OWL2.0

PIAO GUANGYUAN

OWL2.0

Overview of OWL 2.0

PIAO GUANGYUAN

-2010.04.27

OWL2.0

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2. Overview of OWL 2.0

3. Q&A

1. Introduction

Contents

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OWLThe OWL(Web Ontology Language) is designed for use by applications

that need to process the content of information instead of just

presenting information to humans.

OWL OWL 2

Web Ontology Working Group10 February 2004.

Web Ontology Working Group10 October 2009.

Introduction

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Introduction

For User

Document Overview

OWL 2 Primer

OWL 2 New Features& Rationale

OWL 2 Quick Reference Guide

Core Specification

Structural Specification & Functional-Style Syntax

Mapping to RDF Graphs

Direct Semantics

RDF-Based Semantics

Conformance

Specification

Profiles

XML Serialization

Manchester Syntax

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What’s the differences?

Introduction

OWL1 OWL 2.0

keys; property chains; richer datatypes, data ranges; qualified cardinality restrictions; asymmetric, reflexive, and disjoint properties; enhanced annotation capabilities

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1. Introduction

3. Q&A

2. Overview of OWL 2

Contents

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Overview

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Overview Ontologies

Defined in the OWL 2 Structural Specification document.

Any OWL 2 ontology can also be viewed as an RDF graph.

The relationship between these two views is specified by the Map-ping to RDF Graphs document.

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Syntaxes

Overview

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Semantics.

The Direct Semantics and the RDF-Based Semantics provide two

alternative ways of assigning meaning to OWL 2 ontologies:

Overview

assigns meaning directly to ontology structures

assigns meaning directly to RDF graphs and so indirectly to ontology structures via the Mapping to RDF graphs

RDF-Based Semantics

Direct Semantics

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Profiles

Overview

Suitable for applications where very large ontologies are needed.

Suitable for applications where relatively lightweight ontologies are used to organize large numbers of individuals and where it is useful or necessary to access the data di-rectly via relational queries.

Suitable for applications where relatively lightweight ontologies are used to organize large number of individuals and where it is useful or necessary to operate directly on data in the form of RDF triples.

OWL 2 EL

OWL 2 QL

OWL 2 RL

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OWL2.0

Q&A