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28th AAAI Conference on Artificial Intelligence, AAAI 2014

作者： Dredze, Mark Cheng, Renyuan Paul, Michael J. Broniatowski, David Human Language Technology Center of Excellenc Johns Hopkins University BaltimoreMD21211 United States Department of Computer Science Johns Hopkins University BaltimoreMD21211 United States Department of Engineering Management and Systems Engineering George Washington University WashingtonDC United States

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Discovering perceptions in online social media: A probabilistic approach

Discovering perceptions in online social media: A probabilis...

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作者： Doran, Derek Gokhale, Swapna S. Dagnino, Aldo Department of Computer Science and Engineering Kno.e.sis Research Center Wright State University DaytonOH45435 United States Department of Computer Science and Engineering University of Connecticut StorrsCT06269 United States Industrial Software Systems Data Analytics ABB Corporate Research 940 Main Campus Drive RaleighNC27603 United States

People across the world habitually turn to online social media to share their experiences, thoughts, ideas, and opinions as they go about their daily lives. These posts collectively contain a wealth of insights into how masses perceive their surroundings. Therefore, extracting people's perceptions from social media posts can provide valuable information about pertinent issues such as public transportation, emergency conditions, and even reactions to political actions or other activities. This paper proposes a novel approach to extract such perceptions from a corpus of social media posts originating from a given broad geographical region. The approach divides the broad region into a number of sub-regions, and trains language models over social media conversations within these sub-regions. Using Bayesian and geo-smoothing methods, the ensemble of language models can be queried with phrases embodying a perception. Discrete and continuous visualization methods represent the extent to which social media posts within the sub-regions express the query. The capabilities of the perception mining approach are illustrated using transportation-themed scenarios.

关键词： Social networking (online)

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Considering architectural properties in real-time play-out 44

Considering architectural properties in real-time play-out

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44. Jahrestagung der Gesellschaft fur Informatik INFORMATIK 2014 - Big Data - Komplexitat meistern - Big Data - Mastering Complexity: 44th Annual Meeting of the Society for computer science, INFORMATICS 2014

作者： Holtmann, Jörg Shipchanov, Dimitar Software Engineering Project Group Mechatronic Systems Design Fraunhofer Institute for Production Technology IPT Zukunftsmeile 1 Paderborn33102 Germany Department of Computer Science University of Paderborn Warburger Str. 100 Paderborn33098 Germany

ISBN: (纸本)9783885796268

Real-time embedded systems (RTES), as in the automotive domain, provide their functionality by executing software operations on hardware with restricted resources and by communicating via buses. The properties of the underlying architecture, i.e., execution times of software operations and bus latencies, cause delays during the provision of the functionality. At the same time, RTES have to fulfill strict real-time requirements. The fulfillment of such real-time requirements under consideration of delays induced by architectural properties should be taken into account already during requirements engineering (RE) to avoid costly iterations in subsequent development phases. In previous work, we developed a formal RE approach based on a recent Live Sequence Chart (LSC) variant, so-called Modal Sequence Diagrams (MSDs). This scenario-based RE approach allows to validate the requirements by means of simulation, i.e., the play-out algorithm originally conceived for LSCs. Our MSD play-out approach considers assumptions on the environment as well as real-time requirements and is applicable to hierarchical component architectures, which makes it well suited for automotive systems. However, delays induced by architectural properties are not considered. In order to consider this important aspect, we introduce in this paper an approach enabling the annotation of software operation execution times and connector latencies to hierarchical component architectures by means of the MARTE profile. These assumptions about the architectural properties can be verified against the realtime requirements specified in the MSDs by means of simulation. We illustrate the approach by means of an example of an automotive RTES.

关键词： Requirements engineering

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Reaching Consensus in Digital Libraries: A Linguistic Approach

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Procedia computer science 2014年 31卷 449-458页

作者： I.J. Pérez F.J. Cabrerizo J.A. Morente-Molinera R. Ureña E. Herrera-Viedma Department of Computer Science and Engineering University of Cádiz Cádiz 11002 Spain Department of Software Engineering and Computer Systems Distance Learning University of Spain (UNED) Madrid 28040 Spain Department of Computer Science and Artificial Intelligence University of Granada Granada 18071 Spain

Libraries are recently changing their classical role of providing stored information into new virtual communities, which involve large number of users sharing real time information. Despite of those good features, there is still a necessity of developing tools to help users to reach decisions with a high level of consensus in those new virtual environments. In this contribution we present a new consensus reaching tool with linguistic preferences designed to minimize the main problems that this kind of organization presents (low and intermittent participation rates, difficulty of establishing trust relations and so on) while incorporating the benefits that a new digital library offers (rich and diverse knowledge due to a large number of users, real-time communication and so on). The tool incorporates some delegation and feedback mechanisms to improve the speed of the process and its convergence towards a consensual solution.

