Software Architecture

Stephen John Warnett, BSc (Hons) MSc

Research Group Software Architecture

Währinger Straße 29
1090 Wien
Room : 5.40

T: +43-1-4277-78547

stephen.warnett(at)univie.ac.at

u:cris portal

Courses

Publications

MLOps pipeline generation for reinforcement learning: A low-code approach using large language models. / Warnett, Stephen John ; Ntentos, Evangelos ; Zdun, Uwe.
In: Journal of Systems and Software, Vol. 235, 112760, 05.2026.

Publications: Contribution to journal › Article › Peer Reviewed

doi.org/10.1016/j.jss.2025.112760

AI-Powered Architecting for Industry 4.0 Cyber-Physical Production Systems: A Novel Approach, Research Problems and Challenges. / Warnett, Stephen J. (Corresponding author); Zdun, Uwe.
Software Architecture. ECSA 2025 Tracks and Workshops: Limassol, Cyprus, September 15–19, 2025, Proceedings. ed. / Domenico Bianculli; Hassan Sartaj; Vasilios Andrikopoulos; Cesare Pautasso; Tommi Mikkonen; Jennifer Perez; Tomáš Bureš; Martina De Sanctis; Henry Muccini; Elena Navarro; Mohamed Soliman; Uwe Zdun. Springer Nature, 2025. p. 155-168 (Lecture Notes in Computer Science, Vol. 15982).

Publications: Contribution to book › Contribution to proceedings › Peer Reviewed

On the understandability of machine learning practices in deep learning and reinforcement learning based systems. / Ntentos, Evangelos ; Warnett, Stephen J.; Zdun, Uwe.
In: Journal of Systems and Software, Vol. 222, 112343, 04.2025.

Publications: Contribution to journal › Article › Peer Reviewed

Rule-Based Assessment of Reinforcement Learning Practices Using Large Language Models. / Ntentos, Evangelos ; Warnett, Stephen J.; Zdun, Uwe.
2025 IEEE/ACM 4th International Conference on AI Engineering - Software Engineering for AI (CAIN): Ottawa, Ontario, Canada 27–28 April 2025, Proceedings. IEEE, 2025. p. 1-11.

Publications: Contribution to book › Contribution to proceedings › Peer Reviewed

A model-driven, metrics-based approach to assessing support for quality aspects in MLOps system architectures. / Warnett, Stephen John ; Ntentos, Evangelos ; Zdun, Uwe.
In: Journal of Systems and Software, Vol. 220, 112257, 02.2025.

Publications: Contribution to journal › Article › Peer Reviewed

Bridging the Gap Between MLOps and RLOps: An Industry 4.0 Case Study on Architectural Design Decisions in Practice. / Warnett, Stephen J.; Zdun, Uwe.
2025 IEEE 22nd International Conference on Software Architecture (ICSA 2025): March 31 2025 to April 4 2025, Odense, Denmark, Proceedings. IEEE, 2025. p. 232-242.

Publications: Contribution to book › Contribution to proceedings › Peer Reviewed

On the Understandability of MLOps System Architectures. / Warnett, Stephen John ; Zdun, Uwe.
In: IEEE Transactions on Software Engineering, Vol. 50, No. 5, 05.2024, p. 1015-1039.

Publications: Contribution to journal › Article › Peer Reviewed

Supporting Architectural Decision Making on Training Strategies in Reinforcement Learning Architectures. / Ntentos, Evangelos ; Warnett, Stephen John ; Zdun, Uwe.
Proceedings - IEEE 21st International Conference on Software Architecture: 4 - 8 June 2024, Hyderabad, India. Piscataway: IEEE, 2024. p. 90-100 (Working IEEE/IFIP Conference on Software Architecture ).

Publications: Contribution to book › Contribution to proceedings › Peer Reviewed

Decision-Making Support for Data Integration in Cyber-Physical-System Architectures. / Ntentos, Evangelos; Amiri, Amirali; Warnett, Stephen J. et al.
Service-Oriented Computing: 21st International Conference, ICSOC 2023, Rome, Italy, November 28 – December 1, 2023, Proceedings, Part I. Springer, 2023. p. 137-152 (Lecture Notes in Computer Science).

Publications: Contribution to book › Contribution to proceedings › Peer Reviewed

Architectural Design Decisions for the Machine Learning Workflow. / Warnett, Stephen J.; Zdun, Uwe.
In: Computer, Vol. 55, No. 3, 01.03.2022, p. 40-51.

Publications: Contribution to journal › Article › Peer Reviewed

Architectural Design Decisions for Machine Learning Deployment. / Warnett, Stephen J.; Zdun, Uwe.
2022 IEEE 19th International Conference on Software Architecture (ICSA), Honolulu, HI, USA. Piscataway, NJ: IEEE, 2022. p. 90-100.

Publications: Contribution to book › Contribution to proceedings › Peer Reviewed

Projects

BEAM: Bridging SW Engineering, MLOps, and Operational Agents: Foundations for Agentic AI in Cyber-Physical Systems

Zdun, U. (Project Lead), Warnett, S. J. (Scientific Project Staff) & Ennsberger, S. (Admin)

1/04/26 → 31/03/29

Project: Research cooperation

MODIS: MLOps for Distributed Intelligent Cyber-physical Systems

Zdun, U. (Project Lead), Ntentos, E. (Scientific Project Staff), Warnett, S. J. (Scientific Project Staff), Fang, Z. (Scientific Project Staff), Chowdhary, D. (Scientific Project Staff), Urdih, F. (Scientific Project Staff), Amiri, A. (Scientific Project Staff) & Ennsberger, S. (Admin)

1/01/23 → 31/12/25

Project: Research cooperation