Difference between revisions of "Extending SiDIF"
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* Challenge: How to reference different parts of a statement? | * Challenge: How to reference different parts of a statement? | ||
* Options: | * Options: | ||
| + | ** Using it/link/other | ||
** Using subject/predicate/object (full) | ** Using subject/predicate/object (full) | ||
** Using s/p/o (short) | ** Using s/p/o (short) | ||
| − | |||
=== Proposed Solution === | === Proposed Solution === | ||
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=== Description Logic Foundations === | === Description Logic Foundations === | ||
* Basic concepts: | * Basic concepts: | ||
| − | ** | + | ** ⊤ (top concept) |
| − | ** | + | ** ⊥ (bottom concept) |
* Mappings: | * Mappings: | ||
** OWL/Description Logic: Concepts, Roles, Individuals | ** OWL/Description Logic: Concepts, Roles, Individuals | ||
Revision as of 16:48, 28 January 2025
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SiDIF Extension Proposal
Core Problem: Statements About Statements
Evolution of Statement Representation
- Natural language triple:
dad loves mom
- Raw Wikidata URLs:
https://www.wikidata.org/wiki/Q76 https://www.wikidata.org/wiki/Property:P26 https://www.wikidata.org/wiki/Q13133
- Same URLs as active links:
https://www.wikidata.org/wiki/Q76 https://www.wikidata.org/wiki/Property:P26 https://www.wikidata.org/wiki/Q13133
- Human-readable with links:
Barack Obama spouse Michelle Obama
Current Reference Using 'it'
- Basic reference to subject:
dad loves mom
https://www.wikidata.org/wiki/Q76 is wikidata_url of it
Need for Statement Part References
- Challenge: How to reference different parts of a statement?
- Options:
- Using it/link/other
- Using subject/predicate/object (full)
- Using s/p/o (short)
Proposed Solution
- Example using full form:
Barack spouse Michelle
https://www.wikidata.org/wiki/Q76 is wikidata_url of subject
1992-10-03 is date of predicate
https://www.wikidata.org/wiki/Q13133 is wikidata_url of object
Bridging Paradigms
Object-Oriented to Semantic Web Bridge
- 'it' keyword bridges:
- OO concepts (self/this/me)
- Semantic Web references
- Indirection levels:
Person isA Concept
Person_Sparql is sparql_impl of subject
http://foaf/... is prefix_url of subject
foaf is prefix of subject
Barack1950 isA Person
"Barack" is firstname of subject
Real World Example: Obama Family
- Marriage statement with metadata:
Barack spouse Michelle
"1992-10-03" is startTime of predicate
"Trinity United Church of Christ" is place of predicate
- Name history with temporal metadata:
Michelle familyName "Obama"
"married name" is role of predicate
"1992-10-03" is startTime of predicate
Michelle familyName "Robinson"
"maiden name" is role of predicate
"1964-01-17" is startTime of predicate
"1992" is endTime of predicate
Semantic Web Integration
Description Logic Foundations
- Basic concepts:
- ⊤ (top concept)
- ⊥ (bottom concept)
- Mappings:
- OWL/Description Logic: Concepts, Roles, Individuals
- RDF: Classes, Properties, Individuals
Implementation Examples
- Class hierarchy:
Concept subClassOf owl:Thing
owl:Nothing
- Instance relationships:
Barack rdfType Person
Technology Bindings
- Allows 1:n relationships:
- Advantages: Flexibility for different implementations
- Challenges: Increased complexity management
- Example bindings:
Person_Sparql is sparql_impl of subject
foaf is prefix of subject