| 摘要: |
| 在基于构件的软件开发中，构件查询是影响软件开发效率的关键性问题．为了降低复用者的查询难度。提高构件查询效率，提出将决策树方法引入构件查询过程中，从软件开发项目的构件查询历史信息中获取决策信息。辅助构件查询．在对传统构件查询过程进行分析的基础上，首先对决策树方法与构件库查询过程结合的需求进行了探讨I然后针对如何利用构件查询历史信息建立决策树，如何利用决策树进行构件查询，以及如何对决策树规则集进行存储等关键问题给出了解决方案，提出了一种基于决策树的构件查询方法．还对基于该方法搭建的构件查询系统的基本功能进行了介绍，并给出了该系统的一个应用实例． |
| 关键词: CBSD 软件复用 构件库 决策树：构件查询方法 |
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| 基金项目:Supported by the National Natural Science Foundation of China under Grant Nos．60073015(国家自然科学基金)；the National High-Tech Research and Development Plan of China under Grant No．2001AAll3070(国家高技术研究发展计划(863))；the National Grand Fundamental Research 973 Program of China under Grant No．2002CB31200003(国家重点基础研究发展规划(973)) |
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| A Decision Tree Based Component Retrieving Method |
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LI Ge,ZHANG Lu,XIE Bing,SHAO Wei-Zhong
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| Abstract: |
| Reusing the components from the component repository is a way for software reuse．However,finding appropriate software components is often challenging．In order to help the users to find their components，the decision tree method is introduced to component repository to help inexperienced users’retrieving．Based on this standpoint，the process of retrieving component from component library is analyzed at first；secondly,the solutions about how to build the decision tree，how to retrieve components from the decision tree and how to save the decision rules are discussed；and then the method of decision tree based component retrieving is presented．Further more，a prototype decision tree based component retrieval system is introduced，and a preliminary experiment is presentedtoillustratethemethodinthe end ofthispaper． |
| Key words: CBSD software reuse componentlibrary decision support componentretrieving |
