Extending SiDIF: Difference between revisions

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=== Natural Language Statement ===
=== Natural Language Statement ===
The simplest form of a statement contains:
* subject
* predicate
* object
Example:
<syntaxhighlight lang="text">
<syntaxhighlight lang="text">
dad loves mom
dad loves mom
</syntaxhighlight>
</syntaxhighlight>
This represents the most basic, human-readable form of a statement. It contains:
* subject (dad)
* predicate (loves)
* object (mom)


=== Semantic Web Identifiers ===
=== Semantic Web Identifiers ===
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https://www.wikidata.org/wiki/Q76 https://www.wikidata.org/wiki/Property:P26 https://www.wikidata.org/wiki/Q13133
https://www.wikidata.org/wiki/Q76 https://www.wikidata.org/wiki/Property:P26 https://www.wikidata.org/wiki/Q13133
Now each part has a unique identifier in the semantic web space. The first version shows the raw syntax, while the second version shows the actual linked URIs.


=== Human-Readable with Links ===
=== Human-Readable with Links ===
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[https://www.wikidata.org/wiki/Q76 Barack Obama] [https://www.wikidata.org/wiki/Property:P26 spouse] [https://www.wikidata.org/wiki/Q13133 Michelle Obama]
[https://www.wikidata.org/wiki/Q76 Barack Obama] [https://www.wikidata.org/wiki/Property:P26 spouse] [https://www.wikidata.org/wiki/Q13133 Michelle Obama]
Combines human readability with semantic web identifiers.


== Current SiDIF Reference Mechanism ==
== Current SiDIF Reference Mechanism ==


=== Using 'it' Keyword ===
=== Using 'it' Keyword ===
The 'it' keyword refers to the subject of the previous statement:
<syntaxhighlight lang="text">
<syntaxhighlight lang="text">
dad loves mom
dad loves mom
https://www.wikidata.org/wiki/Q76 is wikidata_url of it
https://www.wikidata.org/wiki/Q76 is wikidata_url of it
</syntaxhighlight>
</syntaxhighlight>
'it' refers to the subject of the previous statement, bridging Object-Oriented concepts (this/self) with semantic web references.


=== Proposed Extension for Statement Parts ===
=== Proposed Extension for Statement Parts ===
References to different parts of statements:
<syntaxhighlight lang="text">
<syntaxhighlight lang="text">
https://www.wikidata.org/wiki/Q76 is wikidata_url of subject
https://www.wikidata.org/wiki/Q76 is wikidata_url of subject
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https://www.wikidata.org/wiki/Q13133 is wikidata_url of object
https://www.wikidata.org/wiki/Q13133 is wikidata_url of object
</syntaxhighlight>
</syntaxhighlight>
Allows referencing any part of the previous statement.


== Core Concepts and Bridging ==
== Core Concepts and Bridging ==


=== Fundamental Elements ===
=== Fundamental Elements ===
<syntaxhighlight lang="text">
* Core elements:
Entity - Object
** Entity - Object
Link - relation between two objects
** Link - relation between two objects
</syntaxhighlight>
 
These map to both OO and Semantic Web paradigms:
* Paradigm mappings:
* OO: Objects and their relationships
** OO: Objects and their relationships
* Semantic Web: Resources and their properties
** Semantic Web: Resources and properties
 
=== Technology Integration ===
Example of technology bindings:


=== Technology Integration Example ===
<syntaxhighlight lang="text">
<syntaxhighlight lang="text">
Person isA Concept
Person isA Concept
# Technology binding options
Person_Sparql is sparql_impl of subject
Person_Sparql is sparql_impl of subject
http://foaf/... is prefix_url of subject
http://foaf/... is prefix_url of subject
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=== Description Logic Basis ===
=== Description Logic Basis ===
OWL/Description Logic components:
* Components:
* Concepts (Classes)
** Concepts (Classes)
* Roles (Properties)
** Roles (Properties)
* Individuals (Instances)
** Individuals (Instances)


=== RDF/OWL Mappings ===
=== RDF/OWL Mappings ===
Class hierarchy and instance relationships:
<syntaxhighlight lang="text">
<syntaxhighlight lang="text">
# Class hierarchy
Concept subClassOf owl:Thing
Concept subClassOf owl:Thing   # Top concept (T with bar)
owl:Nothing
owl:Nothing                     # Bottom concept (inverted T)
Barack rdfType Person
 
