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Combination of dependence, relevance and structure for effective web retrieval

Journal of Applied sciences 2012年第19期12卷 2035-2043页

作者： Agavriloaei, I. Rauber, A. Craus, M. Department of Computer Science and Engineering Gheorghe Asachi Technical University of Iasi 27 Mangeron Blvd Iasi 700050 Romania Institute of Software Technology and Interactive Systems Favoritenstrasse 9-1 111 88 A-1040 Vienna Austria

This study presents a new four-model based approach regarding the Ad hoc retrieval task. The approach combines dependence and relevance models with filed-based techniques and the resulted retrieval lists are processed by applying a spam filtering phase. The parameters' estimation for each model is accomplished by optimizing the Mean Average Precision (MAP). All experiments are performed on the Category B part of ClueWeb09 collection. Experimental results indicate that significant improvements are possible with regards to the retrieval effectiveness by adding a field-based modeling and a spam filtering to dependence and relevance models. Also, the results of this study show that the additive feature between methods is conserved. © 2012 Asian Network for Scientific Information.

关键词： Bandpass filters

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IMAGE SCALING METHOD BASED ON PROTECTED REGION

IMAGE SCALING METHOD BASED ON PROTECTED REGION

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2012 IEEE 2nd International Conference on Cloud Computing and Intelligence systems

作者： Lisha Hou Junping Du Lingling Zi Min Zuo Katsunori Shimohara Beijing Key Laboratory of Intelligent Telecommunications Software and Multimedia School of Computer ScienceBeijing University of Posts and Telecommunications School of Computer and Information Engineering Beijing Technology and Business University Department of Information Systems Design Doshisha University

To solve the problem of seriously distortion while enlarging images via seam carving,we proposed an improved method in this ***,we enlarged the image with hierarchical interpolation model to the size of power of two times of original,which is closest to target size,while applying iterative curvature-based interpolation algorithm to protected areas and nearest interpolation to non-protected *** then,some seams to the target size were avoided via seam carving *** the subjective analysis and objective evaluation,the experiment on both standard library images and spatial images showed that the proposed method gave satisfactory results.

关键词： Image scaling ICBI Seam carving Protect region

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Reducing the Incidence of Unintended, Human-Caused Information Flows in Enterprise systems

Reducing the Incidence of Unintended, Human-Caused Informati...

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International Workshop on Enterprise Distributed Object Computing, EDOCW

作者： Colin Atkinson Florian Barth Ralph Gerbig Felix Freiling Sebastian Schinzel Frank Hadasch Alexander Maedche Benjamin Müller Chair of Software Engineering University of Mannheim Mannheim Germany Chair of Information Systems IV University of Mannheim Mannheim Germany Department of Computer Science Friedrich-Alexander-Universität Erlangen-Nürnberg Germany

Research in enterprise system security has largely focused on the development of theoretical models capable of demonstrating mathematically that they possess desired security properties. However, recent results confirm that many of these models cannot be applied in practice because of the unpredictability of human participants' behavior in business processes. Moreover, while malicious attacks remain a significant problem, the majority of user-caused information leaks in Enterprise systems are unintentional (or have many unintentional components) and could potentially be prohibited if explicitly recognized and appropriately modeled. In this paper we argue that approaches for achieving information flow security in enterprises need to combine process and policy understandability with usability of the enforcement mechanisms. We present a modeling approach that allows security policies to be formulated in such a way that (1) they are aligned to the business processes executed in an enterprise, (2) are understandable by all relevant stakeholders, and (3) can be semi-automatically transformed into run-time enforcement mechanisms.

关键词： Humans Companies Interviews Information security

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STUDY AND IMPLEMENTATION OF PERSONALIZED SEARCHING SYSTEM BASED ON USER'S INTEREST MODEL

STUDY AND IMPLEMENTATION OF PERSONALIZED SEARCHING SYSTEM BA...

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2012 IEEE 2nd International Conference on Cloud Computing and Intelligence systems

作者： Xue Li Junping Du Lingling Zi Katsunori Shimohara Beijing Key Laboratory of Intelligent Telecommunications Software and Multimedia School of Computer ScienceBeijing University of Posts and Telecommunications School of Electronic and Information Engineering Liaoning Technical University Department of Information Systems Design Doshisha University

The common personalized searching technology can neither make full use of features of domain knowledge,nor understand the user's special needs in this *** at solving this issue,this paper studies personalized searching technology combining the characteristics of *** tourism fields,this paper designs and realizes a user-based personalized searching system,and provides with its general framework and implementation of system *** tourism field knowledge database is firstly *** to the user's browsing history and personal information,this paper builds the user-interest model based on tourism areas,and then realizes the personalized information recommendation technology and information expanding *** results show that the information searching based on domain knowledge and tourism information achieves better results in recall rate,accuracy and recommend function than traditional searching engine.

