检索结果-内蒙古大学图书馆

International IEEE Conference on Signal-Image Technologies and Internet-Based System

作者： Rainer Knauf Yukiko Yamamoto Yoshitaka Sakurai Kinshuk Faculty of Computer Science and Automation Ilmenau University of Technology Ilmenau Germany School of Information Environment Tokyo Denki University Inzai Japan The School of Interdisciplinary Mathematical Sciences Meiji University Nakano Japan School of Computing and Information Systems Athabasca University Athabasca Canada

In this paper, we introduce a refined Educational Data Mining approach, which refrains from explicit learner modeling along with an evaluation concept. We use a Data Mining technology, which models students' learning characteristics by considering real data instead of deriving their characteristics explicitly. It aims at mining course characteristics similarities of former students' study traces and utilizing them to optimize curricula of current students based to their performance traits revealed by their educational history. This refined technology generates suggestions of personalized curricula. The technology includes an adaptation mechanism, which compares recent data with historical data to ensure that the similarity of mined characteristics follow the dynamic changes affecting curriculum (e.g., revision of course contents and materials, and changes in teachers, etc.). Finally, the paper shows some pre-validation results and approaches for a final validation.

关键词： Correlation History Educational institutions Computational modeling Databases Data mining Materials

来源：评论

学校读者我要写书评

暂无评论

An empirical analysis of social interaction on tobacco-oriented social networks

An empirical analysis of social interaction on tobacco-orien...

引用

2013 International Conference for Smart Health, ICSH 2013

作者： Liang, Yunji Zheng, Xiaolong Zeng, Daniel Dajun Zhou, Xingshe Leischow, Scott School of Computer Science Northwestern Polytechnical University Xi'an China Department of Management Information System University of Arizona Tucson AZ United States State Key Laboratory of Management and Control for Complex Systems Institute of Automation Chinese Academy of Sciences Beijing China Dongguan Research Institute of CASIA Cloud Computing Center Chinese Academy of Sciences Songshan Lake Dongguan China Mayo Clinic in Arizona Phoenix AZ United States

ISBN: (纸本)9783642398438

Social media is widely utilized in the tobacco control campaigns. It is a great challenge to evaluate the efficiency of tobacco control policies on social network sites and find gaps among tobacco-oriented social networks. In this paper, we construct three tobacco-oriented social networks according to user interaction on Facebook tobacco-related fan pages. We further investigate the interaction patterns including temporal distribution and interaction patterns to reveal the differences of tobacco-oriented social networks. Our empirical analysis demonstrates that: 1) the user interaction on the pro-tobacco fan pages is more active. Fan pages for tobacco promotion are more successful in obtaining more user attention. 2) The gap between tobacco promotion and tobacco control is widening. These empirical results can provide us significant insights into understanding the evolutionary patterns of social interaction in tobacco-oriented social networks and further help the government departments of tobacco control to make reasonable decisions. © 2013 Springer-Verlag.

关键词： Tobacco

来源：评论

学校读者我要写书评

暂无评论

Sketch-based interface for creation and visual representation of hyper videos

引用

Ruan Jian Xue Bao/Journal of Software 2013年第SUPPL.2期24卷 32-41页

作者： Du, Yi Lü, Fei Tian, Feng Hou, Wen-Jun Ma, Cui-Xia Dai, Guo-Zhong Scientific Data Center Computer Network Information Center The Chinese Academy of Sciences Beijing 100190 China Beijing Key Laboratory of Human-Computer Interaction Institute of Software Chinese Academy of Sciences Beijing 100190 China Beijing Key Laboratory of Network Systems and Network Culture Beijing University of Posts and Telecommunications Beijing 100876 China Automation School Beijing University of Posts and Telecommunications Beijing 100876 China

Due to its nonlinear potential, hyper video offers improvement in users' browsing efficiency and visual information's representation ability compared with that of traditional video. Based on the advantages of sketch and sketch based interface, this paper provides an intuitive sketch based interface for supporting hyper video creation to describe users' intention and improve user experiences. Furthermore, a force-directed graph layout algorithm for representing video semantics is discussed. This algorithm constructs a model for video semantics. It brings attributions such as temporal or spatial information, video structure and constraints between video clips into mass of nodes and attractive forces or repulsive force of edges in the force-directed graph. Result shows that it is an intuitive method to represent the dynamitic process of creation and modification for hyper videos. © Institute of Software Chinese Academy of Sciences.

