{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:ZIVBTKSJ3YT7SULAPBGY7XLPMT","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":"cf0d92b6e485a5c7e6d1613459bfa819ed74ff8b48d23e3f154a60fe99658ee3","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2025-04-03T08:41:14Z","title_canon_sha256":"49e9d60a2e583ace00aaaea60929fcb1ad70704ea59a6e48c37d058acb6b8e35"},"schema_version":"1.0","source":{"id":"2504.02394","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2504.02394","created_at":"2026-07-05T10:43:56Z"},{"alias_kind":"arxiv_version","alias_value":"2504.02394v1","created_at":"2026-07-05T10:43:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2504.02394","created_at":"2026-07-05T10:43:56Z"},{"alias_kind":"pith_short_12","alias_value":"ZIVBTKSJ3YT7","created_at":"2026-07-05T10:43:56Z"},{"alias_kind":"pith_short_16","alias_value":"ZIVBTKSJ3YT7SULA","created_at":"2026-07-05T10:43:56Z"},{"alias_kind":"pith_short_8","alias_value":"ZIVBTKSJ","created_at":"2026-07-05T10:43:56Z"}],"graph_snapshots":[{"event_id":"sha256:42fb06f44170ee144e58a0c9ec23e6997f32ebd628f14221211be0c2a6be01b2","target":"graph","created_at":"2026-07-05T10:43:56Z","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/2504.02394/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Mass ($M$) and luminosity ($L$) are fundamental parameters of stars but can only be measured indirectly. Typically, effective temperature ($T_{\\rm eff}$), surface gravity (${\\rm log}\\ g$) and metallicity ([M/H]) are derived from stellar spectra, then $M$, $L$ and stellar age ($t$) can be obtained by interpolating in the grid of stellar evolutionary models. In this paper, we use the Random Forest (RF) in combination with the evolutionary grid from PARSEC 1.2S to determine $M$, $L$, $t$ and initial mass ($M_{\\rm i}$) for early-type main-sequence stars ($T_{\\rm eff}\\geq 7,000\\ {\\rm K}$) as identi","authors_text":"Chao Liu, Jianping Xiong, Jiao Li, Qida Li, Xuefei Chen, Yanjun Guo, Zhanwen Han","cross_cats":["astro-ph.GA"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2025-04-03T08:41:14Z","title":"Mass, Luminosity, and Stellar Age of Early-type Stars from the LAMOST Survey"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2504.02394","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:b1bb3728a84e68a85fc451121635ba6c1b57c16ab5ec05b329d7edb93845f8bc","target":"record","created_at":"2026-07-05T10:43:56Z","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":"cf0d92b6e485a5c7e6d1613459bfa819ed74ff8b48d23e3f154a60fe99658ee3","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2025-04-03T08:41:14Z","title_canon_sha256":"49e9d60a2e583ace00aaaea60929fcb1ad70704ea59a6e48c37d058acb6b8e35"},"schema_version":"1.0","source":{"id":"2504.02394","kind":"arxiv","version":1}},"canonical_sha256":"ca2a19aa49de27f95160784d8fdd6f64df7c99ee3cdd1b47648f1d87cbf8b480","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ca2a19aa49de27f95160784d8fdd6f64df7c99ee3cdd1b47648f1d87cbf8b480","first_computed_at":"2026-07-05T10:43:56.256436Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T10:43:56.256436Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"5PeQXVjpb6Y2TD9LrBkdJZjKuTCGfzwHWxgPflpP9DJOsNVJzGB4pGBYeognlLV9YuFKiEeyw4lVH0GhaHnHDA==","signature_status":"signed_v1","signed_at":"2026-07-05T10:43:56.256949Z","signed_message":"canonical_sha256_bytes"},"source_id":"2504.02394","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b1bb3728a84e68a85fc451121635ba6c1b57c16ab5ec05b329d7edb93845f8bc","sha256:42fb06f44170ee144e58a0c9ec23e6997f32ebd628f14221211be0c2a6be01b2"],"state_sha256":"b7a79cc227fe26d9674d6532d5255647c2353add8dba33ff6951cdc24dc7d0b5"}