Demystifying Deep Search: A Holistic Evaluation with Hint-free Multi-Hop Questions and Factorised Metrics - Song, Maojia; Renhang, Liu; Wang, Xinyu; Jiang, Yong; Xie, Pengjun; Huang, Fei; Poria, Soujanya; Zhou, Jingren (International Conference on Learning Representations, 2026)