European Data Forum, 6-7 July 2012

1. Thomas Kurz and Sergio Fernández
Copenhagen, July 6-7, 2012
European Data Forum
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2. Linked Media Framework
 An easy-to-setup server application that bundles central Semantic
Web technologies:
●
RDF store
●
Linked Data server
●
SPARQL 1.1 endpoint
●
Semantic Search
●
LDPath
●
LDCache
●
SKOS editor
●
Reasoner
●
Versioning
●
etc...
 Open Source, available at: http://lmf.googlecode.com
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3. LMF Architecture
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4. Linked Data server
 RDF store
 SPARQL 1.1 endpoint
 Linked Data Explorer
 Read-Write Web paradigm
● Authorization based on WebID and WebACL
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5. LMF Semantic Search
 Facetted Search over content and metadata
 SOLR compatible API
 RDF Path Language (LDPath) for configurable
metadata indexing
●
Multiple Cores with different configurations
to adapt to different search requirements
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6. LMF Reasoning
 Rule-based reasoning triggered over
triples in the LMF triple store to represent
implicit knowledge
 Reason maintenance allows to describe
justifications for inferences
 Adapted version of sKWRL rule
language:
 more efficient implementation
 improved reason maintenance
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7. LMF Linked Data Caching
 LDCache transparently retrieves linked
resources from the Linked Data cloud when
needed (e.g. LDPath or SPARQL query)
 Powerful component for integrating with other
information systems exposing their data as
Linked Media or Linked Data
 Adapters for services offering their data in
proprietary formats (e.g. YouTube, Vimeo, …)
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8. LMF Versioning
 Keeps track of any resource updates in the
triple store
 Providing information about trust and
provenance
of data, e.g. annotations added to the system
 Transaction-based versioning
 Implementation of the Memento protocol
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9. LMF Client Libraries
 Bindings for the LMF API
 A convenient option to use LMF for Linked Data
development
 Available for different languages
● Java
● PHP
● Javascript
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10. thanks for your attention!
http://lmf.googlecode.com
Thomas Kurz and Sergio Fernández
Knowledge and Media Technologies department
Salzburg Research Forschungsgesellschaft m.b.H.
Jakob-Haringer-Straße 5/III | Salzburg, Austria
Tel. +43 662 2288-318 | Fax +43 662 2288-222
{firstname.lastname}@salzburgresearch.at
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