关键词： Personalized searching Tourism area Regional weight Attractions priority

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A memory enhanced DNSGA-II algorithm for dynamic multi-objective optimization

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ICIC Express Letters 2012年第7期6卷 1839-1844页

作者： Liu, Min Zeng, Wenhua Zhao, Jianfeng Cognitive Science Department Xiamen University Xiamen 361005 China Fujian Provincial Key Laboratory of Brain-Like Intelligent Systems Xiamen University Xiamen 361005 China Department of Computer Science and Engineering Zhangzhou Normal University No. 36 Xianqianzhi Street Zhangzhou 363000 China Software School Xiamen University Xiamen 361005 China

Although dynamic non-dominated sorting algorithm II (DNSGA-II) is a well-known dynamic evolutionary multi-objective optimization algorithm, it lacks memory ability. For this reason, we propose a memory enhanced DNSGA-II algorithm (denoted by DNSGA-II-DM). Specifically, a non-dominated set-based memory scheme (NSMS) is designed to reuse past useful information. In the NSMS, whenever there is an environmental change, a bunch of non-dominated individuals are stored into a memory pool by a sample procedure and a store procedure. The past optimal solutions stored in the memory pool are reused to rapidly respond to the new change by a retrieve procedure. In addition, a differential evolution operator is introduced as a new search engine to replace the original genetic operator of DNSGA-II. Simulation results on three benchmark test problems demonstrate that DNSGA-II-DM is able to converge better and find a better spread of solutions than DNSGA-II. © 2012 ICIC International.

关键词： Multiobjective optimization

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3.2.2 Enhancing the System Development Process Performance: a Value-Based Approach

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INCOSE International Symposium 2012年第1期22卷 401-415页

作者： Mastrofini, Manuel Cantone, Giovanni Seaman, Carolyn Shull, Forrest Diep, Madeline Falessi, Davide University of Rome Tor Vergata Department of Computer Science Systems and Production Via del Politecnico 1 Rome00133 Italy Fraunhofer Center for Experimental Software Engineering and University of Maryland Baltimore County Department of Information Systems. ITE. Building 1000 Hilltop Circle BaltimoreMD21250 United States Fraunhofer Center for Experimental Software Engineering 5825 University Research Court Suite 1300 College ParkMD20740-3823 United States and University of Rome Tor Vergata Department of Computer Science Systems and Production Via del Politecnico 1 Rome00133 Italy

When planning or controlling the system development process, a project leader needs to make decisions which take into account a number of aspects, including: availability of assets and competences, previously enacted processes in the organization, certifications the system is required to obtain, standards to comply with, interactions among process activities, contextual factors and constraints, and allocated budget and schedule. In this paper we propose a value-based approach for supporting decision making. The aim is to provide supportive information for decisions related to the system verification process. This would in turn enhance the performance of system development process by supporting the decision making process for complex systems. We report both academic and industrial empirical evaluations, which demonstrate the feasibility and effectiveness of our proposal, and thus prompt us to refine and extend our approach to sub-processes other than verification. © 2012 The Authors.

关键词： Decision making

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Model-driven tenant development for PaaS-based SaaS

Model-driven tenant development for PaaS-based SaaS

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IEEE International Conference on Cloud Computing Technology and science (CloudCom)

作者： Wei-Tek Tsai Wu Li Babak Esmaeili Wenjun Wu Department of Computer Science and Technology INLIST Tsinghua University Beijing China School of Computing Informatics and Decision Systems Engineering Arizona State University Tempe AZ USA State Key Laboratory of Software Development Environment Beihang University Beijing China

This paper proposes key SaaS (software-as-a-Service) design strategies for those SaaS systems that run on top of a commercial PaaS (Platform-as-a-Service) system such as GAE (Google App Engine)[1]. Specifically, this paper proposes a model-based approach for customization, multi-tenancy architecture, scalability, and redundancy & recovery techniques for GAE. The ACDATER (Actors, Conditions, Data, Actions, Timing, Events, and Relationship) model is used for various features, and then automated code generation is used to generate code based on the model specified. Simulation can be performed to ensure correctness before deployment.

