Ya-ning Arthur Chen completed his MLS degree in the Department of Information and Library Science, the Tamkang University in 1994. His research interests are focused on library automation, electronic resource and service （including electronic journal, book, and dissertation）, library consortium, metadata , and evaluation metrics of digital library, as well as has also published near to 70 papers for the above topics. Moreover, he is also dedicated to international collaboration in library and metadata community. Currently, he is a project leader of library service at Computing Centre of Academia Sinica, as well as Metadata Architecture and Application Team （MAAT，http://www.sinica.edu.tw/~metadata） for the purpose of metadata researching and supporting to various projects within the National Digital Archive Program in Taiwan.