Justin Matejka

schoolAutodeskbar_chart#693 Global Rank

Total Papers

HCI Rank

#693

Research Areas

Years Active

Recent Publications

Lost in Translation: The Value of Verbalizations in Interpreting 3D Computer-Aided Design Workflows

AI assistants are transforming creative and knowledge domains, holding similar promise for mechanical design via 3D CAD software. Yet, current AI assistance for CAD relies on geometry or command history, lacking rich design intent. We investigate think-aloud computing as a lightweight approach to capture designers' sp…

CHI '26CorrespondingHuman-LLM Collaboration +2

PointAloud: An Interaction Suite for AI-Supported Pointer-Centric Think-Aloud Computing

Think-Aloud Computing, a method for capturing users’ verbalized thoughts during software tasks, allows eliciting rich contextual insights into evolving intentions, struggles, and decision-making processes of users in real-time. However, existing approaches face practical challenges: users often lack awareness of what…

CHI '25CorrespondingGenerative AI (Text, Image, Music, Video) +1

To Use or Not to Use: Impatience and Overreliance When Using Generative AI Productivity Support Tools

Generative AI has the potential to assist people with completing various tasks, but increased productivity is not guaranteed due to challenges such as uncertainty in output quality and unclear processing time. Through an online crowdsourced experiment (N=508), leveraging a “paint by numbers” task to simulate propertie…

CHI '24CorrespondingHuman-LLM Collaboration +1

AQuA: Automated Question-Answering in Software Tutorial Videos with Visual Anchors

Tutorial videos are a popular help source for learning feature-rich software. However, getting quick answers to questions about tutorial videos is difficult. We present an automated approach for responding to tutorial questions. By analyzing 633 questions found in 5,944 video comments, we identified different question…

DIS '23CorrespondingGenerative AI (Text, Image, Music, Video) +1

3DALL-E: Integrating Text-to-Image AI in 3D Design Workflows

Text-to-image AI are capable of generating novel images for inspiration, but their applications for 3D design workflows and how designers can build 3D models using AI-provided inspiration have not yet been explored. To investigate this, we integrated DALL-E, GPT-3, and CLIP within a CAD software in 3DALL-E, a plugin t…

CHI '224th AuthorHuman Pose & Activity Recognition +2

AvatAR: An Immersive Analysis Environment for Human Motion Data Combining Interactive 3D Avatars and Trajectories

Analysis of human motion data can reveal valuable insights about the utilization of space and interaction of humans with their environment. To support this, we present AvatAR, an immersive analysis environment for the in-situ visualization of human motion data, that combines 3D trajectories, virtual avatars of people’…

CHI '22CorrespondingHead-Up Display (HUD) & Advanced Driver Assistance Systems (ADAS) +3

Supercharging Trial-and-Error for Learning Complex Software Applications

Despite an abundance of carefully-crafted tutorials, trial-and-error remains many people’s preferred way to learn complex software. Yet, approaches to facilitate trial-and-error (such as tooltips) have evolved very little since the 1980s. While existing mechanisms work well for simple software, they scale poorly to la…

CHI '213rd AuthorKnowledge Worker Tools & Workflows +1

Think-Aloud Computing: Supporting Rich and Low-Effort Knowledge Capture

When users complete tasks on the computer, the knowledge they leverage and their intent is often lost because it is tedious or challenging to capture. This makes it harder to understand why a colleague designed a component a certain way or to remember requirements for software you wrote a year ago. We introduce think-…

CHI '202nd AuthorCollaborative Learning & Peer Teaching +1

MicroMentor: Peer-to-Peer Software Help Sessions in Three Minutes or Less

While synchronous one-on-one help for software learning is rich and valuable, it can be difficult to find and connect with someone who can provide assistance. Through a formative user study, we explore the idea of fixed-duration, one-on-one help sessions and find that 3 minutes is often enough time for novice users to…

CHI '193rd AuthorBest PaperSocial Robot Interaction +1

Geppetto: Enabling Semantic Design of Expressive Robot Behaviors

Expressive robots are useful in many contexts, from industrial to entertainment applications. However, designing expressive robot behaviors requires editing a large number of unintuitive control parameters. We present an interactive, data-driven system that allows editing of these complex parameters in a semantic spac…

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