{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:QJYRBCOITE4TJ5ZP5M7YEW745E","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":"6aa9ce5ad50b7d42072b6fe5e4762df26eb0861355db9acf5fd2b9ddd9bbe26a","cross_cats_sorted":["astro-ph.IM","hep-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2024-05-02T15:39:09Z","title_canon_sha256":"206c9312704567e3a2c6dfdbcfb946b207f76ddb5065353a8c4fafb6c1f3c756"},"schema_version":"1.0","source":{"id":"2405.01396","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2405.01396","created_at":"2026-07-05T08:14:44Z"},{"alias_kind":"arxiv_version","alias_value":"2405.01396v1","created_at":"2026-07-05T08:14:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2405.01396","created_at":"2026-07-05T08:14:44Z"},{"alias_kind":"pith_short_12","alias_value":"QJYRBCOITE4T","created_at":"2026-07-05T08:14:44Z"},{"alias_kind":"pith_short_16","alias_value":"QJYRBCOITE4TJ5ZP","created_at":"2026-07-05T08:14:44Z"},{"alias_kind":"pith_short_8","alias_value":"QJYRBCOI","created_at":"2026-07-05T08:14:44Z"}],"graph_snapshots":[{"event_id":"sha256:adc26005e2a67c5b0595dcb992432cb1fa8e9fe9c213da896ff98a06d9c77aa3","target":"graph","created_at":"2026-07-05T08:14:44Z","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/2405.01396/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Cosmological emulators of observables such as the Cosmic Microwave Background (CMB) spectra and matter power spectra commonly use training data sampled from a Latin hypercube. This method often incurs high computational costs by covering less relevant parts of the parameter space, especially in high dimensions where only a small fraction of the parameter space yields a significant likelihood.\n  In this paper, we introduce hypersphere sampling, which instead concentrates sample points in regions with higher likelihoods, significantly enhancing the efficiency and accuracy of emulators. A novel a","authors_text":"Andreas Nygaard, Emil Brinch Holm, Steen Hannestad, Thomas Tram","cross_cats":["astro-ph.IM","hep-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2024-05-02T15:39:09Z","title":"Cutting corners: Hypersphere sampling as a new standard for cosmological emulators"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2405.01396","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:a4df4bbf9ca7ec38bdf6fb33c9593f008023bed0ae26ead0203192b1a05f696a","target":"record","created_at":"2026-07-05T08:14:44Z","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":"6aa9ce5ad50b7d42072b6fe5e4762df26eb0861355db9acf5fd2b9ddd9bbe26a","cross_cats_sorted":["astro-ph.IM","hep-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2024-05-02T15:39:09Z","title_canon_sha256":"206c9312704567e3a2c6dfdbcfb946b207f76ddb5065353a8c4fafb6c1f3c756"},"schema_version":"1.0","source":{"id":"2405.01396","kind":"arxiv","version":1}},"canonical_sha256":"82711089c8993934f72feb3f825bfce924299e696ba3c81c69360401ae04564a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"82711089c8993934f72feb3f825bfce924299e696ba3c81c69360401ae04564a","first_computed_at":"2026-07-05T08:14:44.654781Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T08:14:44.654781Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"B0+NE3zSj9UYkZZDdEDOoW32llTLgmPNzvYjOyOfaYDFDd9wzzjWNBEiO2ervTcouVyacgbGTRUN4nsugmlSBg==","signature_status":"signed_v1","signed_at":"2026-07-05T08:14:44.655283Z","signed_message":"canonical_sha256_bytes"},"source_id":"2405.01396","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a4df4bbf9ca7ec38bdf6fb33c9593f008023bed0ae26ead0203192b1a05f696a","sha256:adc26005e2a67c5b0595dcb992432cb1fa8e9fe9c213da896ff98a06d9c77aa3"],"state_sha256":"25c78f4d097a6683015c90c8ff5819294632fee76fd45ad3ec8ea67ec3818087"}