Toni Mattis

Berlin
,
Europe

Researcher, Programmer, Photographer

Research
Evolving the programming experience by integrating AI and machine learning into programming environments. Research aspects:
  • Software modularity & metrics
  • Automated testing & test prioritization
  • Exploratory & live programming environments
  • Large language models, Data mining & machine learning on code
Teaching
Programming, Test-Driven Development, Agile Methods, Mining Source Code Repositories, Generative AI, more...
Affiliations
PhD Student & Research Assistant at the Software Architecture Group at Hasso Plattner Institute, University of Potsdam, Germany

Contact

Mastodon
@amintos@mas.to
Twitter
@amintos
GitHub
amintos
ORCID
0000-0001-7024-9838
Email

Publications

Peer-Reviewed

2024
  1. T. Mattis, E. Krebs, M. Rinard, R. Hirschfeld, Examples out of Thin Air: AI-generated Dynamic Context to Assist Program Comprehension by Example, Programming Experience (PX/24), Lund, Sweden, Mar. 2024
    (to appear), Slides (PDF)
  2. T. Mattis, L. Böhme, E. Krebs, M. Rinard, R. Hirschfeld, Faster Feedback with AI? - A Test Prioritization Study, Programming with AI (PAI/24), Lund, Sweden, Mar. 2024
    (to appear), Slides (PDF)
2023
  1. E. Krebs, T. Mattis, P. Rein, and R. Hirschfeld, Toward Studying Example-based Live Programming in CS/SE Education, Workshop on Programming Abstractions and Interactive Notations, Tools, and Environments (PAINT) 2023, Cascais, Portugal, Oct. 2023
    Paper (Open Access), Slides (PDF)
  2. P. Rein, T. Beckmann, E. Krebs, T. Mattis, and R. Hirschfeld, Too Simple? Notions of Task Complexity used in Maintenance-based Studies of Programming Tools,IEEE/ACM International Conference on Program Comprehension (ICPC) 2023, Melbourne, Australia, May 2023,
    Paper, Preprint (PDF)
2022
  1. P. Rein, T. Beckmann, L. Geier, T. Mattis, and R. Hirschfeld, Competitive Debugging: Toward Contests Promoting Debugging as a Skill, Onward! 2022, Auckland, New Zealand, Dec. 2022
    Paper (ACM), Preprint (PDF), Poster
  2. T. Beckmann, P. Rein, T. Mattis, and R. Hirschfeld, Partial Parsing for Structured Editors, SLE 2022, Auckland, New Zealand, Dec. 2022
    Paper (ACM), Preprint (PDF)
  3. T. Mattis, T. Beckmann, P. Rein, and R. Hirschfeld, First-Class Concepts: Reified Architectural Knowledge: Beyond Dominant Decompositions, Journal of Object Technology (JOT), 2022
    Paper (Open Access)
  4. S. Reschke, F. Niephaus, T. Mattis, and R. Hirschfeld, Toward Just-in-time and Language-agnostic Mutation Testing, MoreVMs, Porto, Portugal, Mar. 2022
    Paper (ACM), Preprint (PDF)
  5. P. Rein, T. Beckmann, T. Mattis, and R. Hirschfeld, Toward Understanding Task Complexity in Maintenance-based Studies of Programming Tools, Programming Experience (PX/22), Porto, Portugal, Mar. 2022
    Paper (ACM), Preprint (PDF)
2021
  1. T. Mattis, T. Beckmann, P. Rein, and R. Hirschfeld, First-class Concepts: Reifying Architectural Knowledge Beyond the Dominant Decomposition, Virtual Workshop on Context-oriented Programming (COP), Jul. 2021
    Paper (ACM), Preprint (PDF)
  2. D. Meier, T. Mattis, and R. Hirschfeld, Toward Exploratory Understanding of Software Using Test Suites, Programming Experience (PX/21), Cambridge, UK, Mar. 2021
    Paper (ACM), Preprint (PDF)
2020
  1. T. Mattis, P. Rein, F. Dürsch, and R. Hirschfeld, RTPTorrent: An Open-source Dataset for Evaluating Regression Test Prioritization, 17th International Conference on Mining Software Repositories (MSR), Seoul, South Korea, May 2020
    Paper (ACM), Preprint (PDF)
  2. T. Mattis, P. Rein, and R. Hirschfeld, Three Trillion Lines: Infrastructure for Mining GitHub in the Classroom, First International Workshop on ENgineering Intelligent Applications Code (ENIAC20), Porto, Portugal, March 2020
    Paper (ACM), Preprint (PDF)
  3. T. Mattis and R. Hirschfeld, Lightweight Lexical Test Prioritization for Immediate Feedback, The Art, Science, and Engineering of Programming, Vol. 4, Nr. 3.
