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DDI4 for Qualitative, Hoyle1
Some Thoughts on DDI4 and Qualitative
DataLarry Hoyle
revised 8/13/2015
DDI4 for Qualitative, Hoyle2
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 8/13/2015
DDI4 for Qualitative, Hoyle3
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 8/13/2015
Text and Derived Audio
4
Original TextHierarchical Document in Multiple Filese.g. novel with alternate endings
Chapter 1
Chapter 2
Chapter 3a Chapter 3b
Derived fileAudio in one file,addressable segments
Chapter 1
Chapter 2
Chapter 3a
Chapter 3b
610239 ms
1210239 ms
1910239 ms
2510239 ms
DDI4 for Qualitative, Hoyle5
DDI4 Relations
• In DDI4 relations between objects are described with a set of objects describing the relationship between a pair of other objects
revised 8/13/2015
Relation
RelationPairn
1
Jim
Jim Jr.
ParentChildPair
parent
child
Chapter1
Chapter 2
HierarchicalPair
precedes
Follows
In UML
Collection
Members1..n0..n
0..n1..n
Collection: Family
Collection: Novel
Jim III ParentChildPair
parent
child
DDI4 for Qualitative, Hoyle6
Relationships among files (order)
revised 8/13/2015
Collection: Linear Document in Multiple Files
RelationPairprecedes
follows
RelationPairprecedes
follows
Chapter 1
Chapter 2
Chapter 3
Hierarchical Document in Multiple Filese.g. novel with alternate endings
RelationPairprecedes
follows
RelationPairprecedes
follows
Chapter 1
Chapter 2
Chapter 3a Chapter 3b
RelationPair
precedes
follows
RelationPair
equivalent 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.
DDI4 for Qualitative, Hoyle7
Relationship among files (derivation/provenance/linking)
revised 8/13/2015
Original TextHierarchical Document in Multiple Filese.g. novel with alternate endings
Chapter 1
Chapter 2
Chapter 3a Chapter 3b
Derived fileAudio in One File,Addressable Segments
Chapter 1
Chapter 2
Chapter 3a
Chapter 3b
610239 ms
1210239 ms
1910239 ms
RelationPair
fromto
DerivationRelation
RelationPair
fromto
RelationPair
from to
RelationPairfromto
{
{
{
{
DDI4 for Qualitative, Hoyle8
Segment descriptions
revised 8/13/2015
Chapter 1
Chapter 2
Chapter 3a
Chapter 3b
610239 ms
1210239 ms
1910239 ms
2510239 ms
Chapter 1Segment 1Start: 204537End: 290543
Segment 2Start: 184123End: 537986
DDI4 for Qualitative, Hoyle9
DDI4 Custom Metadata Classes could allow segment descriptions http://lion.ddialliance.org/package/custommetadata
revised 8/13/2015
CustomStructure: TimedAudio CustomItem: Key=“Start”, numeric, maxOccurs=1, minOccurs=1 CustomItem: Key=“End”, numeric, maxOccurs=1, minOccurs=1
CustomValue: Segment 1CorrespondsTo: TimedAudioStart: 204537End: 290543
CustomValue: Segment 2CorrespondsTo: TimedAudioStart: 184123End: 537986
Defined Once and Reusable
Using the Structure
DDI4 for Qualitative, Hoyle10
For “Well Known” Descriptions these can be built-in Classes
revised 8/13/2015
TimedAudioSegmentStart: 204537End: 290543
TimedAudioSegment Start: 184123End: 537986
DDI4 for Qualitative, Hoyle11
Segment Descriptions – Allen’s Interval Algebra?https://en.wikipedia.org/wiki/Allen%27s_interval_algebra
revised 8/13/2015
The relationship among segments could be qualified by terms from Allen’s interval Algebra
RelationPair Predicate: Overlaps
precedes
follows
CustomValue: Segment 1CorrespondsTo: TimedAudioStart: 204537End: 290543
CustomValue: Segment 2CorrespondsTo: TimedAudioStart: 184123End: 537986
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