{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:WKYJZBDYHUFXTDIK3G5RFRKOCB","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":"55c9e7ad9ad988550108e093cba5d74111428cfafd183b7fa2e3f0903c78b52f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-04-29T20:04:34Z","title_canon_sha256":"eca9821fb81e9d6c977914bc17ba8c3f9d4946e26de5ff7c3a00fb2825b1fcda"},"schema_version":"1.0","source":{"id":"1304.7789","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1304.7789","created_at":"2026-05-18T01:50:14Z"},{"alias_kind":"arxiv_version","alias_value":"1304.7789v1","created_at":"2026-05-18T01:50:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1304.7789","created_at":"2026-05-18T01:50:14Z"},{"alias_kind":"pith_short_12","alias_value":"WKYJZBDYHUFX","created_at":"2026-05-18T12:28:04Z"},{"alias_kind":"pith_short_16","alias_value":"WKYJZBDYHUFXTDIK","created_at":"2026-05-18T12:28:04Z"},{"alias_kind":"pith_short_8","alias_value":"WKYJZBDY","created_at":"2026-05-18T12:28:04Z"}],"graph_snapshots":[{"event_id":"sha256:d3305957f2f7bdf12adba52bead30e053be2c5b263925844faf48300c79722d4","target":"graph","created_at":"2026-05-18T01:50:14Z","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"},"paper":{"abstract_excerpt":"We describe a statistical model to estimate the covariance matrix of matter tracer two-point correlation functions with cosmological simulations. Assuming a fixed number of cosmological simulation runs, we describe how to build a `statistical emulator' of the two-point function covariance over a specified range of input cosmological parameters. Because the simulation runs with different cosmological models help to constrain the form of the covariance, we predict that the cosmology-dependent covariance may be estimated with a comparable number of simulations as would be needed to estimate the c","authors_text":"Christopher B. Morrison, Michael D. Schneider","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-04-29T20:04:34Z","title":"On estimating cosmology-dependent covariance matrices"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1304.7789","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:bc6adb69b6f63808414a06a4335bf959efeca80d20f61478983d0d32b8dca01d","target":"record","created_at":"2026-05-18T01:50:14Z","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":"55c9e7ad9ad988550108e093cba5d74111428cfafd183b7fa2e3f0903c78b52f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-04-29T20:04:34Z","title_canon_sha256":"eca9821fb81e9d6c977914bc17ba8c3f9d4946e26de5ff7c3a00fb2825b1fcda"},"schema_version":"1.0","source":{"id":"1304.7789","kind":"arxiv","version":1}},"canonical_sha256":"b2b09c84783d0b798d0ad9bb12c54e106b4726fad0805c5ac9e2c589b90953a8","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b2b09c84783d0b798d0ad9bb12c54e106b4726fad0805c5ac9e2c589b90953a8","first_computed_at":"2026-05-18T01:50:14.397424Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:50:14.397424Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"aAcGbaGcfUxbxhAPaS3u0WoCjC+NLcDfq4TriPRhv5IEBKFZhDjUir00qM7G7QHr8PeDMKkeTF4s/u/P6+d8DQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:50:14.397962Z","signed_message":"canonical_sha256_bytes"},"source_id":"1304.7789","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:bc6adb69b6f63808414a06a4335bf959efeca80d20f61478983d0d32b8dca01d","sha256:d3305957f2f7bdf12adba52bead30e053be2c5b263925844faf48300c79722d4"],"state_sha256":"f7deb5d93973981fc6f393a8acbff60905ea42fafcd75de1a3b721236e703cb6"}