关键词： Directed graphs

来源：评论

学校读者我要写书评

暂无评论

Computing dynamically equivalent realizations of biochemical reaction networks with mass conservation

引用

AIP Conference Proceedings 2013年第1期1558卷 2356-2359页

作者： János Rudan Gábor Szederkényi Katalin M. Hangos Faculty of Information Technology Pázmány Péter Catholic University Práter u. 50/a H-1083 Budapest Hungary Faculty of Information Technology Pázmány Péter Catholic University Práter u. 50/a H-1083 Budapest Hungary and Process Control Research Group Computer and Automation Research Institute Hungarian Academy of Sciences. Hungary Process Control Research Group Computer and Automation Research Institute Hungarian Academy of Sciences. Kende u. 13-17 H-1111 Budapest Hungary and Dept. of Electrical Engineering and Information Systems Faculty of Information Technology Univer Hungary

An algorithm for the computation of mass conservative dynamically equivalent chemical reaction network structures is proposed in this paper. The algorithm is formulated in an optimization-based framework as a mixed-in...

关键词：

来源：评论

学校读者我要写书评

暂无评论

Tangent Barrier Lyapunov Functions for the Control of Output-Constrained Nonlinear systems

引用

IFAC Proceedings Volumes 2013年第20期46卷 449-455页

作者： Zhong-Liang Tang Keng Peng Tee Wei He Institute of Intelligent Systems and Information Technology (ISIT) and School of Computer and Science Engineering University of Electronic Science and Technology of China Chengdu 611731 China Institute for Infocomm Research A *STAR Singapore 138632 Singapore Robotics Institute (RI) and School of Automation Engineering University of Electronic Science and Technology of China Chengdu 611731 China

In this paper, we present a systematic control design for strict-feedback nonlinear systems with output constraints using tangent Barrier Lyapunov Functions (BLFs-Tan). Both symmetric and asymmetric BLF-Tan based backstepping control design methods are developed. It is proved that with the proposed approach and Lyapunov synthesis, the output constraints are not violated, all signals in the closed-loop systems are bounded, and asymptotical tracking is achieved. Through the simulation, we also perform a comparison study between BLF-Tan and the logarithmic BLF (BLF-Log) to illustrate the difference in control performance, and show that the performance of asymmetric BLF-Tan based controller depends on the position of initial tracking error with respect to the transformed constraint boundary.

关键词： Output Constraints Tangent Barrier Lyapunov Functions Backstepping Design

来源：评论

学校读者我要写书评

暂无评论

ATP production optimization in biochemical mass action models with protein turnover

引用

IFAC Proceedings Volumes 2013年第14期46卷 42-47页

作者： Dávid Csercsik Gábor Szederkényi Faculty Information Technology Pázmány Peter Catholic University P.O. Box 278 H-1444 Budapest Hungary Process Control Research Group Systems and Control Laboratory Computer and Automation Research Institute Hungarian Academy of Sciences H-1518 P.O. Box 63 Budapest Hungary

We introduce a simple approach to account for the ATP consumption and production in the case of mass action models of metabolic pathways including protein turnover. Under some simplifying assumptions, the method makes it possible to characterize the optimal rate of enzyme synthesis if the substrate concentrations and other rate constants are known. Furthermore we demonstrate that the proposed approach is capable of the comparison of the efficiency of different feedback laws in dynamic environment, considering time-varying substrate concentration.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Meanshift algorithm based on kernel bandwidth adaptive adjust

Meanshift algorithm based on kernel bandwidth adaptive adjus...

引用

Chinese Control Conference (CCC)

作者： Yunji Zhao Hailong Pei Baoluo Liu School of Electrical Engineering and Automation Henan Polytechnic University Jiaozuo 454000 China Key Laboratory of Autonomous Systems and Networked Control (South China University of Technology) Ministry of Education Guangzhou 510640 China Department of Computer and Information Engineering Luoyang Institute of Science and Technology Henan 471023 China

Object tracking algorithm based on Meanshift algorithm with fixed kernel bandwidth does not realize object tracking correctly with the scale of object changed. According to this, a scheme of kernel bandwidth adaptive adjustment and predictions of object cancroids based on Kalman filter is proposed in this paper. In this algorithm, Object location predicted based on Kalman filter is used to initialize the Meanshift algorithm. The variation tendency of the kernel bandwidth is also determined based on Kalman filter. Experiment results demonstrate that this algorithm can realize the kernel bandwidth adaptive adjustment and object location prediction. The robustness of the tracking algorithm is also enhanced.

关键词： Prediction algorithms Kalman filters Electronic mail Kernel Bandwidth Robustness Conferences

来源：评论

学校读者我要写书评

暂无评论

Ontology-based support for security requirements specification process

Ontology-based support for security requirements specificati...

