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Towards user-centric concrete model transformation

Towards user-centric concrete model transformation

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IEEE Symposium on Visual Languages and Human Centric computing (VL/HCC)

作者： Iman Avazpour Centre for Computing and Engineering Software and Systems Swinburne University of Technology Hawthorn VIC Australia

Model transformations are the key part of Model Driven engineering (MDE). However, their specification is not user-friendly, due to excessive use of metamodels and textual representation of transformation languages. This paper briefly describes the approach and tool under development for user-centric transformation generation using concrete model visualisations.

关键词： Visualization Concrete Rendering (computer graphics) Syntactics Java Computational modeling Educational institutions

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An SQA e-Learning System for Agile software Development

引用

4th International Conference on Networked Digital Technologies, NDT 2012

作者： Bajnaid, Nada Benlamri, Rachid Cogan, Boris Faculty of Computing London Metropolitan University London United Kingdom Department of Software Engineering Lakehead University Thunder Bay Canada College of Computer and Information Technology King Abdulaziz University Jeddah Saudi Arabia

ISBN: (纸本)9783642305665

The agile approaches are setting new paradigms to software development. The old ideas about testing at the end of the coding will no longer be applicable. Agile is about small teams incrementally delivering quality software. However, traditionally, quality assurance (QA) tasks are dealt with externally by a QA team whose role is to ensure that QA process has been followed and required QA standards have been met. So, the main challenge is how to embed quality assurance in agile projects. This paper addresses this shortcoming by proposing a process-driven e-learning system to support QA in agile software development. An ontological approach is adopted to develop a system that senses the developer's current software activity and suggests resources that deal with all SQA related aspects of the software process at hand. A prototype system has been implemented and experimental results are provided. © Springer-Verlag Berlin Heidelberg 2012.

关键词： Quality assurance

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Development of computer literacy courseware for rural children using Sarawak Borneo local dialects

Development of computer literacy courseware for rural childr...

引用

International Conference on Computer & Information Science (ICCIS)

作者： S.H. Subri S.N. Junaini Department of Computing and Software Engineering Universiti Malaysia Sarawak Kota Samarahan Sarawak Malaysia

In the last decade, computers have become important equipment especially for classroom teaching and help students to learn better. This paper reports the design and development of a courseware to introduce computer literacy for Sarawak rural children. We believe this is the first attempt to create a comprehensive courseware totally in Sarawak Malay dialect and Iban Language. The application is designed in Borneo's Sarawak Malay dialect and Bahasa Iban. The courseware contains eight learning modules with focus on the topics about basic computer knowledge. In the evaluation stage, we involved students and asked their comments about the courseware. The testing results revealed that using our courseware, the rural children are excited and satisfied to learn basic computer literacy.

关键词： Standards Courseware Usability Reliability

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Stock market volatility prediction: A service-oriented multi-kernel learning approach

Stock market volatility prediction: A service-oriented multi...

引用

2012 IEEE 9th International Conference on Services computing, SCC 2012

作者： Wang, Feng Liu, Ling Dou, Chenxiao State Key Lab. of Software Engineering Wuhan University Wuhan China College of Computing Georgia Institute of Technology Atlanta GA United States School of Computer Science Wuhan University Wuhan China

ISBN: (纸本)9780769547534

Stock market is an important and active part of nowadays financial markets. Stock time series volatility analysis is regarded as one of the most challenging time series forecasting due to the hard-to-predict volatility observed in worldwide stock markets. In this paper we argue that the stock market state is dynamic and invisible but it will be influenced by some visible stock market information. Existing research on financial time series analysis and stock market volatility prediction can be classified into two categories: in depth study of one market factor on the stock market volatility prediction or prediction by combining historical price fluctuations with either trading volume or news. In this paper we present a service-oriented multi-kernel based learning framework (MKL) for stock volatility analysis. Our MKL service framework promotes a two-tier learning architecture. In the top tier, we develop a suite of data preparation and data transformation techniques to provide a source-specific modeling, which transforms and normalizes a source specific input dataset into the MKL ready data representation. Then we apply data alignment techniques to prepare the datasets from multiple information sources based on the classification model we choose for cross-source correlation analysis. In the next tier, we develop model integration methods to perform three analytic tasks: (i) building one sub-kernel per source, (ii) learning and tuning the weights for sub-kernels through weight adjustment methods and (iii) performing multi-kernel based cross-correlation analysis of market volatility. To validate the effectiveness of our service oriented MKL approach, we performed experiments on HKEx 2001 stock market datasets with three important market information sources: historical prices, trading volumes and stock related news articles. Our experiments show that 1) multi-kernel learning method has a higher degree of accuracy and a lower degree of false prediction, compared to exist

