U.S.-Germany Cooperative Research on the Integration of Textand Database Systems

该奖项将支持计算机领域的合作研究 科学博士W。布鲁斯克罗夫特大学 马萨诸塞州，和埃里希Neuhold教授，综合 出版和信息系统研究所，德国国立 计算机科学研究中心，达姆施塔特，德国。的 该项目的目标是改进文本检索模型。 越来越需要这样的信息系统， 提供对复杂的多媒体数据的访问。 常规 数据库系统提供许多有用的数据管理功能， 但是具有有限的处理非结构化数据的能力， 例如文本。 克罗夫特博士目前的研究重点是文本- 基于相关反馈的信息检索 智能地修改后续查询 并提高整体检索效率。 拟议 合作工作将探讨如何将相关性 反馈和概率检索模型，用于 关系数据库文本信息检索 面向领域的信息检索模型。 的 一种方法是将文档和查询表示为单独的 有向图;文档将是静态的，查询 图将与文档图匹配并重建 动态地，基于来自用户的反馈。的 研究项目将受益于互补的专业知识 两名调查员。 克罗夫特博士会负责取回 模型，并研究该模型对超文本的影响 检索和集成查询语言。 诺伊霍德教授 将集中讨论数据模型的含义， 实际与数据库系统的集成，并设计了 集成系统的用户界面。 的结果 这项研究有望使人们更好地了解 融合的问题，无论是从理论上， 从以下方面获得的实际经验： 建立一个原型。

This award will support collaborative research in computer science between Dr. W. Bruce Croft, University of Massachusetts, and Professor Erich Neuhold, Integrated Publishing and Information Systems Institute, German National Research Center for Computer Science, Darmstadt, Germany. The objective of the project is to improve text retrieval models. There is an increasing need for information systems that can provide access to complex, multimedia data. Conventional database systems provide many useful data management functions, but have a limited capacity for handling unstructured data, such as text. Dr. Croft's current research focuses on text- based information retrieval that uses relevance feedback from the searcher to modify intelligently subsequent queries and improve overall retrieval effectiveness. The proposed cooperative work will explore ways to incorporate relevance feedback and probabilistic retrieval models that are used in text-based information retrieval with relational database models used in field-oriented information retrieval. The approach is to represent documents and queries as separate directed graphs; the document will be static and the query graphs will be matched to the document graphs and reconstructed dynamically, based on feedback from the searcher. The research project will benefit from the complementary expertise of the two investigators. Dr. Croft will work on the retrieval model and study the implications of this model for hypertext retrieval and integrated query languages. Professor Neuhold will concentrate on the implications for data models, the actual integration with a database system, and the design of user interfaces for the integrated system. The results of this research are expected to lead to a better understanding of the issues of integration, both from a theoretical perspective and from practical experience gained through building a prototype.