MemSifter: Offloading LLM Memory Retrieval via Outcome-Driven Proxy Reasoning

Collection of recent arXiv papers (Mar 2026) focused on improvements to LLM long-term memory, retrieval-augmented generation (RAG), multi-round agentic reasoning, and industrial recommender/ranking systems. Key contributions include MemSifter (offloads memory retrieval to a small proxy model with RL training; code/weights released), AriadneMem and PlugMem (structured memory systems/graphs to enable efficient long-horizon agent memory), MA-RAG (multi-round agentic RAG for higher-fidelity medical reasoning; code released), and several industrial-scale ranking/recommendation advances (SORT, HAP,