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User-preferences based service selection model in large-scale services with various QoS properties

Journal of Shanghai University(English Edition) 2011年第5期15卷 420-425页

作者：刘慧许东许德震雷州张龙 School of Computer Engineering and Science Shanghai University High Performance Computing Center Shanghai University Lenovo Mobile Communication Technology Limited

With the rapid growth of service scale, there are many services with the same functional properties but different non-flmctional properties on the Internet. There have been some global optimizing service selection algorithms for service selection. However, most of those approaches cannot fully reflect users＇ preferences or are not fully suitable for large-scale services selection. In this paper, an ant colony optimization （ACO） algorithm for the model of global optimizing service selection with various quality of srevice （QoS） properties is employed, and a user-preference based large-scale service selection algorithm is proposed. This algorithm aims at optimizing user-preferred QoS properties and selecting services that meet all user-defined QoS thresholds. Experiment results prove that this algorithm is very efficient in this regard.

关键词： service selection quilty of service （QoS） ant colony optimization （ACO）

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Discovering small-world in Association Link Networks for Web-based learning

Discovering small-world in Association Link Networks for Web...

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2011 ACM Multimedia Conference, MM'11 and Co-Located Workshops - 3rd ACM International Workshop on Multimedia Technologies for Distance Learning, MTDL'11

作者： Zhang, Shunxiang Luo, Xiangfeng Xuan, Junyu Chen, Xue Xu, Weimin School of Computer Engineering and Science High Performance Computing Center Shanghai University 200072 Shanghai China School of Computer Science and Engineering Anhui University of Science and Technology 232001 Anhui China

ISBN: (纸本)9781450309943

Association Link Network (ALN) is a kind of Semantic Link Network built by mining the association relations among Web resources for effectively supporting Web intelligent application such as Web-based learning, and knowledge acquisition. This paper explores the Small-World properties of ALN to provide theoretical support for Web-based learning. First, a filtering algorithm of ALN is proposed to generate the filtered status of ALN by adjusting the filtering parameter. Secondly, the Small-World properties of ALN at the filtered status are calculated and analyzed by regression analysis to observe the changing trend of Small-World properties. After that, comparison of the Small-World properties between ALN and random graph shows that ALN reveals prominent Small-World characteristic. The discovery of Small-World characteristic of ALN can provide theoretical support for Web-based learning. © 2011 ACM.

关键词： Regression analysis

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Building inventory management model for relief supplies based on OGC and SOA

Building inventory management model for relief supplies base...

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2011 4th International Symposium on Computational Intelligence and Design, ISCID 2011

作者： Liu, Gang Sha, Yongzhong High Performance Computing Lab. School of Information Science and Engineering Lanzhou University Lanzhou China School of Management Lanzhou University Lanzhou China

ISBN: (纸本)9780769545004

Recently, with more and more disasters occurring in the world, people have increasingly realized the importance of the disaster relief. Many systems occur at this time to provide different functionalities. The different branches of disaster relief may solve different problems when using these systems. SAHANA is a disaster management system used for disaster relief. Using such an IT technology may be a good way to solve the problem, but whether it can do efficiently under special circumstance is still a problem. In this paper, we propose a method: using SOA (serviced-oriented Architecture) based on OGC to model inventory management of relief supplies to make the relief work more flexible, efficient and easier. Experimental results show that this model we designed is effective during the relief effort. © 2011 IEEE.

关键词： Web services

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An effective data locality aware task scheduling method for MapReduce framework in heterogeneous environments

An effective data locality aware task scheduling method for ...

