Heng Zhang Yihao Zhong Lubin Gan Zhihe Chen Jiajun Wu Yuling Shi Xiaodong Gu 0002 Hao Zhang Haochen You Jin Huang 0007 EvoHyper: Evolving Hypergraph Topologies for Unified Collaboration in Multi-Agent Communication. 25130-25143 2026 ACL (Findings) https://doi.org/10.18653/v1/2026.findings-acl.1258 https://aclanthology.org/2026.findings-acl.1258/ conf/acl/2026f db/conf/acl/acl2026f.html#ZhangZGCWSGZYH26