Edgars Rencis

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The transformation driven architecture (TDA) is a system building (in particular, tool building) approach that is based on model transformations, interface metamodels with corresponding engines, and event/command mechanism. This paper describes a metamodel and the corresponding engine for graph diagram presentations within TDA. The facilities of the(More)
Graph transformation provides an intuitive mechanism for capturing model transformations. In the current paper, we investigate and compare various graph transformation tools using a compact practical model transformation case study carried out as part of the AGTIVE 2007 Tool Contest [22]. The aim of this case study is to generate formal CSP processes from(More)
In this paper a sequence of model transformation languages L0, L1, L2 is defined. The first language L0 is very simple, and for this language it is easy to build an efficient compiler to C++. The next language L1 is an extension of L0, and it contains powerful pattern definition facilities. The last language L2 is of sufficiently high level and can be used(More)
Nowadays, more and more issues need to be considered when implementing tools for domain specific languages with an orientation to the business process management. It is not enough to build just an editor for the language, various specific services need to be provided as well. In this paper, we describe our approach how to develop new domain specific(More)
The ad-hoc querying process is slow and error prone due to inability of business experts of accessing data directly without involving IT experts. The problem lies in complexity of means used to query data. We propose a new natural languageand semistar ontology-based ad-hoc querying approach which lowers the steep learning curve required to be able to query(More)
So far the traditional process modeling languages have found a limited use in the hospital settings. One of the reasons behind this delay has been the lack of clear definition of the sequence of activities that are carried out in the hospital. We propose a new modeling language (as a profile of UML Class diagrams) that captures all the useful features from(More)