    Paper (Open Access)
2019
  1. T. Mattis, R. Hirschfeld, Ambiguous, Informal, and Unsound: Metaprogramming for Naturalness, Workshop on Metaprogramming Techniques and Reflection (META) 2019, Athens, Greece, Oct. 2019
    Paper (ACM), Preprint (PDF), Slides (PDF)
  2. P. Rein, J. Lincke, S. Ramson, T. Mattis, F. Niephaus, and R. Hirschfeld, Implementing Babylonian/S by Putting Examples Into Contexts: Tracing Instrumentation for Example-based Live Programming as a Use Case for Context-oriented Programming, Workshop on Context-oriented Programming (COP) 2019, London, UK, July 2019
    Paper (ACM), Preprint (PDF)
  3. T. Mattis, F. Dürsch, R. Hirschfeld, Faster Feedback Through Lexical Test Prioritization, 5th ACM SIGPLAN International Workshop on Programming Experience, Genoa, Italy, Apr. 2019.
    Paper (ACM), Preprint (PDF), Slides (PDF)
2018
  1. T. Mattis, R. Hirschfeld, Activity Contexts: Improving Modularity in Blockchain-based Smart Contracts using Context-oriented Programming, 10th International Workshop on Context-Oriented Programming, Amsterdam, Netherlands, July 2018.
    Paper (ACM), Preprint (PDF), Slides (PDF)
  2. S. Horschig, T. Mattis, R. Hirschfeld, Do Java Programmers Write Better Python? Studying Off-language Code Quality on GitHub, 4th ACM SIGPLAN International Workshop on Programming Experience (in Companion of the 2nd International Conference on Art, Science, and Engineering of Programming), Nice, France, Apr. 2018.
    Paper (ACM), Preprint (PDF), Slides (PDF)
  3. T. Mattis, Mining Concepts from Code using Community Detection in Co-occurrence Graphs, Conference Companion of the 2nd International Conference on Art, Science, and Engineering of Programming, Nice, France, Apr. 2018.
    Extended Abstract (ACM), Slides (PDF)
2017
  1. T. Mattis, P. Rein, S. Ramson, J. Lincke, and R. Hirschfeld, Towards Concept-aware Programming Environments for Guiding Software Modularity, Proceedings of the 3rd ACM SIGPLAN International Workshop on Programming Experience, Vancouver, BC, Canada, Oct. 2017.
    Paper (ACM), Preprint (PDF), Slides (PDF)
  2. P. Rein, J. Lincke, S. Ramson, T. Mattis, and R. Hirschfeld, Living in your Programming Environment: Enabling Exploratory Programming for Productivity Tools, Proceedings of the 3rd ACM SIGPLAN International Workshop on Programming Experience, Vancouver, BC, Canada, Oct. 2017.
    Paper (ACM), Preprint (PDF)
  3. T. Mattis, P. Rein, and R. Hirschfeld, Edit Transactions: Dynamically Scoped Change Sets for Controlled Updates in Live Programming, The Art, Science, and Engineering of Programming, Vol. 1, Nr. 2, Article 13, Apr. 2017.
    Paper (Open Access), Talk, Slides (PDF)
  4. T. Mattis, Concept-aware Live Programming: Integrating Topic Models for Program Comprehension into Live Programming Environments, in Companion to the First International Conference on the Art, Science and Engineering of Programming, Brussels, Belgium, 2017, p. 36.
    Extended Abstract (ACM)
2015 - 2016
  1. P. Rein, S. Lehmann, T. Mattis, and R. Hirschfeld, How Live Are Live Programming Systems?: Benchmarking the Response Times of Live Programming Environments, in Proceedings of the Programming Experience 2016 (PX/16) Workshop, Rome, Italy, 2016.
    Paper (ACM), Preprint (PDF)
  2. T. Mattis, P. Rein, and R. Hirschfeld, Transaction Layers: Controlling Granularity of Change in Live Programming Environments, in Proceedings of the 8th International Workshop on Context-Oriented Programming, Rome, Italy, 2016.
    Paper (ACM), Preprint (PDF)
  3. T. Mattis, J. Henning, P. Rein, R. Hirschfeld, and M. Appeltauer, Columnar Objects: Improving the Performance of Analytical Applications, in 2015 ACM International Symposium on New Ideas, New Paradigms, and Reflections on Programming and Software (Onward!), Pittsburgh, PA, USA, 2015.
    Paper (ACM), Preprint (PDF)

