Call for Papers:

MixHAI-XR: Human-AI Interaction and Technology-Mediated Human Representation in eXtended Reality
A workshop at ACM IUI 2027: 31st Annual ACM Conference on Intelligent User Interfaces
February 8-11, 2027 (Workshop date TBA)
Helsinki, Finland
Workshop: https://mixhai.icar.cnr.it/
IUI 2027: https://iui.acm.org/2027/

Deadline for submission of papers: November 9, 2026

MixHAI-XR explores how Artificial Intelligence (AI) is changing the way humans are represented, from realistic replicas and human digital twins to agents that combine traits of different people. Extended Reality (XR) is the central interaction paradigm through which people meet, embody, and collaborate with these representations.

ABOUT THE WORKSHOP:
FROM HUMAN REPRESENTATION TO IMMERSIVE INTERACTION

As generative AI, digital twins, avatars, personalized agents, XR, spatial computing, and multimodal sensing converge, identities, roles, bodies, voices, behaviors, and expertise can be captured, reconstructed, embodied, adapted, and negotiated. Immersive systems are no longer only environments in which interaction takes place: they become intelligent spaces in which people meet, embody, and collaborate with representations of humans and AI.

The workshop is organized around a unifying research question: How should intelligent immersive interfaces represent humans and AI, and how can people understand, control, evaluate, and collaborate with these representations?

MixHAI-XR brings together researchers and practitioners working on human-AI interaction, XR, embodied agents, mixed identities, digital human representations, human factors, ethics, accessibility, design, and evaluation.

TWO PERSPECTIVES:
A CONTINUUM OF REPRESENTATIONS, EXPERIENCED IN XR

The workshop first establishes a shared continuum of technology-mediated human representation and then applies it to XR.

1 · The continuum
Technology-mediated human representation

AI can capture, reconstruct, and animate a person’s appearance, voice, behavior, and expertise. The resulting representations span a continuum: from realistic replicas and human digital twins of one person to agents that combine traits of different people.

Along the continuum, three questions recur:

• Who controls a representation?
• What is modelled, and what is omitted?
• Who is accountable for its actions?

2. Extended Reality
XR as a central interaction paradigm

XR lets people meet, embody, and collaborate with digital humans and AI agents in shared space. Spatial computing and multimodal sensing make gaze, gesture, voice, and presence part of the interaction, and part of the representation.

In the afternoon, the workshop applies the continuum to XR through:

• Demos of XR prototypes and systems
• Applied breakouts on XR scenarios
• A framework linking the continuum to XR interaction and evaluation

XR is the workshop’s main lens, not the boundary of its scope: contributions on non-immersive representations are also welcome.

TOPICS OF INTEREST
FOUR THEMES FOR CONTRIBUTIONS

Contributions may address any point on the continuum, in XR or beyond. Submissions need not fit a single theme, and closely related topics are welcome.

1. The continuum of technology-mediated human representation
Realistic replicas, human digital twins, digital clones, avatars, personalized agents, expert representations, and composite agents that combine traits of different people, including 3D capture, voice synthesis, and identity fidelity.

2. Agency, control, and responsible augmentation
Who controls a representation, what is modelled or omitted, and who is accountable for its actions: perceived control, explainability, consent, authorship, provenance, and attribution, as well as overreliance, offloading, manipulation, and privacy.

3. Embodied and multimodal interaction in XR
Immersive interaction with digital humans, LLMs, conversational agents, decision-support tools, and adaptive services, including speech, gesture, gaze, haptics, spatial cues, and physiological sensing.

4. Evaluation, collaboration, and application domains
Cognitive load, trust, acceptance, accessibility, and social acceptability in single- and multi-user XR, studied in areas such as healthcare, education, industrial training, and cultural heritage.

IMPORTANT DATES

Full Paper Submission Deadline: November 9, 2026
Full Paper Acceptance Notification: December 7, 2026
Camera-ready Deadline: December 21, 2026

SUBMISSION AND DECISIONS

We invite researchers, designers, engineers, and practitioners working on technology-mediated human representation, from human digital twins and avatars to personalized and composite agents, and on how people interact with these representations in XR and beyond, including embodied AI, mixed identities, and responsible human-AI interaction.

Submissions may include empirical studies, conceptual frameworks, position papers, design methods, prototypes, system descriptions, evaluation approaches, and domain-specific applications. Authors are encouraged to submit work that opens discussion, identifies challenges, or proposes new ways to connect interaction design with technology-mediated representation, for example by locating a representation on the continuum or examining how it is experienced in XR.

Paper format:

Authors should prepare a Regular or Short paper. Regular papers are at least 10 “standard” pages and short papers at least 5 pages (5-9 “standard” pages without references). Authors must use the new CEURART style format (https://ceur-ws.org/HOWTOSUBMIT.html#CEURART). Papers should clearly indicate the originality of the contribution, relevance to the workshop themes, and potential impact.

Review process:

All submissions will be peer-reviewed by the workshop program committee. Acceptance will be based on relevance, quality, originality, clarity, and potential to stimulate discussion. Authors of accepted full papers must submit the final paper version according to the deadline, register for the workshop, and attend to present their papers.

Proceedings:

Accepted workshop papers are expected to be included in the joint IUI 2027 workshop proceedings published at CEUR-WS.org

ORGANIZERS

• Jan Henry Belz — Porsche AG
• Giuseppe Caggianese — National Research Council of Italy, CNR-ICAR
• Marta Mondellini — National Research Council of Italy, CNR-STIIMA
• Nicola Capece — University of Basilicata
• Mario Covarrubias — Politecnico di Milano
• Mark McGill — University of Glasgow
• Clara Sayffaerth — LMU Munich
• Johanna Kuch — University of Augsburg
• Jonas Keppel — University of Duisburg-Essen
• Alischa Leona Förster — Saarland University of Applied Sciences (htw saar)
• Qing Li — University of Technology Sydney
• Florian Müller — TU Darmstadt
• Katie Seaborn — University of Cambridge
• Maximilian Altmeyer — Saarland University of Applied Sciences (htw saar)

More information can be found here: https://mixhai.icar.cnr.it/#cfp