# Instance relationship
Barack rdfType Person         # Individual -> Class relationship
</syntaxhighlight>
</syntaxhighlight>


Line 94: Line 93:


=== Reference Keywords Options ===
=== Reference Keywords Options ===
# Full form: subject/predicate/object
* Full form approach:
# Short form: s/p/o
** subject for the entity being described
# Alternative: subject/link/object
** predicate for the relationship
** object for the target entity
* Short form approach:
** s for subject
** p for predicate
** o for object
* Alternative approach:
** subject for entity
** link for relationship
** object for target


=== Key Bridging Concepts ===
=== Key Bridging Concepts ===
* 'it' semantics bridges:
* 'it' semantics bridges:
** OO: self/this/me
** OO: self/this/me concepts
** Semantic Web: subject reference
** Semantic Web: subject references
* Statement part references enable:
* Statement part references support:
** Metadata about relationships
** Metadata about relationships
** Integration with semantic web identifiers
** Integration with semantic web identifiers
Line 108: Line 116:


=== Relationship Considerations ===
=== Relationship Considerations ===
* 1:n relations characteristics:
** Enables flexible technology bindings
** Increases system complexity
** Requires careful management
Example of 1:n relation expression:
<syntaxhighlight lang="text">
<syntaxhighlight lang="text">
# 1:n relations bring:
# Good: Flexibility for different tech bindings
# Challenge: Increased complexity
Person_Sparql is sparql_impl of subject
Person_Sparql is sparql_impl of subject
foaf is prefix of subject
foaf is prefix of subject
</syntaxhighlight>
</syntaxhighlight>
[[Category:SiDIF]]
[[Category:Semantic Web]]
[[Category:Knowledge Representation]]

Revision as of 09:56, 28 January 2025

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SiDIF Extension Proposal

Statement Representations and Evolution

Natural Language Statement

The simplest form of a statement contains:

  • subject
  • predicate
  • object

Example: 

dad loves mom

Semantic Web Identifiers

The same triple structure with Wikidata URLs: 

https://www.wikidata.org/wiki/Q76 https://www.wikidata.org/wiki/Property:P26 https://www.wikidata.org/wiki/Q13133

https://www.wikidata.org/wiki/Q76 https://www.wikidata.org/wiki/Property:P26 https://www.wikidata.org/wiki/Q13133

Human-Readable with Links

[https://www.wikidata.org/wiki/Q76 Barack Obama] [https://www.wikidata.org/wiki/Property:P26 spouse] [https://www.wikidata.org/wiki/Q13133 Michelle Obama]

Barack Obama spouse Michelle Obama

Current SiDIF Reference Mechanism

Using 'it' Keyword

The 'it' keyword refers to the subject of the previous statement: 

dad loves mom
https://www.wikidata.org/wiki/Q76 is wikidata_url of it

Proposed Extension for Statement Parts

References to different parts of statements: 

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

Core Concepts and Bridging

Fundamental Elements

  • Core elements:
    • Entity - Object
    • Link - relation between two objects
  • Paradigm mappings:
    • OO: Objects and their relationships
    • Semantic Web: Resources and properties

Technology Integration

Example of technology bindings: 

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

Semantic Web Foundation

Description Logic Basis

  • Components:
    • Concepts (Classes)
    • Roles (Properties)
    • Individuals (Instances)

RDF/OWL Mappings

Class hierarchy and instance relationships: 

Concept subClassOf owl:Thing
owl:Nothing
Barack rdfType Person

Design Decisions

Reference Keywords Options

  • Full form approach:
    • subject for the entity being described
    • predicate for the relationship
    • object for the target entity
  • Short form approach:
    • s for subject
    • p for predicate
    • o for object
  • Alternative approach:
    • subject for entity
    • link for relationship
    • object for target

Key Bridging Concepts

  • 'it' semantics bridges:
    • OO: self/this/me concepts
    • Semantic Web: subject references
  • Statement part references support:
    • Metadata about relationships
    • Integration with semantic web identifiers
    • Technology-specific bindings

Relationship Considerations

  • 1:n relations characteristics:
    • Enables flexible technology bindings
    • Increases system complexity
    • Requires careful management

Example of 1:n relation expression: 

Person_Sparql is sparql_impl of subject
foaf is prefix of subject
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