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Matthew Ward

Publications and source records attributed to Matthew Ward.

4 recordsLinked to original sources
arXiv2026

Vibe Visualizing: How Visualization Novices Try (and Fail) to Generate and Interpret Visualizations with Conversational AI

Conversational AI has enabled users to generate and interpret visualizations through natural language, significantly lowering the technical barrier to entry. The increased accessibility brings visualization novices into data visualization, but also exposes them to misinformation and misinterpretations. We are motivated to examine what issues can arise in interactions with current conversational AI, whether visualization novices can recognize such issues, and how they respond to them. To examine these questions, we conducted a user study on ChatGPT with 20 visualization novices, collecting their conversation logs, semi-structured interview transcripts, and Likert-scale questionnaire responses. Through thematic analysis, we developed a codebook that covers AI execution compliance, issues of AI-generated visualizations, patterns of AI responses, and prompting patterns of users. We summarized four themes, including the quality of outcomes, recurring errors from ChatGPT, misuse by users, factors that affect user trust, confidence, and verification behavior, and human-AI collaboration dynamics. To demonstrate the generalizability of our codebook and findings, we replayed the initial user prompts on Gemini and Claude and compared the outcomes, which revealed distinct failure modes for each model. Based on the results of all analyses, we derive a set of design recommendations for future AI-assisted visualization systems. We conclude with discussions on literacy gaps, diverse human-AI collaboration dynamics, and implications for agentic visualization.

cs.HC↗
arXiv2023

Running anomalous dimensions in holographic QCD: from the proton to the sexaquark

In holographic models of QCD, the running of the anomalous dimension of the quark bilinear operator leads to chiral symmetry breaking when gamma=1 and the Breitenlohner-Freedman bound is violated. In that case, the running drives the sigma meson mass tachyonic inducing the chiral symmetry breaking. Here we include the running anomalous dimension in the computation of the spectrum of bound states associated with other operators made of light quarks, such as the nucleon and exotic sexaquark states. We show that including the one loop gauge theory running can have substantial effects on the predictions. For example, the nucleon mass to rho mass ratio is improved and lies much closer to the observed value. A similar result is obtained for the Lambda and Xi baryons when strange quarks are included. A uuddss sexaquark state with a low enough mass to make it stable can be achieved, but this depends on the input assumptions about the running dimension.

hep-ph↗
arXiv2014

Derived categories of torsors for abelian schemes

In the first part of our paper, we show that there exist non-isomorphic derived equivalent genus $1$ curves, and correspondingly there exist non-isomorphic moduli spaces of stable vector bundles on genus $1$ curves in general. Neither occurs over an algebraically closed field. We give necessary and sufficient conditions for two genus $1$ curves to be derived equivalent, and we go on to study when two principal homogeneous spaces for an abelian variety have equivalent derived categories. We apply our results to study twisted derived equivalences of the form $D^b(J,\alpha)\simeq D^b(J,\beta)$, when $J$ is an elliptic fibration, giving a partial answer to a question of C\u{a}ld\u{a}raru.

math.AG↗