Publications

Full Papers

Broken Contracts? Towards Automated Conformance Testing for HTTP Semantics. Keckl, Matthias; Gruber, Lorenz; Müller, Peter; Tennert, Andreas; Ende, Markus; Braun, Peter; Herbst, Nikolas; in Proceedings of the 22nd International Conference on Web Information Systems and Technologies - WEBIST (2026). 15–26. SciTePress.

Best Paper Runner-Up, 1/3
- [ BibTeX ]
- [ DOI ]
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@conference{webist26, author = {Keckl, Matthias and Gruber, Lorenz and Müller, Peter and Tennert, Andreas and Ende, Markus and Braun, Peter and Herbst, Nikolas}, booktitle = {Proceedings of the 22nd International Conference on Web Information Systems and Technologies - WEBIST}, keywords = {descartes}, note = {Best Paper Runner-Up, 1/3}, organization = {INSTICC}, pages = {15-26}, publisher = {SciTePress}, title = {Broken Contracts? Towards Automated Conformance Testing for HTTP Semantics}, year = 2026 }
The FISHNET Case Study on Implementing and Scaling a Complex Earth Observation Workflow. Gruber, Lorenz; Herbst, Nikolas; Esch, Thomas; Nguyen, Thanh; Friedl, Peter; Kounev, Samuel; in Proceedings of the 21nd IEEE International Conference on e-Science (2025). IEEE.
- [ BibTeX ]
- [ DOI ]
@inproceedings{Gruber2025-eScience-FISHNET, author = {Gruber, Lorenz and Herbst, Nikolas and Esch, Thomas and Nguyen, Thanh and Friedl, Peter and Kounev, Samuel}, booktitle = {Proceedings of the 21nd IEEE International Conference on e-Science}, keywords = {t_interdisciplinary}, month = {09}, publisher = {IEEE}, title = {The FISHNET Case Study on Implementing and Scaling a Complex Earth Observation Workflow}, year = 2025 }

Short Papers

Modelling and Optimizing a Graph-based Settlement Delineation and Analysis Workflow. Gruber, Lorenz; Herbst, Nikolas; Kounev, Samuel; Esch, Thomas; Nguyen, Thanh; in Softwaretechnik-Trends Band 44, Heft 4 (2024). Gesellschaft für Informatik e.V.
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@incollection{incollection, author = {Gruber, Lorenz and Herbst, Nikolas and Kounev, Samuel and Esch, Thomas and Nguyen, Thanh}, booktitle = {Softwaretechnik-Trends Band 44, Heft 4}, keywords = {t_interdisciplinary}, publisher = {Gesellschaft für Informatik e.V.}, title = {Modelling and Optimizing a Graph-based Settlement Delineation and Analysis Workflow}, year = 2024 }

Workshop Papers

From Monolith to Serverless: Running a Component-Based Scientific Workflow Across Execution Paradigms. Gruber, Lorenz; Herbst, Nikolas; Copik, Marcin; Kounev, Samuel; in Companion of the 17th ACM/SPEC International Conference on Performance Engineering (2026). 148–153. Association for Computing Machinery, Italy.
- [ Abstract ]
- [ BibTeX ]
- [ URL ]
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Today, researchers and domain experts in remote sensing typically design their workflows from scratch with limited sharing and reusability across teams and organizations. A component-based approach to workflow engineering addresses these issues by modeling workflows as a DAG of self-contained, reusable tasks, each characterized by its input and output schema, semantics, and metadata. This abstraction enables interchangeable implementations and reuse in future workflows. Furthermore, it would enable fine-grained resource allocation required for a serverless execution of scientific workflows. We demonstrate the flexibility gained in new execution paradigms by implementing a component-based workflow in the Earth Observation (EO) domain. Specifically, we deploy the workflow on a monolithic system and a serverless Function-as-a-Service (FaaS) platform. We show that the monolithic deployment outperforms serverless execution due to greater availability of computing resources and reduced data transfer requirements. Furthermore, our custom scheduler in the local deployment can leverage the DAG structure of inter-task dependencies, in contrast to the limited parallelization options available in application-agnostic schedulers in FaaS systems. In contrast, the serverless deployment could significantly reduce the estimated cost of a workflow execution. Our component-based approach to workflow engineering enabled the decomposition of the computation into a parallel chain of self-contained serverless functions, thereby improving resource utilization, component reuse, and cost efficiency.

@inproceedings{10.1145/3777911.3800635, abstract = {Today, researchers and domain experts in remote sensing typically design their workflows from scratch with limited sharing and reusability across teams and organizations. A component-based approach to workflow engineering addresses these issues by modeling workflows as a DAG of self-contained, reusable tasks, each characterized by its input and output schema, semantics, and metadata. This abstraction enables interchangeable implementations and reuse in future workflows. Furthermore, it would enable fine-grained resource allocation required for a serverless execution of scientific workflows. We demonstrate the flexibility gained in new execution paradigms by implementing a component-based workflow in the Earth Observation (EO) domain. Specifically, we deploy the workflow on a monolithic system and a serverless Function-as-a-Service (FaaS) platform. We show that the monolithic deployment outperforms serverless execution due to greater availability of computing resources and reduced data transfer requirements. Furthermore, our custom scheduler in the local deployment can leverage the DAG structure of inter-task dependencies, in contrast to the limited parallelization options available in application-agnostic schedulers in FaaS systems. In contrast, the serverless deployment could significantly reduce the estimated cost of a workflow execution. Our component-based approach to workflow engineering enabled the decomposition of the computation into a parallel chain of self-contained serverless functions, thereby improving resource utilization, component reuse, and cost efficiency.}, address = {New York, NY, USA}, author = {Gruber, Lorenz and Herbst, Nikolas and Copik, Marcin and Kounev, Samuel}, booktitle = {Companion of the 17th ACM/SPEC International Conference on Performance Engineering}, keywords = {myown}, pages = {148–153}, publisher = {Association for Computing Machinery}, series = {ICPE Companion '26}, title = {From Monolith to Serverless: Running a Component-Based Scientific Workflow Across Execution Paradigms}, year = 2026 }

Vision and Position Papers

Self-Aware Scientific Workflow Orchestration based on a Blackboard Architecture. Kounev, Samuel; Linke, David; Dingel, David; Ferger, Nicola; Gruber, Lorenz; Herbst, Nikolas; Schwinger, Maximilian; Chard, Kyle; Foster, Ian; in Proceedings of the 2026 IEEE International Conference on Autonomic Computing and Self-Organizing Systems (ACSOS 2026), Sept. 7-11, Cesena, Italy (2026). IEEE.
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@inproceedings{KoLiDiFeGrHeScChFo26-ACSOS-Blackboard, author = {Kounev, Samuel and Linke, David and Dingel, David and Ferger, Nicola and Gruber, Lorenz and Herbst, Nikolas and Schwinger, Maximilian and Chard, Kyle and Foster, Ian}, booktitle = {Proceedings of the 2026 IEEE International Conference on Autonomic Computing and Self-Organizing Systems (ACSOS 2026), Sept. 7-11, Cesena, Italy}, keywords = {descartes}, month = {09}, publisher = {IEEE}, title = {Self-Aware Scientific Workflow Orchestration based on a Blackboard Architecture}, year = 2026 }

Full Papers

Short Papers

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