Hannes Ritschel

About

Hannes Ritschel is a researcher specializing in human-robot interaction (HRI), social robotics, and adaptive behavior, with a particular focus on making robotic companions more engaging, personalized, and socially intelligent. His most significant contributions center on applying reinforcement learning to dynamically adapt robot behavior in real time — spanning linguistic style, personality expression, humor, and even non-verbal sound design — to match individual users' preferences and social signals. Ritschel's most cited work (81 citations) pioneered the shaping of robotic humor through socially-aware reinforcement learning, demonstrating that robots can learn a user's comedic sensibilities to foster genuine moments of connection. His closely related research on adaptive linguistic style (66 citations) further established that long-term engagement in HRI improves measurably when robots tailor their communication dynamically. He has extended these principles into healthcare contexts, exploring assistive robotic companions for elderly care and nutrition monitoring, reflecting a strong commitment to socially impactful applications. Notably, Ritschel has also investigated sophisticated communicative nuances rarely addressed in robotics, including irony and multimodal humor through natural language generation. With over 360 cumulative citations across his top works, his research collectively advances a vision of social robots that are not merely functional, but genuinely personable and responsive companions.

Research Focus

Key Achievements

Top Papers

1. 1
   How to Shape the Humor of a Robot - Social Behavior Adaptation Based on Reinforcement Learning

   81 citations · 2018
2. 2
   Adapting a Robot's linguistic style based on socially-aware reinforcement learning

   66 citations · 2017
3. 3
   Adaptive linguistic style for an assistive robotic health companion based on explicit human feedback

   41 citations · 2019
4. 4
   Real-Time Robot Personality Adaptation based on Reinforcement Learning and Social Signals

   34 citations · 2017
5. 5
   Personalized Synthesis of Intentional and Emotional Non-Verbal Sounds for Social Robots

   34 citations · 2019
6. 6
   Sozial interagierende Roboter in der Pflege

   32 citations · 2018
7. 7
   Drink-O-Mender

   27 citations · 2018
8. 8
   Shaping a social robot’s humor with Natural Language Generation and socially-aware reinforcement learning

   17 citations · 2018
9. 9
   Irony Man: Augmenting a Social Robot with the Ability to Use Irony in Multimodal Communication with Humans

   16 citations · 2019
10. 10
    Socially-Aware Reinforcement Learning for Personalized Human-Robot Interaction

    14 citations · 2018

Key Collaborators

Contact & Links