{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:IJHMC4R3DL3VETEA7YJ6ILPDJV","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":"b494e2e51d86dc7cb16c9265347637ce84c91a1c463e3d3d4e478e324d44335b","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.IR","submitted_at":"2026-08-11T14:58:26Z","title_canon_sha256":"942edec774e347a29fd8bc9865546e015057391b86ee8e080b73d9b394347d63"},"schema_version":"1.0","source":{"id":"2608.11015","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2608.11015","created_at":"2026-08-12T01:24:04Z"},{"alias_kind":"arxiv_version","alias_value":"2608.11015v1","created_at":"2026-08-12T01:24:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2608.11015","created_at":"2026-08-12T01:24:04Z"},{"alias_kind":"pith_short_12","alias_value":"IJHMC4R3DL3V","created_at":"2026-08-12T01:24:04Z"},{"alias_kind":"pith_short_16","alias_value":"IJHMC4R3DL3VETEA","created_at":"2026-08-12T01:24:04Z"},{"alias_kind":"pith_short_8","alias_value":"IJHMC4R3","created_at":"2026-08-12T01:24:04Z"}],"graph_snapshots":[{"event_id":"sha256:fb6f8fa219292cbf79ea3e2aac0c0fbe207d157d3b3718e2a0322d4cd52440f3","target":"graph","created_at":"2026-08-12T01:24:04Z","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/2608.11015/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We introduce Sona, a single-model generative recommender for Yandex Music. In an online A/B test, Sona replaced the entire production cascade, comprising more than 15 candidate generators followed by pre-ranking and ranking models that consume hundreds of features, including signals from large transformer models such as Argus and target-attention scorers, while significantly improving key engagement metrics.\n  The architecture of Sona unifies candidate generation and ranking around a shared user representation. Its encoder transforms the user's chronological sequence of logged engagement event","authors_text":"Aleksei Krasilnikov, Alexey Nadtochiy, Andrey Semenov, Andrey Tsyrkunov, Anna Krivonos, Anna Lipkina, Artem Matveev, Daniil Burlakov, Daniil Leschev, Daria Tikhonovich, Denis Burshtein, Ekaterina Dmitrieva, Eugene Krofto, Grigorii Khlystov, Ilya Murzin, Kirill Golovko, Ksenia Sycheva, Leonid Dmitriev, Mariia Rozaeva, Mariia Ulianova, Mikhail Sandul, Nikolai Savushkin, Oleg Sorokin, Roman Odobesku, Semyon Panenko, Sergei Liamaev, Sergei Makeev, Sona Team: Alexandr Udeneev, Vadim Shilov, Veronika Ivanova, Viktor Yanush, Vladimir Baikalov, Vladislav Dodonov, Vladislav Tytskiy","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.IR","submitted_at":"2026-08-11T14:58:26Z","title":"Sona Technical Report"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2608.11015","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":"sha256:04c04d9291b82e1aa1c106b9991444732ac3fbfec850765216bbdfa66be4eb7d","target":"record","created_at":"2026-08-12T01:24:04Z","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":"b494e2e51d86dc7cb16c9265347637ce84c91a1c463e3d3d4e478e324d44335b","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.IR","submitted_at":"2026-08-11T14:58:26Z","title_canon_sha256":"942edec774e347a29fd8bc9865546e015057391b86ee8e080b73d9b394347d63"},"schema_version":"1.0","source":{"id":"2608.11015","kind":"arxiv","version":1}},"canonical_sha256":"424ec1723b1af7524c80fe13e42de34d6e3e119f58ff3397ab037359c74633da","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"424ec1723b1af7524c80fe13e42de34d6e3e119f58ff3397ab037359c74633da","first_computed_at":"2026-08-12T01:24:04.358587Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-08-12T01:24:04.358587Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"BT8bz/UdHiD42tDAyWPY1HKYcYnVCXFI+mHcCexnjsBGfmXoXjtiKvspAbU4dNaz0NfCCXKYE5LvorKIX2+QDQ==","signature_status":"signed_v1","signed_at":"2026-08-12T01:24:04.364661Z","signed_message":"canonical_sha256_bytes"},"source_id":"2608.11015","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:04c04d9291b82e1aa1c106b9991444732ac3fbfec850765216bbdfa66be4eb7d","sha256:fb6f8fa219292cbf79ea3e2aac0c0fbe207d157d3b3718e2a0322d4cd52440f3"],"state_sha256":"777e4860199490d17bfcf8c3f7400d55e5b6dd3c724fb08fc8eb656707cfebe4"}