“Every man has his own cosmology and who can say that his own is right.” said by Einstein. This is also true when we come to understand data semantics that one data may be different interpreted by different data creators, curators and re-users. Then, how do we build a better research data repository? We start with the point made by Willis, C., Greenberg, J., & White, H. (2012) that the metadata of research data increases the access to and reuse of the data. And Stanford, Harvard, and Cornell believe the use of linked data technologies is a promising method to gather contextual information about research resources. To look for inspiration tools that can meet the urgent needs of innovative solutions providing feature-rich services for helping data publishing such as visualization, validation & reuse in different applications by research repositories (Assante, et.al, 2016), the CKAN (Comprehensive Knowledge Archive Network) as a major solution that makes linked metadata available, citable, and validated becomes our first choice. Original file: http://m.odw.tw/u/odw/m/metadata-as-linked-data-for-research-data-repositories/