{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:TFL5MMMUPSSIRUVDTTZHB2H6KH","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"78764440ce35a7858e8004cbdadf53e0bf81558a36a6ea943c9ba58cc3bff366","cross_cats_sorted":["cs.MA"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CL","submitted_at":"2026-07-25T16:29:38Z","title_canon_sha256":"290cbddc9fe27a5d45feb027559f8be5d8324f84bbb43b44bd1ea4b194340ed2"},"schema_version":"1.0","source":{"id":"2607.23278","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2607.23278","created_at":"2026-07-28T01:22:45Z"},{"alias_kind":"arxiv_version","alias_value":"2607.23278v1","created_at":"2026-07-28T01:22:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2607.23278","created_at":"2026-07-28T01:22:45Z"},{"alias_kind":"pith_short_12","alias_value":"TFL5MMMUPSSI","created_at":"2026-07-28T01:22:45Z"},{"alias_kind":"pith_short_16","alias_value":"TFL5MMMUPSSIRUVD","created_at":"2026-07-28T01:22:45Z"},{"alias_kind":"pith_short_8","alias_value":"TFL5MMMU","created_at":"2026-07-28T01:22:45Z"}],"graph_snapshots":[{"event_id":"sha256:4721287a9ef8f7d851c5dd9be856b2d001553962e1c419dc4f75eb75f3e7dcad","target":"graph","created_at":"2026-07-28T01:22:45Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2607.23278/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Multi-hop question answering requires coordinating relational and textual evidence across reasoning steps, a combination neither a text corpus nor a knowledge graph can supply alone. Prior work often emphasizes only part of this loop: graph-augmented RAG retrieves from a pre-built or query-updated graph, KGQA systems search within topic-centered subgraphs, and memory-augmented agents maintain evolving memories without continuously reconciling graph memory with textual context. We propose Co-E, a training-free system built around synchronized bidirectional graph-text working memory. A synchroni","authors_text":"Hieu Man, Thien Huu Nguyen","cross_cats":["cs.MA"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CL","submitted_at":"2026-07-25T16:29:38Z","title":"Co-Evolving Graph and Text Memory for Training-Free Multi-Hop Question Answering"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.23278","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:9d76f26120ba0c49876f95c1ba831a7eb31b455fc238f637bd9df498cc9de247","target":"record","created_at":"2026-07-28T01:22:45Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"78764440ce35a7858e8004cbdadf53e0bf81558a36a6ea943c9ba58cc3bff366","cross_cats_sorted":["cs.MA"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CL","submitted_at":"2026-07-25T16:29:38Z","title_canon_sha256":"290cbddc9fe27a5d45feb027559f8be5d8324f84bbb43b44bd1ea4b194340ed2"},"schema_version":"1.0","source":{"id":"2607.23278","kind":"arxiv","version":1}},"canonical_sha256":"9957d631947ca488d2a39cf270e8fe51e3d28aa820a60901cca8799cf6250db8","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9957d631947ca488d2a39cf270e8fe51e3d28aa820a60901cca8799cf6250db8","first_computed_at":"2026-07-28T01:22:45.694033Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-28T01:22:45.694033Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"E3NtIXbLoT626ShqCf40qDgCG3b0cIrtyL7idDaWLgv4PLpGizdEZ8/4c+wetwDES7GMruHjEMq4OT5AiQzSAw==","signature_status":"signed_v1","signed_at":"2026-07-28T01:22:45.694857Z","signed_message":"canonical_sha256_bytes"},"source_id":"2607.23278","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9d76f26120ba0c49876f95c1ba831a7eb31b455fc238f637bd9df498cc9de247","sha256:4721287a9ef8f7d851c5dd9be856b2d001553962e1c419dc4f75eb75f3e7dcad"],"state_sha256":"04fa6a045c162983a681bed08799e9ff6f665800b4e5a0944f763567f4f66485"}