Significant Properties, Practical 1: Object Analysis (SPs part 3), by Stephen Grace and Gareth Knight


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This presentation, the third of six parts on the practical analysis of significant properties of digital objects, leads participants through an initial practical exercise to determine the properties of particular type of digital object, an email message. The presentation was given as part of module 3 of a 5-module course on digital preservation tools for repository managers, presented by the JISC KeepIt project. For more on this and other presentations in this course look for the tag 'KeepIt course' in the project blog

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Significant Properties, Practical 1: Object Analysis (SPs part 3), by Stephen Grace and Gareth Knight

  1. 1. Practical exercise 1: Object analysis
  2. 2. Exercise overview <ul><ul><li>Analyse the content of an email </li></ul></ul><ul><ul><ul><li>Analyse structure of email message </li></ul></ul></ul><ul><ul><ul><li>Determine purpose that each technical property performs </li></ul></ul></ul><ul><ul><li>Consider how email will be used by stakeholders </li></ul></ul><ul><ul><ul><li>Identify set of expected behaviours </li></ul></ul></ul><ul><ul><ul><li>Classify set of behaviours into functions for recording </li></ul></ul></ul>
  3. 3. Start with this…
  4. 4. Finish with this…
  5. 5. <ul><li>Select object type for analysis </li></ul><ul><li>High-level object type </li></ul><ul><ul><li>Email </li></ul></ul><ul><li>Object sub-types </li></ul><ul><ul><li>Email in thread, standalone email </li></ul></ul><ul><ul><li>Received email that is part of a discussion thread </li></ul></ul><ul><li>Object type in specific environment </li></ul><ul><ul><li>Object created by artist, object created as business record, Object created in specific business, e.g. TNA </li></ul></ul>
  6. 6. <ul><li>Analyse Structure </li></ul><ul><ul><li>Analyse object & obtain a complete list of technical properties </li></ul></ul><ul><li>Information sources </li></ul><ul><ul><li>Expert knowledge, characterisation tools, specifications, standards </li></ul></ul><ul><li>Emails </li></ul><ul><ul><li>Request for Comments (RFC) - memorandum published by Internet Engineering Task Force (IETF) </li></ul></ul>
  7. 7. <ul><li>Identify purpose of technical properties </li></ul><ul><li>Task 1: Split into groups and attempt to classify each one into one more of the following categories (10-15 mins) </li></ul><ul><ul><li>Content: Information content for communication to a stakeholder. </li></ul></ul><ul><ul><li>Context: Information that contributes to understanding of meaning or help to understand provenance, e.g. names, dates. </li></ul></ul><ul><ul><li>Rendering: Information that contributes to re-creation of content, e.g. quality of audio playback, visual recreation </li></ul></ul><ul><ul><li>Structure: Extrinsic/intrinsic relationship between two or more types of content, e.g. email attachments </li></ul></ul><ul><ul><li>Behaviour: Properties that indicate method of content interaction with other stimuli, e.g. hyperlinks, buttons. </li></ul></ul><ul><li>Do properties have clear purpose in the object? Do they serve one or more purposes to the object? </li></ul>
  8. 8. <ul><li>Determine expected behaviours </li></ul><ul><ul><li>What activities would a user – any type of stakeholder – perform when using an email? </li></ul></ul><ul><ul><li>Draw upon list of property descriptions performed in the previous step, formal standards and specifications, or other information sources. </li></ul></ul><ul><li>Task 2: </li></ul><ul><li>Identify the type of actions that a user would be able to perform using the email (Groups. 15 mins). </li></ul><ul><ul><li>E.g. Establish name of person who sent email </li></ul></ul><ul><ul><li>E.g. May want to confirm that email originated from stated source. </li></ul></ul>
  9. 9.
  10. 10. <ul><li>Classify behaviours into functions </li></ul><ul><li>Task 3: Classify behaviours into broad functional groups (10 mins) </li></ul>
  11. 11.
  12. 12. <ul><li>Associate structure with each function </li></ul><ul><li>Structure can now be associated with each function </li></ul>
  13. 13. <ul><li>Review and finalise </li></ul><ul><li>The End result – spaghetti! </li></ul><ul><ul><li>What behaviours did you determine for the object? </li></ul></ul><ul><ul><li>What functions did you classify behaviours into? </li></ul></ul><ul><li>Review process </li></ul><ul><ul><li>Have you missed any properties, behaviours, or functions? </li></ul></ul>