{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:HV6UJKXDLPPOZDOXTTUQS6DHOW","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":"d51c74195909db3ab78bf2a348d065c71ff66d8709c1898e02267d18c6c438e6","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2026-07-18T01:57:26Z","title_canon_sha256":"b00c5338962ad786973efd861117dbe3fea14bb1138b3ed438e1ec6b98aebc59"},"schema_version":"1.0","source":{"id":"2607.16585","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2607.16585","created_at":"2026-07-21T00:20:26Z"},{"alias_kind":"arxiv_version","alias_value":"2607.16585v1","created_at":"2026-07-21T00:20:26Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2607.16585","created_at":"2026-07-21T00:20:26Z"},{"alias_kind":"pith_short_12","alias_value":"HV6UJKXDLPPO","created_at":"2026-07-21T00:20:26Z"},{"alias_kind":"pith_short_16","alias_value":"HV6UJKXDLPPOZDOX","created_at":"2026-07-21T00:20:26Z"},{"alias_kind":"pith_short_8","alias_value":"HV6UJKXD","created_at":"2026-07-21T00:20:26Z"}],"graph_snapshots":[{"event_id":"sha256:a4ea24b5505ed537e3a7cdc9c0fc9b52349fea14fb7101160c101137871c6f43","target":"graph","created_at":"2026-07-21T00:20:26Z","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/2607.16585/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We present effective temperature (Teff) estimates of low-mass stars and T Tauri stars (TTS) candidate detections derived from automated spectroscopic measurements and low-complexity machine-learning models applied to the LAMOST DR10 V2 survey. Equivalent widths of key diagnostic spectral features, including the atomic lines Halpha, LiI 6708 AA and TiO/VO molecular bands, are automatically measured for all stars within 1 kpc observed by LAMOST. Using nine spectral features as inputs, we train a Gradient Boosting Machine tree-based regression model, calibrated with synthetic spectra from the PHO","authors_text":"B. Sabogal, C. D. Millan-Valderrama, J. Hernandez, J. Mu\\~noz","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2026-07-18T01:57:26Z","title":"Effective temperatures estimation of low-mass stars and identification of T Tauri stars in LAMOST DR10 using machine learning"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.16585","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":"sha256:0dd7410cc1d250e50d08f3d3966d61e411c614b542a6a6f8549a36463692bf26","target":"record","created_at":"2026-07-21T00:20:26Z","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":"d51c74195909db3ab78bf2a348d065c71ff66d8709c1898e02267d18c6c438e6","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2026-07-18T01:57:26Z","title_canon_sha256":"b00c5338962ad786973efd861117dbe3fea14bb1138b3ed438e1ec6b98aebc59"},"schema_version":"1.0","source":{"id":"2607.16585","kind":"arxiv","version":1}},"canonical_sha256":"3d7d44aae35bdeec8dd79ce909786775844db0c2d6b193feffda2962ec4677d3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3d7d44aae35bdeec8dd79ce909786775844db0c2d6b193feffda2962ec4677d3","first_computed_at":"2026-07-21T00:20:26.860754Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-21T00:20:26.860754Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"j4U2sVFdWtdZ9TvDDIeNpM7iIOVVlMo90NewcW+PIv3fBhTEnMK+y4vgGdwXJXFut5xhastfI44PeynyPY+ICA==","signature_status":"signed_v1","signed_at":"2026-07-21T00:20:26.861664Z","signed_message":"canonical_sha256_bytes"},"source_id":"2607.16585","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0dd7410cc1d250e50d08f3d3966d61e411c614b542a6a6f8549a36463692bf26","sha256:a4ea24b5505ed537e3a7cdc9c0fc9b52349fea14fb7101160c101137871c6f43"],"state_sha256":"57424f6306535518349abc3fd7690c5963435fd3c93b80c22bdea975845fd6e6"}