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Traditional text-based RAG often retrieves logically irrelevant pseudo-evidence, while graph-based RAG is frequently hindered by search-time pruning, which may discard potentially valid reasoning paths. Existing hybrid approaches primarily adopt simple evidence concatenation or unidirectional enhancement, which fails to address the fundamental \"Information Island\" problem caused by asymmetric reasoning flows between unstructured text and structured graphs. We propose \\textbf{TGS-RAG}, a unified framework for \\textbf{T}ext-\\textbf{G}raph \\textbf{S}ynergistic enhancement. TGS-RAG introduces a bidirectional mechanism: (i) a \\textbf{Graph-to-Text} channel that employs a Global Voting strategy from visited graph nodes to re-rank and refine textual evidence, filtering out semantic noise; and (","title":"Text-Graph Synergy: A Bidirectional Verification and Completion Framework for RAG","url":"https://arxiv.org/abs/2605.05643","vendor":"arxiv_cs_ai"},"summary":"arXiv:2605.05643v1 Announce Type: new \nAbstract: Retrieval-Augmented Generation (RAG) has become a core paradigm for enhancing factual grounding and multi-hop reasoning in Large Language Models (LLMs). Traditional text-based RAG often retrieves logically irrelevant pseudo-evidence, while graph-based RAG is frequently hindered by search-time pruning, which may discard potentially valid reasoning paths. Existing hybrid approaches primarily adopt simple evidence concatenation or unidirectional enhancement, which fails to address the fundamental \"Information Island\" problem caused by asymmetric reasoning flows between unstructured text and structured graphs. We propose \\textbf{TGS-RAG}, a unified framework for \\textbf{T}ext-\\textbf{G}raph \\textbf{S}ynergistic enhancement. TGS-RAG introduces a bidirectional mechanism: (i) a \\textbf{Graph-to-Text} channel that employs a Global Voting strategy from visited graph nodes to re-rank and refine textual evidence, filtering out semantic noise; and (","title":"Text-Graph Synergy: A Bidirectional Verification and Completion Framework for RAG","vendor":"arxiv_cs_ai"},"confidence":{"method":"deterministic"},"decision":"POSITIVE","issued_at":"2026-05-08T04:43:40Z","notes":"Spider vendor_press (news) news.vendor_press.v1","object":{"captured_by":"crovia.spider.vendor_press","primary_source_url":"https://arxiv.org/abs/2605.05643"},"predecessors":[],"schema":"crovia.axiom.v1","signature":"ed25519:c2348cbacd5d5d232d746eff534155c0e8523d5d4f482b72b27c9a6d35d6dfeeb6cdecc09f00d872a49edb87d8dcf68fe4bc998dec2fca2ed6cdb1d04f251904","signer":"crovia.substrate","subject":{"observed_at":"2026-05-08T04:43:40Z","source_collector":"spider:vendor_press","target_id":"https://arxiv.org/abs/2605.05643"},"tsa":{"authority":"crovia.substrate.bootstrap","rfc3161_token":"{\"kind\":\"crovia.bootstrap.tsa\",\"source_jsonl\":\"/opt/crovia/spider/data/news/vendor_press_v1.jsonl\",\"source_seal_merkle_root\":\"spider_vendor_press_v1\",\"upgrade_path\":\"Sessione H \\u2014 OpenTimestamps weekly