{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2026:4IX73U4UHF62MKT7H5V4JACSMG","short_pith_number":"pith:4IX73U4U","schema_version":"1.0","canonical_sha256":"e22ffdd394397da62a7f3f6bc4805261a6fe95a32b9f14850b255d524281e9df","source":{"kind":"arxiv","id":"2606.28566","version":1},"attestation_state":"computed","paper":{"title":"R$^2$-Searcher: Calibrating Retrieval and Reasoning Boundaries for Agentic Search","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.IR","authors_text":"Junyi Li, Maolin Wang, Sheng Zhang, Wenlin Zhang, Xiangyu Zhao, Xiaowei Qian, Yichao Wang, Yingyi Zhang, Yong Liu","submitted_at":"2026-06-26T19:44:34Z","abstract_excerpt":"Recent search agents for multi-hop reasoning often fail by either retrieving incomplete evidence or reasoning over irrelevant portions of the retrieved content, leading to a retrieval-reasoning boundary shift. We propose R$^2$-Searcher, a novel framework that explicitly explores and calibrates the retrieval and reasoning boundaries via fine-grained, query-token-guided evidence modeling and post-retrieval reflection. Specifically, R$^2$-Searcher: (1) constructs fine-grained reasoning contexts by extracting precise facts from retrieved content based on query token semantics (e.g., subjects, acti"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"2606.28566","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IR","submitted_at":"2026-06-26T19:44:34Z","cross_cats_sorted":[],"title_canon_sha256":"2ca3481d2a5ec7a4c0797c489929cbe46d4ce82bf4a022bdb431785ee80aa80c","abstract_canon_sha256":"a6fa2a3b5e474fd84c59da43c161f1921b9fce99d10012f6606714ab5b44d6be"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-06-30T00:15:19.053818Z","signature_b64":"N+VwUr9NtqsAlSU1A+BxXBy9/wManhPdXH0NM4mp7FqMwO9Jw7Dv6/t2K0QMu1fjv+NjE+k8TQbgIVjebPgFCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e22ffdd394397da62a7f3f6bc4805261a6fe95a32b9f14850b255d524281e9df","last_reissued_at":"2026-06-30T00:15:19.053436Z","signature_status":"signed_v1","first_computed_at":"2026-06-30T00:15:19.053436Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"R$^2$-Searcher: Calibrating Retrieval and Reasoning Boundaries for Agentic Search","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.IR","authors_text":"Junyi Li, Maolin Wang, Sheng Zhang, Wenlin Zhang, Xiangyu Zhao, Xiaowei Qian, Yichao Wang, Yingyi Zhang, Yong Liu","submitted_at":"2026-06-26T19:44:34Z","abstract_excerpt":"Recent search agents for multi-hop reasoning often fail by either retrieving incomplete evidence or reasoning over irrelevant portions of the retrieved content, leading to a retrieval-reasoning boundary shift. We propose R$^2$-Searcher, a novel framework that explicitly explores and calibrates the retrieval and reasoning boundaries via fine-grained, query-token-guided evidence modeling and post-retrieval reflection. Specifically, R$^2$-Searcher: (1) constructs fine-grained reasoning contexts by extracting precise facts from retrieved content based on query token semantics (e.g., subjects, acti"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.28566","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2606.28566/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"aliases":[{"alias_kind":"arxiv","alias_value":"2606.28566","created_at":"2026-06-30T00:15:19.053490+00:00"},{"alias_kind":"arxiv_version","alias_value":"2606.28566v1","created_at":"2026-06-30T00:15:19.053490+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.28566","created_at":"2026-06-30T00:15:19.053490+00:00"},{"alias_kind":"pith_short_12","alias_value":"4IX73U4UHF62","created_at":"2026-06-30T00:15:19.053490+00:00"},{"alias_kind":"pith_short_16","alias_value":"4IX73U4UHF62MKT7","created_at":"2026-06-30T00:15:19.053490+00:00"},{"alias_kind":"pith_short_8","alias_value":"4IX73U4U","created_at":"2026-06-30T00:15:19.053490+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/4IX73U4UHF62MKT7H5V4JACSMG","json":"https://pith.science/pith/4IX73U4UHF62MKT7H5V4JACSMG.json","graph_json":"https://pith.science/api/pith-number/4IX73U4UHF62MKT7H5V4JACSMG/graph.json","events_json":"https://pith.science/api/pith-number/4IX73U4UHF62MKT7H5V4JACSMG/events.json","paper":"https://pith.science/paper/4IX73U4U"},"agent_actions":{"view_html":"https://pith.science/pith/4IX73U4UHF62MKT7H5V4JACSMG","download_json":"https://pith.science/pith/4IX73U4UHF62MKT7H5V4JACSMG.json","view_paper":"https://pith.science/paper/4IX73U4U","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2606.28566&json=true","fetch_graph":"https://pith.science/api/pith-number/4IX73U4UHF62MKT7H5V4JACSMG/graph.json","fetch_events":"https://pith.science/api/pith-number/4IX73U4UHF62MKT7H5V4JACSMG/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/4IX73U4UHF62MKT7H5V4JACSMG/action/timestamp_anchor","attest_storage":"https://pith.science/pith/4IX73U4UHF62MKT7H5V4JACSMG/action/storage_attestation","attest_author":"https://pith.science/pith/4IX73U4UHF62MKT7H5V4JACSMG/action/author_attestation","sign_citation":"https://pith.science/pith/4IX73U4UHF62MKT7H5V4JACSMG/action/citation_signature","submit_replication":"https://pith.science/pith/4IX73U4UHF62MKT7H5V4JACSMG/action/replication_record"}},"created_at":"2026-06-30T00:15:19.053490+00:00","updated_at":"2026-06-30T00:15:19.053490+00:00"}