{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:47FG6KXY4QM3PDZGBR3V24HSTO","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":"4079aca71fe4dc3dfebeca4af07e9befcadf71babec194e16281241e728919e6","cross_cats_sorted":["astro-ph.GA","astro-ph.SR"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2024-11-07T14:35:32Z","title_canon_sha256":"9acdd8fcb7cebe71f4a2cc725001875786a363804270b7440dc83019d87f9fd0"},"schema_version":"1.0","source":{"id":"2411.04750","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2411.04750","created_at":"2026-07-05T09:32:24Z"},{"alias_kind":"arxiv_version","alias_value":"2411.04750v1","created_at":"2026-07-05T09:32:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2411.04750","created_at":"2026-07-05T09:32:24Z"},{"alias_kind":"pith_short_12","alias_value":"47FG6KXY4QM3","created_at":"2026-07-05T09:32:24Z"},{"alias_kind":"pith_short_16","alias_value":"47FG6KXY4QM3PDZG","created_at":"2026-07-05T09:32:24Z"},{"alias_kind":"pith_short_8","alias_value":"47FG6KXY","created_at":"2026-07-05T09:32:24Z"}],"graph_snapshots":[{"event_id":"sha256:4ccfdc70ad17c646d96472f3b8556c95bbfbedb055a1043d98601e50c20803a6","target":"graph","created_at":"2026-07-05T09:32:24Z","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/2411.04750/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Machine learning models in astrophysics are often limited in scope and cannot adapt to data from new instruments or tasks. We introduce SpectraFM, a Transformer-based foundation model architecture that can be pre-trained on stellar spectra from any wavelength range and instrument. SpectraFM excels in generalization by combining flexibility with knowledge transfer from pre-training, allowing it to outperform traditional machine learning methods, especially in scenarios with limited training data. Our model is pre-trained on approximately 90k examples of synthetic spectra to predict the chemical","authors_text":"Jo Bovy, Nolan Koblischke","cross_cats":["astro-ph.GA","astro-ph.SR"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2024-11-07T14:35:32Z","title":"SpectraFM: Tuning into Stellar Foundation Models"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2411.04750","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":"sha256:91514c0ca9bfacc014c94a62de08f536ba4d17ff96cd439176d56c758d408644","target":"record","created_at":"2026-07-05T09:32:24Z","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":"4079aca71fe4dc3dfebeca4af07e9befcadf71babec194e16281241e728919e6","cross_cats_sorted":["astro-ph.GA","astro-ph.SR"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2024-11-07T14:35:32Z","title_canon_sha256":"9acdd8fcb7cebe71f4a2cc725001875786a363804270b7440dc83019d87f9fd0"},"schema_version":"1.0","source":{"id":"2411.04750","kind":"arxiv","version":1}},"canonical_sha256":"e7ca6f2af8e419b78f260c775d70f29ba7c1e9459d74185466467a56d09632d6","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e7ca6f2af8e419b78f260c775d70f29ba7c1e9459d74185466467a56d09632d6","first_computed_at":"2026-07-05T09:32:24.797900Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T09:32:24.797900Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"w9DCf7WkjLjlVyG2goZGdGJCi/v7jxfBdP4+KYD7PLG6PbXZTAVt+CcpKciNgsCcgMifLgrEE94XsITfIqNWBg==","signature_status":"signed_v1","signed_at":"2026-07-05T09:32:24.798381Z","signed_message":"canonical_sha256_bytes"},"source_id":"2411.04750","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:91514c0ca9bfacc014c94a62de08f536ba4d17ff96cd439176d56c758d408644","sha256:4ccfdc70ad17c646d96472f3b8556c95bbfbedb055a1043d98601e50c20803a6"],"state_sha256":"044a4b1db23cbe64b20ef4aac67defa61446e07a6f65042e0c5b8d8725da975e"}