Some Thoughts on DDI4 and Qualitative Data Larry Hoyle revised 8/13/2015DDI4 for Qualitative, Hoyle 1.

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Presentation transcript:

Some Thoughts on DDI4 and Qualitative Data Larry Hoyle revised 8/13/2015DDI4 for Qualitative, Hoyle 1

Existing elements DDI4 has many elements which can be used for qualitative data. This is a description of the possible use of the newer of those elements for a use case. revised 8/13/2015DDI4 for Qualitative, Hoyle 2

Use Case Novel with alternate endings Original is digital text stored in one file per chapter Chapter 3 has two versions (alternate endings) Derived version is audio stored as one stream with alternate chapter 3 in sequence revised 8/13/2015DDI4 for Qualitative, Hoyle 3

Text and Derived Audio revised 8/13/2015DDI4 for Qualitative, Hoyle 4 Original Text Hierarchical Document in Multiple Files e.g. novel with alternate endings Chapter 1 Chapter 2 Chapter 3a Chapter 3b Derived file Audio in one file, addressable segments Chapter 1 Chapter 2 Chapter 3a Chapter 3b ms ms ms ms

DDI4 Relations In DDI4 relations between objects are described with a set of objects describing the relationship between a pair of other objects revised 8/13/2015DDI4 for Qualitative, Hoyle 5 Relation RelationPair n 1 Jim Jim Jr. ParentChildPair parent child Chapter1 Chapter 2 HierarchicalPair precedes Follows In UML Collection Members 1..n 0..n 1..n Collection: Family Collection: Novel Jim III ParentChildPair parent child

Relationships among files (order) revised 8/13/2015DDI4 for Qualitative, Hoyle 6 Collection: Linear Document in Multiple Files RelationPair precedes follows RelationPair precedes follows Chapter 1 Chapter 2 Chapter 3 Hierarchical Document in Multiple Files e.g. novel with alternate endings RelationPair precedes follows RelationPair precedes follows Chapter 1 Chapter 2 Chapter 3a Chapter 3b RelationPair precedes follows RelationPair equivalent Order relations might be used to describe relationships among files for qualitative objects. Two alternative cases are shown here. One a simple linear ordering, the second a more hierarchical relationship among files.

Relationship among files (derivation/provenance/linking) revised 8/13/2015DDI4 for Qualitative, Hoyle 7 Original Text Hierarchical Document in Multiple Files e.g. novel with alternate endings Chapter 1 Chapter 2 Chapter 3a Chapter 3b Derived file Audio in One File, Addressable Segments Chapter 1 Chapter 2 Chapter 3a Chapter 3b ms ms ms RelationPair from to DerivationRelation RelationPair from to RelationPair from to RelationPair from to { { { {

Segment descriptions revised 8/13/2015DDI4 for Qualitative, Hoyle 8 Chapter 1 Chapter 2 Chapter 3a Chapter 3b ms ms ms ms Chapter 1 Segment 1 Start: End: Segment 2 Start: End:

DDI4 Custom Metadata Classes could allow segment descriptions revised 8/13/2015DDI4 for Qualitative, Hoyle 9 CustomStructure: TimedAudio CustomItem: Key=“Start”, numeric, maxOccurs=1, minOccurs=1 CustomItem: Key=“End”, numeric, maxOccurs=1, minOccurs=1 CustomValue: Segment 1 CorrespondsTo: TimedAudio Start: End: CustomValue: Segment 2 CorrespondsTo: TimedAudio Start: End: Defined Once and Reusable Using the Structure

For “Well Known” Descriptions these can be built-in Classes revised 8/13/2015DDI4 for Qualitative, Hoyle 10 TimedAudioSegment Start: End: TimedAudioSegment Start: End:

Segment Descriptions – Allen’s Interval Algebra? revised 8/13/2015DDI4 for Qualitative, Hoyle 11 The relationship among segments could be qualified by terms from Allen’s interval Algebra RelationPair Predicate: Overlaps precedes follows CustomValue: Segment 1 CorrespondsTo: TimedAudio Start: End: CustomValue: Segment 2 CorrespondsTo: TimedAudio Start: End: