Engineering Beijing China National Key Laboratory of Science and Technology on Information System Security Beijing China

ISBN: (纸本)9780769546841

In response to a continually advancing threat incurred by untrusted codes from Internet, various virtualization-based technologies have been proposed. Such technologies utilize a software layer, a virtual machine monitor or hyper visor, to achieve the highest privilege in a computer system. Generally, they construct isolated execution environments to run the untrusted code while shielding the other parts of the system from the potential security issues. In this paper, we survey a number of virtualization-based technologies with the goal of finding an appropriate candidate to serve as an untrusted code execution solution on PC platforms. Contenders are reviewed with a number of desirable properties, especially security, transparency portability and performance. © 2012 IEEE.

关键词： Virtualization

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A cloud-based watermarking method for health data security

A cloud-based watermarking method for health data security

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2012 10th Annual International Conference on High Performance Computing and Simulation, HPCS 2012

作者： Yu, Zhiwei Thomborson, Clark Wang, Chaokun Wang, Jianmin Li, Rui Department of Computer Science and Technology Tsinghua University Beijing China Department of Computer Science University of Auckland New Zealand School of Software Tsinghua University Key Laboratory for Information System Security Beijing China

ISBN: (纸本)9781467323598

Private health information once confined to local medical institutions is migrating onto the Internet as an Electronic Health Record (EHR) that is accessed by cloud computing. No matter where it is hosted, health data is subject to security breaches, privacy abuses, and access control violations. However, novel technologies have new vulnerabilities, and allow new mitigations. In this paper, we propose a watermarking method in the architecture of cloud computing, to mitigate the risks of insider disclosures. Our design and preliminary implementation are accomplished by exploiting the MapReduce mechanism in the cloudlet we built. Our evaluation shows that our proposal addresses all of the requirements of the Cloud Oriented Architecture (COA) framework of the Jericho Forum. © 2012 IEEE.

关键词： Cloud computing

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security Analysis of an Electronic Commerce Protocol Using Casper/FDR2

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Wuhan University Journal of Natural sciences 2012年第6期17卷 499-503页

作者： CHANG Yinlong HU Huaping Department of Mathematics and Computer Science/Key Laboratory of Information Security of Network System Fuzhou UniversityFuzhou 350108FujianChina School of Computer Science National University of Defense TechnologyChangsha 410073HunanChina

Researchers have proposed several security protocols to protect the electronic commerce security in these years;however,not all of them are secure *** article extends model checking method with Casper/FDR2 to model and analyze a new electronic *** are found in the protocol and their mechanisms are discussed.A variety of solutions are given to different security *** improved protocol is proven to be robust and secure.

关键词： Casper FDR2 electronic commerce model checking formal analysis

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