Difference between revisions of "Help:SemanticMW import external vocabulary"

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An example of this functionality is the use of the FOAF vocabulary in the TestWiki. Although the associated terms work like any other annotation in the
 
An example of this functionality is the use of the FOAF vocabulary in the TestWiki. Although the associated terms work like any other annotation in the
−
wiki, the RDF that is exported will directly use the elements of the FOAF specification, thus allowing users to edit FOAF files through the wiki.
+
wiki, the {{abbr|RDF}} that is exported will directly use the elements of the FOAF specification, thus allowing users to edit FOAF files through the wiki.
  
 
Importing an external vocabulary into a SMW property consists on three steps:
 
Importing an external vocabulary into a SMW property consists on three steps:
  
−
==Making vocabularies available for import==
+
===(1) Making vocabularies available for import===
−
* The page is in the Mediawiki namespace with the prefix smw_import_.  
+
The page is in the Mediawiki namespace with the prefix smw_import_.  
−
'''Create''' an entry in MediaWiki namespace having the following format:
+
* '''create''' an entry in MediaWiki namespace having the following format:
  
−
  Mediawiki:Smw_import_'''''vocabulary_name'''''  
+
  Mediawiki:Smw_import_'''''local-defined-namespace'''''  
  
−
where '''''service_name''''' is a given name for the service. The first part of the new created service name is mandatory prefixed by   
+
where '''''local-defined-namespace''''' is the case sensitive “short cut”, that tells {{abbr|SMW}} about vocabularies being imported. The first part of the new created service name is mandatory prefixed by   
 
''Mediawiki:Smw_import_''
 
''Mediawiki:Smw_import_''
 
For example, the page for the foaf vocabulary is named MediaWiki:smw_import_foaf.  
 
For example, the page for the foaf vocabulary is named MediaWiki:smw_import_foaf.  
  
 
* '''edit''' the new page and insert vocabulary elements having the following format:
 
* '''edit''' the new page and insert vocabulary elements having the following format:
−
 
+
<pre style="border:0px none;margin:0px;">
 +
              RDF source                  e.g. documentation page
 +
              ↓                            ↓
 +
</pre><!--
 +
--><syntaxhighlight lang="text" line start="1">
 
  http://xmlns.com/foaf/0.1/|[http://www.foaf-project.org/ Friend Of A Friend]
 
  http://xmlns.com/foaf/0.1/|[http://www.foaf-project.org/ Friend Of A Friend]
 
  name|Type:String
 
  name|Type:String
Line 27: Line 31:
 
  Person|Category
 
  Person|Category
 
  knows|Type:Page
 
  knows|Type:Page
−
  .......
+
  …
 +
</syntaxhighlight>
  
 
* '''save''' the page.
 
* '''save''' the page.
  
−
==Create property or modify an existing one==
+
===(2) Create a property or modify an existing one===
  
−
'''Create''' a SMW Property. When the Property already exists, edit it and add the vocabulary element to the property as follows:
+
'''Create''' a property page and tell {{abbr|SMW}} about the imported vocabulary element. When it already exists, modify it and add the imported vocabulary element to the property as follows:
 +
This is a property of type <nowiki>[[has type::</nowiki>'''''[http://biowikifarm.net/test/Special:Types Element type]'''''<nowiki>|Element type]]</nowiki>
 +
and is imported from <nowiki>[[imported from::</nowiki>'''''local-defined-namespace''''':original-vocabulary-term]]
  
−
  This is a property of type <nowiki>[[has type::</nowiki>'''''Element type'''''<nowiki>|Element type]]</nowiki>
+
For example in the page '''Property:FoafName''':
 +
  This is a property of type <nowiki>[[has type::String|strings]]</nowiki>
 +
and is imported from <nowiki>[[imported from::foaf:name]]</nowiki>.
  
−
and is imported from
+
Now the [[Special:ExportRDF|RDF Export]] of this property includes a rdf:about-line and the “foaf:name” of the import definition (<nowiki>[[importedfrom::foaf:name]]</nowiki>) becomes:
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<nowiki>[[imported from::foaf:vocabulary_element]] </nowiki>
+
<syntaxhighlight lang="xml" >
 +
<!DOCTYPE rdf:RDF>
 +
…
 +
  <owl:ObjectProperty rdf:about="http://xmlns.com/foaf/0.1/name">
 +
…
 +
</syntaxhighlight>
  
 +
<!-- what is ‘The names’? -->
 
The names of the selected pages, without namespace prefix, are either shown automatically in query results, or optionally by specifying mainlabel.
 
