KIT – University of the State of Baden-Württemberg and National Large-scale Research Center of the Helmholtz Association Institut AIFB – Angewandte Informatik.

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Presentation transcript:

KIT – University of the State of Baden-Württemberg and National Large-scale Research Center of the Helmholtz Association Institut AIFB – Angewandte Informatik und Formale Beschreibungsverfahren Evan Leeson Semantic MediaWiki Tutorial Markus Krötzsch, Oxford Denny Vrandečić, KIT Berlin SMWCon Fall 2011

Institut AIFB Overview Wikis, MediaWiki, and Wikipedia Semantic MediaWiki (SMW) Create instance data with in the wiki self descriptions using existing concepts and newly created concepts affiliation, interests, etc. Collaborative ontology design with SMW Export data Use for testinghttp://scratchpad.referata.com This is introductory – you might want to go to the Developers consultations in the other room

Institut AIFB Long, long time ago… Using Pattern Languages for Object Oriented Programming, OOPSLA87

Institut AIFB Many books, many conferences on design patterns Idea: Collecting design patterns Design Patterns

Institut AIFB Design Patterns Web Page HTML Simple Syntax HTML

Institut AIFB Editing the wiki Create a new page or go to an existing one Click on “edit” Try to add or change text You can cancel anytime, preview (just for you), or save the changes so that everyone can see them

Institut AIFB Quick overview of wiki markup '''three apostrophes''' will make text bold ''two apostrophes''' will make text italic [[Text in double square brackets]] will be links to the page named as the text in the brackets [[Link target|link text]] will display a link that looks like link text but links to link target The wiki is case sensitve – but not on the first letter of a link The wiki is Unicode

Institut AIFB Namespaces Each page in the wiki belongs to a namespace Example namespaces: Talk, Category, Template, Help, File, User, User, etc. Default namespace is empty (like for articles in Wikipedia) Some namespaces have special semantics Semantic MediaWiki introduces further namespaces Property Concept

Institut AIFB Parser functions / Templates They are called in wikitext with {{ }} Template call {{City}} Can also have parameters (by name or by position) {{City|population=200,000}} {{City|200,000}} Function call work the same way (but may have a : or #) {{#expr:20+4}}

Institut AIFB edit wow. I can change the web. let’s write an encyclopedia!

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Institut AIFB So far… Human collaborations can achieve great things But some things are better left to machines…

Institut AIFB Wiki Clock

Institut AIFB edit

Institut AIFB Universal Access to All Knowledge

Institut AIFB What Wikipedia knows Wikipedia has articles about… … all cities … their populations … their mayors So can I ask for a list of the world’s ten largest cities with a female mayor?

Institut AIFB Let’s see what happens…

Institut AIFB WIKIPEDIA’S ANSWER: LISTS

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Institut AIFB COMPUTER ARE STUPID

Institut AIFB What humans see

Institut AIFB What humans see Karlsruhe... has a population of 285, is located in Germany... was founded in has mayor Heinz Fenrich

Institut AIFB What computers see

Institut AIFB What computers see Karlsruhe , Germany Heinz Fenrich

Institut AIFB COMPUTER DON ‘ T MAKE CONNECTIONS

Institut AIFB COMPUTER NEED OUR HELP

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Institut AIFB THE IDEA

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Institut AIFB Wikipedia today Brač is a Croatian island in the Adriatic Sea. The island has a population of 13,000, living in numerous little towns, ranging from the 'main town' Supetar, with more than 2,500 inhabitants, to Novo Selo, where only a dozen people live.CroatianAdriatic SeaSupetarNovo Selo Today, Brač lives mostly on tourism, but fishing and agriculture (especially wine and olives) are very important too, as is selling its precious, white stone (which was used in building Diocletian's Palace in Split, and is built into the White House in Washington, DC, too).tourismfishingagriculturewineolives Diocletian's PalaceSplitWhite House Washington, DC Category: Croatian IslandCroatian Island

Institut AIFB How are they linked? Brač Croatia BračAdriatic Sea BračSupetar BračNovo Selo Bračtourism Bračfishing Bračagriculture

