1. TMRA 2009
Open Space Session November 12, 2009
Event based modelling!
Dr. Lutz Maicher
Topic Maps Lab at the University of Leipzig
maicher@informatik.uni-leipzig.de
Institut für Informatik
Automatische Sprachverarbeitung topicmapslab.de

2. Einführung in Topic Maps
Observation
The general approach of how we look at topic maps and
how we present data in topic maps:
A topic represents all information
about one subject ..
Event based modelling
Dr. Lutz Maicher, Topic Maps Lab maicher@informatik.uni-leipzig.de
Institut für Informatik
Automatische Sprachverarbeitung topicmapslab.de 2

3. Einführung in Topic Maps
Event based modelling
Dr. Lutz Maicher, Topic Maps Lab maicher@informatik.uni-leipzig.de
Institut für Informatik
Automatische Sprachverarbeitung topicmapslab.de 3

4. Einführung in Topic Maps
But subjects change in time …
• And most of the ontologies don’t reflect it.
• And most of the applications don’t reflect it.
• Problem
• We restrict ourselves.
• Solution
• We should look more event based on the data.
Event based modelling
Dr. Lutz Maicher, Topic Maps Lab maicher@informatik.uni-leipzig.de
Institut für Informatik
Automatische Sprachverarbeitung topicmapslab.de 4

5. Einführung in Topic Maps
“Semantische Technologien und Medieninformatik”
M&C 2009, Berlin, Dr. Lutz Maicher
Institut für Informatik
Automatische Sprachverarbeitung topicmapslab.de 5

6. Einführung in Topic Maps
Call for participation: Change your ontologies!
• Represent events as your key facts
• See you topic maps as stream of facts
• Example:
– Clara Schumann started education in Leipzig in 03-1809
– Clara Schumann bought a coffee in the CoffeBaum in 02-03-1810
– Clara Schumann stopped education in Leipzig in 04-1809
– ….
• Please be aware:
– your ontology drives your application
– You will change your application
– You will have pain, but you might see the hill
Event based modelling
Dr. Lutz Maicher, Topic Maps Lab maicher@informatik.uni-leipzig.de
Institut für Informatik
Automatische Sprachverarbeitung topicmapslab.de 6

7. Einführung in Topic Maps
Benefit
• We have the whole life cycle of each subject in the
database !!!!!
• We can create time slices for the usage in the
applications
– so you might get the “good old” get all information view on the
subject
– But you might have a lot of different other “views” to your data
(i.e. Clara Schumann in Leipzig in the 1810’s)
• But it doesn’t look so nice in Omnigator / Maiana
Event based modelling
Dr. Lutz Maicher, Topic Maps Lab maicher@informatik.uni-leipzig.de
Institut für Informatik
Automatische Sprachverarbeitung topicmapslab.de 7

8. Einführung in Topic Maps
Contact and impressum
• Chair of the Topic Maps Labs: Dr. Lutz Maicher
Abteilung für Automatische Sprachverarbeitung
maicher@informatik.uni-leipzig.de
+49-341-97-32303
• Cooperation with the HHL
Event based modelling
Dr. Lutz Maicher, Topic Maps Lab maicher@informatik.uni-leipzig.de
Institut für Informatik
Automatische Sprachverarbeitung topicmapslab.de 8