anchor\"}"},"zk_mode":"clear","zk_proof":null},"ledger":{"leaf_hash":"324ad85375d162fda0238d55ee0fe9947a0d03c3d004cc772117f40e8532b6d9","leaf_index":120032,"ledger_path":"/opt/crovia/substrate/axiom_ledger.jsonl"},"merkle_proof":{"hash_alg":"sha256","leaf_prefix":"0x00","node_prefix":"0x01","odd_leaf_rule":"duplicate_last","path":[{"sibling":"bce081e54f29aa0eb9d44fbbff19bb141b2fda6a13ea8a7d40ce8ba0bb15735b","side":"right"},{"sibling":"eb10ae26e592129013905dd26700762e282b193815152d6aa9a17f7b42414d57","side":"right"},{"sibling":"ef454e9e4266d609d8533fdf3a1eebc905d0026b732d3ac591d2412430fa0006","side":"right"},{"sibling":"5d3d8bbf4716f00c2935c686a60ea041e6df709e2422a152c7bcf5c35bdd1a67","side":"right"},{"sibling":"90b8daac3dfba410763a4cc199509d7681e083d7f9e4190396a13a6d57da57fd","side":"right"},{"sibling":"b52ab1c78b3a332cf4d618db5f2585af71637ce32e4ae742af22344a92040126","side":"left"},{"sibling":"57401aa2f23d4c46f6ada2619e17a96246110ca4ac3b15593bdfdf239f901b96","side":"left"},{"sibling":"e25b57343e8490d87d450c3272d0745f8d63398c5695aa0427d60d9bacf7e2e4","side":"left"},{"sibling":"7a808b3ae03c4407bca39d0ca95237ecc77e10bf4a62672fcc1bdbe9f225cf04","side":"right"},{"sibling":"b9834433f5bd1deeaab4ced2b3bcc0d91d19763a5d0981fb299d124b63459eb3","side":"right"},{"sibling":"143f33d3924b3840fd6dd8ba12566fc35bf86189e663ef0ad4884d676f295e3a","side":"left"},{"sibling":"b1ed99341c327c7c9ab2489f40af2547ab3b3b4b6a74fb684210164fb891a413","side":"right"},{"sibling":"6ee3be9bdfc9bee55d32f7dbb0075f02fe87d20887d563d3e300caf36b1b88c7","side":"left"},{"sibling":"8ccd9937a2c0d5c04044d07d1557791b7d07bb31eac41a39a675608d44b38f23","side":"right"},{"sibling":"3a5e69cf0803f4c91f3895ed7c9a95748fef240bec4422e167c05300f79f06c0","side":"left"},{"sibling":"f2817ab288b5324fe49770372c7a10f33f7cd11005f8d4c0a730316f5229dc98","side":"left"},{"sibling":"725fac972e772ca0dc598810ea1abc70df472f72d2d6ab8a0baee2b80e5d2f4c","side":"left"},{"sibling":"98fc57dfef8873b512edc8340f7181df57302bb96777625e072235c62d7c5895","side":"right"}]},"schema":"crovia.axiom_proof.v1","seal":{"first_collector_run_id":"","first_receipt_hash":"","jsonl_path":"/opt/crovia/substrate/axiom_ledger.jsonl","key_id":"430895f101d38164","last_collector_run_id":"","last_receipt_hash":"","leaf_count":134292,"merkle_root":"77fc9c28fae777b81da5b495b3115474df6592dfac590333213d3bdf8b94a9b3","public_key_hex":"cf742e26f75669dc673cb5c0786a1ae23ae8ca19c347317192ce40c28a7ff25c","run_id":"hourly_json_retrofit_20260515T023701Z","schema":"crovia.seal.v1","seal_family_version":"crovia-seal-family/1","seal_kind":"substrate_batch","sealed_at":"2026-05-15T02:37:25Z","sig_algorithm":"ed25519","signature":"68107a834b00b24f5d4501e5ec727445311f132a486567ecc4c72a4e6dff24c8c21f2de3105293353ba5fdbe370d032819af6aa70f694e2e39b6af6737507009","signer_version":"1.1.0"},"trust_root":{"key_id":"430895f101d38164","public_key_hex":"cf742e26f75669dc673cb5c0786a1ae23ae8ca19c347317192ce40c28a7ff25c","signature_algorithm":"ed25519","url":"/registry/canon/TRUST_ROOT.md"},"verifier":{"spec":"/registry/canon/AXIOM_RECEIPT_v1.md","url":"/v/axm_a4069b65e8334b1f72fc97070dbdd544070c6d403078f1a2765a2d053c4d5955"}}