一种支持自由扩展的跨领域元数据动态构建方法

A free expansion-supporting dynamic cross-domain metadata construction method

基于"核心+扩展"的跨领域元数据模型,提出了一种迭代生成跨领域核心元数据的元数据动态构建方法,并利用随机性假设和稀疏性假设,对动态构建方法中筛选函数进行设计。实验证明,本文所设计方法的有效性及收敛性均能达到预期效果,可有效支持用户对跨领域数据资源的动态定义和操作访问。

A dynamic cross-domain metadata construction method that can iteratively generate cross-domain core metadata was proposed according to the ＂ core ＋expansion＂ cross-domain metadata model. The functions screened from the dynamic cross-domain metadata construction method were designed according to the random hypothesis and sparse hypothesis,which showed that its efficiency and convergence are as good as we expected,and can effectively support users to dynamically define and operationally access the cross-domain data resources.