{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:EDEWANGTS6SAPNY35BFXSTNGVB","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":"da27ead97f719538c11ecb992c282c84d890c96f743c2093d7f183ea8136ab23","cross_cats_sorted":["cs.AI","cs.CL"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.LG","submitted_at":"2025-08-04T15:59:15Z","title_canon_sha256":"342a54ec1525a380fd3e1ba6463675be84772f24a181c210b5ec809585e52339"},"schema_version":"1.0","source":{"id":"2508.02546","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2508.02546","created_at":"2026-07-05T11:48:16Z"},{"alias_kind":"arxiv_version","alias_value":"2508.02546v1","created_at":"2026-07-05T11:48:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2508.02546","created_at":"2026-07-05T11:48:16Z"},{"alias_kind":"pith_short_12","alias_value":"EDEWANGTS6SA","created_at":"2026-07-05T11:48:16Z"},{"alias_kind":"pith_short_16","alias_value":"EDEWANGTS6SAPNY3","created_at":"2026-07-05T11:48:16Z"},{"alias_kind":"pith_short_8","alias_value":"EDEWANGT","created_at":"2026-07-05T11:48:16Z"}],"graph_snapshots":[{"event_id":"sha256:1ba138d45b16603c193d8a811b2c9cf4e49f6b3046fa83a9b730117dd8f30a89","target":"graph","created_at":"2026-07-05T11:48:16Z","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/2508.02546/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Attention sink (AS) is a consistent pattern in transformer attention maps where certain tokens (often special tokens or positional anchors) disproportionately attract attention from other tokens. We show that in transformers, AS is not an architectural artifact, but it is the manifestation of a fundamental geometric principle: the establishment of reference frames that anchor representational spaces. We analyze several architectures and identify three distinct reference frame types, centralized, distributed, and bidirectional, that correlate with the attention sink phenomenon. We show that the","authors_text":"Fabrizio Silvestri, Umberto Nanni, Valeria Ruscio","cross_cats":["cs.AI","cs.CL"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.LG","submitted_at":"2025-08-04T15:59:15Z","title":"What are you sinking? A geometric approach on attention sink"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2508.02546","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":"sha256:65a3ab6d4d5c114ea3979da536c7b3c925dc7b269008a74bbb20383666e8e1ec","target":"record","created_at":"2026-07-05T11:48:16Z","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":"da27ead97f719538c11ecb992c282c84d890c96f743c2093d7f183ea8136ab23","cross_cats_sorted":["cs.AI","cs.CL"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.LG","submitted_at":"2025-08-04T15:59:15Z","title_canon_sha256":"342a54ec1525a380fd3e1ba6463675be84772f24a181c210b5ec809585e52339"},"schema_version":"1.0","source":{"id":"2508.02546","kind":"arxiv","version":1}},"canonical_sha256":"20c96034d397a407b71be84b794da6a84c95d0668a68178abe7caeb6cb03dfe0","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"20c96034d397a407b71be84b794da6a84c95d0668a68178abe7caeb6cb03dfe0","first_computed_at":"2026-07-05T11:48:16.040221Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T11:48:16.040221Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"FELblDaZX6LFmLlOcs7Pt/FfTJwYol/OGa/MYtNU1ZJBOxMVrSE0twOsEJWgL0YSgxmGS9dNreaaQltdFtUrBw==","signature_status":"signed_v1","signed_at":"2026-07-05T11:48:16.040730Z","signed_message":"canonical_sha256_bytes"},"source_id":"2508.02546","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:65a3ab6d4d5c114ea3979da536c7b3c925dc7b269008a74bbb20383666e8e1ec","sha256:1ba138d45b16603c193d8a811b2c9cf4e49f6b3046fa83a9b730117dd8f30a89"],"state_sha256":"40239639773c281204798aeb52231edc6343783eaace18da7bde031d5adecfa1"}