Knowledge, Structure, and other Stuff

Transcription

1 Knowledge, Structure, and other Stuff The State of Semantic MediaWiki Markus Krötzsch SMW Project Universität Karlsruhe (TH) Ontoprise GmbH Karlsruhe

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3 Copyright Markus Krötzsch Terms of Licensing Creative Commons Share-Alike All redistributions and reuses of this work should include the following: Based on slides by Markus Krötzsch, Image copyrights Wikipedia Logo by Wikimedia Foundation

4 Knowledge should be available to everyone.

5 How can we share knowledge?

6 How can we collect knowledge?

7 How can we exchange knowledge?

8 And what's that knowledge thing anyway?

9 ??????

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11 Knowledge as (hyper)text World-readable World-writable

12 !!!!!!

13 Wikipedia The answer to all questions.

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15 I have a question...

16 What are the world's ten largest cities with a female mayor?

17 Wikipedia may contain all answers but Wikipedia cannot answer all questions

18 Lists can help to answer questions...

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28 Lists cannot answer all questions Lists need much maintenance work Lists tend to get out of date

29 Why can't computers make lists for us?

30 Why can't computers answer questions for us?

31 Because computers are stupid.

32 what humans see

33 Karlsruhe... has a population of 285, is in Baden-Württemberg... was founded in has mayor Heinz Fenrich...

34 what computers see

35 Karlsruhe , Baden-Württemberg Heinz Fenrich...

36 knowledge is more than text

37 knowledge includes how pieces relate to each other

38 knowledge is structured

39 What do we mean with «structure»? Karlsruhe population state mayor Heinz Fenrich Baden-Württemberg founded

40 What do we mean with «structure»? Karlsruhe population state mayor Baden-Württemberg founded country Heinz Fenrich population population born in Unteröwisheim country country Germany Frankfurt sister city sister city Egypt country Cairo location Wikimania latitude country series Alexandria longitude Wikimania Wikimania 2008 location series

41 Structure in Wikipedia Links Categories Geo coords Personendaten Gene data Citations Templates

42 Structure in Wikipedia Links Categories Geo coords Personendaten Gene data Citations Templates

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48 structure makes things possible

49 So what is the problem? many diverse structures mostly hand-crafted hard to share

50 Can't we have a common way of maintaining and sharing structures?

51 Semantic MediaWiki

52 Semantic MediaWiki A MediaWiki extension to store, edit, and exploit structured knowledge

53 SMW fact sheet developed since 2005 > 10 released versions languages (incl. ) مصرى hundreds of sites various add-ons and extensions

54 So what does it do? Editing structured content Searching and querying Exporting and sharing

55 How to add structure to wikis?

56 Most structures are simple: Karlsruhe population state mayor Baden-Württemberg founded country Heinz Fenrich population population born in Unteröwisheim country country Germany Frankfurt sister city sister city Egypt country Cairo location Wikimania latitude country series Alexandria longitude Wikimania Wikimania 2008 location series

57 Most structures are simple: Subject Property state Karlsruhe Object/Value Baden-Württemberg population

58 using templates

59 using input forms

60 wiki syntax

61 wiki syntax [[city::alexandria]]

62 editing sidebar

63 special edit mode

64 special edit mode

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66 demo time

67 What's new since last year? Many simplifications Faster, more reliable Many output/export features More mature architecture

68 Extensions and add-ons Semantic Halo Semantic Semantic Semantic Semantic Semantic Forms Layers Google Maps Calendar Drilldown Tasks

69 What's next? Caching Cooler browsing features Conceptual knowledge Quality control features Consolidate, stabilise

70 What's next?

71 External links Semantic MediaWiki & Extensions Category:Semantic_MediaWiki_extensions Example sites Markus Krötzsch