ABSTRACT
Architecture and Standard Services ...................................................34 2.2.3 Semantic-Based Metadata Sharing and Data Discovery ....................34
2.3 Technological Issues and Solutions ................................................................ 35 2.3.1 Interoperability ................................................................................... 35 2.3.2 Provenance and Updating ................................................................... 37 2.3.3 System Performance ........................................................................... 38 2.3.4 Timely Updating ................................................................................. 38
2.4 Design and Implementation of CLH ............................................................... 39 2.4.1 Architecture ........................................................................................ 39 2.4.2 Administration, User, and Group Management ..................................40 2.4.3 Harvesting ........................................................................................... 41 2.4.4 Metadata Standards and Transformation ............................................ 42 2.4.5 User Interface and Programming APIs .............................................. 43
2.4.5.1 Search through Web Graphics User Interface ..................... 43 2.4.5.2 Remote Search ..................................................................... 43
2.5 Usage and Operational Status ......................................................................... 45 2.5.1 System Operations .............................................................................. 45 2.5.2 System Metadata Status ...................................................................... 45 2.5.3 Usage...................................................................................................46