The names of the selected pages, without namespace prefix, are either shown automatically in query results, or optionally by specifying mainlabel.
−
Names are <nowiki>[[has type::String|strings]]</nowiki>.
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Names are <nowiki>[[has type::String|String]]</nowiki>.
−
 
+
  
 
Applications of Property '''FoafName''' include:
 
Applications of Property '''FoafName''' include:
  
 
*the name deviates from the pagename without namespace prefix, e.g.
 
*the name deviates from the pagename without namespace prefix, e.g.
−
 
 
**it is the full name while the pagename is a short form
 
**it is the full name while the pagename is a short form
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**it includes the namespace prefix (we can also use the separate <nowiki>[[Attribute:Ns]]</nowiki>)
 
**it includes the namespace prefix (we can also use the separate <nowiki>[[Attribute:Ns]]</nowiki>)
−
 
 
**it starts with a lowercase letter
 
**it starts with a lowercase letter
−
 
 
*selection with an inequality
 
*selection with an inequality
−
 
  
 
Formally, ''FoafName'' is represented by the [http://xmlns.com/foaf/0.1/ FOAF] property <nowiki>[[imported from::foaf:name]]</nowiki>.
 
Formally, ''FoafName'' is represented by the [http://xmlns.com/foaf/0.1/ FOAF] property <nowiki>[[imported from::foaf:name]]</nowiki>.
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*'''Save''' the Property page.
 
*'''Save''' the Property page.
  
−
==Property usage==
+
===(3) Property usage===
  
 
The property could be used as any other property. Use the new created property in a wiki page as:  
 
The property could be used as any other property. Use the new created property in a wiki page as:  
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It can easily happen that some existing article of the wiki should be modified to represent (another) imported concept. For example, a wiki community that already uses a category "Person" might decide to map this category to "foaf:Person" in the future. Import statements in existing articles can be changed at any point in time without requiring additional updates in the wiki. The exported RDF will immediately be modified accordingly.
 
It can easily happen that some existing article of the wiki should be modified to represent (another) imported concept. For example, a wiki community that already uses a category "Person" might decide to map this category to "foaf:Person" in the future. Import statements in existing articles can be changed at any point in time without requiring additional updates in the wiki. The exported RDF will immediately be modified accordingly.
  
