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Research

Periodicity in Information Systems
(funded by the German Research Community - DFG)

Periodicity is a wide spread phenomenon in real world and very common in a large number of different applications and domains (e.g. financial, clinical or medical domains). Generally, periodicity or rather a periodic specification characterizes activities, which consist of regularly recurrent elements. However, the expressiveness, i.e. what kind of periodic specifications are covered, is just one important aspect of an integrated support. The more challenging aspect and still a shortcoming in present systems is the possibility to efficiently compare periodic specifications among each other. Such comparability is an important issue in a high number of applications, for example, to identify (potential) upcoming conflicts between different periodic specifications, like conflicts in time or task schedules or bottlenecks in resources (e.g. rooms, devices, people). An aggravating factor here is the use of different temporal granularities as well as the occurrence of exceptions in periodic specifications. In addition real world scenarios typically have to deal with a high number of periodic specifications. Thus, comparisons between periodic specifications must retain their efficiency also in case of large data sets.In this research project all aspects concerned with the support of periodicity in information systems are systematically examined and approaches developed.

 

Publications

 

Teaching

Internal Reports

WS 2004/2005

SS 2004

WS 2003/04

SS 2003

WS 2002/03

SS 2002