{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:U6PQCGCFVTHGMM2DUZTFI2ZCWV","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":"eb23e9ad7e9763834b0f89f3940bb3dbb740568150705ff7aedcba40cece55fd","cross_cats_sorted":["astro-ph.EP","cs.LG"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2022-04-07T13:34:30Z","title_canon_sha256":"5f916dae5092eb7500e683ebb1db1974194372ce9320722048da4257be20da6c"},"schema_version":"1.0","source":{"id":"2204.03439","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2204.03439","created_at":"2026-07-05T05:03:23Z"},{"alias_kind":"arxiv_version","alias_value":"2204.03439v1","created_at":"2026-07-05T05:03:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2204.03439","created_at":"2026-07-05T05:03:23Z"},{"alias_kind":"pith_short_12","alias_value":"U6PQCGCFVTHG","created_at":"2026-07-05T05:03:23Z"},{"alias_kind":"pith_short_16","alias_value":"U6PQCGCFVTHGMM2D","created_at":"2026-07-05T05:03:23Z"},{"alias_kind":"pith_short_8","alias_value":"U6PQCGCF","created_at":"2026-07-05T05:03:23Z"}],"graph_snapshots":[{"event_id":"sha256:0c9034ddda7d7685006bf4a9d36265821d1d2e77c429e8f2c692071494157e00","target":"graph","created_at":"2026-07-05T05:03:23Z","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/2204.03439/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"High-contrast imaging of exoplanets hinges on powerful post-processing methods to denoise the data and separate the signal of a companion from its host star, which is typically orders of magnitude brighter. Existing post-processing algorithms do not use all prior domain knowledge that is available about the problem. We propose a new method that builds on our understanding of the systematic noise and the causal structure of the data-generating process. Our algorithm is based on a modified version of half-sibling regression (HSR), a flexible denoising framework that combines ideas from the field","authors_text":"Bernhard Sch\\\"olkopf, Markus J. Bonse, Sascha P. Quanz, Timothy D. Gebhard","cross_cats":["astro-ph.EP","cs.LG"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2022-04-07T13:34:30Z","title":"Half-sibling regression meets exoplanet imaging: PSF modeling and subtraction using a flexible, domain knowledge-driven, causal framework"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2204.03439","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:eca59126fa0e3b56089c0ee40de7a5af0364a325bbe1b9f1c725a95f6433c14e","target":"record","created_at":"2026-07-05T05:03:23Z","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":"eb23e9ad7e9763834b0f89f3940bb3dbb740568150705ff7aedcba40cece55fd","cross_cats_sorted":["astro-ph.EP","cs.LG"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2022-04-07T13:34:30Z","title_canon_sha256":"5f916dae5092eb7500e683ebb1db1974194372ce9320722048da4257be20da6c"},"schema_version":"1.0","source":{"id":"2204.03439","kind":"arxiv","version":1}},"canonical_sha256":"a79f011845acce663343a666546b22b56d1c6e616b4140b03b8b6ab34f9af486","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a79f011845acce663343a666546b22b56d1c6e616b4140b03b8b6ab34f9af486","first_computed_at":"2026-07-05T05:03:23.752389Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T05:03:23.752389Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"9UQk/BSkbTkSkr1SKL8fCY5UEtWyaeBYSUUoND9pTTcGElyjZjAoCwKR1pAPoDAfzQ+a99sfDagjS1lII/D5DQ==","signature_status":"signed_v1","signed_at":"2026-07-05T05:03:23.752749Z","signed_message":"canonical_sha256_bytes"},"source_id":"2204.03439","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:eca59126fa0e3b56089c0ee40de7a5af0364a325bbe1b9f1c725a95f6433c14e","sha256:0c9034ddda7d7685006bf4a9d36265821d1d2e77c429e8f2c692071494157e00"],"state_sha256":"0ef661c1f0ca8ee919fb1c428b71e57531fcf7ac99cf1778107793b6e88d3a3d"}