Workshop program

Keynote

Authors: Daniel Varrò

Presenter: Daniel Varrò

9:00-10:00

TBA

How and Why is Change Modeled? – A Scoping Literature Review

Authors: Thomas Weber, Johan Cederbladh, Sebastian Weber, Arne Lange, Antonio Cicchetti and Ralf Reussner

Presenter: TBA

10:00-10:30

Models and metamodels change, entailing efforts to keep related artifacts consistent, i.e., to reflect the implications of the changes on them. In order to assess these implications, the changes or evolution steps themselves are, in most cases, of highest interest, compared to the states of the models or metamodels. While the states can be used to derive the changes, some information on the actual changes might get lost, e.g., whether an empty class has been renamed or deleted and readded. The use of deltas to describe changes is not limited to models and metamodels, but is also employed in other research areas. To get an overview of the used concepts and how they compare, we did a scoping literature review in the field of computer science, focused on modeling and related fields. We compared the different approaches in regard to how they model the change, what different dimensions they model, their ability to model atomic or composite changes, their completeness in modeling all possible changes, as well as their purpose. This overview allows for more efficient concept re-use across domains in regard to the modeling of changes and the different use cases realized with them.

Towards Model-Based Decision-Telling":" Design Evolution Through Decision Nodes

Authors: Andreas Domanowski, Christoph Seidl, Marie Clausnitzer, Karl Kegel and Uwe Assmann

Presenter: TBA

11:00-11:25

Model-Based Systems Engineering (MBSE) emerged as a response to the rising complexity of engineered systems, promising to reduce development times by improving consistency, collaboration, and traceability. While MBSE is effective in consolidating design artifacts into the single source of truth (SSOT), research addressing the evolution of these models during system development remains limited. In this paper, we address this gap by proposing a framework for capturing the evolution of MBSE models using a storytelling approach, focusing on the design decisions that drive this evolution. Our approach involves recording model evolution using version control systems and structuring decision information in natural language ”Y-statements” to ensure traceability between the mode

YANG-APR":" Towards Supporting Evolution in Model-driven Network Management Systems

Authors: Hesham Elabd, Juergen Dingel, Robert Lee and Ali Tizghadam

Presenter: TBA

11:25-11:50

In model-driven network ecosystems, high-level specifications such as YANG data models define APIs that engineers extend with custom code and handlers. When the model evolves, it can become misaligned with its API implementation, which typically requires manual, costly, and error-prone realignment, highlighting the need for automated repair. This paper presents our ongoing work on an automated repair approach to resynchronize evolving YANG models with their API implementations, using a four-stage pipeline":" (i) localize compatible-vs-breaking diffs between the current and updated models, (ii) enrich each diff record with contextual information, (iii) instantiate precise transformation rules for every change, and (iv) apply those rules to generate a repaired version of the code, complete with a reviewable change log for engineer validation. To explore the feasibility of this approach, we have developed an initial prototype—YANG-APR—that targets five common model evolution scenarios":" datatype change, node rename, endpoint URL rename, endpoint removal, and endpoint addition. We illustrate the approach through two representative cases":" a breaking datatype modification and a non-breaking endpoint addition. These early results show promising potential to facilitate model-implementation coevolution, providing a foundation for continued development and broader evaluation.

GEM":" Towards a Model-Driven Graphical Editor Migration Framework

Authors: Mohamadreza Sabeghi, Richard F. Paige and Dimitris Kolovos

Presenter: TBA

11:50-12:15

As graphical modeling editors evolve, legacy tools face growing obsolescence, prompting the need for effective migration strategies. This paper introduces GEM, a model-driven migration framework that leverages a pivot model to enable reusable and extensible transformations across heterogeneous platforms. By preserving detailed visualization semantics and simplifying migration through an intermediary representation, GEM facilitates modernization of legacy editors. The paper also reviews existing pivot model approaches, outlines evaluation criteria for migration frameworks, and

Closing discussion & wrap-up

Authors: TBA

Presenter: TBA

12:15-12:30

Closing discussion & wrap-up