 +
==Use cases==
 +
===Import Dublin Core terms===
 +
An example of vocabulary import is:
 +
 +
<nowiki>http://purl.org/dc/terms/|[http://purl.org/dc/terms/ dcterms]</nowiki>
 +
Policy|Category
 +
isVersionOf|Type:Page
 +
tableOfContents|Type:Page
 +
FileFormat|Category
 +
publisher|Type:Page
 +
PeriodOfTime|Category
 +
relation|Type:Page
 +
MediaTypeOrExtent|Category
 +
rightsHolder|Type:Page
 +
coverage|Type:Page
 +
type|Type:Page
 +
URI|Type:Page
 +
MethodOfAccrual|Category
 +
LCSH|Type:Page
 +
mediator|Type:Page
 +
extent|Type:Page
 +
Point|Type:Page
 +
hasFormat|Type:Page
 +
LocationPeriodOrJurisdiction|Category
 +
LinguisticSystem|Category
 +
creator|Type:Page
 +
DDC|Type:Page
 +
available|Type:Text
 +
identifier|Type:Text
 +
accrualMethod|Type:Page
 +
rights|Type:Page
 +
PhysicalMedium|Category
 +
spatial|Type:Page
 +
accessRights|Type:Page
 +
Jurisdiction|Category
 +
description|Type:Page
 +
ProvenanceStatement|Category
 +
RFC3066|Type:Page
 +
TGN|Type:Page
 +
modified|Type:Text
 +
conformsTo|Type:Page
 +
license|Type:Page
 +
dateCopyrighted|Type:Text
 +
RightsStatement|Category
 +
subject|Type:Page
 +
date|Type:Text
 +
Standard|Category
 +
isReferencedBy|Type:Page
 +
Box|Type:Page
 +
temporal|Type:Page
 +
requires|Type:Page
 +
dateAccepted|Type:Text
 +
hasPart|Type:Page
 +
UDC|Type:Page
 +
references|Type:Page
 +
Frequency|Category
 +
BibliographicResource|Category
 +
dateSubmitted|Type:Text
 +
Agent|Category
 +
isFormatOf|Type:Page
 +
RFC1766|Type:Page
 +
contributor|Type:Page
 +
RFC4646|Type:Page
 +
replaces|Type:Page
 +
accrualPolicy|Type:Page
 +
audience|Type:Page
 +
MESH|Type:Page
 +
hasVersion|Type:Page
 +
isRequiredBy|Type:Page
 +
medium|Type:Page
 +
LCC|Type:Page
 +
accrualPeriodicity|Type:Page
 +
MediaType|Category
 +
DCMIType|Type:Page
 +
AgentClass|Category
 +
bibliographicCitation|Type:Text
 +
isReplacedBy|Type:Page
 +
format|Type:Page
 +
LicenseDocument|Category
 +
alternative|Type:Page
 +
valid|Type:Text
 +
provenance|Type:Page
 +
language|Type:Page
 +
SizeOrDuration|Category
 +
educationLevel|Type:Page
 +
created|Type:Text
 +
ISO639-2|Type:Page
 +
ISO639-3|Type:Page
 +
ISO3166|Type:Page
 +
isPartOf|Type:Page
 +
IMT|Type:Page
 +
title|Type:Page
 +
issued|Type:Text
 +
PhysicalResource|Category
 +
MethodOfInstruction|Category
 +
instructionalMethod|Type:Page
 +
Period|Type:Page
 +
W3CDTF|Type:Page
 +
source|Type:Page
 +
abstract|Type:Page
 +
Location|Category
 +
NLM|Type:Page
 +
 +
See also: [http://biowikifarm.net/test/MediaWiki:SMW_import_dcterms Import dcterms]
  
 
[[Category:Help]]
 
[[Category:Help]]
 +
[[Category:Semantic Mediawiki]]
 +
[[Category:Import]]

Latest revision as of 13:23, 26 January 2015

Help sections
Contents · Semantic MediaWiki · Semantic Forms
Add Ontology · Semantic links and import/export features · Import external vocabulary
Other SemanticMW extensions · Other extensions



In Semantic MediaWiki it is possible to import and reuse controlled vocabulary that belongs to existing Semantic Web documents or standards by associating the vocabulary's elements with wiki terms.

Import vocabulary

An example of this functionality is the use of the FOAF vocabulary in the TestWiki. Although the associated terms work like any other annotation in the wiki, the RDF that is exported will directly use the elements of the FOAF specification, thus allowing users to edit FOAF files through the wiki.

Importing an external vocabulary into a SMW property consists on three steps:

(1) Making vocabularies available for import

The page is in the Mediawiki namespace with the prefix smw_import_.

  • create an entry in MediaWiki namespace having the following format:
Mediawiki:Smw_import_local-defined-namespace

where local-defined-namespace is the case sensitive “short cut”, that tells SMW about vocabularies being imported. The first part of the new created service name is mandatory prefixed by Mediawiki:Smw_import_ For example, the page for the foaf vocabulary is named MediaWiki:smw_import_foaf.

  • edit the new page and insert vocabulary elements having the following format:
              RDF source                  e.g. documentation page
              ↓                            ↓

1  http://xmlns.com/foaf/0.1/|[http://www.foaf-project.org/ Friend Of A Friend]
2  name|Type:String
3  homepage|Type:URI
4  Person|Category
5  knows|Type:Page
6  …
  • save the page.

(2) Create a property or modify an existing one

Create a property page and tell SMW about the imported vocabulary element. When it already exists, modify it and add the imported vocabulary element to the property as follows: 

This is a property of type [[has type::Element type|Element type]]
and is imported from [[imported from::local-defined-namespace:original-vocabulary-term]]

For example in the page Property:FoafName: 

This is a property of type [[has type::String|strings]]
and is imported from [[imported from::foaf:name]].

