5 papers
Less can be More: Relieving RAG Bottlenecks via Evidence Frontloading and Pressure-Adaptive Budgeting
Weibin Cai, Reza Zafarani
Existing methods for improving Retrieval-Augmented Generation (RAG) efficiency mainly optimize downstream LLM generation, such as context compression or serving optimization. Howev…
When Does Demographic Information Help? Data and Modeling Regimes for Perspective-Aware Hate Speech Detection
Weibin Cai, Reza Zafarani
Demographic information is often used to model annotator perspectives in subjective tasks such as hate speech detection, but its benefit is inconsistent: it improves performance in…
Spectral Analysis of Fake News Propagation
Weibin Cai, Reza Zafarani
How can we systematically represent the propagation of information? The propagation structure of fake news has been shown to be an important cue for detecting it; yet, existing pro…
Seeing Hate Differently: Hate Subspace Modeling for Culture-Aware Hate Speech Detection
Weibin Cai, Reza Zafarani
Hate speech detection has been extensively studied, yet existing methods often overlook a real-world complexity: training labels are biased, and interpretations of what is consider…
Unpacking Hateful Memes: Presupposed Context and False Claims
Weibin Cai, Jiayu Li, Reza Zafarani
While memes are often humorous, they are frequently used to disseminate hate, causing serious harm to individuals and society. Current approaches to hateful meme detection mainly r…