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An Analysis Method of Business Application Framework

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wuhan university Journal of Natural Sciences 2001年第Z1期6卷 218-223页

作者： He Ke\|qing 1,Fan Hui hua 1,Ying Shi 2 1.Department of Computer Science, wuhan university, wuhan 430072, china 2.state key laboratory of software engineering, wuhan university, wuhan 430072, china Department of Computer Science Wuhan University Wuhan China state key laboratory of software engineering Wuhan University Wuhan China

We discuss the evolution of object oriented software development process based on software pattern. For developing mature software framework and component, we advocate to elicit and incorporate software patterns for ensuing quality and reusability of software frameworks. On the analysis base of requirement specification for business application domain, we present analysis method and basic role model of software framework. We also elicit analysis pattern of framework architecture, and design basic role classes and their structure.

关键词： object oriented software framework analysis pattern of architecture component role model

Role Modeling: A Modeling Method for software Pattern at Knowledge Level

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wuhan university Journal of Natural Sciences 2001年第Z1期6卷 200-203页

作者： Xu Yong\|song 1,He Ke qing 1,Ying Shi 2 1.School of Computer, wuhan university, wuhan 430072, china 2.state key laboratory of software engineering, wuhan university,wuhan 430072, china School of Computer Wuhan University Wuhan China state key laboratory of software engineering Wuhan University Wuhan China

Based on dominant degree of role model among the viewpoints for object oriented modeling process, it dissertates that role modeling is a modeling method for software pattern at knowledge level. After giving some examples for modeling design pattern and analysis pattern at knowledge level using role model, it presents a process for refining design pattern from role model to class model and event trace diagram of UML. In this paper, we advocate the opinion that role modeling before object modeling of UML.

关键词： object oriented role modeling software pattern UML

XIDM: A Common Data Model Based on XML

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wuhan university Journal of Natural Sciences 2001年第Z1期6卷 432-437页

作者： Li Bing 1, Lu Zheng ding 1, Peng De chun 2 1.College of Computer Science & Technology,Huazhong university of Science & Technology,wuhan 430074, china 2.state key laboratory of software engineering, wuhan university,wuhan 430072, china College of Computer Science & Technology Huazhong University of Science & Technology Wuhan China state key laboratory of software engineering Wuhan University Wuhan China

Integration between file systems and multidatabase systems is a necessary approach to support data sharing from distributed and heterogeneous data sources. We first analyses problems about data integration between file systems and multidatabase systems. Then, A common data model named XIDM(XML\|based Integrating Dada Model), which is XML oriented, is presented. XIDM bases on a series of XML standards, especially XML Schema, and can well describe semistructured data. So XIDM is powerfully practicable and multipurpose.

关键词： file systems multidatabase systems data integration XML

Scaling up the DBSCAN Algorithm for Clustering Large Spatial Databases Based on Sampling Technique

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wuhan university Journal of Natural Sciences 2001年第Z1期6卷 467-473页

作者： Guan Ji hong 1, Zhou Shui geng 2, Bian Fu ling 3, He Yan xiang 1 1. School of Computer, wuhan university, wuhan 430072, china 2.state key laboratory of software engineering, wuhan university, wuhan 430072, china 3.College of Remote Sensin School of Computer Wuhan University Wuhan China state key laboratory of software engineering Wuhan University Wuhan China College of Remote Sensing and Information engineering Wuhan University Wuhan China

Clustering, in data mining, is a useful technique for discovering interesting data distributions and patterns in the underlying data, and has many application fields, such as statistical data analysis, pattern recognition, image processing, and etc. We combine sampling technique with DBSCAN algorithm to cluster large spatial databases, and two sampling based DBSCAN (SDBSCAN) algorithms are developed. One algorithm introduces sampling technique inside DBSCAN, and the other uses sampling procedure outside DBSCAN. Experimental results demonstrate that our algorithms are effective and efficient in clustering large scale spatial databases.

关键词： spatial databases data mining clustering sampling DBSCAN algorithm

Restructuring C Programs into C++ Programs

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wuhan university Journal of Natural Sciences 2001年第Z1期6卷 256-262页

作者： Zhang Ying 1,Zhou Yu ming 1,Xu Bao wen 1,2 , Liu Yuan 1 1.Department of Computer Science and engineering, Southeast university, Nanjing 210096, china 2.state key laboratory of software engineering, wuhan university, wuhan 430072, china Department of Computer Science and engineering Southeast University Nanjing China state key laboratory of software engineering Wuhan University Wuhan China

There exist a lot of legacy systems written in C language, which are difficult to understand, modify, maintain and reuse. How to improve the quality of these non object oriented systems has become an important issue in software engineering area. A possible way is to transform these procedural systems into semantically equivalent object oriented systems implemented in C++ language, which provides object oriented features such as data abstraction, inheritance and polymorphism, makes software system more comprehensible, maintainable and reusable. A detailed discussion on polymorphism analysis, object discovery and possible inheritance relation extraction on C to C++ conversion problem is made, which is also suitable to the transformation on legacy systems implemented in other procedural languages to equivalent object oriented systems.

