Folien vom LOD2 CKAN Workshop Vienna am 15.6. 2011 in Wien - Metadaten Management und Semantic Search in Open Data Katalogsystemen mittels PoolParty (http://www.poolparty.biz) von Thomas Schandl (Semantic Web Company - SWC). (License: CC-BY 3.0)

1. PoolParty für
semantische Suche und
Vokabular Management für CKAN
Mag. Thomas Schandl
Semantic Web Company

2. Agenda
• Live Demo PoolParty Semantic Search
• Szenarios für semantische Suche
• Die Rolle von Thesauri bei semantischer Suche
• PoolParty Demo am Beispiel OpenData und
CKAN
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3. OGD/CKAN Herausforderungen
• Wo suchen?
Verteilte nationale und internationale
Datenbestände
• Welche Suchbegriffe verwenden?
Uneinheitliche Metadaten und Verschlagwortung,
verschiedene Sprachen und Begrifflichkeiten
• Verschiedene andere Katalogsysteme
© Semantic Web Company – http://www.semantic-web.at/ 3

4. Some thoughts on the Semantic Web
“In the Semantic Web, it
is not the Semantic
which is new, it is the
Web which is new”
Dr. Chris Welty, IBM
Watson Research Center
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5. Some thoughts on the Semantic Web
“A little Semantics
Goes a Long Way”
Prof. Jim Hendler
Rensselaer Polytechnic Institute
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6. PoolParty Überblick
• Hauptanwendungsgebiete:
– SKOS Thesaurus Management
– Linked Data (publishing & consuming)
– Semantic Search & Semantic Indexing
• Verbindung CKAN und PoolParty in LOD 2 Projekt
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7. Semantic Search Demo
http://bit.ly/semantic_search
http://www.flickr.com/photos/techburst/2796421248/
Semantic search has many faces
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8. Weitere Semantic Search Szenarios
http://www.flickr.com/photos/techburst/2796421248/
Semantic search has many faces
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9. Situations in which semantic search
can help
I want to see facts
from different
sources describing I can´t
this entity. remember how
I want to know to spell the
more about this search term
entity in a
certain context. I want to search
in different
languages
I want to gain simultaneously
background
knowledge to a
certain document
I can´t
remember
I want the exactly what I
software to I forgot some of was looking for
understand what I the names for
mean by „Jaguar“ the entity I´m
looking for
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10. Find information faster – Auto-
Complete
I can´t
remember how
to spell the
search term
To provide powerful auto-complete also for enterprise search
scenarios you need to establish an enterprise vocabulary.
10

11. Reveal hidden information – Status
quo
I forgot some of
the names for
the entity I´m
SNCR Search looking for
SNCR OR „Selective non- Search
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12. Reveal hidden information with
query expansion
SNCR OR "selective non catalytic reduction" Search
SNCR
preferred Label
alternative Label
selective non
catalytic reduction
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13. Multi-lingual search based on a
thesaurus
I want to search
in different
languages
simultaneously
clean energy OR energía limpia Search
preferred Label @en
clean energy
energía limpia
preferredLabel @es
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14. Reveal hidden information and
relations
I want to gain
background
knowledge to a
certain document
http://poolparty.punkt.at/demozone
Find documents
or images related
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to any other text.

15. Find more specific information with
faceted search
Zero-result queries
won´t happen
anymore
facets support
structured queries
facets help
to drill down
search results,
adapt dynamically
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16. Complex queries with faceted
search over linked data
„Show me all airlines
whose
parent company is
Lufthansa“
http://dbpedia.neofonie.de/
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17. Find linked information – Status quo
I want to see facts
from different
sources describing
this entity.
My Energy-Dossier about
The user has to put
together manually
energy-related
information about
a country.
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18. 360O views: Find linked information
Energy-related
information about countries
are „mashed“ automatically
by using „linked data“
http://www.reegle.info/countries
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19. 19
The role of thesauri in semantic search
http://www.flickr.com/photos/techburst/2796421248/

20. SKOS – Open Standard for Thesauri
• SKOS = Simple Knowledge
Organisation System(s)
• Goal …
– Simple, flexible, extensible, machine-
understandable representation for…
• Thesauri
• Classification Schemes
• Taxonomies
• Subject Headings
• Other types of ‘controlled vocabulary’…
© Semantic Web Company – http://www.semantic-web.at/ 20

21. The role of thesauri in semantic
search
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22. The role of thesauri in semantic
search (contd.)
Thesaurus as the central point
to control:
• labels & query expansion
• facets
• refine search mechanisms
• metadata integration
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23. Content annotation:
Traditional approach
Apple is in the
process of launching
merchandise
Apple
an application to
allow iPhone, iPad
and iPod Touch users application
to purchase Apple
iPod touch
merchandise straight
from their devices.
iPad
iPhone
http://www.punkt.at/ 23

24. Semantic Web approach:
Concepts, NOT simply text
Apple is in the Apple
process of launching http://my.com/Apple
an application to
allow iPhone, iPad Apple Inc.
and iPod Touch users
to purchase Apple
merchandise straight http://my.com/smartphone
from their devices.
http://my.com/iPhone
iPhone
iPhone 3G
http://my.com/iPhone3G
iPhone 3GS
http://www.punkt.at/ 24

25. PoolParty Tag Suggestions
• Support of different
formats (html, doc,
pdf, ppt, …)
• Thesaurus based
extraction
• Integrable with
CMS, CRM etc.
http://www.punkt.at/ 25

26. Zusammenspiel CKAN und PoolParty
Service für Tagvorschläge
aus Thesaurus CKAN Norway
CKAN UK
CKAN Netherlands
CKAN Austria
Andere Datenquellen
© Semantic Web Company – http://www.semantic-web.at/ 26

27. Zusammenspiel CKAN und PoolParty
Indizierung der Metadaten
CKAN Norway
CKAN UK
CKAN Netherlands
CKAN Austria
Andere Datenquellen
© Semantic Web Company – http://www.semantic-web.at/ 27

28. PoolParty System Architecture
Search Application
Search Services
CKAN
UK
Semantic
Collector Index
Indexer
CKAN RDF
Austria Cartridge
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29. Verbindung CKAN und PoolParty in
LOD 2 Projekt
• Wo suchen?
Zentrale Suche über verteilte Systeme
• Welche Suchbegriffe?
Harmonisierte Metadaten durch mehrsprachige,
semantische Tags
• Weitere Features
– Kategorisierung
– Autocomplete
– Recommender für ähnliche Datenquellen
© Semantic Web Company – http://www.semantic-web.at/ 29

30. PoolParty Demo
• HP: http://poolparty.punkt.at/PoolParty/
• Doku: https://grips.punkt.at/display/POOLDOKU/
Latest Update:
Version 2.9.2, May 2011
http://www.punkt.at/ 30

31. Danke für Ihre Aufmerksamkeit!
Mag. Thomas Schandl
t.schandl@semantic-web.at
Semantic Web Company
GmbH
Lerchenfelder Gürtel 43
A-1160 Wien
Tel. +43 1 402 12 35
office@semantic-web.at
© Semantic Web Company – http://www.semantic-web.at/ 31