soul / 02-Apr-02
[ Semantics, Ontologies & UBL ]
Slide  14  of  29
Ontology Spectrum
Logical Domain Theory
Animal
Mammal
Reptile
Bird
Dog
Snake
Cat
Cocker Spaniel
Entities: Metal working  machinery, equipment and supplies, metal-cutting machinery, metal-turning equipment, metal-milling equipment, milling insert, turning insert, etc.
Relations: subclass-of; instance-of; part-of; has-geometry; performs, used-on;etc.
Properties: geometry; material; length; operation; UN/SPSC-code; ISO-code; etc.
Values: 1; 2; 3; “2.5 inches”; “85-degree-diamond”; “231716”; “boring”; “drilling”; etc.
Axioms/Rules: If milling-insert(X) & operation(Y) & material(Z)=HG_Steel & performs(X, Y, Z), then has-geometry(X, 85-degree-diamond).
Lee
Management
Technical
Program
Personnel
Staff
Assistant
Director
Director
DARPA
Navy
Intelligence
Etc.
Ali
Ralph
Mary
Brad
A6
A5
A4
Paul
Jim
Technologies
Telecommunications
Agent
Knowledge
Representation
Natural
Language
Program
Project
Task
Semantic
Interoperability
Company
Division
Department
IISys
requires
knows
has_expertise_in
works
has
Machine Interpretable Vocabulary and Types:
Entities, Relations, Properties, Values, Constraints,
Rules, Axioms
Minimal Hierarchic Structure
Syntax/Format & Well-defined NL Definition: Terms
Syntax/Format, Structure, Semantics: Terms + Meaning
Mathematically Rigorous, Rich & Consistent Formal Syntax,
Structure, Semantics: Terms + Machine-Interpretable Meaning
Thesaurus
Conceptual Model
Lady
 Has Narrower Meaning Than
Is Sub-Classification of
 Is Subclass of
 Is Disjoint Subclass of with transitivity property
Schema
Object Model
Communities: AI/KR/NL, DB, Library/Info. Science, OO
AI/KR/NL
DB
Li/IS
OO
UML
DL
ML
FOL
R
ER
EER
Taxonomy/ Classification System
Text Box: weak semantics
weak semantics
Text Box: strong semantics
strong semantics
Terms: Metal working  machinery, equipment and supplies, metal-cutting machinery, metal-turning equipment, metal-milling equipment, milling insert,
turning insert, etc.
Relations: use, used-for, broader-term, narrower-term, related-term
Logical Concepts
Controlled Vocabulary
Problem: Very General
Semantic Expressivity: Very High
Problem: Local
Semantic Expressivity: Low
Problem: General
Semantic Expressivity: Medium
Problem: Local
Semantic Expressivity: High