Technical Reports & Book Chapters

  1. F. Dürsch, P. Rein, T. Mattis, and R. Hirschfeld, Learning from Failure: A History-based, Lightweight Test Prioritization Technique Connecting Software Changes to Test Failures, HPI Technical Reports, vol. 145, Universitätsverlag Potsdam, 2020, ISBN 978-3-86956-528-6
    Book
  2. L. Bein, T. Braun, B. Daase, E. Emsbach, L. Matthes, M. Stiede, M. Taeumel, T. Mattis, S. Ramson, P. Rein, R. Hirschfeld, J. Mönig, SandBlocks: Integration visueller und textueller Elemente in Live-Programmiersysteme, Universitätsverlag Potsdam, 2020, ISBN 978-3-86956-482-1
    Book (German)
  3. T. Mattis, Supporting Program Comprehension Through Semantic Code Models, in Proceedings of the 10th Ph. D. Retreat of the HPI Research School on Service-oriented Systems Engineering, vol. 111, Universitätsverlag Potsdam, 2016, ISBN 978-3-86956-390-9, p. 171.
    Book
  4. T. Mattis, Exploring Latent Factors in Code Artifacts, in Proceedings of the 9th Ph.D. retreat of the HPI Research School on Service-oriented Systems Engineering, vol. 100, Universitätsverlag Potsdam, 2016, ISBN 978-3-86956-345-9, pp. 169–180.
    Book
  5. T. Mattis, Exploring Predictive Models in Live Programming Environments, in Proceedings of the 10th Joint Workshop of the German Research Training Groups in Computer Science, B. Etzold, R. Richter, M. Eibl, and W. Lehner, ed. Dagstuhl: Universitätsverlag der Technischen Universität Chemnitz, 2016, ISBN 978-3-944640-88-4, p. 216.
    Book
  6. J. Henning, T. Mattis, P. Rein, and E. Seckler, Real-Time Linux on Lego EV3, in Embedded Operating System Projects, U. Hentschel, D. Richter, and A. Polze, ed. Universitätsverlag Potsdam, 2014, ISBN 978-3-86956-296-4, pp. 35–64.
    Book
  7. T. Mattis, Differential Privacy, in Cloud Security Mechanisms, C. Neuhaus and A. Polze, ed. Universitätsverlag Potsdam, 2013, ISBN 978-3-86956-281-0, pp. 42–59.
    Book, Slides
  8. L. Berov, J. Henning, T. Mattis, P. Rein, R. Schreiber, E. Seckler, B. Steinert, R. Hirschfeld, Vereinfachung der Entwicklung von Geschäftsanwendungen durch Konsolidierung von Programmierkonzepten und -technologien, Universitätsverlag Potsdam, 2013, ISBN 978-3-86956-231-5.
    Book (German)

