ResearchResearch paperLarge Language Models · Reasoning & Planning · Retrieval, RAG & Search1 source · Oct 19, 2026

RESIN: Multi-Chain Reasoning with Entity-Structured Indexing

We introduce RESIN (Reasoning with Entity Structured Indexing), which uses structure to locate evidence while keeping the original source as the basis for reasoning.

Key points

  • Multi-chain reasoning is a challenging task not only because the multi-chain evidence is dispersed, but also because different parts of reasoning may require distinct, interacting chains of support.
  • RESIN decomposes a question into focused one-hop needs, retrieves a small set of source-grounded units for each hop, and places only this relevant evidence in a compact reasoning buffer.
  • On the full HolisQA benchmark, RESIN achieves 82.92 context recall and 76.70 answer relevancy over all questions, with higher reported CR and AR across five domains and higher F1 in four domains than the published baselines.
  • Ablations show that both typed evidence diversity and hop-wise decomposition are essential, supporting a clear conclusion: Precise evidence organization and delayed commitment make multi-chain reasoning effective and auditable.

Sources (1)

  • [1]RESIN: Multi-Chain Reasoning with Entity-Structured Indexing
    arXiv (AI, ML, NLP, CV, robotics, multi-agent) · Oct 19, 05:35 PM
    We introduce RESIN (Reasoning with Entity Structured Indexing), which uses structure to locate evidence while keeping the original source as the basis for reasoning.
    Multi-chain reasoning is a challenging task not only because the multi-chain evidence is dispersed, but also because different parts of reasoning may require distinct, interacting chains of support.

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