Lehrstuhl Internet-Technologie
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Lehrstuhl Internet-Technologie
Research Publications
Research Projects
In the area of agent-oriented modeling and agent-based simulation we pursue the Agent-Object-Relationship (AOR) Modeling and Simulation research and development project.
As the co-ordinator of the workpackage I1 on Rule Markup Languages within the Network of Excellence REWERSE, funded by the EU 6th Framework Program from March 2004 to February 2008, we conduct several research projects:
A General Markup Language for Rules
This project is about the design of a general Web rule language on the basis of Rule Markup Language (RuleML) and Semantic Web Rule Language (SWRL). We propose a general markup framework for integrity rules, derivation rules and reaction rules (R2ML). Rule concepts are defined with the help of MOF/UML, a subset of the UML class modeling language proposed by the Object Management Group (OMG) for the purpose of 'meta-modeling', i.e. for defining languages conceptually on the level of an abstract (semi-visual) syntax. From these MOF/UML language models we can obtain concrete markup syntax by applying a mapping procedure for generating corresponding languages from parameterized DTDs.
Visual Rules Modeling
The modeling language, used in the communication between business/domain analysts and business/domain experts for analysing and documenting system requirements must not be 'technical', but should allow (semi-)visual and/or natural-language-like rule expressions, which can be understood by business/domain experts without extensive technical training. Both ORM and UML offer a semi-visual (diagrammatic) language for information modelling allowing a limited number of embedded rule types (in particular, integrity constraints and derivation rules). In order to simplify rules modeling, we are developing a tool for visual rule modeling. The detailed specification of visual notation for rules modeling, its compliance with formal logic representation of rules, technical issues and functionality of the tool will be published here.
Verbalization
A Controlled English (CE) vocabulary and rule language can be used for two purposes:
- capturing vocabularies and rules, and
- verbalizing vocabularies and rules.
The second purpose, verbalizing visually and/or formally represented vocabularies and rules, is important to be able to present rules to domain experts for validation. This is an essential building block in any rule-based methodology. Being able to capture rules in English is a desirable, but more advanced, feature of such a methodology. In this subproject we are more concerned with developing a CE for the purpose of verbalization. We may consider the issue of rule capture in the future. We want to be able to verbalize various kinds of expressions and statements from visual (UML) and formal (OCL, RDF, OWL) vocabulary and rule languages.
