{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2026:UISWY3B6TSAARTGSFNQRUEXGLY","short_pith_number":"pith:UISWY3B6","schema_version":"1.0","canonical_sha256":"a2256c6c3e9c8008ccd22b611a12e65e3ca3b71cb65030c7645db55339c46e8e","source":{"kind":"arxiv","id":"2605.27105","version":1},"attestation_state":"computed","paper":{"title":"Lost in the Evidence? Reproducing Document Position and Context Size Effects in RAG","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","headline":"","cross_cats":[],"primary_cat":"cs.IR","authors_text":"Anxo Perez, Javier Parapar, Jorge Gab\\'in","submitted_at":"2026-05-26T14:44:19Z","abstract_excerpt":"Retrieval-Augmented Generation (RAG) systems rely on retrieved documents being concatenated into a model's input context, making both document ordering and context size critical yet controversial design choices. Prior work reports position-based effects such as lost in the middle and related long-context phenomena. However, empirical findings remain inconsistent and hard to reproduce across models, datasets, and evaluation protocols. In this paper, we present a systematic reproducibility study that revisits these claims and examines how they evolve with contemporary LLMs under a controlled eva"},"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":"2605.27105","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"cs.IR","submitted_at":"2026-05-26T14:44:19Z","cross_cats_sorted":[],"title_canon_sha256":"284f3b93b7298f01606e7a6bc71f1ccfb567ffb3a013119c09d11434efd63c00","abstract_canon_sha256":"32c219c734c7f08f4e3c4d7be83e0b68033b9dfc065bc2ab53f9cd28be76057d"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-27T02:05:42.070689Z","signature_b64":"v4cGX/a/8KXUtGChciB6GOkeCxTyzR0KnRWwMzZBhQzRduGwg5o85kv3anhO1mheymm23XTa+aDO6jXDKbnBBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a2256c6c3e9c8008ccd22b611a12e65e3ca3b71cb65030c7645db55339c46e8e","last_reissued_at":"2026-05-27T02:05:42.069915Z","signature_status":"signed_v1","first_computed_at":"2026-05-27T02:05:42.069915Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Lost in the Evidence? Reproducing Document Position and Context Size Effects in RAG","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","headline":"","cross_cats":[],"primary_cat":"cs.IR","authors_text":"Anxo Perez, Javier Parapar, Jorge Gab\\'in","submitted_at":"2026-05-26T14:44:19Z","abstract_excerpt":"Retrieval-Augmented Generation (RAG) systems rely on retrieved documents being concatenated into a model's input context, making both document ordering and context size critical yet controversial design choices. Prior work reports position-based effects such as lost in the middle and related long-context phenomena. However, empirical findings remain inconsistent and hard to reproduce across models, datasets, and evaluation protocols. In this paper, we present a systematic reproducibility study that revisits these claims and examines how they evolve with contemporary LLMs under a controlled eva"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2605.27105","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/2605.27105/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":"2605.27105","created_at":"2026-05-27T02:05:42.070049+00:00"},{"alias_kind":"arxiv_version","alias_value":"2605.27105v1","created_at":"2026-05-27T02:05:42.070049+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2605.27105","created_at":"2026-05-27T02:05:42.070049+00:00"},{"alias_kind":"pith_short_12","alias_value":"UISWY3B6TSAA","created_at":"2026-05-27T02:05:42.070049+00:00"},{"alias_kind":"pith_short_16","alias_value":"UISWY3B6TSAARTGS","created_at":"2026-05-27T02:05:42.070049+00:00"},{"alias_kind":"pith_short_8","alias_value":"UISWY3B6","created_at":"2026-05-27T02:05:42.070049+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/UISWY3B6TSAARTGSFNQRUEXGLY","json":"https://pith.science/pith/UISWY3B6TSAARTGSFNQRUEXGLY.json","graph_json":"https://pith.science/api/pith-number/UISWY3B6TSAARTGSFNQRUEXGLY/graph.json","events_json":"https://pith.science/api/pith-number/UISWY3B6TSAARTGSFNQRUEXGLY/events.json","paper":"https://pith.science/paper/UISWY3B6"},"agent_actions":{"view_html":"https://pith.science/pith/UISWY3B6TSAARTGSFNQRUEXGLY","download_json":"https://pith.science/pith/UISWY3B6TSAARTGSFNQRUEXGLY.json","view_paper":"https://pith.science/paper/UISWY3B6","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2605.27105&json=true","fetch_graph":"https://pith.science/api/pith-number/UISWY3B6TSAARTGSFNQRUEXGLY/graph.json","fetch_events":"https://pith.science/api/pith-number/UISWY3B6TSAARTGSFNQRUEXGLY/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/UISWY3B6TSAARTGSFNQRUEXGLY/action/timestamp_anchor","attest_storage":"https://pith.science/pith/UISWY3B6TSAARTGSFNQRUEXGLY/action/storage_attestation","attest_author":"https://pith.science/pith/UISWY3B6TSAARTGSFNQRUEXGLY/action/author_attestation","sign_citation":"https://pith.science/pith/UISWY3B6TSAARTGSFNQRUEXGLY/action/citation_signature","submit_replication":"https://pith.science/pith/UISWY3B6TSAARTGSFNQRUEXGLY/action/replication_record"}},"created_at":"2026-05-27T02:05:42.070049+00:00","updated_at":"2026-05-27T02:05:42.070049+00:00"}