关键词： Forecasting

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Topic Detection over Online Forum

Topic Detection over Online Forum

引用

Web Information Systems and Applications Conference (WISA)

作者： Feng Chen Juan Du Weining Qian Aoying Zhou Institute of Massive Computing Software Engineering Institute Shanghai Key Laboratory of Trustworthy Computing East China Normal University China

Topic detection is an hot research in the area of information retrieval. However, the new environment of Internet, the content of which are usually user-generated, asks for new requirements and brings new challenges. Topic detection has to resolve the problem of its lower quality and large amount of noisy. This paper not only provides a solution for detecting hot topics, but also giving its semantic descriptions as result. Our method integrates two kinds of term features (local features and global features), and use single pass clustering to perform topic detection in a web forum. It's efficient to filter non-topic documents and get readable descriptions of topic in our system. By comparison with baseline and topic model LDA, our method gets better performance and readable result.

关键词： Semantics Feature extraction Clustering algorithms Training Internet Noise measurement Context

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Continuous query for QoS-aware automatic service composition

Continuous query for QoS-aware automatic service composition

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2012 IEEE 19th International Conference on Web Services, ICWS 2012

作者： Jiang, Wei Hu, Songlin Lee, Dongwon Gong, Shuai Liu, Zhiyong Institute of Computing Technology Chinese Academy of Sciences China Graduate University Chinese Academy of Sciences China State Key Laboratory of Software Engineering Wuhan University China Pennsylvania State University United States

ISBN: (纸本)9780769547527

Current QoS-aware automatic service composition queries over a network of Web services are often one-time innature. After a network of Web services is built, such queries are issued once, and answers are found from the scratch. The underlying assumption is that the participating Web services are rather static so that their functional and non-functional parameters seldom change. However, such an assumption is often baseless. New services come and go, service APIs change gradually, and QoS values fluctuate. Therefore, a support for efficiently handling "continuous" service composition queries is desired. In this paper, we propose an event driven continuous query algorithm for QoS-aware automatic service composition problem to cope with different types of dynamic services. Moreover, we integrated this algorithm in our service composition system, QSynth. Finally, we evaluate our proposal using both real QoS data and synthetic Web service data and show the superior performance of ours, compared to the state-of-the art solution which won the performance championship of Web Service Challenge in 2009 and 2010. © 2012 IEEE.

关键词： Web services

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Fast fourier transform based ip traffic classification system for SIPTO at H(e)NB

Fast fourier transform based ip traffic classification syste...

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2012 7th International ICST Conference on Communications and Networking in China, CHINACOM 2012

作者： Han, Lin Huang, Liusheng Hu, Qian Han, Xue Shi, Jinglin School of Software and Engineering University of Science and Technology of China Suzhou China Wireless Communication Technology Research Center Institute of Computing Technology Chinese Academy of Sciences China Beijing Key Laboratory of Mobile Computing and Pervasive Device China Beijing Sylincom Technologies Co. Ltd. China

ISBN: (纸本)9781467326995

3GPP has recently introduced LIPA(Local IP Access) and SIPTO(Selected IP Traffic Offload) to offload traffic from the core network, which brings new challenge to on-line traffic classification, because of the large amount of data and the difference of mobile network from wired network, such as high bit error rates(BER) and temporary disconnections. Therefore, other proposed schemes which aim at ether LIPA at H(e)NB or SIPTO at macro network could not get high accuracy and high speed at the same time, and traffic classification methodologies in wired IP network are not applicable. This paper proposes a fast fourier transform(FFT) based IP traffic classification system for SIPTO at H(e)NB, which focuses on classifying each packet at H(e)NB by extracting the application layer payload pattern using FFT. Pattern extraction and classification using machine learning algorithms are simulated, and results show that our system outperforms existing methods by offering about 3%-6% improvement in classification accuracy with about 7% time. Simulation of SIPTO shows good reduction of press to the core network and low false rates. © 2012 IEEE.

