The Research on Utilization of Heterogeneous Metadata and System Management of Institutional Repositories on Distributed Environment.

近年来，元数据在信息资源共享中的作用越来越重要。但是，由于元数据的分布框架尚未确定，元数据的利用效率不高。与此同时，机构存储库每天都在增加。但是，系统管理的方法论尚未建立。本研究的目的是实验性地构建元数据框架。我们开发了一个元搜索系统，它导入了三种类型的元数据。第一个数据是日本图书馆情报学协会的书目数据。第二个是筑波大学知识社区研究中心的元数据，称为ULIS-CORE。第三种是通过OAI-PMH（元数据收集开放档案倡议协议）收集的几个机构的元数据。将BIBLIS和ULIS-CORE的元素从原始元素映射到OAI-PMH标准元素。我们开发了一个包含三个功能的元数据模式设计系统。第一个功能是提供元数据的对象概要。第二个是支持模式理解。第三是推荐模式。该系统可以同时支持专业人员和非专业人员的技能程度，可以缩小技能差距。我们为机构知识库开发了一个联合搜索系统。机构知识库收集研究论文或学位论文等智力产品。研究人员需要根据自己的专业获取专门的文件或数据。但是他们必须一个仓库一个仓库地搜索，因为这些文件分散在多个机构中。该系统为研究人员提供机构知识库的一站式搜索。本课题明确了异构元数据处理中存在的问题，并给出了部分解决方案。

In recent years, role of metadata is of increasing importance for information resource sharing. However, metadata is not used efficiently because framework of metadata distribution is yet to be acquired. Meanwhile, institutional repositories increase from one day to next. But, methodology of the system management of is not established. The purpose of this research is to build metadata framework experimentally.1. We developed a meta-search system that imported three types of metadata. First data is bibliographic data of Japan Society of Library and Information Science, called BIBLIS. Second one is metadata of Research Center for Knowledge Community, University of Tsukuba, called ULIS-CORE. Third one is metadata of several institutions via OAI-PMH (Open Archive Initiative Protocol for Metadata Harvesting). Elements of BIBLIS and ULIS-CORE are mapped from original element to OAI-PMH standard one.2. We developed a metadata schema design system that consists of three functions. First function is to provide object profile of metadata. Second one is to support schema understanding. Third one is to recommend schema. The system can support both professionals and non-professionals in its degree of skills, and can close the skill gap.3. We developed a federated search system for institutional repositories. The institutional repository collects intellectual products such as research papers or dissertations. Researchers need to access specialized documents or data according to their major. But they have to search repository by repository because the documents are dispersed in more than one institution. The system provides one stop search of institutional repositories to researchers.This research project clarified the issues handling heterogeneous metadata, and gave partial solution.