3 papers
cs.CL2026
Document Topic Alignment Metrics for Evaluating Topic Models of Short-Text Public Health Communications on Social Media
Wangjiaxuan Xin, Shuhua Yin, Yaorong Ge +1
Topic models are widely used to analyze public health-related social media short texts, yet their evaluation remains dominated by metrics that focus entirely on generated topics al…
math.NA2025
Toward Practical Forecasts of Public Sentiments via Convexification for Mean Field Games: Evidence from Real World COVID-19 Discussion Data
Shi Chen, Michael V. Klibanov, Kevin McGoff +3
We apply a convexification-based numerical method to forecast public sentiment dynamics using Mean Field Games (MFGs). The theoretical foundation for the convexification approach,…
cs.CL2025
Improving Topic Modeling of Social Media Short Texts with Rephrasing: A Case Study of COVID-19 Related Tweets
Wangjiaxuan Xin, Shuhua Yin, Shi Chen +1
Social media platforms such as Twitter (now X) provide rich data for analyzing public discourse, especially during crises such as the COVID-19 pandemic. However, the brevity, infor…