{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:BLIAR7FR2IFEXELORIOERW5ONK","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":"a7f308e33e78e40884c209857bc47e61c48067665c3ddf0ba0fe90813eeb899f","cross_cats_sorted":["cs.AI"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.NI","submitted_at":"2026-02-23T15:00:01Z","title_canon_sha256":"eeee3dd9114a20bc67d3255e285a1ee9517abb89a3535873a700fa31f8e904b4"},"schema_version":"1.0","source":{"id":"2603.04444","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2603.04444","created_at":"2026-06-03T01:05:11Z"},{"alias_kind":"arxiv_version","alias_value":"2603.04444v3","created_at":"2026-06-03T01:05:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2603.04444","created_at":"2026-06-03T01:05:11Z"},{"alias_kind":"pith_short_12","alias_value":"BLIAR7FR2IFE","created_at":"2026-06-03T01:05:11Z"},{"alias_kind":"pith_short_16","alias_value":"BLIAR7FR2IFEXELO","created_at":"2026-06-03T01:05:11Z"},{"alias_kind":"pith_short_8","alias_value":"BLIAR7FR","created_at":"2026-06-03T01:05:11Z"}],"graph_snapshots":[{"event_id":"sha256:4cac63c43cf7b9d8a1fc98c78e3e840e156b1f07fa7efac985a271565073b3b5","target":"graph","created_at":"2026-06-03T01:05:11Z","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/2603.04444/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"As large language models (LLMs) diversify across modalities, capabilities, and cost profiles, the problem of intelligent request routing -- selecting the right model for each query at inference time -- has become a critical systems challenge. We present vLLM Semantic Router, a signal-driven decision routing framework for Mixture-of-Modality (MoM) model deployments.\n  The central innovation is composable signal orchestration: the system extracts heterogeneous signal types from each request -- from sub-millisecond heuristic features (keyword patterns, language detection, context length, role-bas","authors_text":"Abdallah Samara, Asaad Balum, Avinash Changrani, Avishek Goswami, Baofa Fan, Bishen Yu, Bowei He, Brent Salisbury, Fang Han, Guohong Wen, Haichen Zhang, Hao Wu, Houston H. Zhang, Huamin Chen, Jianqiao Zheng, Jintao Zhang, Liav Weiss, Noa Limoy, Qiping Pan, Rehan Khan, Ryan Cook, Samzong Lu, Senan Zedan, Shuyi Wang, Xue (Steve) Liu, Xunzhuo Liu, Yehudit Kerido, Yossi Ovadia, Zhengda Tan, Zhijie Wang, Ziang Tang, Zohaib Hassan","cross_cats":["cs.AI"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.NI","submitted_at":"2026-02-23T15:00:01Z","title":"vLLM Semantic Router: Signal Driven Decision Routing for Mixture-of-Modality Models"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2603.04444","kind":"arxiv","version":3},"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":"sha256:94f6a28caa347713ca764c4dd0ddda9885fc598cfe152087c56f1102b0922410","target":"record","created_at":"2026-06-03T01:05:11Z","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":"a7f308e33e78e40884c209857bc47e61c48067665c3ddf0ba0fe90813eeb899f","cross_cats_sorted":["cs.AI"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.NI","submitted_at":"2026-02-23T15:00:01Z","title_canon_sha256":"eeee3dd9114a20bc67d3255e285a1ee9517abb89a3535873a700fa31f8e904b4"},"schema_version":"1.0","source":{"id":"2603.04444","kind":"arxiv","version":3}},"canonical_sha256":"0ad008fcb1d20a4b916e8a1c48dbae6abbcfea4f7ffef4be3a1e7863bbd3744e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0ad008fcb1d20a4b916e8a1c48dbae6abbcfea4f7ffef4be3a1e7863bbd3744e","first_computed_at":"2026-06-03T01:05:11.370106Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-06-03T01:05:11.370106Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"pFI2nmhtBAWaxFDomsSoBkQBf5LgxYf5PJNnuked4pykBudLZUNQ4io3/sblNQZ0pOB0O+8DiPJ3STukAnIUBw==","signature_status":"signed_v1","signed_at":"2026-06-03T01:05:11.370601Z","signed_message":"canonical_sha256_bytes"},"source_id":"2603.04444","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:94f6a28caa347713ca764c4dd0ddda9885fc598cfe152087c56f1102b0922410","sha256:4cac63c43cf7b9d8a1fc98c78e3e840e156b1f07fa7efac985a271565073b3b5"],"state_sha256":"bcb5fc5862f71802b810e5443559f15ef522da73f38e4d8769f9e2689a39651d"}