Temporal Aspects in 
Organizational Memory Information Systems: 
A Brief Survey

Ludger van Elst
Knowledge Management Deparatment
German Research Center for Artificial Intelligence (DFKI), Kaiserslautern

"The right information to the right persons at the right time", this is often stated as the overall goal of organizational memory information systems (OMIS) for supporting knowledge management (KM) endeavours. How to determine the right information is extensively being investigated by the information retrieval community.The first answer here was "The right, i.e. the most relevant  information is a document that is most similar to an information need expressed, e.g. by a query". One extension to this approach is the integration of user modeling aspects, e.g. by filtering out documents a user already knows or by utilizing the user model as search context in order to enhance retrieval precision.


Information Delivery

Application Driven



> Are there any differences between 'temporal ontology' and 'time
> ontology'?

No, I don't think there is a strict difference between these two terms.

The DAML-Time ontology [1] is a popular time ontology. An OWL version
is the ontology is also available [2]. If you are interested in a time
ontology reasoner, check out [3].

[1] http://www.cs.rochester.edu/~ferguson/daml/

[2] http://www.isi.edu/~pan/damltime/time-entry.owl

[3] http://cobra.umbc.edu/time.html