中文摘要：

当前,科技评价系统主要以申报书的形式接收评审项目的信息,各个系统申报书的异构性导致大量的异构科技评价信息分散在各个系统中,无法进行有效的管理和利用。为了提高科技评价系统的可维护性和可用性,文中以元数据为指导思想,通过对异构申报书进行对比分析,总结出它们的共同特征,定义了科技评价元数据实体来对异构信息进行统一描述;比较各种元数据表示方式的优劣,并结合科技评价系统的实际需求选择关系模型作为元数据表示方式;最终提出一套完整的集中化元数据管理策略并以之建立了科技评价元数据管理系统对元数据描述信息进行统一管理,从根本上解决了科技评价系统中的信息异构问题。

英文摘要：

Nowadays scientific assessment systems mainly use the application sheet to collect information of the projects to be assessed.The heterogeneity of application sheets used in different systems causes heterogeneous data to be spread in these assessment systems,making it extremely difficult for data maintenance and utility.To raise the maintainability and usability of the scientific systems,follow the leads of metadata,analyze heterogeneous application sheets to find their common ground,define scientific assessment metadata entity to represent heterogeneous scientific assessment data uniformly;compare different measures of metadata representation to be aware of their pros and cons,use relational model to represent scientific assessment metadata after considering the actual requirements of the system;provide a central metadata management strategy based on which build a scientific assessment system,to solve the heterogeneous problems in the scientific assessment systems.