Transcript Applying semantic web technologies to the meta

Evangelia Mitsopoulou, St George’s University of London
Panagiotis Bamidis, Aristotle University of Thessaloniki
Daniela Giordano, University of Catania, Italy
Stefan Dietze, Open University, UK
Charalampos Bratsas, Aristotle University of Thessaloniki
MedBiquitous Annual Conference 2011
1

Problem
◦ Lack of standardisation mechanisms, that enable state-of-the-art
of medical educational resources to be discovered, retrieved,
shared and re-used across European Academic Institutions

Solution
◦ Standardised format of description of the resources by means of metadata
◦ Metadata need to be described by state-of-the-art e-learning standards
and make use of their many advantages Semantic Web, Linked Data

Aim
◦ To improve medical & healthcare education
MedBiquitous Annual Conference 2011
2

General Characteristics
 To describe core data about the resources
 To describe educational aspects of the resources
 To be implemented by state-of-the-art specifications

Need to be widely used (interoperable)
 Reusing existing e-learning standards

Should not reinvent the wheel
 Extending e-learning standards to describe new concepts
i.e. Repurposing, Companionship, Attention
MedBiquitous Annual Conference 2011
3
Know-Why ?
MedBiquitous Annual Conference 2011
4

Healthcare LOM describes medical resources
WEB of Documents
Metadata
Resource 1
Lack of interlinking
hyperlinks
Resource 3
Metadata
hyperlinks
www
hyperlinks
Metadata
Resource 2
Metadata
Healthcare LOM compliant
Serialised in XML
MedBiquitous Annual Conference 2011
5
WEB of Data
Data Set
mEducator Resource 1
Metadata
Metadata mEducator Resource 3
Linking Open Data Cloud
mEducator Resource 2
Metadata
Metadata
RDF Schema compliant
Linking Open Data cloud diagram, by Richard Cyganiak and Anja Jentzsch http://lod-cloud.net/
Serialised in XMLRDF/XML
Use Http Uri’s
MedBiquitous Annual Conference 2011
6
Know-How?
MedBiquitous Annual Conference 2011
7
Properties
Some of them need
also the defintion of
Classes
5. mEducator Controlled
Vocabularies
MedBiquitous Annual Conference 2011
9
MedBiquitous Annual Conference 2011
10

Standardisation format in order to enable
sharing and retrieving of resources is essential

Choice of the right format (RDF/XML) will link
the data of the Web. Benefits:
◦ Access existing knowledge
◦ Interoperability between resources

Shift towards an Ontology
MedBiquitous Annual Conference 2011
11

Metadata scheme specification & best practises guidelines:
http://www.meducator.net/?q=content/mEducator_Scheme_bpg#RecentChanges

Metadata scheme in RDF:
http://www.meducator.net/mdc/schema.rdf

Controlled Vocabularies in RDF
◦ Repurposing:
http://www.meducator.net/mdc/repurposing.rdf
◦ Resource Type:
◦ Media Type:
http://www.meducator.net/mdc/resourceType.rdf
http://www.meducator.net/mdc/mediaType.rdf
◦ Educational Outcomes:
http://www.meducator.net/mdc/educationalOutcome.rdf
◦ Educational Level:
http://www.meducator.net/mdc/educationalLevel.rdf
MedBiquitous Annual Conference 2011
12
Contact:
Evangelia Mitsopoulou
[email protected]
MedBiquitous Annual Conference 2011
13
◦ Educational Outcomes
(Tuning, Tomorrow’s Doctor, Scottisch
Doctor, French Taxonomy)
◦ Media Type
◦ Resource Type
RDN/LTSN, Dublin Core,
Healthcare LOM, MeSH
 Educational Practise
 Professional Practise
 Reference
◦ Educational Level
◦ Repurposing Types
MedBiquitous Annual Conference 2011
14
title
creator
Medical
Resource
John
educationalObjectives
Member Of
keywords
OxfordUniversity
Cardiology
sameAS
MESH Term
Is located
was founded
SNOMED Term
MedBiquitous Annual Conference 2011
15
Aim: To enable specialized state-of-the-art medical
educational content of varying types to be
discovered, retrieved, shared and re-used across
European higher academic institutions.
How: By implementing and evaluating two different
solutions
• A “mashup” platform that aggregates content published in
isolated Learning Content Management Systems (LCMS)
• A federated architecture of LCMSs based on Semantic Web
Services for search, interchange and delivery of learning objects