关键词： Group decision making consensus linguistic information digital library

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Secure Feature Driven Development (SFDD) Model for Secure software Development

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Procedia - Social and Behavioral sciences 2014年 129卷 546-553页

作者： Adila Firdaus Imran Ghani Seung Ryul Jeong Department of Software Engineering Faculty of Computer Science and Information Systems Universiti Teknologi Malaysi School of Management Information Systems Graduate School of Business IT Kookmin University Seoul South Korea

This paper introduces an enhanced Feature Driven Development (FDD) model for secure software development. In fact, the enhanced model is based on our previous study and its findings which concluded that existing FDD poses limitations to develop secure software. Thus, an enhanced FDD that supports secure software development is proposed. We have implemented this new FDD model and conducted a case study to compare the level of security in the undergraduate and postgraduate level students. The paper illustrates that agility of FDD is not affected significantly, even after adding new phases.

关键词： Agile Methodology Security software engineering Feature Driven Development

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Quality Assurance for Self-Adaptive, Self-Organising systems (Message from the Workshop Organisers)

Quality Assurance for Self-Adaptive, Self-Organising Systems...

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IEEE International Conference on Self-Adaptive and Self-Organizing systems Workshops, SASOW

作者： Benedikt Eberhardinger Wolfgang Reif Franz Wotawa Tom Holvoet Institute for Software & Systems Engineering University of Augsburg Institute for Software Technology Technische Universität Graz Department of Computer Science Catholic University of Leuven

Welcome to the first edition of the Workshop on Quality Assurance for Self-adaptive, Self-organising systems (QA4SASO 2014). Developing self-adaptive, self-organising systems that fulfil the requirements of different stakeholders is no simple matter. Quality assurance is required at each phase of the entire development process, starting from requirements elicitation, agent design, system architecture design, and finally in the implementation, testing, and deployment of the system. The quality of the artefacts from each development phase affects the rest of the system, since all parts are closely related to each other. Furthermore, the shift of adaptation decisions from design-time to run-time - necessitated by the need of the systems to adapt to changing circumstances - makes it difficult, but even more essential, to assure high quality standards in these kind of systems. Accordingly, the analysis and evaluation of these self-systems has to take into account the specific operational context to achieve high quality standards. As a consequence, we like to address the following challenges in the workshop on quality assurance for self-adaptive, self-organising systems: Evolutionary developing system, interleaving mechanisms, uncertainty according the system environment, open system architecture, and large number of system participants. The necessity to investigate this field has already been recognised and addressed in different communities, but there exists so far no platform to bring all these communities together. Therefore, the workshop provides an open stage for discussions about the different aspects of quality assurance for self-adaptive, self-organising systems.

关键词： Conferences Educational institutions Adaptive systems Quality assurance Communities software engineering Adaptation models

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Developing Faculty Expertise in Information Assurance through Case Studies and Hands-on Experiences

Developing Faculty Expertise in Information Assurance throug...

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Hawaii International Conference on System sciences

作者： Xiaohong Yuan Kenneth Williams Huiming Yu Bei-Tseng Chu Audrey Rorer Li Yang Kathy Winters Joseph Kizza Department of Computer Science North Carolina A&T State University Department of Software and Information Systems University of North Carolina at Charlotte Department of Computer Science and Engineering The University of Tennessee at Chattanooga

ISBN: (纸本)9781479925056

Though many Information Assurance (IA) educators agree that hands-on exercises and case studies improve student learning, hands-on exercises and case studies are not widely adopted due to the time needed to develop them and integrate them into curriculum. Under the support of National science Foundation (NSF) Scholarship for Service program, we implemented two faculty development workshops to disseminate effective hands-on exercises and case studies developed through multiple previous and ongoing grants, and to develop faculty expertise in IA. This paper reports our experience of holding the faculty summer workshops on teaching information assurance through case studies and hands-on experiences. The topics presented at the workshops are briefly described and the evaluation results of the workshops are discussed. The workshops provided a valuable opportunity for IA educators to connect with each other and form collaboration in teaching and research in IA.

