Agentic Context Engineering: Evolving Contexts for Self-Improving Language Models - Zhang, Qizheng; Hu, Changran; Upasani, Shubhangi; Ma, Boyuan; Hong, Fenglu; Kamanuru, Vamsidhar; Rainton, Jay; Wu, Chen; Ji, Mengmeng; Li, Hanchen; Thakker, Urmish; Zou, James Y; et al. (International Conference on Learning Representations, 2026)