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2011 International Conference on Cloud and Service computing, CSC 2011

作者： Zhang, Xiaohong Feng, Yuhong Feng, Shengzhong Fan, Jianping Ming, Zhong School of Computer Science and Technology Henan Polytechnic University Jiaozuo 454000 China College of Computer Science and Software Engineering Shenzhen University Shenzhen 518060 China National High Performance Computing Center at Shenzhen Shenzhen 518055 China

ISBN: (纸本)9781457716362

Data locality has recently been extensively exploited in Cloud computing to improve system performance. However, when schedule Map tasks in Hadoop MapReduce framework working in a heterogeneous environment, existing methods either cannot reduce the occurrence of these Map tasks or injure fairness, thus degrading the system performance. In order to address this problem, this paper proposes a data locality aware scheduling method to improve the Hadoop MapReduce system performance in heterogeneous computing environments. After receiving a request from a requesting node, our method preferentially schedules the task whose input data is stored on the requesting node. If no such tasks exist, our method will select the task whose input data is nearest to the requesting node, and then make a decision on whether to reserve the task for the node storing the input data or schedule the task to the requesting node by transferring the input data to the requesting node on the fly. As a proof of concept, we implement the method in Hadoop-0.20.2. In order to evaluate the performance, we carry out an experimental comparison study on our proposed method against the default scheduling method used in Hadoop-0.20.2. The experiment results show that our proposed method improves the data locality and reduces the normalized execution time as well as the response time of jobs. © 2011 IEEE.

关键词： MapReduce

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Measurement of textual complexity based on categorical invariance in human concept learning

Measurement of textual complexity based on categorical invar...

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10th IEEE International Conference on Cognitive Informatics and Cognitive computing, ICCI*CC 2011

作者： Zhang, Lixiao Luo, Xiangfeng Zhang, Jun Ye, Feiyue Xu, Weimin School of Computer Engineering and Science Shanghai University Shanghai 200072 China High Performance Computing Center Shanghai University Shanghai 200072 China Shanghai Sanda University Shanghai 200072 China

ISBN: (纸本)9781457716966

The measurement of textual complexity is a fundamental issue on e-learning, online question-answering, web search and browsing, etc. But it is still a challenge because the measuring process includes a series of cognitive mechanisms. According to the properties of cognitive principles in human text reading process, the different derivatives of textual keywords are given. Based on the categorical invariance in human conception learning, textual invariance is defined, and then the measuring method of textual complexity is developed which is consistent with the view of categorical invariance in human concept learning. Experiments prove that there is a strong correlation between the text understanding difficulty given by human and the textual complexity measured by our method. That is to say, the proposed method can reflect human's reading experience to some extent. © 2011 IEEE.

关键词： category invariace human concept learning text understanding textual complexity

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Building Hierarchical Keyword Level Association Link Networks for Web Events Semantic Analysis

Building Hierarchical Keyword Level Association Link Network...

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IEEE International Symposium on Dependable, Autonomic and Secure computing (DASC)

作者： Junyu Xuan Xiangfeng Luo Shunxiang Zhang Zheng Xu Huimin Liu Feiyue Ye School of Computer Engineering and Science & High Performance Computing Center Shanghai University Shanghai China

With the increase of information scale of web events on the time, it is extremely difficult and challenging to grasp the semantics of web events artificially, because of the limitation of the time and energy of human beings. Herein, we propose a method to map the web event to keyword level association link network (KALN) for deep analysis of the semantics of web events, such as the evolution semantics of web events. Firstly, the original KALN is constructed at a given time by traditional data mining technologies. Then, the hierarchical KALN, consisted of Theme Layer Network, Backbone Layer Network and Tidbit Layer Network, is built based on the original KALN by information entropy to identify the different semantic levels of the web event, including stable semantics, sub-stable semantics and unstable semantics. With the semantic analysis of hierarchical KALN, human could easily gain a thorough understanding of the web event. Finally, experiments show that our method can effectively capture the different level semantics of web events.

关键词： Semantics Entropy Web pages Association rules Stability analysis Earthquakes Barium

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Model Interactive Search between User and Associated Link Networks

Model Interactive Search between User and Associated Link Ne...

