Studies on Design and Development of Web Data Warehouse

Web数据仓库的设计与开发研究

• 批准号: 13480103
• 负责人: KAMBAYASHI Yahiko
• 金额: $ 10.3万
• 依托单位: KYOTO UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2001
• 资助国家: 日本
• 起止时间: 2001 至 2002
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-13480103/
• 关键词: Web Cache; Information Filtering; Data Warehouse; Caching Algorithm; Contents Management; Geographic Information Systems; Web Search; Mobile Terminal; データベース; 地域情報; WWW; キャッシュ; セマンティクス

Due to the rapid expansion of the World Wide Web, it is necessary to develop efficient way of retrieving and processing web contents. Two well-known methods serving for this purpose are web caching and information filtering. The former enhances reusability of retrieved data, while the latter limits retrieval of data to worthwhile ones. In this research, two methods were modified and then united into a single system, under the name of "Web Warehouse".In improving web cache algorithms, a new model named Virtual Multi-Layered Contents Cache was developed, using classification rules and hierarchical contents management model. The implementation of this model, LRU-SP, was proved to have higher overall efficiency compared to conventional systems in simulation experiment. At the same time, a method using hypertext structure and keyword-based semantics of web contents, named "Intelligent Caching Method using Contents Semantics". This method was implemented as LRU-SP+. The research also contained modification of web cache data as databases, analysis on characteristics of the given data, and dynamic hierarchical structure of web data warehouse, The result was presented in a conference that limits presentations to truly inventive results, (out of 28 presentations in the conference, there was only 1 from Asia,) and has received wide attention for its uniqueness. For improvement on information filtering, locality properties of web contents were used. Unification with Geographic Information Systems (GIS), natural language processing, and hyperlink analysis has enabled restriction of web contents to local ones. This method has improved efficiency in local information search. Although the Web is originally constructed as a global information system, with our system it is also united for a local information search. This method has also gained worldwide attention, and systems with same method are now under development in Korea.

由于万维网的快速扩展，有必要开发有效的方法来检索和处理网络内容。为此目的使用的两种知名方法是Web缓存和信息过滤。前者增强了检索数据的可重复性，而后者则将数据的检索限制为有价值的数据。在这项研究中，以“ Web Warehouse”的名义修改了两种方法，然后将两种方法结合在一起。在改进Web Cache算法中，开发了一种名为虚拟多层内容的新模型，使用分类规则和层次内容开发管理模型。在模拟实验中，与常规系统相比，该模型LRU-SP的实现被证明具有更高的总体效率。同时，一种使用超文本结构和基于关键字的Web内容的语义的方法，称为“使用内容语义的智能缓存方法”。该方法以LRU-SP+实现。这项研究还包含Web缓存数据作为数据库的修改，对给定数据的特征的分析以及Web数据仓库的动态层次结构，结果在会议上限制了演示文稿真正发明结果（在28个演示中，会议只有1个来自亚洲，并且因其独特性而受到广泛关注。为了改善信息过滤，使用了Web内容的局部属性。与地理信息系统（GIS），自然语言处理和超链接分析的统一使Web内容限制了本地内容。此方法在本地信息搜索方面提高了效率。尽管Web最初是作为全球信息系统构建的，但使用我们的系统，它也与本地信息搜索结合在一起。这种方法也引起了全球关注，现在韩国开发了具有相同方法的系统。

项目成果

Y. Kambayashi: "Information Management and Processing"Iwanami Shoten. 183p (2002)

Y. Kambayashi：“信息管理和处理”岩波书店。

Y.Inoue: "Web Locality Based Ranking Utilizing Location Names and Link Structure"Second International Workshop on Web and Wireless Geographical Information Systems (W2GIS 2002).

Y.Inoue：“利用位置名称和链接结构进行基于 Web 位置的排名”第二届 Web 和无线地理信息系统国际研讨会 (W2GIS 2002)。

Y.Kambayashi: "Capacity Bound-free Web Warehouse"First Biennial Conference on Innovative Data Systems Research (CIDR 2003). (2003)

Y.Kambayashi：“Capacity Bound-free Web Warehouse”首届创新数据系统研究双年度会议 (CIDR 2003)。

T.Tezuka: "Extraction of Geographical Neighborhood from Web Resources"World Wide Web -Internet and Web Information Systems (Kluwer Academic Publishers). Vol.5. (2002)

T.Tezuka：“从网络资源中提取地理邻域”万维网 - 互联网和网络信息系统（Kluwer 学术出版社）。

T.Tezuka: "Web-Based Inference Rules for Processing Conceptual Geographical Relationships"Proceedings of the 2^<nd> International Conference on Web Information System Engineering. 375-384 (2001)

T.Tezuka：“处理概念地理关系的基于Web的推理规则”第二届Web信息系统工程国际会议论文集。