Replication Package for the paper "Barriers and Enablers for Traceability and Federation in Model-Based Digital Twin Engineering"

This repository accompanies the paper “Barriers and Enablers for Traceability and Federation in Model-Based Digital-Twin Engineering”, submitted to the " Information and Software Technology" Journal, special issue on "Model- and Data-driven Digital Twins".

It contains every artefact needed to reproduce the Multi-Vocal Literature Review (MLR), the industry survey, and all data-analysis pipelines.

Figure 1 – End-to-end protocol followed in the study

Figure 2 – Search-and-selection workflow numbers

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Repository layout

Path	What you will find
MLR/	Everything related to the literature study (protocol, data-extraction sheets, analysis notebooks, tool mapping).
Survey/	Raw questions, anonymous answers, and aggregated results of the expert survey.
img/	Figures referenced in the paper & in this README.
Definitions.xlsx	Glossary of terms and controlled vocabulary used across the project.

Tip: every sub-folder includes its own README.md for deeper guidance.