Characterisation

1. Characterisation Adrian Brown The National Archives, UK

2. Develop tools and services to characterise the significant properties of digital objects, to support: Development of preservation plans Validation of preservation actions (evaluating change) The subproject considers: Representation properties Inherent properties Overview

3. To deliver: Methodologies for describing significant properties Tools and services for automating measurement and comparison of these properties Recommendations for improving the preservation characteristics of digital object types Aims & Objectives

4. Aims & Objectives

5. Achievements (Year 1) Characterisation registry Property description and extraction methodology and tools Characterisation tool framework

6. First iteration registry (bringing PRONOM to its next generation) Persistent Unique Identifier scheme for registry information Support for registry-driven characterisation tool framework Characterisation registry

8. Extensible Characterisation Description Language (XCDL) Extensible Characterisation Extraction Language (XCEL) Describing and extracting characteristics

9. tiff tiff XCDL Extractor Comparer Migrator png XCDL tiff XCEL png XCEL ... XCEL ... XCEL XCDL & XCEL 93% png

10. Command line interface for extractor Preliminary specification for comparator GUI for extractor experiments XCDL/XCEL tools

11. GUI example

12. Characterisation tool framework Registry-driven framework for automated deployment of tools Initial tools implemented: DROID JHOVE Java POI (MS Office documents) JAXP (XML validation)

14. Planned activities (Year 2) Final XC*L specifications Characterisation registry (iteration 2) Representation Information Registries White Paper XCDL extraction tool Characterisation tool wrapper specification Emerging technologies report

15. Thank you!