引用

Confederated International Workshops on On the Move to Meaningful Internet systems, OTM 2012: OTM Academy, Industry Case Studies Program, EI2N 2012, INBAST 2012, META4eS 2012, OnToContent 2012, ORM 2012, SeDeS 2012, SINCOM 2012, and SOMOCO 2012

作者： Daramola, Olawande Sindre, Guttorm Moser, Thomas Department of Computer and Information Sciences Covenant University Ota Nigeria Norway Christian Doppler Laboratory for Software Engineering Integration for Flexible Automation Systems Vienna University of Technology Austria

ISBN: (纸本)9783642336171

The security requirements specification (SRS) is an integral aspect of the development of secured information systems and entails the formal documentation of the security needs of a system in a correct and consistent way. However, in many cases there is lack of sufficiently experienced security experts or security requirements (SR) engineer within an organization, which limits the quality of SR that are specified. This paper presents an approach that leverages ontologies and requirements boilerplates in order to alleviate the effect of lack of highly experienced personnel for SRS. It also offers a credible starting point for the SRS process. A preliminary evaluation of the tool prototype - ReqSec tool - was used to demonstrate the approach and to confirm its usability to support the SRS process. The tool helps to reduce the amount of effort required, stimulate discovery of latent security threats, and enables the specification of good quality SR. © 2012 Springer-Verlag.

关键词： Ontology

来源：评论

学校读者我要写书评

暂无评论

Managing implicit requirements using semantic case-based reasoning research preview

Managing implicit requirements using semantic case-based rea...

引用

18th Working Conference on Requirements Engineering: Foundation for Software Quality, REFSQ 2012

作者： Daramola, Olawande Moser, Thomas Sindre, Guttorm Biffl, Stefan Department of Computer and Information Science Norwegian University of Science and Technology Trondheim Norway Christian Doppler Laboratory for Software Engineering Integration for Flexible Automation Systems Vienna University of Technology Austria

ISBN: (纸本)9783642287138

[Context and motivation] Implicit requirements (ImRs) are defined as requirements of a system which are not explicitly expressed during requirements elicitation, often because they are considered so basic that developers should already know them. Many products have been rejected or users made unhappy because implicit requirements were not sufficiently addressed. [Question/Problem] Requirement management tools have not addressed the issue of managing ImRs, also despite the challenges of managing ImRs that exist in practice the issue has not received sufficient attention in the literature. [Principal Idea/results] This planned research will investigate how automated support can be provided for managing ImRs within an organizational context, which is currently lacking in practice. This work proposed an approach that is based on semantic case-based reasoning for managing ImRs. [Contribution] We present the concept of a tool which enables managing of ImRs through the analogy-based requirements reuse of previously known ImRs. This ensures the discovery, structured documentation, proper prioritization, and evolution of ImRs, which improves the overall success of software development processes. © 2012 Springer-Verlag.

关键词： Case based reasoning

来源：评论

学校读者我要写书评

暂无评论

Multi-stage multi-task feature learning

The Journal of Machine Learning Research

引用

The Journal of Machine Learning Research 2013年第1期14卷

作者： Kevin Murphy Bernhard Schölkopf Pinghua Gong Jieping Ye Changshui Zhang Google MPI for Intelligent Systems State Key Laboratory on Intelligent Technology and Systems Tsinghua National Laboratory for Information Science and Technology Department of Automation Tsinghua University Beijing China Computer Science and Engineering Center for Evolutionary Medicine and Informatics The Biodesign Institute Arizona State University Tempe AZ

Multi-task sparse feature learning aims to improve the generalization performance by exploiting the shared features among tasks. It has been successfully applied to many applications including computer vision and biomedical informatics. Most of the existing multi-task sparse feature learning algorithms are formulated as a convex sparse regularization problem, which is usually suboptimal, due to its looseness for approximating an l0-type regularizer. In this paper, we propose a non-convex formulation for multi-task sparse feature learning based on a novel nonconvex regularizer. To solve the non-convex optimization problem, we propose a Multi-Stage Multi-Task Feature Learning (MSMTFL) algorithm; we also provide intuitive interpretations, detailed convergence and reproducibility analysis for the proposed algorithm. Moreover, we present a detailed theoretical analysis showing that MSMTFL achieves a better parameter estimation error bound than the convex formulation. Empirical studies on both synthetic and real-world data sets demonstrate the effectiveness of MSMTFL in comparison with the state of the art multi-task sparse feature learning algorithms.

关键词： multi-stage multi-task learning non-convex sparse learning

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：