Chin Tseng

Chin Tseng

PhD in Computer Science·University of North Carolina at Chapel Hill

I study how people perceive, reason about, and make decisions with data — and build the tools that put those findings to work.

HCI · Data Visualization · Human Perception · User Research · Information Design

Download CVGet in TouchOn the Job Market

Try CatPAL, a palette automation tool I built — feedback welcome.

About

A little more detail

I'm Chin Tseng. I completed my Ph.D. in Computer Science at the University of North Carolina at Chapel Hill in May 2026, advised by Prof. Danielle Szafir. I'm an HCI researcher focused on human-centered design, and at the core of my work is one question: how do people perceive, reason about, and make decisions with information — and how can we design interfaces and tools that fit how human perception and cognition actually work? My approach is empirical and quantitative — I design controlled experiments, run them at scale, test hypotheses with rigorous statistical analysis, and translate the results into predictive models, actionable design guidelines, and interactive tools. Visualization has been my main proving ground — studying how encodings like color and shape affect what people can accurately see and conclude — but the methods and questions are general HCI, applicable wherever an interface meets a human. Over my Ph.D., I've carried this work end to end — framing the research question, designing the study, analyzing the data, building the model, and shipping the tool that puts the findings to use. That has produced nine papers at CHI, VIS, and EuroVis (one Best Paper, two Honorable Mentions) and data-driven design tools — CatPAW, CatPAL, and Shape It Up — that put empirical findings directly into practitioners' hands. I care most about the last mile: research earns its keep when it changes what designers, analysts, and tools can actually do. Right now, I'm working on AI in two directions: integrating LLMs into web-based interactive tools, so people can explore them in a natural, high-level way; and bringing AI into the research process itself — supporting user studies and modeling their results — to cut the time and scale costs of running experiments. Both share one aim: keeping research empirically grounded and human-centered even as AI takes on more of the work. Before my Ph.D., I earned my M.S. in Computer Science from NYU and my B.S. from National Tsing Hua University in Taiwan, with an exchange year at TU Dresden. I also enjoy building interactive systems and tools in practice, having worked as a research intern at Epsilon and as a software engineer in industry. A few things that show up in everything I do: I love building, I'm endlessly curious about why people behave the way they do, and I find real joy in digging into mechanisms — what causes what, what predicts what. My favorite part of the work is the back-and-forth between empirical rigor and creative tool-building, and getting them to feed each other.

Publications

Recent work

View all 9
2026·In Proceedings of IEEE VIS 2026; published in IEEE Transactions on Visualization and Computer Graphics

CatPAL: Task-Aware Learning for Categorical Palette Recommendation

Chin Tseng, Arran Zeyu Wang, Yunqi Li, Danielle Albers Szafir

This paper shows that categorical palette effectiveness is task-dependent: color and shape palettes differ in robustness across seven common scatterplot tasks. We estimate task-specific perceptual strengths for 39 colors and 39 shapes using Bradley-Terry models refined by adaptive sampling, and quantify cross-channel interactions with a redundant gain (ΔG) metric. These models drive CatPAL, a task-aware recommendation system that ranks palettes by task, category count, and user-specified color or shape constraints.

2026·In Proceedings of ACM CHI’ 2026: ACM Conference on Human Factors in Computing Systems

Redundant Is Not Redundant: Automating Efficient Categorical Palettes Design Unifying Color & Shape Encodings with CatPAW

Chin Tseng, Arran Zeyu Wang, Ghulam Jilani Quadri, Danielle Albers Szafir

🏆 Best Paper Honorable Mention

This paper systematically evaluates redundant color–shape encodings in multi-class scatterplots and shows that redundancy is not universally beneficial. Instead, its effectiveness depends on category count and specific color–shape pairings, with the strongest benefits appearing at moderate category numbers. We operationalize these findings in CatPAW, an interactive tool that generates empirically optimized categorical palettes under user-defined constraints.

2025·In Proceedings of ACM CHI’ 2025: ACM Conference on Human Factors in Computing Systems

Uncovering How Scatterplot Features Skew Visual Class Separation

Chin Tseng*, S. Sandra Bae*, Takanori Fujiwara*, Danielle Albers Szafir (*equally contributed)

This work investigates how data and scatterplot features influence people’s perception of visual class separation. By analyzing human judgments across thousands of real-world scatterplots and dozens of quantitative features, we identify which factors most strongly affect perceived separability. The paper also introduces a composite feature model that better aligns with human perception than existing visual class separation metrics.