Dr. Tim Rietz

  • Karlsruhe Institute of Technology (KIT)
    Institute of Information Systems and Marketing (IISM)
    Kaiserstraße 89
    76133 Karlsruhe


    View Tim Rietz's Profile on LinkedIn  Follow me on ResearchGate 


About myself

Dear reader,

Thank you for your interest in my work. In general, my research revolves around designing scalable AI-based Requirements Engineering systems for end-users. That's a very high-level description. Specifically, that means that I am looking at how to learn something about what users of software want or need - by providing end-users with tools to voice their requirements and supporting analysts and researchers with analyzing qualitative data.

Sounds interesting? Do you want to discuss research, theories, or are a student interested in the topic and looking for a  thesis supervisor? Feel free to contact me anytime.


Now hiring!

If you are looking for an internship or you what to learn more about the (IT) consulting industry, let me know.



Short CV

Since 2017: Consultant at Senacor Technologies AG
Since 2017: Doctoral Researcher at the Institute of Information Systems & Service Design (ISSD) at the KIT
2015 - 2017: M.Sc. Industrial Engineering and Management at the KIT
2016: Exchange semester at the NUS (Singapore)
2011 - 2015: B.Sc. Industrial Engineering and Management at the KIT



Open topic

If there are no open topics on this side, feel free to get in touch to discuss ideas

Thesis in progress



Completed Projects

    Development of a platform that combines both a interface for collecting (eliciting) requirements and analyze the collected data (e.g., in case of interviews, content coding or processing using ML algorithms).
    Development of design principles to utilize the crowd via Amazon Mechanical Turk for coding laddering interview data.
    Industry thesis to develop a chatbot to improve the requirements engineering process for users and developers.
    Company supported evaluation of multiple types of bots for the automated conduction of HR interviews.
    Identification of issues and design principles for graphical and conversational interfaces, and subsequent derivation of a design guideline for hybrid interfaces.
    Development and evaluation of design principles for a system supporting product owners with requirements prioritization.


Seminar topics

Seamless integration: From Value Map to User Story onging
Approaches to (semi-) automated qualitative coding: A literature review on the state of the art completed
The universal shape of useful requirements? An analysis of the various forms of requirements description and specification completed
Requirements elicitation for automated interviews utilizing computer interview agents completed
State-of-the-art of interactive systems for identifying user requirements completed



  • Summer 2020: Digital Transformation of Organizations (Lecture)
  • Summer 2019: Digital Transformation of Organizations (Lecture)
  • Summer 2018: Digital Transformation of Organizations (Lecture)
  • Winter 2016/17 and Summer 2017: Teaching Assistant for the Service Design Thinking course at the Karlsruhe Service Research Institute - KSRI (Course)


Digital Artifacts

LadderBot: A requirements self-elicitation system (Version 2.0.0) .        DOI


Reviewing and Workshops

  • Program Committee Posters and Demos Track for RE2020, REFSQ2021
  • Doctoral Consortium acceptance at RE2019, ECIS2020
  • Reviewer for the International Requirements Engineering Conference (RE), International Conference on Information Systems (ICIS), European Conference on Information Systems (ECIS), International Conference on Wirtschaftsinformatik (WI), International Conference on Design Science Research in Information Systems and Technology (DESRIST)

Publication List

Accelerating Deductive Coding of Qualitative Data: An Experimental Study on the Applicability of Crowdsourcing.
Haug, S.; Rietz, T.; Maedche, A.
2021. Mensch und Computer 2021, MuC ’21, 5.-8.9.2021 Ingolstadt, Association for Computing Machinery (ACM). doi:10.1145/3473856.3473873
Designing AI-Based Systems for Qualitative Data Collection and Analysis. PhD dissertation.
Rietz, T.
2021, July 13. Karlsruher Institut für Technologie (KIT). doi:10.5445/IR/1000135146
Voice of the users: an extended study of software feedback engagement.
Tizard, J.; Rietz, T.; Liu, X.; Blincoe, K.
2021. Requirements engineering. doi:10.1007/s00766-021-00357-1
Cody: An AI-Based System to Semi-Automate Coding for Qualitative Research.
Rietz, T.; Maedche, A.
2021. Proceedings of the ACM Conference on Human Factors in Computing Systems (CHI 2021), Association for Computing Machinery (ACM). doi:10.1145/3411764.3445591
Towards the Design of an Interactive Machine Learning System for Qualitative Coding.
Rietz, T.; Maedche, A.
2020. International Conference on Information Systems, ICIS 2020 - Making Digital Inclusive: Blending the Local and the Global, India, December 13-16, 2020. Ed.: Joey George, Paper 1830, AIS eLibrary (AISeL)
Cody: An Interactive Machine Learning System for Qualitative Coding.
Rietz, T.; Toreini, P.; Maedche, A.
2020. ACM Symposium on User Interface Software and Technology (UIST 2020), Online, October 20–23, 2020. doi:10.1145/3379350.3416195
Voice of the Users: A Demographic Study of Software Feedback Behaviour [Distinguished Paper Award].
Tizard, J.; Rietz, T.; Blincoe, K.
2020. Proceedings 28th IEEE International Requirements Engineering Conference : RE’20 ; [Zurich; Switzerland; 31 August 2020 through 4 September 2020]. Ed.: T. Breaux, 55–65, Institute of Electrical and Electronics Engineers (IEEE). doi:10.1109/RE48521.2020.00018
We see we disagree: Insights from Designing a Cooperative Requirements Prioritization System.
Rietz, T.; Schneider, F.
2020. Proceedings of the 28th European Conference on Information Systems (ECIS 2020)
Discovering Core Modules of Platform-based Software Ecosystems for Non-Profit Sport Organizations.
Benke, I.; Guth, P.; Rietz, T.; Maedche, A.
2020. Proceedings der 15. Internationalen Tagung Wirtschaftsinformatik (WI2020), Potsdam, 08.-11-03.2020
Designing a conversational requirements elicitation system for end-users.
Rietz, T.
2019. 27th IEEE International Requirements Engineering Conference (RE’19), Jeju Island, ROK, September 23-27, 2019, 452–457, IEEE Computer Society. doi:10.1109/RE.2019.00061
LadderBot: A requirements self-elicitation system.
Rietz, T.; Maedche, A.
2019. 27th IEEE International Requirements Engineering Conference (RE’19), Jeju Island, ROK, September 23-27, 2019, 357–362, IEEE Computer Society. doi:10.1109/RE.2019.00045
The Impact of Anthropomorphic and Functional Chatbot Design Features in Enterprise Collaboration Systems on User Acceptance.
Rietz, T.; Benke, I.; Maedche, A.
2019. 14. Internationale Tagung Wirtschaftsinformatik (WI2019)