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IEEE International Symposium on Dependable, Autonomic and Secure computing (DASC)

作者： Baiquan Zhu Xiangfeng Luo Yang Liu Xiang He Lingyu Xu School of Computer Engineering and Science & High Performance Computing Center Shanghai University Shanghai China

Web search is a key information retrieval method for human beings in current society, both in the fields of academic and commercial activities. Due to "one-size-fits-all" approach limit to search results obtainment, there are still challenges to give personalized web service with high precision in traditional web search process. Herein, a new framework is proposed to advance traditional search process into a new paradigm, i.e. interactive search. First, a cognitive model of interaction process about one search step is developed by the imitation of human search behaviors. Then based on the theory of interactive computing, an interactive search model is introduced to formalize successive search sessions which include several search steps. Third, based on human's cognitive mechanism such as the spreading activation model and user memory theory, a user model is designed to capture user's search activities which can aid the interactive search process effectively. Last, by the help of Associated Link Network, an information gradient based rank algorithm is proposed aiming at maximizing the quantity of web information supply. The efficiency of our proposed interactive search service is verified by the experimental results.

关键词： Computational modeling Humans Search engines Semantics Knowledge engineering History Algorithm design and analysis

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The computational complexity of arithmetic based on ternary optical computer

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Journal of Information and Computational science 2011年第5期8卷 850-857页

作者： Shen, Yunfu Hu, Pengfei Wang, Hongjian School of Computer Engineering and Science Shanghai University Shanghai 200072 China High Performance Computing Center Shanghai University Shanghai 200072 China

Great progress has been made in the research of Ternary Optical computer (TOC). Based on the existing research, it is of great importance to study the efficiencies and the computational complexities of the new computer. In this paper the MSD arithmetic operations in TOC system are studied and the time computational complexities are analyzed. It is proved that the time complexities of MSD addition, multiplication, matrix multiplication and division are respectively O(1), O(log2n), O(log2mn) and O(nlog2n), where n is the number of the MSD digit, and m is the number of rows in the second matrix of the matrix multiplication. Copyright © 2011 Binary Information Press.

关键词： Computational complexity

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Implementation of an RFID-based biological sample identification and tracking system

Implementation of an RFID-based biological sample identifica...

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2011 2nd IEEE RFID Technologies and Applications Conference, RFID-TA 2011, Collocated with the 2011 IEEE MTT-S International Microwave Workshop Series on Millimeter Wave Integration Technologies, IMWS 2011

作者： Zarabzadeh, Atieh Hayati, Farzad Watson, R. William G. Bradley, Geoff Grimson, Jane Centre for Health Informatics Department of Computer Science Trinity College Dublin Ireland Department of Electronic Electrical and Computer Engineering University of Birmingham United Kingdom UCD School of Medicine and Medical Science UCD Conway Institute of Biomolecular and Biomedical Research University College Dublin Ireland Trinity Centre for High Performance Computing Trinity College Dublin Ireland

ISBN: (纸本)9781457700279

Collection, processing, storage and maintenance of samples to facilitate long-term cohort studies in biobanks, requires a system to manage samples in an effective way to prevent sample mix up and loss. Sample identification and tracking system aims to reserve data on the samples at all the times, hence RFID technology is employed. This technology allows information to be stored on the tags attached to tubes containing samples. A system is proposed, designed and prototype in the Prostate Cancer Research Consortium biobank. © 2011 IEEE.

关键词： Radio frequency identification (RFID)

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Communication mechanism of the monitor system of the ternary optical computer

International Journal of Digital Content Technology and its ...

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International Journal of Digital Content Technology and its Applications 2011年第11期5卷 283-289页

作者： Liping, Yan Kai, Song Software School East China Jiaotong University China School of Information Engineering East China Jiaotong University China School of Computer Engineering and Science Shanghai University China High Performance Computing Center Shanghai University China

In this paper a concurrent, connection-oriented communication server of the monitor system of Ternary Optical computer is designed and realized. The function and accomplishment of each sub module in the communication server are described in general. Some important communication algorithms and structures are defined, and the program structure and implementation of the lower computer communication module is described in detail. Series of experiments of the communication server are designed and completed. The feasibility, rationality and completeness of the communication server are verified by the experimental results.

关键词： Monitoring

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