Posters

Lexical Test Prioritization, ‹Programming› 2020/21, Porto/Virtual
Concept-aware Programming Environments, FutureSOC Symposium 2019, Potsdam
Show All
Learning Semantic Concepts from Code, FutureSOC Symposium 2018, Potsdam
Mining Concepts from Code using Community Detection, Programming 2018, Nice (ACM Student Research Competition third place)
Concept-aware Live Programming, Programming 2017, Brussels (ACM Student Research Competition runner-up)
Concept-aware Live Programming, FutureSOC Symposium 2017, Potsdam
Exploring Applications of Probabilistic Models in Live Programming Environments, FutureSOC Symposium 2016, Potsdam
Optimizing Dynamic Languages for Analytical Workloads, FutureSOC Symposium 2015, Potsdam

Selected Talks and Research Visits

Teaching

Master's Theses

Lectures and Seminars

2024
  • AI for Software Engineering, MA seminar
2023/24
  • Future of Programming, MA seminar (topics: Large Language Models for Programming)
2023
2022
2020/21
  • Programming Languages, Concepts, Tools, and Environments (PLCTE), MA seminar
  • Introduction to Programming I, BA lecture
2020
2019
  • Software Engineering I, BA lecture (topics: Testing, TDD)
  • Bachelor's Project on Block-based Programming Environments (co-supervision)
2018/19
  • Introduction to Programming I, BA lecture (exercises, tutorials)
  • Bachelor's Project on Block-based Programming Environments (co-supervision)
2018
2017/18
  • Code Repository Mining, MA seminar
  • Context-oriented Programming, MA seminar
  • Programming Language Design and Implementation, BA seminar
2017
  • Source Code at Scale, Master's project
  • Software Engineering I, BA lecture (topics: Testing & TDD)
  • Programming Languages, Concepts, Tools, and Environments, MA seminar
2016/17
  • Software Modularity, BA seminar
2016
  • History of Programming Languages, BA seminar
  • Software Engineering I, BA lecture (topics: Testing & TDD)
2015/16
  • Introduction to Programming I, BA lecture (exercises, tutorials)
2015
  • Software Engineering I, BA lecture (topics: TDD)

Conference Photography

These are outgoing links to Flickr. If you want to remove a photo for privacy reasons or need additional permissions not covered by the existing license, contact me using any of the above channels.

ACM SPLASH 2019
ACM UIST 2018
ECOOP & CurryOn 2018
FutureSOC Symposium 2018
Programming 2018
ACM SPLASH 2017
OpenTechSummit 2017
ACM SPLASH 2016

Curriculum Vitae

This CV is intentionally incomplete and restricted to information that is already public. More detailed information is available upon request.

Professional Preparation and Education

2015 - current
Ph.D. Student, Software Architecture Group, Hasso Plattner Institute (HPI), University of Potsdam, Germany.
2012 - 2015
M.Sc. IT-Systems Engineering (Distinction), HPI, University of Potsdam
2012
SAP Innovation Center Potsdam, Germany
Programming Models Research for SAP HANA
2009 - 2012
B.Sc. IT-Systems Engineering (Distinction), HPI, University of Potsdam
2009
Intern, Laser Particle Acceleration Division, Institute for Radiation Physics, HZDR, Dresden, Germany
C++-based Abstractions for Simulations on HPC Clusters
2009
Intern, Chair for Software Technology, Friedrich Schiller University Jena, Germany
Java-based Genetic Programming Framework
2005 - 2009
Albert Schweitzer Academic High School for Math, Sciences, and Computer Science, Erfurt (2009 Higher Education Entrance Certificate "Abitur", Distinction)

