1. Re-rendering of Deposit History Bin Han Digital Repository Developer bin.han@concordia.ca Concordia University Libraries Tomasz Neugebauer Digital Projects & Systems Development Librarian tomasz.neugebauer@concordia.ca Concordia University Libraries

2. Spectrum Research Repository http://spectrum.library.concordia.ca/ http://spectrum.library.concordia.ca/ 2

3. Spectrum Research Repository http://spectrum.library.concordia.ca/ http://spectrum.library.concordia.ca/ 3

4. Tracking Metadata Not only metadata, but also CHANGES. 4

5. History 5

6. Problem? 6

7. Embargo History 7

8. Render? 8

9. Compile Revision File 9

10. Solution 10 SyntaxSemanticsVisual

11. XML::SemanticDiff XML Tree Semantic Diff %Hash = ( XPath=>value ) 11

12. Map Metadata Field XPath EPrints APIs Metadata Field 12

13. Display 13

14. Solution 14

15. Future 15

16. Thanks! 16