概率XML数据模型的综述  

Survey on probability XML data model

作　　者：殷丽凤[1] 金花[1] 田宏[1] 

机构地区：[1]大连交通大学软件学院,辽宁大连116028

出　　处：《电子设计工程》2011年第23期88-91,共4页Electronic Design Engineering

基　　金：辽宁省教育厅计划项目(2008093)

摘　　要：随着XML成为网络信息表示和交换的标准以及不确定数据的广泛存在,概率XML数据库管理技术成为了当今研究的热点,研究者根据概率数据的类型和解决实际问题的需要提出了多种概率XML数据模型。首先介绍了概率XML数据管理技术的概念,特点和挑战;其次综述了概率XML数据和概率XML数据模型,各种模型的核心思想都来自于可能世界模型,通过选择孩子节点以及删除节点可得到一个可能世界的实例,而且所有实例的概率之和为1;最后介绍了不同模型之间的转换关系。为概率XML数据库的查询、规范化理论奠定了基础。The management technology of probabilistic XML database become today＇s research focus with XML being the standards of information representation and data exchange on the internet and uncertain data existing in various fields. A variety of probabilistic XML data models are proposed basing on the type of probabilistic data and the need of solving practical problem. First, the concepts, characteristics and challenges in probabilistic XML data management are introduced. Second, the advance of the research on probabilistic XML data, probabilistic XML data model are proposed, the core idea of these models comes from the possible world model, a possible world instance can be got by selecting the child node and deleting nodes and the sum of the probabilities for all the instances is 1. Finally, translation among models are given. The theory laid the foundation for the probabilistic XML database queries, normalization theory.

关 键 词：概率XML数据 概率XML数据模型 可能世界 模型转换 

分 类 号：TP311.13[自动化与计算机技术—计算机软件与理论]