关键词： software as a service Databases Computational modeling Scalability Reliability Data models

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An evolving recommender-based framework for virtual learning communities

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International Journal of Web Based Communities 2012年第3期8卷 322-332页

作者： Fraij, Fares Al-Dmour, Ayman Al-Hashemi, Rafeeq Musa, Ahmed Department of Software Engineering Al-Hussein Bin Talal University P.O. Box 20 Ma'an 71111 Jordan Department of Computer Information Systems Al-Hussein Bin Talal University P.O. Box 20 Ma'an 71111 Jordan Department of Computer Science Al-Hussein Bin Talal University P.O. Box 20 Ma'an 71111 Jordan Department of Computer Engineering Al-Hussein Bin Talal University P.O. Box 20 Ma'an 71111 Jordan

This article presents a recommender framework to provide personalised suggestions for learners taking introductory undergraduate courses. The framework utilises memory-based collaborative filtering algorithm combined with an imbedded web crawler to update learning material. The process of providing recommendation is divided into four steps: learner model extraction, neighbourhood formation, top-N recommendation presentation, and material update. The framework was implemented and has been successfully tested on real learners taking an introductory mathematics course. The learners of the course were divided into two groups. One of the groups, control group, was taught the material of the course using the traditional face-to-face approach. However, the students in the other group, experimental group, had the advantage to use the framework. The performance of the learners in both groups was tested and the results showed that the learners in the experimental group outperformed their counterparts in the control group. Copyright © 2012 Inderscience Enterprises Ltd.

关键词： Collaborative filtering

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Digital art: Evaluation, appreciation, critique (invited SIG)

Digital art: Evaluation, appreciation, critique (invited SIG...

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30th ACM Conference on Human Factors in Computing systems, CHI 2012

作者： England, David Fantauzzacoffin, Jill Bryan-Kinns, Nick Latulipe, Celine Candy, Linda Sheridan, Jennifer School of Computing and Maths Liverpool John Moores University Liverpool United Kingdom Department of Digital Media Georgia Institute of Technology Atlanta GA United States School of Electronic Engineering and Computer Science Queen Mary University of London London. E1 4N United Kingdom Department of Software and Information Systems University of North Carolina at Charlotte Charlotte NC United States Creativity and Cognition Studios University of Technology Sydney NSW Australia BigDog Interactive Ltd. London United Kingdom

ISBN: (纸本)9781450310161

This SIG examines the vexed question of evaluation of Digital Art and how lessons on evaluation can be exchanged between the arts and mainstream HCI. We start by looking at critiques of standard approaches to evaluation in HCI. We then look at approaches, which have been developed in Digital Art to merge qualitative and quantitative methods. These investigations set the agenda for the SIG with the aim of uncovering the audience's knowledge and attempts at Digital Art evaluation, appreciation and critique. The chief outcome will be an exchange of experiences and proposals for ways forward for both the Digital Arts community and the broader CHI community. © 2012 Authors.

关键词： Arts computing

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Generation of discrete frequency and wavelength for secured computer networks system using integrated ring resonators

Generation of discrete frequency and wavelength for secured ...

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International Conference on computer and Communication engineering, ICCCE

作者： I. S. Amiri k. Sarkhanlou A. Nikoukar A. Shahidinejad J. Ali P. P. Yupapin Institute of Advanced Photonics Science Nanotechnology Research Alliance Universiti Teknologi Malaysia (UTM) Johor Bahru Malaysia Department of Computer Software Engineering Comprehensive University of Applied and Practical Sciences Ardebil Iran Faculty of Computer Science & Information Systems (FCSIS) Universiti Teknologi Malaysia (UTM) Johor Bahru Malaysia Advanced Research Center for Photonics Faculty of Science King Mongkut's Institute of Technology Ladkrabang Bangkok Thailand

In this study, a system of discrete optical pulse generation via a series of microring resonator (MRR) is presented. Chaotic signals can be generated by an optical soliton or a Gaussian pulse within a MRR system. Large bandwidth signals of optical soliton are generated by input pulse propagating within the MRRs, which can be used to form continuous wavelength or frequency with large tunable channel capacity. Therefore, distinguished discrete wavelength or frequency pulses can be generated by using localized spatial pulses via a networks communication system. Selected discrete pulses are more suitable to generate high-secured quantum codes because of the large free spectral range (FSR). Quantum codes can be generated by using a polarization control unit and a beam splitter, incorporating to the MRRs. In this work, frequency band of 10.7 MHz and 16 MHz and wavelengths of 206.9 nm, 1448 nm, 2169 nm and 2489 nm are localized and obtained which can be used for quantum codes generation applicable for secured networks communication.

关键词： Optical solitons Optical filters Optical pulses Optical ring resonators Nonlinear optics Optical polarization

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