关键词： Fast Fourier transforms

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A Monte-Carlo path planner for dynamic and partially observable environments

A Monte-Carlo path planner for dynamic and partially observa...

引用

IEEE Symposium on Computational Intelligence and Games, CIG

作者： Munir Naveed Diane Kitchin Andrew Crampton Lukáš Chrpa Peter Gregory Department of Software Engineering Fatima Jinnah Women University Pakistan School of Computing and Engineering University of Huddersfield UK

In this paper, we present a Monte-Carlo policy rollout technique (called MOCART-CGA) for path planning in dynamic and partially observable real-time environments such as Real-time Strategy games. The emphasis is put on fast action selection motivating the use of Monte-Carlo techniques in MOCART-CGA. Exploration of the space is guided by using corridors which direct simulations in the neighbourhood of the best found moves. MOCART-CGA limits how many times a particular state-action pair is explored to balance exploration of the neighbourhood of the state and exploitation of promising actions. MOCART-CGA is evaluated using four standard pathfinding benchmark maps, and over 1000 instances. The empirical results show that MOCART-CGA outperforms existing techniques, in terms of search time, in dynamic and partially observable environments. Experiments have also been performed in static (and partially observable) environments where MOCART-CGA still requires less time to search than its competitors, but typically finds lower quality plans.

关键词： Planning Games Real-time systems Monte Carlo methods Path planning Heuristic algorithms Topology

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Work integrated learning rationale and practices in Australian information and communications technology degrees 14

Work integrated learning rationale and practices in Australi...

引用

14th Australasian computing Education Conference, ACE 2012

作者： Pilgrim, Chris J. Koppi, Tony Centre for Computing and Engineering Software Systems Faculty of ICT Swinburne University of Technology PO Box 218 HawthornVIC3122 Australia Faculty of Informatics University of Wollongong Northfields Ave WollongongNSW2522 Australia

ISBN: (纸本)9781921770043

To obtain a better understanding of WIL rationale and practices in Australian ICT degrees, a survey of managers and educational leaders of ICT was undertaken. These survey results were analysed and informed by discussions at a forum of ICT educational leaders. Results indicate that WIL practices are broad with a wide range of internal (university) and external (industry) combinations to provide the student with appropriate professional experience. The majority of respondents indicated that their curricula are industry relevant, and that they offer an industry-linked final year project. Virtual or simulated work experiences also seem to be commonly practiced. The range of options is influenced by local context, staff approaches and resource availability. The majority of universities regard WIL as important and beneficial and apparently have practices that provide for industry contribution to the curriculum even though this may not be obvious to graduates in the workplace. Support provided to students for an industry placement is variable. Success measures of placements are that students have improved understanding of professional responsibility and have gained a variety of work perspectives. That the student is employable as a consequence is not seen as very important. There appears to be a tension between desired outcomes from academia and industry including those of "work readiness" and lifelong learning. It seems that the range of options provided by universities need to be recognised by all stakeholders as contributing to the development of an ICT Professional. © 2012, Australian Computer Society, Inc.

关键词： Students

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Formal specification of hybrid MARTE statecharts

Formal specification of hybrid MARTE statecharts

引用

IEEE 6th International Symposium on Theoretical Aspects of software engineering, TASE 2012

作者： Liu, Ziwei Liu, Jing He, Jifeng Mallet, Frédéric Zhang, Miaomiao Shanghai Key Laboratory of Trustworthy Computing East China Normal University Shanghai China INRIA Sophia Antipolis Méditerranée Sophia Antipolis France School of Software Engineering Tongji University Shanghai China

ISBN: (纸本)9780769547510

The specification of Modeling and Analysis of Real-time and Embedded Systems (MARTE) is an extension of UML in the domain of real-time and embedded Systems. However, unified modeling of continuous and discrete variables in MARTE is still an unsolved problem for hybrid real-time system development. In this paper we propose an extended state chart, Hybrid MARTE state chart, for modeling and analyzing of hybrid real-time and embedded systems. In Hybrid MARTE State charts, we unify the logical time and the chronometric time variables. The improvement of MARTE state chart is based on hybrid automata. Formal syntax and semantics of Hybrid MARTE state charts are given based on labeled transition systems. At the end of this paper, a case study is given to show how to model the behavior of a Train Control System with Hybrid MARTE state charts. © 2012 IEEE.

关键词： Formal specification

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