Zero-Shot Image Moderation in Google Ads with LLM-Assisted Textual Descriptions and Cross-modal Co-embeddings. - Enming Luo; Wei Qiao; Katie Warren; Jingxiang Li; Eric Xiao; Krishna Viswanathan; Yuan Wang 049; Yintao Liu; Jimin Li; Ariel Fuxman (WSDM, 2025)