{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:DSIU7D2LOCMKKR2ZJYDESQF2AO","short_pith_number":"pith:DSIU7D2L","canonical_record":{"source":{"id":"2606.02737","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.IR","submitted_at":"2026-06-01T18:04:26Z","cross_cats_sorted":["cs.AI","cs.CL"],"title_canon_sha256":"62fe0971471ec30d20aaed0d8a4dbe7ae89f43bb65f31be6b0baa1267e38b7b7","abstract_canon_sha256":"342f780cd5d5f2366bd799b9a482e8746cf6b8e2e5e2823086ca2f316d64204f"},"schema_version":"1.0"},"canonical_sha256":"1c914f8f4b7098a547594e064940ba038933ca4491ecd1139a2adb182e2452a5","source":{"kind":"arxiv","id":"2606.02737","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.02737","created_at":"2026-06-03T00:05:08Z"},{"alias_kind":"arxiv_version","alias_value":"2606.02737v1","created_at":"2026-06-03T00:05:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.02737","created_at":"2026-06-03T00:05:08Z"},{"alias_kind":"pith_short_12","alias_value":"DSIU7D2LOCMK","created_at":"2026-06-03T00:05:08Z"},{"alias_kind":"pith_short_16","alias_value":"DSIU7D2LOCMKKR2Z","created_at":"2026-06-03T00:05:08Z"},{"alias_kind":"pith_short_8","alias_value":"DSIU7D2L","created_at":"2026-06-03T00:05:08Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:DSIU7D2LOCMKKR2ZJYDESQF2AO","target":"record","payload":{"canonical_record":{"source":{"id":"2606.02737","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.IR","submitted_at":"2026-06-01T18:04:26Z","cross_cats_sorted":["cs.AI","cs.CL"],"title_canon_sha256":"62fe0971471ec30d20aaed0d8a4dbe7ae89f43bb65f31be6b0baa1267e38b7b7","abstract_canon_sha256":"342f780cd5d5f2366bd799b9a482e8746cf6b8e2e5e2823086ca2f316d64204f"},"schema_version":"1.0"},"canonical_sha256":"1c914f8f4b7098a547594e064940ba038933ca4491ecd1139a2adb182e2452a5","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-06-03T00:05:08.410995Z","signature_b64":"owsTs82powIwrtTuTPjq7GnY8syZT/8fNEc6B2XQcLcUjTftLUKMFJhRFTJWGHkhkrN8JkXNdDoEZdU2AYCnDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"1c914f8f4b7098a547594e064940ba038933ca4491ecd1139a2adb182e2452a5","last_reissued_at":"2026-06-03T00:05:08.410584Z","signature_status":"signed_v1","first_computed_at":"2026-06-03T00:05:08.410584Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2606.02737","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":"2026-06-03T00:05:08Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"rHNe50VmOYZaKKyiAcSCuZ9B1GC0pKfh0gmdGoSXXkVa0gMdvzd9DcrgT8Plskz7jO9pDaev0MpQosM4JTO2DA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T19:59:59.671550Z"},"content_sha256":"bdaf08c7f60af66d415e50496b10d30772bfe16f5d47e898fa3d1a3d7ae6c81b","schema_version":"1.0","event_id":"sha256:bdaf08c7f60af66d415e50496b10d30772bfe16f5d47e898fa3d1a3d7ae6c81b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:DSIU7D2LOCMKKR2ZJYDESQF2AO","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Attention Calibration for Position-Fair Dense Information Retrieval","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["cs.AI","cs.CL"],"primary_cat":"cs.IR","authors_text":"Andrianos Michail, Elias Schuhmacher, Juri Opitz, Rico Sennrich, Simon Clematide","submitted_at":"2026-06-01T18:04:26Z","abstract_excerpt":"Dense retrieval models exhibit positional bias: retrieval effectiveness degrades when relevant information appears later in a passage (Zeng et al., 2025). We ask whether this bias can be reduced at inference time, without retraining and without sacrificing overall retrieval effectiveness. To this end, we adapt inference-time attention calibration (Schuhmacher et al., 2026) to downstream retrieval and extend it with a strength coefficient lambda that interpolates between the original and fully calibrated attention distributions. Across three embedding models on SQuAD-PosQ and FineWeb-PosQ, we e"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.02737","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/2606.02737/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":"2026-06-03T00:05:08Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"PWultdAgTYKEN0rZa/NtS7TDWWCT6fAtPVncnkENdIlfLS6n8eVjrNpJp9ugGYipBg/Iy2QiBB8aOQqJl14jCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T19:59:59.671923Z"},"content_sha256":"a102fb25684f508c685bb2573fe89c09c0fb9cd8856dcfe4c22f5da962cf5b4f","schema_version":"1.0","event_id":"sha256:a102fb25684f508c685bb2573fe89c09c0fb9cd8856dcfe4c22f5da962cf5b4f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/DSIU7D2LOCMKKR2ZJYDESQF2AO/bundle.json","state_url":"https://pith.science/pith/DSIU7D2LOCMKKR2ZJYDESQF2AO/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/DSIU7D2LOCMKKR2ZJYDESQF2AO/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":"2026-06-03T19:59:59Z","links":{"resolver":"https://pith.science/pith/DSIU7D2LOCMKKR2ZJYDESQF2AO","bundle":"https://pith.science/pith/DSIU7D2LOCMKKR2ZJYDESQF2AO/bundle.json","state":"https://pith.science/pith/DSIU7D2LOCMKKR2ZJYDESQF2AO/state.json","well_known_bundle":"https://pith.science/.well-known/pith/DSIU7D2LOCMKKR2ZJYDESQF2AO/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:DSIU7D2LOCMKKR2ZJYDESQF2AO","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":"342f780cd5d5f2366bd799b9a482e8746cf6b8e2e5e2823086ca2f316d64204f","cross_cats_sorted":["cs.AI","cs.CL"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.IR","submitted_at":"2026-06-01T18:04:26Z","title_canon_sha256":"62fe0971471ec30d20aaed0d8a4dbe7ae89f43bb65f31be6b0baa1267e38b7b7"},"schema_version":"1.0","source":{"id":"2606.02737","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.02737","created_at":"2026-06-03T00:05:08Z"},{"alias_kind":"arxiv_version","alias_value":"2606.02737v1","created_at":"2026-06-03T00:05:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.02737","created_at":"2026-06-03T00:05:08Z"},{"alias_kind":"pith_short_12","alias_value":"DSIU7D2LOCMK","created_at":"2026-06-03T00:05:08Z"},{"alias_kind":"pith_short_16","alias_value":"DSIU7D2LOCMKKR2Z","created_at":"2026-06-03T00:05:08Z"},{"alias_kind":"pith_short_8","alias_value":"DSIU7D2L","created_at":"2026-06-03T00:05:08Z"}],"graph_snapshots":[{"event_id":"sha256:a102fb25684f508c685bb2573fe89c09c0fb9cd8856dcfe4c22f5da962cf5b4f","target":"graph","created_at":"2026-06-03T00:05:08Z","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/2606.02737/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Dense retrieval models exhibit positional bias: retrieval effectiveness degrades when relevant information appears later in a passage (Zeng et al., 2025). We ask whether this bias can be reduced at inference time, without retraining and without sacrificing overall retrieval effectiveness. To this end, we adapt inference-time attention calibration (Schuhmacher et al., 2026) to downstream retrieval and extend it with a strength coefficient lambda that interpolates between the original and fully calibrated attention distributions. Across three embedding models on SQuAD-PosQ and FineWeb-PosQ, we e","authors_text":"Andrianos Michail, Elias Schuhmacher, Juri Opitz, Rico Sennrich, Simon Clematide","cross_cats":["cs.AI","cs.CL"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.IR","submitted_at":"2026-06-01T18:04:26Z","title":"Attention Calibration for Position-Fair Dense Information Retrieval"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.02737","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:bdaf08c7f60af66d415e50496b10d30772bfe16f5d47e898fa3d1a3d7ae6c81b","target":"record","created_at":"2026-06-03T00:05:08Z","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":"342f780cd5d5f2366bd799b9a482e8746cf6b8e2e5e2823086ca2f316d64204f","cross_cats_sorted":["cs.AI","cs.CL"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.IR","submitted_at":"2026-06-01T18:04:26Z","title_canon_sha256":"62fe0971471ec30d20aaed0d8a4dbe7ae89f43bb65f31be6b0baa1267e38b7b7"},"schema_version":"1.0","source":{"id":"2606.02737","kind":"arxiv","version":1}},"canonical_sha256":"1c914f8f4b7098a547594e064940ba038933ca4491ecd1139a2adb182e2452a5","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1c914f8f4b7098a547594e064940ba038933ca4491ecd1139a2adb182e2452a5","first_computed_at":"2026-06-03T00:05:08.410584Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-06-03T00:05:08.410584Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"owsTs82powIwrtTuTPjq7GnY8syZT/8fNEc6B2XQcLcUjTftLUKMFJhRFTJWGHkhkrN8JkXNdDoEZdU2AYCnDg==","signature_status":"signed_v1","signed_at":"2026-06-03T00:05:08.410995Z","signed_message":"canonical_sha256_bytes"},"source_id":"2606.02737","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:bdaf08c7f60af66d415e50496b10d30772bfe16f5d47e898fa3d1a3d7ae6c81b","sha256:a102fb25684f508c685bb2573fe89c09c0fb9cd8856dcfe4c22f5da962cf5b4f"],"state_sha256":"0598801dd499ed7da8abb75306f9db1e65489440aeee12f70f7b487ca70e3f9f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"90bla2KEA8W+K8hIqkDBc8y6xcBC+UDm7xVnMYhrTfJKh1sgkXahcK276LUnts/L/PFU9OMVyziPfvSNXBiCCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-03T19:59:59.674044Z","bundle_sha256":"19d3efe7e49d4901b453c8f2110c7f98686fde2dc14f905e6fb307c1554bae8e"}}