检索结果-内蒙古大学图书馆

2017 International Conference on Security, Pattern Analysis, and Cybernetics, SPAC 2017

作者： Rao, Yunbo Liu, Wei Wang, Shiqi Gou, Jianping He, Wu School of Information and Software Engineering University of Electronic Science and Technology of China Chengdu610054 China School of Computer Science and Telecommunications Engineering Jiangsu University Zhenjiang212013 China College of Movie and Media Sichuan Normal University Chengdu610068 China

ISBN: (纸本)9781538630167

Due to the time and hardware restriction, the amount of feedback information is limited in each image retrieval loop. To solve this problem, this paper proposes an effective relevance feedback (RF) method based on Support Vector Machine (SVM) framework, which increases the amount of feedback information by cluster analysis and utilizing unlabeled images to build SVM classifier. As a result, a pseudo-label strategy, consist of a feature subspace partition algorithm and a cluster analysis scheme, is proposed for unlabeled images selection. Experimental results demonstrate the relative high effectiveness of our proposed active framework. © 2017 IEEE.

关键词： Support vector machines

来源：评论

学校读者我要写书评

暂无评论

Information security policy compliance behavior based on comprehensive dimensions of information security culture: A conceptual framework 17

Information security policy compliance behavior based on com...

引用

2017 International Conference on Information System and Data Mining, ICISDM 2017

作者： Nasir, Akhyari Arshah, Ruzaini Abdullah Ab Hamid, Mohd Rashid Faculty of Computer Media and Tech. Management TATI University College Teluk Kalong Kemaman Terengganu24000 Malaysia Faculty of Computer Systems and Software Engineering Universiti Malaysia Pahang Lebuhraya Tun Razak Kuantan Pahang26300 Malaysia Faculty of Industrial Sciences and Technology Universiti Malaysia Pahang Lebuhraya Tun Razak Kuantan Pahang26300 Malaysia

ISBN: (纸本)9781450348331

The adherence of employees towards Information Security Policy (ISP) established in the organization is crucial in reducing information security risks. Some scholars have suggested that employees' compliance to ISP could be influenced by Information Security Culture (ISC) cultivated in the organization. Several studies on the impact of ISC towards ISP compliance have proposed different dimensions and factors associated to ISC with substantial differences in each finding. This paper is discussing an enhanced conceptual framework of ISP compliance behavior by addressing ISC as a multidimensional concept which consist of seven comprehensive dimensions. These new proposed ISC dimensions developed using all the key factors of ISC in literature and were aligned with the widely accepted concept of organizational culture and ISC. The framework also integrated with the most significant behavioral theory in this domain of study, which is Theory of Planned Behavior to provide more deep understanding and richer findings of the compliance behavior. This framework is expected to give more accurate findings on the relationships between ISC and ISP compliance behavior. © 2017 Association for Computing Machinery.

关键词： Personnel

来源：评论

学校读者我要写书评

暂无评论

WISERNet: Wider Separate-then-reunion Network for Steganalysis of Color Images

arXiv

引用

arXiv 2018年

作者： Zeng, Jishen Tan, Shunquan Liu, Guangqing Li, Bin Huang, Jiwu Guangdong Key Laboratory of Intelligent Information Processing National Engineering Laboratory for Big Data System Computing Technology Shenzhen University Shenzhen518060 China College of Computer Science and Software Engineering Shenzhen University Guangdong Key Lab. of Intelligent Info. Processing and Shenzhen Key Laboratory of Media Security Shenzhen University Shenzhen518060 China Peng Cheng Laboratory Shenzhen518052 China

Until recently, deep steganalyzers in spatial domain have been all designed for gray-scale images. In this paper, we propose WISERNet (the wider separate-then-reunion network) for steganalysis of color images. We provide theoretical rationale to claim that the summation in normal convolution is one sort of "linear collusion attack" which reserves strong correlated patterns while impairs uncorrelated noises. Therefore in the bottom convolutional layer which aims at suppressing correlated image contents, we adopt separate channel-wise convolution without summation instead. Conversely, in the upper convolutional layers we believe that the summation in normal convolution is beneficial. Therefore we adopt united normal convolution in those layers and make them remarkably wider to reinforce the effect of "linear collusion attack". As a result, our proposed wide-and-shallow, separate-then-reunion network structure is specifically suitable for color image steganalysis. We have conducted extensive experiments on color image datasets generated from BOSSBase raw images and another large-scale dataset which contains 100,000 raw images, with di_erent demosaicking algorithms and downsampling algorithms. The experimental results show that our proposed network outperforms other state-of-the-art color image steganalytic models either hand-crafted or learned using deep networks in the literature by a clear margin. Specifically, it is noted that the detection performance gain is achieved with less than half the complexity compared to the most advanced deeplearning steganalyzer as far as we know, which is scarce in the literature. Copyright © 2018, The Authors. All rights reserved.

