Christian Kästner

schoolCarnegie Mellon Universitybar_chart#4587 Global Rank

Total Papers

HCI Rank

#4587

Research Areas

Years Active

Recent Publications

“I Don’t Think RAI Applies to My Model” – Engaging Non-champions with Sticky Stories for Responsible AI Work

Responsible AI (RAI) tools—checklists, templates, and governance processes—often engage RAI champions, individuals intrinsically motivated to advocate ethical practices, but fail to reach non-champions, who frequently dismiss them as bureaucratic tasks. To explore this gap, we shadowed meetings and interviewed data sc…

IUI '254th AuthorExplainable AI (XAI) +1

Orbit: A Framework for Designing and Evaluating Multi-objective Rankers

Machine learning in production needs to balance multiple objectives: This is particularly evident in ranking or recommendation models, where conflicting objectives such as user engagement, satisfaction, diversity, and novelty must be considered at the same time. However, designing multi-objective rankers is inherently…

CHI '235th+ AuthorAI-Assisted Decision-Making & Automation +2

Aspirations and Practice of ML Model Documentation: Moving the Needle with Nudging and Traceability

The documentation practice for machine-learned (ML) models often falls short of established practices for traditional software, which impedes model accountability and inadvertently abets inappropriate or misuse of models. Recently, model cards, a proposal for model documentation, have attracted notable attention, but…

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