基于细粒度聚合单元元数据的书目资源聚合研究  

Research on Bibliographic Resource Aggregation Based on Fine-Grained Aggregation Unit Metadata

作　　者：卫宇辉 Wei Yuhui

机构地区：[1]中国版本图书馆

出　　处：《国家图书馆学刊》2020年第6期90-101,共12页Journal of The National Library of China

摘　　要：随着书目资源中多源异构数据的增多,信息片段呈现出扩散分布的特征,这增加了用户获取目标资源的难度、降低了信息检索效率,而聚合细粒度信息资源、构建信息单元之间的关联关系对于知识服务效率的提升具有重要作用。本文通过对聚合单元进行细粒度划分,根据语篇单元、句群单元、节段单元的属性特征及DC、LOM元数据,构建了细粒度聚合单元元数据框架;从聚合单元知识组织体系出发,结合细粒度聚合环境下聚合单元之间的关联关系,构建了基于聚合单元元数据框架的细粒度信息语义组织模型,并基于该模型提出书目关系扩展及映射方案;通过分析聚合单元元数据框架下的书目数据聚合层次及其他书目框架实体之间的关联,实现了书目元数据细粒度与揭示内容的细化、扩展,为细粒度书目资源聚合及检索提供了理论基础。图7。表4。参考文献23。With the increase of multi-source heterogeneous data in bibliographic resources,information fragments show the characteristics of diffusion distribution,which increases the difficulty for users to obtain target resources and reduces the efficiency of information retrieval.Aggregation of fine-grained information resources and construction of association relationships between information units play an important role in improving knowledge service efficiency.Based on the fine-grained division of aggregation units and the attribute characteristics of discourse units,sentence group units and segment units,as well as DC and LOM metadata,this paper constructs a fine-grained aggregation unit metadata framework.Starting from the knowledge organization system of aggregation units and combining the association relationships among aggregation units in fine-grained aggregation environment,a fine-grained information semantic organization model based on metadata framework of aggregation units is constructed,and a bibliographic relationship expansion and mapping scheme is proposed based on the model.By analyzing the aggregation level of bibliographic data under the aggregation unit metadata framework and the relationships among other bibliographic framework entities,the refinement and expansion of fine-grained bibliographic metadata and revealed content are realized,which provides a theoretical basis for aggregation and retrieval of fine-grained bibliographic resources.7 figs.4 tabs.23 refs.

关 键 词：书目资源 细粒度 聚合单元 元数据 

分 类 号：TP311.13[自动化与计算机技术—计算机软件与理论]