Variability Modeling in Quantum and Hybrid Software Systems - Replication Package

Replication Package Description This Zenodo repository contains the complete replication package associated with the study on variability management in hybrid quantum–classical software systems using Software Product Line (SPL) principles. The package is organized to support transparency, reproducibility, and reuse of the research artifacts and results. It includes the following components: Feature modelThe proposed feature model capturing structural and functional variability in hybrid quantum–classical architectures is provided: in UVL syntax, enabling automated processing and reuse with variability modeling tools; as graphical representations, illustrating the hierarchical structure, variation points, and constraints using standard feature model notation. Survey materialsThis folder documents the empirical evaluation conducted with domain experts and includes: survey_design.xlsx: the survey design, including constructs, questions, and their mapping to research questions; questionnaire_datamap.xlsx: the mapping between questionnaire items and analysis variables; survey_dataset.xlsx: the anonymized dataset containing all survey responses; free_comments_thematic_analysis.xlsx: the qualitative thematic analysis of open-ended responses. Data analysisThe file data_analysis.ipynb contains the Jupyter notebook used for data preprocessing, statistical analysis, and visualization of results. Executing this notebook allows full replication of the quantitative and qualitative analyses reported in the paper. This replication package enables independent verification of the study’s findings on the applicability, perceived usefulness, and robustness of the proposed feature model, as well as further reuse of the artifacts in future research on Quantum Software Engineering, variability modeling, and hybrid software architectures. All materials are provided for research and educational purposes.