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Study of Self-Organization Model of Multiple Mobile Robot

International Journal of Advanced Robotic Systems 2005年第3期2卷

作者： Ceng Xian-yi Li Shu-qin Xia De-shen Department of Computer Science NanJing University of Science & Technology P.R. China 210094State Key Laboratory for Novel Software Technology Nanjing University Nanjing 210093 P.R.ChinaComputer Science & Communication Engineering Institute of Jiangsu University. P.R. China 212013 Department of Computer Science NanJing University of Science & Technology P.R. China 210094

A good organization model of multiple mobile robot should be able to improve the efficiency of the system, reduce the complication of robot interactions, and detract the difficulty of computation. From the sociology aspect of topology, structure and organization, this paper studies the multiple mobile robot organization formation and running mechanism in the dynamic, complicated and unknown environment. It presents and describes in detail a Hierarchical-Web Recursive Organization Model (HWROM) and forming algorithm. It defines the robot society leader; robotic team leader and individual robot as the same structure by the united framework and describes the organization model by the recursive structure. The model uses task-oriented and top-down method to dynamically build and maintain structures and organization. It uses market-based techniques to assign task, form teams and allocate resources in dynamic environment. The model holds several characteristics of self-organization, dynamic, conciseness, commonness and robustness.

关键词： self-organization mobile robot agent

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Using RoleOf relationship in design pattern instantiation

Using RoleOf relationship in design pattern instantiation

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International Conference on Information technology: Coding and Computing (ITCC)

作者： Chengwan He Keqing He F. He Feng Yao Jin Liu State key laboratory of Software Engineering Wuhan University of China China MDA Technology Department Fujitsu Laboratories Limited Shin-yokohama Japan Department of Computer Science and Technology Wuhan Institute of Chemical Technology China

The scattering of pattern logic (the attributes and methods of pattern role) is the most typical problem on design pattern instantiation, that is, pattern logic scatters across multiple business classes, which causes problems, such as, debasing the reusability of pattern logic, losing the instantiation information of pattern (traceability and overlapping problem) etc. To resolve these problems in design level, an approach to design pattern instantiation based on RoleOf relationship is proposed. It treats role as the independent modeling element and introduces RoleOf relationship between business class and role, which makes the business logic and the pattern logic completely separated, thus improves its reusability. Through the extension of UML, the meta-model and semantics of RoleOf relationship, and stereotypes and tagged values used for identify pattern information are provided, it resolves the traceability and overlapping problem. Finally, the implementation method of RoleOf relationship is discussed through an example.

关键词： Scattering Documentation Chemical technology Logic design Unified modeling language Concrete Application software Pattern analysis Laboratories software engineering

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Research on the analysis and measurement for testing results of Web applications

Research on the analysis and measurement for testing results...

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International Conference on Cyberworlds

作者： Lei Xu Baowen Xu Yanxiang He Hanwu Chen Qiaoming Zhu Department of Computer Science & Engineering South-East University Nanjing China Jiangsu Institute of Software Quality Nanjing China State Key Laboratory of Software Engineering Wuhan University of China Wuhan China School of Computers National University of Defense Technology Changsha China School of Computer Science & Technology Soochow University Soochow China

Reasonable analysis and corrective measurement for the testing results of Web applications can effectively judge the effect and efficiency of the testing. Therefore, based on the previous work, we propose a new method for testing results analysis and comparison, which uses the semantic label and XML description technique to realize the information separation between data and display in the Web pages, so as to directly compare the testing results and the expected results. Furthermore, combined with the realities, we determine the metric indexes of Web application testing, so as to provide the criterions and guidelines for the evaluations of the Web applications and their testing processes. And we introduce the feedback control mechanism into the development and evolvement of Web applications, so as to further improve the system quality

关键词： Application software computer science Laboratories software engineering software testing Information analysis XML Web pages Helium software quality

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A metamodel based model transformation approach

A metamodel based model transformation approach

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International Conference on software Engineering Research, Management and Applications (SERA)

作者： Yucong Duan S.C. Cheung Xiaolan Fu Yuqing Gu Institute of Software Chinese Academy and Sciences China Department of Computer Science Hong Kong University of Science and Technology Hong Kong China State Key Laboratory of Brain and Cognitive Science Institute of Psychology Chinese Academy and Sciences China

The information transformation problem of model driven software development (MDSD) processes is gaining increasing attentions. In this paper, we present an indepth analysis of the major causes leading to the ambiguities of existing transformation. A metamodel based approach is then proposed to address these causes. A mechanism to generate transformation rules is devised based on a classification of the UML metamodel elements to be used in subsequent transformation processes. Some other critical issues relating to the generated transformation system are also discussed.

关键词： Unified modeling language Programming computer science Laboratories Cognitive science Psychology Brain modeling software systems Automatic control Automation

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Approximate information retrieval for heterogeneity ontologies

Approximate information retrieval for heterogeneity ontologi...

