Publications
Conference Publications (Preprint)
1. Härer, Felix (2025): Specification and Evaluation of Multi-Agent LLM Systems – Prototype and Cybersecurity Applications. Preprint.
Conference Publications (Peer Reviewed)
2. Sriganthan, Kapischan, Härer, Felix (2025): An Adaptive Phishing Awareness Training Environment Based on LLMs and Interactive Learning. Accepted for: IEEE Research and Technologies for Society and Industry 2025 (IEEE RTSI 2025). PDF
3. Fill, Hans-Georg, Härer, Felix, Vasic, Iva, Borcard, Daniel, Reitemeyer, Benedikt, Muff, Fabian, Curty, Simon, Bühlmann, Marcel (2024): CMAG: A Framework for Conceptual Model Augmented Generative Artificial Intelligence: ER Forum 2024, 43rd International Conference on Conceptual Modeling (ER 2024), October 28-31, 2024, Pittsburgh, PA, US. PDF
4. Härer, Felix (2023): Conceptual Model Interpreter for Large Language Models: ER Forum 2023, 42nd International Conference on Conceptual Modeling (ER 2023), November 6-9, 2023, Lisbon, PT. PDF
5. Härer, Felix (2023): Scalable Model-Based Decentralized Applications in the Cloud Using Certificates and Blockchains (Best Paper Award), in: IEEE International Conference on Public Key Infrastructure and its Applications (PKIA 2023), Sept. 8-9, 2023, Bangalore, IN. DOI: 10.1109/PKIA58446.2023.10262768. PDF
6. Härer, Felix (2022): Executable Models and
Instance Tracking for Decentralized Applications - Towards an Architecture
Based on Blockchains and Cloud Platforms, in: 3rd International Workshop on
Blockchain and Enterprise Systems (BES 2022) at Practice of Enterprise Modeling
2022 (PoEM 2022), November 23, 2022, London, UK.
CEUR-WS.org, Vol. 3298. PDF
7. Härer, Felix (2022): Towards Interoperability of Open and
Permissionless Blockchains: A Cross-Chain Query Language,
in: Proceedings of the IEEE 2022 International Conference on E-Business
Engineering (IEEE ICEBE 2022), October 14-16, 2022, Bournemouth, UK.
PDF
8. Curty, Simon, Härer, Felix, Fill, Hans-Georg
(2022): Blockchain Application Development Using Model-Driven
Engineering and Low-Code Platforms: A Survey, in: Enterprise,
Business-Process and Information Systems Modeling. BPMDS EMMSAD 2022. Lecture
Notes in Business Information Processing, vol 450. Springer, Cham. DOI: 10.1007/978-3-031-07475-2_14. PDF
9. Camozzi, Giorgio, Härer, Felix, Fill, Hans-Georg
(2022): Multidimensional
Analysis of Blockchain Data Using an ETL-based Approach, in: Wirtschaftsinformatik 2022, Proceedings. 28 (WI 2022).
PDF
10. Muff, Fabian, Härer, Felix, Fill, Hans-Georg
(2022): Trends
in Academic and Industrial Research on Business Process Management - A
Computational Literature Analysis, in: Proceedings of the 55th
Hawaii International Conference on System Sciences (HICSS-55), Towards the
Future of Enterprise Systems Track. DOI: 10.24251/HICSS.2022.874. PDF
11. Curty, Simon,
Härer, Felix, Fill, Hans-Georg (2021): Towards the Comparison of Blockchain-based Applications
Using Enterprise Modeling, in: Proceedings of the ER Demos and
Posters 2021 co-located with 40th International Conference on Conceptual
Modeling (ER 2021), CEUR-WS.org, Vol. 2958.