关键词： object extraction cohesion coupling inheritance

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一种基于分形维数的自适应语音信息隐藏算法

武汉大学学报（理学版） 2003年第3期49卷 313-317页

作者：陈力谢玉琼武汉大学数学与统计学院武汉大学非线性中心湖北武汉430072

为了提高秘密数据传输的可靠性和安全性 ,本文以语音段分形维数计算为基础 ,提出一种检测时不需要原始语音信号的自适应语音信息隐藏方法 .语音段的秘密信息嵌入位置和数量由人类听觉感知特性和分形维数确定 ,在保证不可察觉性的前提下 ... 详细信息

为了提高秘密数据传输的可靠性和安全性 ,本文以语音段分形维数计算为基础 ,提出一种检测时不需要原始语音信号的自适应语音信息隐藏方法 .语音段的秘密信息嵌入位置和数量由人类听觉感知特性和分形维数确定 ,在保证不可察觉性的前提下 ,兼顾了鲁棒性和隐藏量的要求 .仿真实验表明该算法具有较好的信息隐藏性能 .

关键词：自适应语音信息隐藏算法分形维数数据传输语音段语音信号处理

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一种面向因特网环境的软件组件分类模式

武汉大学学报（理学版） 2005年第5期51卷 609-614页

作者：沈美娥王铁峰李明新应时北京信息工程学院计算机系北京100101 武汉大学软件工程国家重点实验室湖北武汉430072

针对已有的软件组件分类模式不适应使用要求的问题,面向因特网环境,提出了一种新的软件组件分类模式CSSC.该模式包括体系分类子模式CSSC-S和分面分类子模式CSSC-F,其中CSSC-S为因特网中的组件专用搜索引擎提供信息支持,CSSC-F为检索引... 详细信息

针对已有的软件组件分类模式不适应使用要求的问题,面向因特网环境,提出了一种新的软件组件分类模式CSSC.该模式包括体系分类子模式CSSC-S和分面分类子模式CSSC-F,其中CSSC-S为因特网中的组件专用搜索引擎提供信息支持,CSSC-F为检索引擎提供信息支持.论文结果表明CSSC模式能有效地支持重用者在因特网中查询所需的软件组件.

关键词：组件资源库体系分类法分面分类法搜索引擎检索引擎

A hybrid matching method for geospatial services in a composition-oriented environment

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Science china(Technological Sciences) 2010年第S1期53卷 213-220页

作者： LUO An 1,2,WANG YanDong 1,2 & CHEN ShengHua 2 1 state key laboratory of software engineering,wuhan university,wuhan 430072,china 2.state key laboratory of Information engineering in Surveying,Mapping and Remote Sensing,wuhan university,wuhan 430079,china state key laboratory of software engineering Wuhan University Wuhan China state key laboratory of Information engineering in Surveying Mapping and Remote Sensing Wuhan University Wuhan China

With the development of Internet and GIS,large volumes of spatial data,powerful computing resources and many spatial data processing functions are published in the form of Web *** suitable geospatial services in the composition-oriented environment is a crucial *** semantic Web provides a kind of technology to find and compose various service resources automatically through the *** paper proposes a hybrid method for the semantic matching of geospatial *** method includes two *** 1 puts forward a multi-level semantic matching approach,which matches single geospatial service at four levels:classification,input/output,precondition/effect and the quality of service(QoS).This multi-level matching approach makes single service matching quicker and more *** 2 puts forward a matching algorithm for a geospatial service chain based on the *** algorithm adopts a trace algorithm,taking account of the effect of the *** restricts the input/output parameters of the current service by the input/output parameters of service chain,pre-service and *** matches the atomic service dynamically in a composition-oriented environment,and accurately converts the abstract model of geospatial services into an executable geospatial service chain.A case study of the flood analysis for the Poyang Lake illustrates the effectiveness of our context-based matching method for geospatial services.

关键词： geospatial services semantic context composition service match

An efficient method for detecting concurrency errors in object-oriented programs

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Science china(Information Sciences) 2012年第12期55卷 2774-2784页

作者： HE YanXiang 1,2,WU Wei 2 & CHEN Yong 2 1 School of Computers,wuhan university,wuhan 430072,china 2.state key laboratory of software engineering,wuhan university,wuhan 430072,china School of Computers Wuhan University Wuhan China state key laboratory of software engineering Wuhan University Wuhan China

Multicore and multi-threaded processors have become the norm for modern ***,concurrent programs have become more and more prevalent despite being difficult to write and *** errors are highly likely to appear in concurrent code,conventional error detection methods such as model checking,theorem proving,and code analysis do not scale smoothly to concurrent *** is an indispensable technique for detecting concurrency errors,but it involves a great deal of manual work and is *** paper presents an automatic method for detecting concurrency errors in classes in object-oriented *** method uses a heuristic algorithm to automatically generate test cases that can effectively trigger ***,each test case is executed automatically and a fast method is adopted to identify the actual concurrency error from anomalous run *** have implemented a prototype of the method and applied it to some typical Java *** shows that our method is more effective and faster than previous work.

关键词： concurrency error dynamic test data race atomicity violations test case generation