模糊时态数据库演算的语义

Liguo Deng, Zong Min Ma, Gang Zhang
{"title":"模糊时态数据库演算的语义","authors":"Liguo Deng, Zong Min Ma, Gang Zhang","doi":"10.1109/BMEI.2009.5305790","DOIUrl":null,"url":null,"abstract":"This paper present a fuzzy temporal data model for uncertainty/implicit events more precisely, and introduce fuzzy temporal complex event value relations, which combine the concept of fuzzy temporal relations with the idea of fuzzy temporal values in a uniform framework. We elaborate a model theoretic definition of fuzzy temporal information combination strategies, which has a rigorous foundation on fuzzy temporal theory. And then define an algebra for querying database instances. We prove that our data model and algebra for fuzzy temporal values generalizes the classical relational data model and algebra. Moreover, we show that under certain assumptions, all our algebraic operations are tractable. We finally introduce the syntax/semantic of fuzzy temporal relations and describe the calculus of the fuzzy temporal algebra. Keywords—fuzzy temporal database;algebra; fuzzy temporal data model; fuzzy value; fuzzy degree","PeriodicalId":6389,"journal":{"name":"2009 2nd International Conference on Biomedical Engineering and Informatics","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2009-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Semantics of Fuzzy Temporal Databases Calculus\",\"authors\":\"Liguo Deng, Zong Min Ma, Gang Zhang\",\"doi\":\"10.1109/BMEI.2009.5305790\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"This paper present a fuzzy temporal data model for uncertainty/implicit events more precisely, and introduce fuzzy temporal complex event value relations, which combine the concept of fuzzy temporal relations with the idea of fuzzy temporal values in a uniform framework. We elaborate a model theoretic definition of fuzzy temporal information combination strategies, which has a rigorous foundation on fuzzy temporal theory. And then define an algebra for querying database instances. We prove that our data model and algebra for fuzzy temporal values generalizes the classical relational data model and algebra. Moreover, we show that under certain assumptions, all our algebraic operations are tractable. We finally introduce the syntax/semantic of fuzzy temporal relations and describe the calculus of the fuzzy temporal algebra. Keywords—fuzzy temporal database;algebra; fuzzy temporal data model; fuzzy value; fuzzy degree\",\"PeriodicalId\":6389,\"journal\":{\"name\":\"2009 2nd International Conference on Biomedical Engineering and Informatics\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2009-10-30\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"2009 2nd International Conference on Biomedical Engineering and Informatics\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/BMEI.2009.5305790\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"2009 2nd International Conference on Biomedical Engineering and Informatics","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/BMEI.2009.5305790","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0

摘要

本文提出了一种更精确的不确定/隐式事件的模糊时间数据模型,并引入了模糊时间复事件值关系,将模糊时间关系的概念与模糊时间值的思想统一在一个框架中。给出了模糊时间信息组合策略的模型理论定义,为模糊时间理论提供了严格的理论基础。然后定义查询数据库实例的代数。证明了模糊时间值的数据模型和代数是经典关系数据模型和代数的推广。此外,我们还证明了在一定的假设条件下,所有的代数运算都是可处理的。最后介绍了模糊时间关系的语法/语义,并描述了模糊时间代数的演算。关键词:模糊时态数据库;代数;模糊时态数据模型;模糊值;模糊程度
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Semantics of Fuzzy Temporal Databases Calculus
This paper present a fuzzy temporal data model for uncertainty/implicit events more precisely, and introduce fuzzy temporal complex event value relations, which combine the concept of fuzzy temporal relations with the idea of fuzzy temporal values in a uniform framework. We elaborate a model theoretic definition of fuzzy temporal information combination strategies, which has a rigorous foundation on fuzzy temporal theory. And then define an algebra for querying database instances. We prove that our data model and algebra for fuzzy temporal values generalizes the classical relational data model and algebra. Moreover, we show that under certain assumptions, all our algebraic operations are tractable. We finally introduce the syntax/semantic of fuzzy temporal relations and describe the calculus of the fuzzy temporal algebra. Keywords—fuzzy temporal database;algebra; fuzzy temporal data model; fuzzy value; fuzzy degree
求助全文
通过发布文献求助,成功后即可免费获取论文全文。 去求助
来源期刊
自引率
0.00%
发文量
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信