Institut AIFB How are they linked? Brač belongs toCroatia BračAdriatic Sea BračSupetar BračNovo Selo Bračtourism Bračfishing Bračagriculture

Institut AIFB How are they linked? Brač belongs toCroatia Bračlocated inAdriatic Sea BračSupetar BračNovo Selo Bračtourism Bračfishing Bračagriculture

Institut AIFB How are they linked? Brač belongs toCroatia Bračlocated inAdriatic Sea Bračhas townSupetar Bračhas townNovo Selo Bračtourism Bračfishing Bračagriculture

Institut AIFB How are they linked? Brač belongs toCroatia Bračlocated inAdriatic Sea Bračhas townSupetar Bračhas townNovo Selo Bračlivesontourism Bračlives onfishing Bračlives onagriculture

Institut AIFB Brač is a [[Croatia]]n island with an area of 396 km². Brač is a [[belongs to::Croatia]]n island with an area of [[area::396 km²]]. Typed links Extend wiki with typed links So the computer “understands” it BračCroatia belongs to area 396 km²

Institut AIFB Karlsruhe is a city in [[Germany]].[[Country::Germany]]. SubjectPredicateObject Karlsruhe Germany Country Karlsruhe Heinz Fenrich Mayor Heinz Fenrich Male Gender

Institut AIFB Annotating with templates {{City |Mayor=Heinz Fenrich |Population= |Country=Germany }}

Institut AIFB Semantic MediaWiki Extension of MediaWiki Popular Wiki engine Powers Wikipedia Wikis are websites that anyone can edit Easy to use Extends MediaWiki by enabling… Typed links Property – Value Inline queries New ways to explore the content Open source and well documented We will learn how to use Semantic MediaWiki (SMW)

Institut AIFB Slide 47 Overview of semantic markup To add a page P to category C type [[Category:C]] on page P To make a typed link of type R from page P1 to page P2 type [[R::P2]] on page P1 To state the value V of an attribute A on page P type [[A::V]] on page P Example:

Institut AIFB Data values and types Attributes like [[birthdate::February ]] or [[population::3,635,389]] must know the type of the value This is done by adding [[has type::T]] on the page of the attribute Available, predefined types: Page String Number Boolean Date Text Code Temperature Telephone number Record URL Annotation URI Geographic coordinate (S Maps) Enumeration Custom units

Institut AIFB Add your own information Now add information about yourself For example: nationality, affiliation, age, birthday, hair color, likes… Save or preview to see if and how the information has been understood Blue links mean there is a page about it Red link means there is no page about it

Institut AIFB Semantic Forms Example from Semantic Forms [[developer::Yaron Koren]] Forms can make the wiki look like a database application, but remain still much more flexible.

Institut AIFB Collaborative ontology engineering There are pages describing categories and properties Informal description Can be discussed Can be edited Extensional descript. List of all instances But: only direct ones Supercategories

Institut AIFB Slide 52 Social aspects Task: come up with a vocabulary and the relation between the vocabularies for the whole group, using the wiki How to decide which properties and categories are important? How to define the properties or categories? How to ensure high quality data? What does it mean? How to control the wiki knowledge base and its growth? Browse the wiki to see the results and connections

Institut AIFB Querying the knowledge Go to Special:Ask Enter a query Queries look like this: Conditions on a category: [[Category:X]] Conditions on a property: [[R::X]] Property conditions can be ranges, [[R::>X]], [[R::<X]] Property conditions: any value [[R::+]] Print statements: ?R Examples follow See also online docs

Institut AIFB Query examples [[population::>1,000,000]] anything with a population of over a Million [[located in::Korea]] anything that is located in Korea [[affiliation::+]] anything that has any stated affiliation [[Category:Tutor]] all tutors [[Category:Tutor||Student]] all tutors or students (logical or) [[Category:Tutor]] [[Category:Student]] everyone who is both

Institut AIFB Querying and social aspects Querying can only be done on aligned vocabularies If half of the people use “affiliation” and the other half “works for” you cannot query the knowledge easily Inside SMW, information integration usually happens with social tools, not with technology Gardening tools can help with aligning vocabularies, but not replace them Tools that allow you to rename a property throughout the wiki Or to join two different names