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International Conference on Cyberworlds

作者： Dazhou Kang Baowen Xu Jianjiang Lu keyue Li W.C. Chu Hanwu Chen Department of Computer Science and Engineering South-East University Nanjing China Jiangsu Institute of Software Quality Nanjing China State Key Laboratory of Software Wuhan University of China Wuhan China People''s Liberation Army University of Science and Technology Nanjing China Department of Computer Science and Information Engineering TungHai University Taiwan

Ontology-based information retrieval is precise and effective but suffers from the problem of ontology heterogeneity. This paper focuses on the approximate information retrieval approach to solve the heterogeneity problem of both common ontologies as well as fuzzy ontologies on the semantic Web. Approximate information retrieval needs to find approximations of concepts. However, current methods cannot find the best approximations of concepts for common ontologies, and there is still no published work for fuzzy ontologies. This paper firstly proposes a method of approximate information retrieval between common ontologies. It defines multielement least upper bounds and multielement greatest lower bounds, and then simplifies the multielement bounds to remove redundancy. It provides effective algorithms to find the simplified multielement bounds, and get the best approximations of concepts from the bounds. Then for the fuzzy ontologies, the paper defines cut concepts to transform fuzzy concepts into common concepts, and then applies the proposed method for approximate information retrieval between fuzzy ontologies. The improved algorithms for fuzzy ontologies are given to make the method more feasible and effective

关键词： Information retrieval Ontologies computer science Upper bound Information systems software quality Laboratories Educational technology Electronic mail computer science education

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Reasoning technique for extended fuzzy description logics

Reasoning technique for extended fuzzy description logics

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International Conference on Tools for Artificial Intelligence (ICTAI)

作者： Yanhui Li Baowen Xu Jianjiang Lu Dazhou Kang Jie Xu Department of Computer Science and Engineering South-East University Nanjing China State Key Laboratory of Software Wuhan University of China Wuhan China Jiangsu Institute of Software Quality Nanjing China People''s Liberation Army University of Science and Technology Nanjing China

A family of extended fuzzy description logics, which includes a framework of syntax, semantics, knowledge base form and reasoning tasks, is proposed to enable representation and reasoning for complex fuzzy information. This paper discusses the reasoning technique for reasoning tasks of extended fuzzy description logics, which adopts classical description logics to discretely simulate extended fuzzy description logic in polynomial time and reuses the existing reasoning result to prove the complexity of reasoning tasks of extended fuzzy description logics

关键词： Fuzzy logic Fuzzy reasoning software quality computer science Laboratories Programmable logic arrays Electronic mail Polynomials Knowledge representation Fuzzy sets

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A hierarchical grid architecture based on computation/application metadata

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2nd International Workshop on Grid and Cooperative Computing, GCC 2003

作者： Dou, Wan-Chun Sun, Juan Yang, Da-Gang Cai, Shi-Jie State Key Laboratory for Novel Software Technology Department of Computer Science and Technology Nanjing University 210093 China

ISBN: (纸本)3540219889

Grid technology is the collection of tools and services that integration widely distributed, heterogeneous, and multi-organizational resource. For better understanding grid’s structure, an object-oriented framework of C/A component is explored. Then, a hierarchical grid architecture combining data Grid, information Grid, and knowledge Grid is explored based on a general hierarchical grid architecture. The conclusions are presented at last. © Springer-Verlag Berlin Heidelberg 2004.

关键词： Grid computing

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Duration-constrained regular expressions

Duration-constrained regular expressions

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作者： Xuandong, Li Jianhua, Zhao Tao, Zheng Yong, Li Guoliang, Zheng State Key Laboratory of Novel Software Technology Nanjing University Nanjing China Department of Computer Science and Technology Nanjing University Nanjing China Department of Computer Science and Technology Nanjing University Nanjing Jiangsu 210093 China

This paper investigates the logic-automata-connection for Duration Calculus. It has been frequently observed that Duration Calculus with linear duration terms comes close to being a logic of linear hybrid automata. We attempt to make this relation precise by constructing Kleene-connection between duration-constrained regular expressions and a subclass of linear hybrid automata called loop-reset automata in which any variable tested in a loop is reset in the same loop. The formalism of duration-constrained regular expressions is an extension of regular expressions with duration constraints, which are essentially formulas of Duration Calculus without negation, yet extended by a Kleene-star operator. In this paper, we show that this formalism is equivalent in expressive power to loop-reset automata by providing a translation procedure from expressions to automata and vice verse. BCS © 2004.

关键词： Constraint theory

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Data and interaction oriented workflow execution

Data and interaction oriented workflow execution

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2nd International Workshop on Grid and Cooperative Computing, GCC 2003

作者： Dou, Wan-Chun Sun, Juan Yang, Da-Gang Cai, Shi-Jie State Key Laboratory for Novel Software Technology Dept. of Computer Science and Technology Nanjing University Nanjing210093 China

ISBN: (纸本)3540219935

For better supervising workflow performance, the data elements engaged in workflow execution are classified into application data and process data. Taking advantage of HyperSet and Nested HyperSet, the rationale of domain-specified control and interaction is discussed and a fashion directing the hierarchical interaction is explored based on the domain-specified disciplines. The conclusions are presented at last. © Springer-Verlag Berlin Heidelberg 2004.

关键词： Artificial intelligence

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An online composite graphics recognition approach based on matching of spatial relation graphs

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International Journal on Document Analysis and Recognition 2004年第1期7卷 44-55页

作者： Xu, Xiaogang Sun, Zhengxing Peng, Binbin Jin, Xiangyu Liu, Wenyin State Key Lab for Novel Software Technology Nanjing University Nanjing 210093 China Department of Computer Science and Technology Nanjing University Nanjing 210093 China Department of Computer Science City University of Hong Kong Hong Kong Hong Kong

A spatial relation graph (SRG) and its partial matching method are proposed for online composite graphics representation and recognition. The SRG-based approach emphasizes three characteristics of online graphics recognition: partial, structural, and independent of stroke order and stroke number. A constrained partial permutation strategy is also proposed to reduce the computational cost of matching two SRGs, which is originally an NP-complete problem as is graph isomorphism. Experimental results show that our proposed SRG-based approach is both efficient and effective for online composite graphics recognition in our sketch-based graphics input system - SmartSketchpad. © Springer-Verlag Berlin/Heidelberg 2004.

关键词： Graph matching Online graphics recognition Sketch-based user interface Spatial relation graph

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