BMAM: Brain-inspired Multi-Agent Memory Framework

Yang Li, Jiaxiang Liu, Yusong Wang, Yujie Wu, Mingkun Xu


Abstract
Language-model-based agents operating over extended interaction horizons face persistent challenges in preserving temporally grounded information and maintaining behavioral consistency across sessions, a failure mode we term "soul erosion." We present BMAM (Brain-inspired Multi-Agent Memory), a general-purpose memory architecture that models agent memory as a set of functionally specialized subsystems rather than a single unstructured store. Inspired by cognitive memory systems, BMAM decomposes memory into episodic, semantic, salience-aware, and control-oriented components that operate at complementary time scales, organised as a six-phase memory lifecycle. To support long-horizon reasoning, BMAM organises episodic memories along explicit timelines and retrieves evidence by fusing multiple complementary signals. Experiments on the LoCoMo benchmark show that BMAM achieves 78.45% accuracy, outperforming seven memory-augmented baselines. Pairwise ablations reveal super-additive synergy between brain-region components rather than redundant stacking, and a Soul Portability Test demonstrates 87.5% identity-integrity across full memory export, clear, and restore. A targeted refinement of the temporal-trigger heuristics raises LongMemEval multi-session accuracy from 45.2% to 56.4%, validating the architectural decomposition behind BMAM.Code is available at https://github.com/innovation64/BMAM.
Anthology ID:
2026.findings-acl.1973
Volume:
Findings of the Association for Computational Linguistics: ACL 2026
Month:
July
Year:
2026
Address:
San Diego, California, United States
Editors:
Maria Liakata, Viviane P. Moreira, Jiajun Zhang, David Jurgens
Venue:
Findings
SIG:
Publisher:
Association for Computational Linguistics
Note:
Pages:
39604–39626
Language:
URL:
https://preview.aclanthology.org/ingest-acl/2026.findings-acl.1973/
DOI:
Bibkey:
Cite (ACL):
Yang Li, Jiaxiang Liu, Yusong Wang, Yujie Wu, and Mingkun Xu. 2026. BMAM: Brain-inspired Multi-Agent Memory Framework. In Findings of the Association for Computational Linguistics: ACL 2026, pages 39604–39626, San Diego, California, United States. Association for Computational Linguistics.
Cite (Informal):
BMAM: Brain-inspired Multi-Agent Memory Framework (Li et al., Findings 2026)
Copy Citation:
PDF:
https://preview.aclanthology.org/ingest-acl/2026.findings-acl.1973.pdf
Checklist:
 2026.findings-acl.1973.checklist.pdf