关键词： Workshops workshops Case studies Exercise computer information security Hand INFORMATION ASSURANCE Faculty experience NSF

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Increasing awareness of computer science in high school girls

Increasing awareness of computer science in high school girl...

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Frontiers in Education (FIE) Conference

作者： Gerald C. Gannod Janet E. Burge Victoria McIe Maureen Doyle Karen C. Davis Department of Computer Science and Software Engineering Miami University Oxford OH Department of Computer Science Northern Kentucky University Highland Heights KY Electrical Engineering and Computing Systems University of Cincinnati Cincinnati OH

ISBN: (纸本)9781479939237

The "Girls on the Go: The Mobile Computing College Experience" is a residential summer camp whose aim is to encourage female high school students to attend college, to consider computer science as viable major, and to pursue computing related degrees. The camp content is designed primarily around a user-centered design process, with the students gaining experience in the development of a zoo-themed mobile app. In addition to technical experience, students participate in sessions that educate them on campus life, the admissions process, and more importantly, what a computing-related career may hold for them. The camp was offered in two consecutive summers, with approximately 20 participants in each iteration. In this paper, we compare differences between the two iterations with the intent of identifying both lessons learned and avenues for improving the experience. We investigate whether the camp had an effect on attitudes towards computer science as a major, and on the careers available to computer science graduates. To this end, our analysis revealed a statistically significant effect upon raising awareness of the role of computer scientists and the relevancy of computing for solving real world problems.

关键词： computer science Educational institutions engineering profession computers Mobile communication Employee welfare Mathematics

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Partial sensing coverage in 3D wireless lattice sensor networks

Partial sensing coverage in 3D wireless lattice sensor netwo...

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IEEE International Conference on Communications (ICC)

作者： Yun Wang William Chu Zhifeng Xiao Yanping Zhang Department of Computer Science and Information Systems Bradley University Peoria IL USA Department of Computer Science and Software Engineering Penn State Erie Erie PA USA Department of Computer Science Gonzaga University Spokane WA USA

Although most research in lattice wireless sensor networks are focus on determining the optimal deployment pattern to provide full sensing coverage while maximizing the deployment efficiency, we study the partial sensing coverage problem and the corresponding node saving rate in 3D lattice WSNs. Two popular 3D deployment patterns including cube and triangular prism are considered. The partial sensing coverage and the note saving rate with respect to full sensing coverage are derived through mathematically modeling and theoretical analysis. Research results show that partial sensing coverage is of paramount significance to 3D lattice WSN design and implementation as a large amount of expensive 3D sensors can be saved by sacrificing a small amount of sensing coverage. For example, 38.43% and 22.14% sensors can be saved when providing 0.9864 and 0.9898 sensing coverage with respect to full sensing coverage in a cubic pattern and a triangular prism pattern based lattice WSN respectively. computer-based simulations results validate the modeling and analysis.

关键词： Sensors Wireless sensor networks Three-dimensional displays Lattices Numerical models Mathematical model Ad hoc networks

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Partial sensing coverage and deployment efficiency in wireless directional sensor networks

Partial sensing coverage and deployment efficiency in wirele...

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Wireless Telecommunications Symposium, WTS

作者： Yun Wang Zhifeng Xiao Yanwei Wu Anthony G Stephan Jacob M Siegers Department of Computer Science and Information Systems Bradley University Peoria IL USA Department of Computer Science and Software Engineering The Behrend College Erie PA USA Division of Computer Science Western Oregon University Monmouth OR USA

Unlike most existing works that focus on a conventional omni-directional sensor network, we investigate the sensing coverage problem in a directional sensor network through mathematically modeling, analysis, and computer-based simulation evaluation. Research results show: 1) A factor of (2π/θ) more sensors will be required to provide the same sensing coverage in a θ(θ α = ln(1-α)-ln(1-f)/ln(1-f), is solely determined by the sensing coverage requirement in an application and is independent of sensor features. Simulation results validate the modeling, derivation, and analysis.

关键词： Sensors Wireless sensor networks Mathematical model Equations Analytical models Numerical models computer science

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