Benchmark Datasets for Lead-Lag Forecasting on Social Platforms. - Kimia Kazemian; Zhenzhen Liu; Yangfanyu Yang; Katie Z. Luo; Shuhan Gu; Audrey Du; Xinyu Yang; Jack Jansons; Kilian Q. Weinberger; John Thickstun; Yian Yin; Sarah Dean (CoRR, 2025)