PDF
12. Fill, Hans-Georg, Härer, Felix, Muff,
Fabian, Curty, Simon (2021): Towards Augmented Enterprise Models as Low-Code Interfaces
to Digital Systems, in: Shishkov, Boris (Ed.): Business
Modeling and Software Design - 11th International Symposium, BMSD 2021, Sofia,
Bulgaria, July 5–7, 2021, Springer. Springer
13. Härer, Felix, Fill, Hans-Georg (2020): Past Trends and Future Prospects in
Conceptual Modeling - A Bibliometric Analysis, 39th
International Conference on Conceptual Modeling (ER 2020) (full paper
acceptance Rate 18.8%), November
3-6, 2020, Vienna, Austria. DOI: 10.1007/978-3-030-62522-1_3. PDF
14. Fill, Hans-Georg, Härer, Felix (2020): Supporting Trust in Hybrid
Intelligence Systems Using Blockchains, in: Proceedings of
the AAAI 2020 Spring Symposium on Combining Machine Learning and Knowledge
Engineering in Practice (AAAI-MAKE 2020), Stanford University, CEUR Proceedings 2600. PDF
15. Fill, Hans-Georg, Härer, Felix (2020): Usage Scenarios for
Blockchain Technologies in the Domain of Civil Law Notaries,
in: International Trends in Legal Informatics, Editions Weblaw,
Bern. Weblaw
16. Fill, Hans-Georg, Härer, Felix (2020): Storing and
Attesting Conceptual Models on Blockchains, in: Modellierung 2020 Short, Workshop and Tools & Demo
Papers, CEUR-WS.org, Vol. 2542, p. 51-52. PDF
17. Härer, Felix, Fill, Hans-Georg (2019): Decentralized Attestation of
Conceptual Models Using the Ethereum Blockchain, 21st IEEE
International Conference on Business Informatics (IEEE CBI), July 15-17,
2019, Moscow, Russia. DOI: 10.1109/CBI.2019.00019. PDF
18. Härer, Felix, Fill, Hans-Georg (2019): A Comparison of
Approaches for Visualizing Blockchains and Smart Contracts, in:
Jusletter IT Weblaw, 21
Fab. 2019, ISSN: 1664-848X. PDF
19. Fill, Hans-Georg, Härer, Felix (2018): Knowledge
Blockchains: Applying Blockchain Technologies to Enterprise Modeling.
in: Proceedings of the 51st Hawaii International Conference on System Sciences
(HICSS-51). Waikoloa Village, Hawaii, USA, pp. 4045–4054. DOI:
10.24251/HICSS.2018.509. PDF
20. Härer, Felix (2018): Decentralized Business Process
Modeling and Instance Tracking Secured by a Blockchain. in:
Proceedings of the 26th European Conference on Information Systems (ECIS 2018)
(full paper acceptance Rate 29%), Portsmouth, UK. PDF
21.
Glässner, T., Heumann, F., Keßler, L., Härer, F., Steffan, A., Fill,
Hans-Georg (2017): Experiences from the implementation of
a structured-entity-relationship modeling method in a student project.
in: 1st International Workshop on Practicing Open
Enterprise Modeling within OMiLAB (PrOse 2017) co-located with 10th IFIP WG 8.1 Working
Conference on the Practice of Enterprise Modelling (PoEM
2017). Leuven, Belgium. PDF
Journal Publications (Peer Reviewed)
1. Curty, Simon, Härer, Felix, Fill, Hans-Georg
(2023): Design of Blockchain-Based Applications Using Model-Driven
Engineering and Low-code/No-code Platforms: a structured literature review,
Software and Systems Modeling (IF 2.0). DOI: 10.1007/s10270-023-01109-1. PDF
2. Härer, Felix, Fill, Hans-Georg (2022): Decentralized Attestation and
Distribution of Information Using Blockchains and Multi-Protocol Storage,
IEEE Access (IF 3.5), Vol
10, pp. 18035-18054. DOI: 10.1109/ACCESS.2022.3150356. PDF
3. Härer, Felix (2020): Process Modeling in Decentralized
Organizations Utilizing Blockchain Consensus, Enterprise
Modelling and Information Systems Architectures (EMISAJ) – International
Journal of Conceptual Modeling, Vol. 15. DOI: 10.18417/emisa.15.13. PDF
4.