关键词： Steganography

来源：评论

学校读者我要写书评

暂无评论

Towards ‘verifying’ a water treatment system

arXiv

引用

arXiv 2017年

作者： Wang, Jingyi Jun, Sun Jia, Yifan Qin, Shengchao Xu, Zhiwu Singapore University of Technology and Design School of Computing Media and the Arts Teesside University College of Computer Science and Software Engineering Shenzhen University TUV-SUD Asia Pacific Pte Ltd Singapore

Modeling and verifying real-world cyber-physical systems is challenging, which is especially so for complex systems where manually modeling is infeasible. In this work, we report our experience on combining model learning and abstraction refinement to analyze a challenging system, i.e., a real-world Secure Water Treatment system (SWaT). Given a set of safety requirements, the objective is to either show that the system is safe with a high probability (so that a system shutdown is rarely triggered due to safety violation) or not. As the system is too complicated to be manually modeled, we apply latest automatic model learning techniques to construct a set of Markov chains through abstraction and refinement, based on two long system execution logs (one for training and the other for testing). For each probabilistic safety property, we either report it does not hold with a certain level of probabilistic confidence, or report that it holds by showing the evidence in the form of an abstract Markov chain. The Markov chains can subsequently be implemented as runtime monitors in SWaT. Copyright © 2017, The Authors. All rights reserved.

关键词： Embedded systems

来源：评论

学校读者我要写书评

暂无评论

Optimizing guidance for an active shooter event

Optimizing guidance for an active shooter event

引用

IEEE International Conference on Robotics and Automation (ICRA)

作者： Sean Gunn Peter B. Luh Xuesong Lu Brock Hotaling College of Computer Science and Electronic Engineering Hunan University Changsha China Shenzhen Key Laboratory of Media Security Shenzhen University Shenzhen China Institute of Software Application Technology Guangzhou Branch of Institute of Software Chinese Academy of Science Guangzhou China

It is unclear what triggers the behavior of active shooters, but their consequences are severe. There is opportunity to implement an automated response system capable of delivery guidance to evacuees' to aide people to safety. Optimizing guidance delivery is challenging because active shooter incidents evolve quickly and are unpredictable. In this paper, we develop a new problem formulation specific for active shooter events by utilizing the structure of each room. To effectively solve this problem, a divide-and-conquer approach is deployed to split evacuees into groups. The egress routes are decomposed and coordinated for each group are optimized using stochastic dynamic programming. Numerical testing and simulation show our solution with a safe room the solution fast relevant to shooting events and effectively.

关键词： Buildings Optimization Mathematical model Computational modeling Law enforcement Stress Probabilistic logic

来源：评论

学校读者我要写书评

暂无评论

Guest editorial: Challenges of embedded systems as they evolve into M2M, internet of things

引用

ACM Transactions on Embedded Computing Systems 2016年第2期15卷 1–2页

作者： Rho, Seungmin Rahayu, Wenny Min, Geyong Department of Media Software Sungkyul University Anyang-si Korea Republic of Department of Computer Science and Information Technology La Trobe University Australia College of Engineering Mathematics and Physical Sciences University of Exeter United Kingdom

With the rapid progress in information communication technology (ICT), multidisciplinary research fields such as Internet of Things (IoT), machine to machine (M2M), and embedded systems have been widely explored in recent years. As a result, a wide range of research opportunities have surfaced, with new challenges and research issues in IoT areas to be investigated and evaluated. This special issue on new technologies and research trends of embedded computing and systems for IoT and M2M provides high-quality contributions addressing related theoretical and practical aspects of associated technologies and their applications.

关键词： Internet of things

来源：评论

学校读者我要写书评

暂无评论

A Beautiful Story behind the Battle of Privacy

A Beautiful Story behind the Battle of Privacy

引用

IEEE International Conference on Internet of Things

作者： Tianyuan Liu Guoyun Li Yaozhi Zhang Yuqing Sum School of Computer Science and Technology Shandong University Jinan China Software College Shandong University JinanChina Engineering Research Center of Digital Media Technology Ministry of Education of PRC

ISBN: (纸本)9781509058815

Mobile intelligent devices are widely used in our daily lives. User private information can be easily accessed by mobile apps, which are facing fierce threats. Although Android offers a native permission mechanism and there are many security assistants or research works focus on improving privacy protection, there is still a gap on the context aware and personalized authorization for user requirements. We design and implement a novel authorization mechanism on Android which takes into account both user preference and context This video describes a fictitious romantic story to show the inspiration behind our design. The story shows the threats we are facing in the mobile scenarios and the gap between existing solutions and user privacy demands. A brief introduction of our model is also given in the video, including the outline of our design and a short clip which shows the evaluation of our prototype implementation on real device.

