@article{apexsearcherrefiningcreditassignmentwith,
  title = {APEX-Searcher: Refining Credit Assignment with Subgoaling for Agentic Retrieval-Augmented Generation},
  author = {Kun Chen and Qingchao Kong and Zhao Feifei and Wenji Mao},
  year = {2026},
  eprint = {2603.13853},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2603.13853},
}