Härer, Felix, Fill, Hans-Georg (2020): Blockchain-basierte Attestierung von
Identitäten und Dokumenten, in: Jusletter
IT Weblaw, February 2020,
ISSN: 1664-848X. PDF
Book Publication (Dissertation) and Book
Chapters
1. Härer, Felix (2019): Integrierte Entwicklung und Ausführung
von Prozessen in dezentralen Organisationen. Ein Vorschlag auf Basis der
Blockchain. ISBN 9783863096823. University of
Bamberg Press, Germany. DOI: 10.20378/irbo-55721.
2. Fill, Hans-Georg, Härer, Felix
(2020): Sicherung des
intellektuellen Kapitals mit Knowledge Blockchains, in:
Blockchain - Grundlagen, Anwendungsszenarien und Nutzungspotenziale (Edition
HMD). Springer Vieweg, Wiesbaden, p. 317-335. DOI: 10.1007/978-3-658-28006-2_15.
3. Fill, Hans-Georg, Härer,
Felix, Meier, Andreas (2020): Wie
funktioniert die Blockchain?,
in: Blockchain - Grundlagen, Anwendungsszenarien und Nutzungspotenziale
(Edition HMD). Springer Vieweg, Wiesbaden, p. 3-29. DOI: 10.1007/978-3-658-28006-2_1.
4. Härer, Felix (2020): Kryptowährungen,
In: Blockchain kompakt: Grundlagen, Anwendungsoptionen und kritische Bewertung.
Springer Vieweg,
Wiesbaden, 2020, p. 32-49, DOI: 10.1007/978-3-658-27461-0.
5. Härer, Felix, Steffan,
Andreas, Herz, Alan (2016): Fallstudienbasierte
Einführung von SOM. in: Geschäftsprozessorientierte
Systementwicklung. Springer, Wiesbaden. DOI: 10.1007/978-3-658-14826-3.
Developed Prototypes (Selected)
§ LLM
Multi-Agent Specification and Evaluation (https://github.com/fhaer/multi-agent-llm-system)
Prototype for the specification and evaluation
of multi-agent LLM systems with cybersecurity applications. Several LLMs such
as GPT 4o, o3 and Llama are supported.
§ Interactive
Learning for Adaptive Phishing Awareness Training Using LLMs (https://github.com/fhaer/adaptive-phishing-awareness-training)
An
interactive phishing simulation that utilizes LLMs for generating messages,
adapted to specific users and environments, and for coaching users.
§ LLM
Conceptual Model Interpreter (https://github.com/fhaer/llm-cmi)
Prototype implementation of a model interpreter
for generating and rendering conceptual models in a conversational user
interface. Several LLMs such as ChatGPT 4 and Llama 2 are supported.
§ Itrex - Instance Tracking for Executable Models (https://github.com/fhaer/Itrex-Engine-Event-Processing)
Tracking of model-based program
executions for decentralized and cloud-based applications, implemented for AWS
Step Functions and Ethereum with Solidity smart contracts.
§ CCQL -
Cross-Chain Query Language (https://github.com/fhaer/CCQL)
SQL-like query language for multiple
blockchains, allowing for homogeneous data access, abstraction and
exchangeability of blockchain platforms.
§ Amplius - Multi-Protocol Attestation and Data
Distribution Using Blockchains (https://github.com/fhaer/amplius)
Information attestation for web-sites and arbitrary web protocols using the
Ethereum blockchain for the creation of secured links, as well as resolving and
validating links with notarized claims.
§ Decentralized
Process Modeling and Instance Tracking (https://github.com/fhaer/Decentralized-Process-Modeling-and-Instance-Tracking)
Modeling and versioning tool for interorganizational
process models and instances, based on a solidity smart contract, a JavaFX
application and a customized implementation of the Git versioning system.
§ Model-Driven JavaEE Source Code Generation from Eclipse EMF (https://github.com/fhaer/AWS-Java-Template-Code-Generator)
Generation of software
artifacts for service-oriented JavaEE architectures
from
Eclipse EMF models.
Developed for Master Thesis: https://doi.org/10.20378/irbo-50808