关键词： Mobile Privacy Context Aware User Preference

来源：评论

学校读者我要写书评

暂无评论

Coherent Photon Mapping on the Intel MIC Architecture

引用

Journal of computer Science & technology 2015年第3期30卷 519-527页

作者：康春萌王璐王佩徐延宁孟祥旭 School of Computer Science and Technology Shandong University Jinan 250101 China Engineering Research Center of Digital Media Technology Ministry of Education Jinan 250101 China Software College Shandong University Jinan 250101 China

Photon mapping is a global illumination algorithm which is composed of two steps： photon tracing and photon searching. During photon searching step, each shading point needs to search the photon-tree to find k-neighbouring photons for reflected radiance estimation. As the number of shading points and the size of photon-tree are dramatically large, the photon searching step is time consuming. We propose a parallel photon searching algorithm by using radiance estimation approach for coherent shading points on the Intel Many Integrated Core （MIC） Architecture. In order to efficiently use single instruction multiple data （SIMD） units, shading points are clustered by similarity first （every cluster contains 16 shading-points）, and an initial neighbouring scope is searched from the photon-tree for each cluster. Then we use 16-wide SIMD units by performing k-NN searching from the initial neighbouring scope for those 16 shading-points in a cluster in parallel. We use the method to simulate some global illumination scenes on Intel Xeon processors and Intel Xeon Phi^TM coprocessors. The comparison results with existing photon mapping techniques indicate that our method gives significant improvement in speed with the same accuracy.

关键词： photon mapping parallel processing SIMD

来源：评论

学校读者我要写书评

暂无评论

Detecting Malicious Behavior and Collusion for Online Rating System

Detecting Malicious Behavior and Collusion for Online Rating...

引用

IEEE International Conference on Trust, Security and Privacy in Computing and Communications (TrustCom)

作者： Liu Cao Yuqing Sun Shaoqing Wang Mingzhu Li Ministry of Education of PRC Engineering Research Center of Digital Media Technology School of Computer Science and Technology Shandong University Jinan China Taishan College Shandong University Jinan China School of-Software Engineering Shandong University Jinan China

ISBN: (纸本)9781509032068

Since the collective ratings and reviews on an online rating system have a high influence on user decisions, there exist more and more fraudulent behaviors, such as "ballot stuffing" and "bad-mouthing". Most of the current methods solve these problems by detecting one or a few malicious patterns. But they cannot solve these patterns simultaneously and cannot solve the case where dominating population on an item is malicious. In this paper, we investigate malicious behaviors and collusion from three aspects: the normal standards are learned from crowd behaviors rather than predefined patterns, a behavior anomaly is considered from both current and historical views, and the negative influence is also taken into account. We propose a set of metrics to comprehensively detect malicious behavior patterns. How much a user is deviated the crowds. The Behavior-Turbulence metric detects how different a user is from his/her historical behaviors, and theUser Behavior Influence metric measures how much negative influence a user may cause. By orchestrating these statistical metrics, different user anomaly behaviors can be recognized. Compared with previous methods, our metrics can not only solve the problem that the major population is malicious, but also collective behavior influence metric k and coherence metric so of a group of people. Our method is verified against some real datasets and the results show that it outperforms the existing models.

关键词： Measurement Motion pictures Sociology Statistics Data models Sun Standards

来源：评论

学校读者我要写书评

暂无评论

Using pre-test to validate the Questionnaire for Website Usability (QWU)

Using pre-test to validate the Questionnaire for Website Usa...

引用

International Conference on software Engineering and computer Systems (ICSECS)

作者： Nur Sukinah Aziz Adzhar Kamaludin Faculty of Computer Systems & Software Engineering Universiti Malaysia Pahang Kuantan Pahang Malaysia Faculty of Computer Media and Technology Management TATI University College Kemaman Terengganu Malaysia

Usability is one of important criteria to measure website quality. One of the approaches to measure website usability is survey using questionnaire. The aim of this study is to validate the questionnaire instrument to measure the highest education institution or university website in context of usability. Pre-test are used to validate the instrument for this study. The questionnaire instrument has 9 constructs and 51 item of questionnaire. 30 respondents were involved in this study. After analyzed the result, 7 items need to delete from the instrument. Apart from the more technical and general aspects the feedback from the respondents was useful in identifying problematic questions and it was suggested that some questions need to deleted as they were seen to have same meaning with other questions and too difficult to answer for several reason such as because the sentences of the question is difficult to understand and the level of understanding between the question and respondent.

关键词： Usability ISO Standards Web sites Instruments computers Navigation

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：