Engineering Materials Database on Fuzzy Query
-
摘要: 针对目前工程材料数据库无法表达自然语言中模糊概念的现状,提出材料性能和模糊集合的匹配以及模糊语句向SQL语句转换的方法,建立了模糊查询模型.基于此开发了具有模糊查询功能的工程材料数据库,将模糊化查询语句精确化,对查询条件进行定量评判,从而完成材料选定.并在此数据库中,以曲轴选材为实例,验证了所提方法的可行性.Abstract: The fuzzy concept in nature language could not be expressed in current material databases.The method of matching of materials performance parameter and fuzzy sets and transforming nature language into SQL language was presented.Then an engineering material database which had fuzzy queries function was developed to turn fuzzy language into exactitude and judged queries condition in quantitative analysis way.An example of choosing material of crank in the database is given to validate the method.
-
Keywords:
- engineering material /
- fuzzy queries /
- database
-
-
[1] 何新贵.模糊数据库系统[M].北京:清华大学出版社,1994. [2] 朱蓉.基于模糊理论的查询技术研究[J].计算机应用研究,2003,(5):8-9. [3] 周泓,徐小良,汪乐宇.基于模糊算法的数据库查询工具的设计[J].计算机应用研究,2001,(5):16-17. [4] 汪建飞.金属材料模糊查询及选材数据库系统[J].机械,2005,(3):26-27. [5] 李鸿吉.模糊数学基础及实用算法[M].北京:科学出版社,2005. [6] 黄崇福,王家鼎.模糊信息优化处理技术及应用[M].北京:北京航空航天大学出版社,1996. [7] Yoshikane Takahashi.A fuzzy query language for relational database[J].IEEE Transaction on Fuzzy System,1991,21(6):1576-1579. [8] Patrick Bosc,Oliver Pivert.SOLf:A relational database language for fuzzy querying[J].IEEE Transactions on Fuzzy Systems,1995,23(1):1-17.
计量
- 文章访问数: 3
- HTML全文浏览量: 0
- PDF下载量: 0
下载:
