{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:Y7AXTEYZETGNO7MROT7DQ6DJMI","short_pith_number":"pith:Y7AXTEYZ","canonical_record":{"source":{"id":"2606.02814","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.IR","submitted_at":"2026-06-01T19:31:28Z","cross_cats_sorted":["cs.AI","cs.CL"],"title_canon_sha256":"4e4537e3fede01ab0041ac31da51580ac764d27ce445bdec04865809d1096d78","abstract_canon_sha256":"b502011b685c2bb8135d28821c95936cc69f611d39c782549ea5fe448156dc19"},"schema_version":"1.0"},"canonical_sha256":"c7c179931924ccd77d9174fe387869623726f5b69d45f1666e3bab8e7a250024","source":{"kind":"arxiv","id":"2606.02814","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.02814","created_at":"2026-06-03T01:05:23Z"},{"alias_kind":"arxiv_version","alias_value":"2606.02814v1","created_at":"2026-06-03T01:05:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.02814","created_at":"2026-06-03T01:05:23Z"},{"alias_kind":"pith_short_12","alias_value":"Y7AXTEYZETGN","created_at":"2026-06-03T01:05:23Z"},{"alias_kind":"pith_short_16","alias_value":"Y7AXTEYZETGNO7MR","created_at":"2026-06-03T01:05:23Z"},{"alias_kind":"pith_short_8","alias_value":"Y7AXTEYZ","created_at":"2026-06-03T01:05:23Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:Y7AXTEYZETGNO7MROT7DQ6DJMI","target":"record","payload":{"canonical_record":{"source":{"id":"2606.02814","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.IR","submitted_at":"2026-06-01T19:31:28Z","cross_cats_sorted":["cs.AI","cs.CL"],"title_canon_sha256":"4e4537e3fede01ab0041ac31da51580ac764d27ce445bdec04865809d1096d78","abstract_canon_sha256":"b502011b685c2bb8135d28821c95936cc69f611d39c782549ea5fe448156dc19"},"schema_version":"1.0"},"canonical_sha256":"c7c179931924ccd77d9174fe387869623726f5b69d45f1666e3bab8e7a250024","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-06-03T01:05:23.685594Z","signature_b64":"dcWnXSJ59hMrE8HtTeSqW374SGzrSHO7c3RgF5+E/RIo07TdUDZk/Zx893fpEryycVTyVqEBv0MVQONlhAXfBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c7c179931924ccd77d9174fe387869623726f5b69d45f1666e3bab8e7a250024","last_reissued_at":"2026-06-03T01:05:23.685222Z","signature_status":"signed_v1","first_computed_at":"2026-06-03T01:05:23.685222Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2606.02814","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-06-03T01:05:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"xXlGuy/Nb2mE9NU4adTprFVg6TGJivAOcl/RbZCKyY8pJcnayuged0xbsPh2Fl68g5AEzHPs0/UbacBRUEqOCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-07T14:44:21.493152Z"},"content_sha256":"95dc98c8ea22cf239ad95bf2e88af51362bc6bcfc11711e5649d980c9101fe10","schema_version":"1.0","event_id":"sha256:95dc98c8ea22cf239ad95bf2e88af51362bc6bcfc11711e5649d980c9101fe10"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:Y7AXTEYZETGNO7MROT7DQ6DJMI","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Do Neural Retrievers Prefer Certain Documents? Evidence of Learned Relevance Priors","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["cs.AI","cs.CL"],"primary_cat":"cs.IR","authors_text":"Edgar Altszyler, Francisco Valentini, Martin Fajcik","submitted_at":"2026-06-01T19:31:28Z","abstract_excerpt":"Neural retrievers are trained to estimate query-document relevance from annotated query-document pairs. Yet annotation protocols may not purely reflect relevance: they select only a subset of documents for labeling, and this selection can favor certain document types over others. We investigate whether supervised bi-encoder retrievers implicitly learn a document-level relevance prior: a query-independent signal encoded in their representation space as a side effect of training on annotated data. We estimate this prior by training simple classifiers on frozen document embeddings and evaluate th"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.02814","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/2606.02814/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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-06-03T01:05:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"iudRBUOS9kCfL3omB7VV0ZBzwWSHHJbbR437Wbvngq15GigY53odg6RzcMi2yXmtoftA3ckMA6BIL/JjFe0FDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-07T14:44:21.493545Z"},"content_sha256":"c696cffd6fd680a5b507b531508f0fbdd5d11531cd7c114338913637a2d9309c","schema_version":"1.0","event_id":"sha256:c696cffd6fd680a5b507b531508f0fbdd5d11531cd7c114338913637a2d9309c"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/Y7AXTEYZETGNO7MROT7DQ6DJMI/bundle.json","state_url":"https://pith.science/pith/Y7AXTEYZETGNO7MROT7DQ6DJMI/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/Y7AXTEYZETGNO7MROT7DQ6DJMI/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-06-07T14:44:21Z","links":{"resolver":"https://pith.science/pith/Y7AXTEYZETGNO7MROT7DQ6DJMI","bundle":"https://pith.science/pith/Y7AXTEYZETGNO7MROT7DQ6DJMI/bundle.json","state":"https://pith.science/pith/Y7AXTEYZETGNO7MROT7DQ6DJMI/state.json","well_known_bundle":"https://pith.science/.well-known/pith/Y7AXTEYZETGNO7MROT7DQ6DJMI/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:Y7AXTEYZETGNO7MROT7DQ6DJMI","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":"b502011b685c2bb8135d28821c95936cc69f611d39c782549ea5fe448156dc19","cross_cats_sorted":["cs.AI","cs.CL"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.IR","submitted_at":"2026-06-01T19:31:28Z","title_canon_sha256":"4e4537e3fede01ab0041ac31da51580ac764d27ce445bdec04865809d1096d78"},"schema_version":"1.0","source":{"id":"2606.02814","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.02814","created_at":"2026-06-03T01:05:23Z"},{"alias_kind":"arxiv_version","alias_value":"2606.02814v1","created_at":"2026-06-03T01:05:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.02814","created_at":"2026-06-03T01:05:23Z"},{"alias_kind":"pith_short_12","alias_value":"Y7AXTEYZETGN","created_at":"2026-06-03T01:05:23Z"},{"alias_kind":"pith_short_16","alias_value":"Y7AXTEYZETGNO7MR","created_at":"2026-06-03T01:05:23Z"},{"alias_kind":"pith_short_8","alias_value":"Y7AXTEYZ","created_at":"2026-06-03T01:05:23Z"}],"graph_snapshots":[{"event_id":"sha256:c696cffd6fd680a5b507b531508f0fbdd5d11531cd7c114338913637a2d9309c","target":"graph","created_at":"2026-06-03T01:05:23Z","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/2606.02814/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Neural retrievers are trained to estimate query-document relevance from annotated query-document pairs. Yet annotation protocols may not purely reflect relevance: they select only a subset of documents for labeling, and this selection can favor certain document types over others. We investigate whether supervised bi-encoder retrievers implicitly learn a document-level relevance prior: a query-independent signal encoded in their representation space as a side effect of training on annotated data. We estimate this prior by training simple classifiers on frozen document embeddings and evaluate th","authors_text":"Edgar Altszyler, Francisco Valentini, Martin Fajcik","cross_cats":["cs.AI","cs.CL"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.IR","submitted_at":"2026-06-01T19:31:28Z","title":"Do Neural Retrievers Prefer Certain Documents? Evidence of Learned Relevance Priors"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.02814","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":"sha256:95dc98c8ea22cf239ad95bf2e88af51362bc6bcfc11711e5649d980c9101fe10","target":"record","created_at":"2026-06-03T01:05:23Z","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":"b502011b685c2bb8135d28821c95936cc69f611d39c782549ea5fe448156dc19","cross_cats_sorted":["cs.AI","cs.CL"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.IR","submitted_at":"2026-06-01T19:31:28Z","title_canon_sha256":"4e4537e3fede01ab0041ac31da51580ac764d27ce445bdec04865809d1096d78"},"schema_version":"1.0","source":{"id":"2606.02814","kind":"arxiv","version":1}},"canonical_sha256":"c7c179931924ccd77d9174fe387869623726f5b69d45f1666e3bab8e7a250024","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c7c179931924ccd77d9174fe387869623726f5b69d45f1666e3bab8e7a250024","first_computed_at":"2026-06-03T01:05:23.685222Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-06-03T01:05:23.685222Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"dcWnXSJ59hMrE8HtTeSqW374SGzrSHO7c3RgF5+E/RIo07TdUDZk/Zx893fpEryycVTyVqEBv0MVQONlhAXfBQ==","signature_status":"signed_v1","signed_at":"2026-06-03T01:05:23.685594Z","signed_message":"canonical_sha256_bytes"},"source_id":"2606.02814","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:95dc98c8ea22cf239ad95bf2e88af51362bc6bcfc11711e5649d980c9101fe10","sha256:c696cffd6fd680a5b507b531508f0fbdd5d11531cd7c114338913637a2d9309c"],"state_sha256":"3e0066f2caf60d140430ff2f9d3483cd8ec0ee42a36c2631fe99b8e8a42acac1"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"H6FU5Hw9tL2Y5pSl+BdXlbfhr9gipvIL+ItxcYfN6kHd6aGrKxidyEs6xU/0SOJnHa9uNdY6tA1wE5stbAB2BA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-07T14:44:21.495486Z","bundle_sha256":"7f076b749744b8da4a4d9caa3affeac5920334c4c8fc43edf9b39417523deeb2"}}