Institut AIFB Querying the wiki {{#ask: [[Category:City]] [[Mayor.Gender::Female]] | sort=Population }}

Institut AIFB Querying the wiki {{#ask: [[Category:Country]] [[Continent::North America]] |?Population }}

Institut AIFB Result rendering

Institut AIFB Querying the wiki {{#ask: [[Category:Country]] [[Continent::North America]] |?Population |format=piechart }}

Institut AIFB Pie chart

Institut AIFB Querying the wiki {{#ask: [[Category:Country]] [[Continent::North America]] |?Population |format=barchart }}

Institut AIFB Bar chart

Institut AIFB Templates Results of a query (1) rendered by a template (2) (1) {{#ask: [[Category:Employee]] [[Position::Professor||Professorin]] | ?Picture | ?Telephon | ? | ?Room | sort=Lastname | format=template | template=Personlist }} {{#ask: [[Category:Employee]] [[Position::Professor||Professorin]] | ?Picture | ?Telephon | ? | ?Room | sort=Lastname | format=template | template=Personlist }} (2)

Institut AIFB Timeline {{#ask: [[Category:Conference]] |?Start date |?End date |?Location |sort=Start date |order=desc |format=timeline |timelineposition=today |timelinebands=DAY,MONTH, YEAR |limit=5000 }} {{#ask: [[Category:Conference]] |?Start date |?End date |?Location |sort=Start date |order=desc |format=timeline |timelineposition=today |timelinebands=DAY,MONTH, YEAR |limit=5000 }}

Institut AIFB Calendar format {{#ask: [[Category:Items]] [[Was published on::>{{#calendarstartdate:}}]] [[Was published on::<{{#calendarenddate:}}]] |? Was published on |limit=200 |format=calendar }} {{#ask: [[Category:Items]] [[Was published on::>{{#calendarstartdate:}}]] [[Was published on::<{{#calendarenddate:}}]] |? Was published on |limit=200 |format=calendar }}

Institut AIFB Graph {{#ask: [[Category:Person]] | ?has child | ?knows | format=graph | graphcolor=Yes | graphlink=Yes | graphlegend=Yes | graphlabel=No | graphsize=10,10 | rankdir=TB }} {{#ask: [[Category:Person]] | ?has child | ?knows | format=graph | graphcolor=Yes | graphlink=Yes | graphlegend=Yes | graphlabel=No | graphsize=10,10 | rankdir=TB }}

Institut AIFB Process diagram {{#ask: [[Category:Process Step]] [[Category:{{PAGENAME}}]] | ?has OrSuccessor=hasorsuccessor | ?has Successor=hassuccessor | ?hascontruesuccessor | ?hasconfalsesuccessor | ?has Condition=hascondition | ?has Role=hasrole | ?uses Resource=usesresource | ?has Status=hasstatus | format=process | graphsize=12,12 | graphvalidation=no | showroles=yes | showstatus=yes | showresources=yes }} {{#ask: [[Category:Process Step]] [[Category:{{PAGENAME}}]] | ?has OrSuccessor=hasorsuccessor | ?has Successor=hassuccessor | ?hascontruesuccessor | ?hasconfalsesuccessor | ?has Condition=hascondition | ?has Role=hasrole | ?uses Resource=usesresource | ?has Status=hasstatus | format=process | graphsize=12,12 | graphvalidation=no | showroles=yes | showstatus=yes | showresources=yes }}

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Institut AIFB GOOGLE MAPS

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Institut AIFB External data reuse Computer understands wiki content Knowledge based applications A number of export formats RDF/XML, SPARQL, RDFa, CSV, JSON, iCal, vCard, Bibtex,... RDF APIs in programming languages Java, JavaScript, C/C++, Python, Ruby, Haskell,.Net, PHP, Common Lisp, Prolog, … Standards based URIs, XML, RDF, OWL, SPARQL, …

Institut AIFB QUESTIONS? Thank you for your attention!