Scientific Community Participation

Committees
Reviewer (including sub-reviews)
  • 2023 The Art, Science, and Engineering of Programming (Vol. 2)
  • 2022 The Art, Science, and Engineering of Programming (Vol. 2)
  • 2022 ECOOP
  • 2022 MSR
  • 2021 VL/HCC
  • 2021 Onward!
  • 2021 MSR
  • 2021 ICCQ
  • 2020 OOPSLA
  • 2020 ECOOP
  • 2020 VL/HCC
  • 2019 Onward!
  • 2019 The Art, Science, and Engineering of Programming (Vol. 3)
  • 2018 The Art, Science, and Engineering of Programming (Vol. 2)
  • 2018 Onward!
  • 2018 ECOOP
  • 2017 The Art, Science, and Engineering of Programming (Vol. 1)
  • 2017 Managed Languages (ManLang)
  • 2017 LASSY Workshop
  • 2017 Dynamic Languages Symposium (DLS)
  • 2016 Computer Languages, Systems and Structures (COMLAN) Journal
  • 2016 Dynamic Languages Symposium (DLS)
  • 2016 FlexMDE Workshop
Student Volunteer
  • UIST 2018, Berlin, Germany
  • Programming 2018, Nice, France
  • SPLASH 2017, Vancouver, BC, Canada
  • SPLASH 2016, Amsterdam, Netherlands
  • ECOOP 2016, Rome, Italy
Photographer
  • Programming 2019, Genoa, Italy
  • UIST 2018, Berlin, Germany
  • ECOOP 2018, Amsterdam, Netherlands
  • FutureSOC Symposium 2018, Potsdam, Germany
  • Programming 2018, Nice, France
  • SPLASH 2017, Vancouver, BC, Canada
  • OpenTechSummit 2017, Potsdam, Germany
  • Programming 2017, Brussels, Belgium
  • SPLASH 2016, Amsterdam, Netherlands

Awards and Scholarships

2018
3rd Price ACM Student Research Competition, Graduate Category, Programming 2018, Nice, France
2017
2nd Price ACM Student Research Competition, Graduate Category, Programming 2017, Brussels, Belgium
2010 - 2014
German Academic Scholarship Foundation "Studienstiftung"
2009
1st Price "Bundeswettbewerb Informatik" (Nation-wide Computer Science Contest, Press Release, German)
2009
1st Price "Jugend Forscht" Thuringia (State-wide Youth Science Contest)
Research Topic: Emerging Swarm Intelligence in Evolutionary Agent Simulations (Abstract, German)

Skills

Interests and Hobbyist Projects

Photography
My first contact with analog photography was before 2000, but I started actively photographing around 2004 when digital cameras had become affordable. I joined our institute's student photography club in 2009, covered numerous university-related events and mentored students. I enjoy multi-day hikes for remote landscape photography, cityscapes all over the world, food and event photography.
Urban Gardening
I explore how gardening works with the space, water, transportation, and waste management constraints in a city. I'm growing several types of herbs, rare chili cultivars, salads, tomatoes, tomatillos, eggplants, and berries on a few square meters on my porch while recycling organic waste and optimizing irrigation.
Cooking
I learned cooking to save money during my first university year. Once it became a daily habit and a social activity, I frequently tried and learned more complex dishes like sushi, curries, homemade pizza, pot roasts, countless hot-pots, beef and vegan burgers with homemade buns and sauces, summer rolls, and sourdough. I frequently use home-grown herbs and spices.
Games
I enjoy board games, particularly cooperative and legacy genres (Gloomhaven, Pandemic Legacy, Spirit Island) where specialization and team coordination are required, but most euro-style games with a satisfying build-up mechanic are welcome (e.g., Wingspan, Terraforming Mars, Kanban EV, Ark Nova, Cascadia). During my undergrad time, I've been an avid real-time strategy player (StarCraft II, Age of Empires), but more recently I indulged in refactoring complex traffic networks in "Cities: Skylines" or hosting modded Minecraft worlds to optimize complex farms, machinery, and magic with friends.