Yiqun Sun

Researcher at the Magellan Technology Research Institute; the NEWSCOPE work was done while at the National University of Singapore.

Known For

Uncovering the Bigger Picture - Comprehensive Event Understanding via Diverse News Retrieval (EMNLP 2025), co-author — the three interpretable diversity metrics (Average Pairwise Distance, Positive Cluster Coverage, Information Density Ratio) and the two paragraph-level benchmarks released with them
Diversity-Aware k-Maximum Inner Product Search Revisited (arXiv 2024; VLDB Journal 2026), co-author — DkMIPS, MMR-style diversity built into Maximum Inner Product Search; first author of its news demo, DiversiNews (PVLDB 2024), which released the NewsSpectrum corpus