Now the RDF Export of this property includes a rdf:about-line and the “foaf:name” of the import definition ([[importedfrom::foaf:name]]) becomes: 

<!DOCTYPE rdf:RDF>
…
  <owl:ObjectProperty rdf:about="http://xmlns.com/foaf/0.1/name">
…

The names of the selected pages, without namespace prefix, are either shown automatically in query results, or optionally by specifying mainlabel. Names are [[has type::String|String]].

Applications of Property FoafName include:

  • the name deviates from the pagename without namespace prefix, e.g.
    • it is the full name while the pagename is a short form
    • it includes the namespace prefix (we can also use the separate [[Attribute:Ns]])
    • it starts with a lowercase letter
  • selection with an inequality

Formally, FoafName is represented by the FOAF property [[imported from::foaf:name]].

  • Save the Property page.

(3) Property usage

The property could be used as any other property. Use the new created property in a wiki page as: 

[[FoafName::somename]]

When this page will be exported as RDF, the property will appare like: 

......
<foaf:name rdf:datatype="http://www.w3.org/2001/XMLSchema#string">somename</foaf:name>
......

Changing import statements

It can easily happen that some existing article of the wiki should be modified to represent (another) imported concept. For example, a wiki community that already uses a category "Person" might decide to map this category to "foaf:Person" in the future. Import statements in existing articles can be changed at any point in time without requiring additional updates in the wiki. The exported RDF will immediately be modified accordingly.

Use cases

Import Dublin Core terms

An example of vocabulary import is: 

http://purl.org/dc/terms/|[http://purl.org/dc/terms/ dcterms]
Policy|Category
isVersionOf|Type:Page
tableOfContents|Type:Page
FileFormat|Category
publisher|Type:Page
PeriodOfTime|Category
relation|Type:Page
MediaTypeOrExtent|Category
rightsHolder|Type:Page
coverage|Type:Page
type|Type:Page
URI|Type:Page
MethodOfAccrual|Category
LCSH|Type:Page
mediator|Type:Page
extent|Type:Page
Point|Type:Page
hasFormat|Type:Page
LocationPeriodOrJurisdiction|Category
LinguisticSystem|Category
creator|Type:Page
DDC|Type:Page
available|Type:Text
identifier|Type:Text
accrualMethod|Type:Page
rights|Type:Page
PhysicalMedium|Category
spatial|Type:Page
accessRights|Type:Page
Jurisdiction|Category
description|Type:Page
ProvenanceStatement|Category
RFC3066|Type:Page
TGN|Type:Page
modified|Type:Text
conformsTo|Type:Page
license|Type:Page
dateCopyrighted|Type:Text
RightsStatement|Category
subject|Type:Page
date|Type:Text
Standard|Category
isReferencedBy|Type:Page
Box|Type:Page
temporal|Type:Page
requires|Type:Page
dateAccepted|Type:Text
hasPart|Type:Page
UDC|Type:Page
references|Type:Page
Frequency|Category
BibliographicResource|Category
dateSubmitted|Type:Text
Agent|Category
isFormatOf|Type:Page
RFC1766|Type:Page
contributor|Type:Page
RFC4646|Type:Page
replaces|Type:Page
accrualPolicy|Type:Page
audience|Type:Page
MESH|Type:Page
hasVersion|Type:Page
isRequiredBy|Type:Page
medium|Type:Page
LCC|Type:Page
accrualPeriodicity|Type:Page
MediaType|Category
DCMIType|Type:Page
AgentClass|Category
bibliographicCitation|Type:Text
isReplacedBy|Type:Page
format|Type:Page
LicenseDocument|Category
alternative|Type:Page
valid|Type:Text
provenance|Type:Page
language|Type:Page
SizeOrDuration|Category
educationLevel|Type:Page
created|Type:Text
ISO639-2|Type:Page
ISO639-3|Type:Page
ISO3166|Type:Page
isPartOf|Type:Page
IMT|Type:Page
title|Type:Page
issued|Type:Text
PhysicalResource|Category
MethodOfInstruction|Category
instructionalMethod|Type:Page
Period|Type:Page
W3CDTF|Type:Page
source|Type:Page
abstract|Type:Page
Location|Category
NLM|Type:Page

See also: Import dcterms

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