Compass-Embedding v4: Robust Contrastive Learning for Multilingual E-commerce Embeddings. - Pakorn Ueareeworakul; Shuman Liu; Jinghao Feng; Ling Hu; Zhantang Shi; Chengqi Sun; Liang Yao; Panyi Ouyang; Haibo Zhang; Anxiang Zeng (CoRR, 2026)