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| − | == Introduction ==
| + | #REDIRECT [[Context Data Model 1.0]] |
| − | Although it can be used for almost any kind of data, the focus of the [[Higgins Global Graph]] is to provide a foundation for integrating, unifying, and sharing identity-related data. In particular we are focused on information about a person, a group or an entire organization. This might include contact information, authentication data, preferences, email addresses, interests, employer-related information. An object representing a single person, might have relationships to other objects and other people in the same or different data contexts.
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| − | Note that Higgins provides only an abstract, base vocabulary for identity information. Definitions of specific attributes and sets of attributes, as well as classes of objects (e.g. calendar events, movies, books, etc.) are all left to be defined by Higgins [[Context Provider]] developers.
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| − | See the [http://dev.eclipse.org/viewsvn/index.cgi/org.eclipse.higgins/trunk/doc/org.eclipse.higgins.doc/Higgins-Data-Model-Intro.ppt?root=Technology_SVN&view=co Higgins Data Model Intro (PPT)] for a Powerpoint overview.
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| − | See [[Higgins Global Graph Background]] for information about motivations and design goals.
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| − | == Domain Concepts ==
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| − | The [[Higgins Global Graph]] defines these [[Concepts]] (listed alphabetically):
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| − | # [[Attribute]]
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| − | # [[Context]]
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| − | # [[ContextId]]
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| − | # [[Context Relation]]
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| − | # [[Context Correlation]]
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| − | # [[Data Range]] --formerly [[Attribute Value Datatype]]
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| − | # [[Entity]]
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| − | # [[Node]] --formerly [[Digital Subject]]
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| − | # [[NodeId]]
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| − | # [[Node Relation]]
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| − | # [[Node Correlation]]
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| − | == Higgins Ontology Language (HOWL) ==
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| − | Rather than invent a new metamodel from scratch, the [[Higgins Global Graph]] is based on the W3C's Resource Description Framework (RDF) and Web Ontology Language (OWL 1.0). We use RDF and OWL to express an abstract base ontology called [[HOWL]] (higgins.owl) that in turn describes the domain of identity information.
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| − | * See [[HOWL]]
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| − | === Extending HOWL ===
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| − | HOWL is a base ontology. To be useful in real-world applications developers must develop specialized ontologies based on HOWL that describe a specific concrete domain.
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| − | For example, if a developer wanted to describe a CRM database, she would create an OWL ontology that would describe the data objects in the CRM database. This CRM database is called a [[Context]] in Higgins. If, for example, the database contained records about customers and those customers had full-names and email addresses, then the developer would define "Customer" as a sub-class of [[Node]] and "full-name" and "email" as kinds of [[Attribute]]s.
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| − | Here are some HOWL-based Ontologies (''note - these need to be updated''):
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| − | * [[test-person Example Context Ontology]]
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| − | * [[Person-with-address Example Context Ontology]]
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| − | * [[Person-with-friend Example Context Ontology]]
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| − | ==Open Issues==
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| − | * [[Data Model Open Issues]]
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| − | == References ==
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| − | ===RDF/OWL Related Resources===
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| − | * OWL
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| − | ** W3C OWL working group: http://www.w3.org/2007/OWL/wiki/OWL_Working_Group
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| − | ** OWL 1.1 at Google Code: http://code.google.com/p/owl1-1/
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| − | ** OWL 1.1 WD 8: http://www.w3.org/TR/owl11-syntax/
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| − | * Semantic Web (RDF/OWL) Resources
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| − | ** Toolkit: [http://www.wiwiss.fu-berlin.de/suhl/bizer/toolkits/ Developers Guide to Semantic Web Toolkits]
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| − | ** Reference documents: [http://www.w3.org/2001/sw/WebOnt/#Current W3C Web Ontology Working Group]
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| − | ** Tutorial: http://www.cs.man.ac.uk/~horrocks/ISWC2003/Tutorial/
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| − | * Normalization to OWL/RDF
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| − | ** [http://www.ldap.com/1/spec/schema/ont.shtml Schemat]
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| − | ** Sebastian Dietzold, Generating RDF Models from LDAP Directories (PDF), [http://www.semanticscripting.org/SFSW2006/ 2nd Workshop on Scripting for the Semantic Web] co-located with the [http://www.eswc2006.org/ 3rd European Semantic Web Conference], June 12, 2006
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| − | ===Misc Resources===
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| − | * http://wiki.idcommons.net/index.php/Identity_Schemas
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| − | * "D3.2: Models" FIDIS, October, 2005, ([http://www.fidis.net/fileadmin/fidis/deliverables/fidis-wp2-del2.3.models.pdf PDF] 74 pages). Summary: "The objective of this document is to present in a synthetic way different models of representation of a person ("person schema") that can be used in different application domains.
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| − | * [http://www.nmi-edit.org/eduPerson/internet2-mace-dir-eduperson-200604.html eduPerson spex]
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| − | == Links ==
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| − | * [http://eclipse.org/higgins Higgins Home]
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