Auflistung nach Autor:in "Pietsch, Christopher"
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- KonferenzbeitragA Formal Framework for Incremental Model Slicing(Software Engineering and Software Management 2019, 2019) Taentzer, Gabriele; Kehrer, Timo; Pietsch, Christopher; Kelter, UdoWe report about a recently developed “Formal Framework for Incremental Model Slicing”, published in [Ta18]. A model slice of a model is a submodel comprising a selected model part, called slicing criterion. In addition to classical use cases from the field of program understanding, model slicing is also motivated by specifying submodels of interest to be further processed more efficiently. Since slicing criteria are often modified during software development tasks, such slices often need to be updated. A slice update can be performed by creating the new slice from scratch or by incrementally updating the existing slice. We present a formal framework for defining model slicers that support incremental slice updates. This framework abstracts from the behavior of concrete slicers as well as from the concrete model modification approach. Incremental slice updates are shown to be equivalent to non-incremental ones. Furthermore, we present a framework instantiation based on the concept of edit scripts defining application sequences of model transformation rules, along with two two concrete model slicers implemented based on this instantiation.
- KonferenzbeitragA Summary of ReVision: History-based Model Repair Recommendations(Software Engineering 2023, 2023) Ohrndorf, Manuel; Pietsch, Christopher; Kelter, Udo; Grunske, Lars; Kehrer, TimoThis work reports recent research results on history-based model repair recommendations in Model-Driven Engineering (MDE), originally published in Reference [Oh21]. Models in MDE are primary development artifacts that are heavily edited in all software development stages and can become temporarily inconsistent during editing. Model repair tools can support developers by proposing a list of the most promising repairs. Such repair recommendations will only be accepted in practice if the generated proposals are plausible and understandable and the set as a whole is manageable. Our interactive repair tool ReVision [Oh18], aims at generating repair proposals for inconsistencies introduced by past incomplete edit steps. Such an incomplete edit step is either undone or extended to the full execution of a consistency-preserving edit operation. We evaluate our approach using histories of real-world models from popular open-source modeling projects. Our experimental results confirm our hypothesis that most of the inconsistencies can be resolved by complementing incomplete edits. In fact, 92.2% of the proposed complementations could be observed in the model history.