Christoph Gebhardt

schoolETH Zurichbar_chart#1060 Global Rank

Total Papers

HCI Rank

#1060

Research Areas

Years Active

Recent Publications

Automating UI Optimization through Multi-Agentic Reasoning

We present AutoOptimization, a novel multi-objective optimization framework for adapting user interfaces. From a user’s verbal preferences for changing a UI, our framework guides a prioritization-based Pareto frontier search over candidate layouts. It selects suitable objective functions for UI placement while simulta…

UIST '252nd AuthorMixed Reality Workspaces +1

Preference-Guided Multi-Objective UI Adaptation

3D Mixed Reality interfaces have nearly unlimited space for layout placement, making automatic UI adaptation crucial for enhancing the user experience. Such adaptation is often formulated as a multi-objective optimization (MOO) problem, where multiple, potentially conflicting design objectives must be balanced. Howeve…

CHI '254th AuthorHonorable MentionHuman-LLM Collaboration

Continual Human-in-the-Loop Optimization

Optimal input settings vary across users due to differences in motor abilities and personal preferences, which are typically addressed by manual tuning or calibration. Although human-in-the-loop optimization has the potential to identify optimal settings during use, it is rarely applied due to its long optimization pr…

UIST '242nd AuthorAR Navigation & Context Awareness +1

SituationAdapt: Contextual UI Optimization in Mixed Reality with Situation Awareness via LLM Reasoning

Mixed Reality is increasingly used in mobile settings beyond controlled home and office spaces. This mobility introduces the need for user interface layouts that adapt to varying contexts. However, existing adaptive systems are designed only for static environments. In this paper, we introduce SituationAdapt, a system…

UIST '232nd AuthorMixed Reality Workspaces +1

InteractionAdapt: Interaction-driven Workspace Adaptation in Situated Virtual Reality

Virtual Reality (VR) has the potential to transform how we work: it enables flexible and personalized workspaces beyond what is possible in the physical world. However, while most VR applications are designed to operate in a single empty physical space, work environments are often populated with real-world objects and…

MOBILEHCI '234th AuthorSocial & Collaborative VR +3

ViGather: Inclusive Virtual Conferencing with a Joint Experience Across Traditional Screen Devices and Mixed Reality Headsets

Teleconferencing is poised to become one of the most frequent use cases of immersive platforms, since it supports high levels of presence and embodiment in collaborative settings. On desktop and mobile platforms, teleconferencing solutions are already among the most popular apps and accumulate significant usage time--…

CHI '211st AuthorDrone Interaction & Control

Optimization-based User Support for Cinematographic Quadrotor Camera Target Framing

To create aesthetically pleasing aerial footage, the correct framing of camera targets is crucial. However, current quadrotor camera tools do not consider the 3D extent of actual camera targets in their optimization schemes and simply interpolate between keyframes when generating a trajectory. This can yield videos wi…

UIST '191st AuthorEye Tracking & Gaze Interaction +2

Learning Cooperative Personalized Policies from Gaze Data

An ideal Mixed Reality (MR) system would only present virtual information (e.g., a label) when it is useful to the person. However, figuring out when a label is useful is challenging; it depends on a variety of factors, including the current task, previous knowledge, context, etc. In this paper, we propose a Rein…

CHI '182nd AuthorMixed Reality Workspaces +1

AdaM: Adapting Multi-User Interfaces for Collaborative Environments in Real-Time

Developing cross-device multi-user interfaces (UIs) is a challenging problem. There are numerous ways in which content and interactivity can be distributed. However, good solutions must consider multiple users, their roles, their preferences and access rights, as well as device capabilities. Manual and rule-based solu…

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