{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2023:OF57OQZMRTFP6K3ANFPQCI2BWY","short_pith_number":"pith:OF57OQZM","schema_version":"1.0","canonical_sha256":"717bf7432c8ccaff2b60695f012341b633d0c938db8e09b11feb680c36edfb9b","source":{"kind":"arxiv","id":"2312.14632","version":2},"attestation_state":"computed","paper":{"title":"The Hierarchical Structure of Galactic Haloes: Differentiating Clusters from Stochastic Clumping with AstroLink","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Geraint F. Lewis, Pascal J. Elahi, Tobias Buck, William H. Oliver","submitted_at":"2023-12-22T12:10:16Z","abstract_excerpt":"We present AstroLink, an efficient and versatile clustering algorithm designed to hierarchically classify astrophysically-relevant structures from both synthetic and observational data sets. We build upon CluSTAR-ND, a hierarchical galaxy/(sub)halo finder, so that AstroLink now generates a two-dimensional representation of the implicit clustering structure as well as ensuring that clusters are statistically distinct from the noisy density fluctuations implicit within the $n$-dimensional input data. This redesign replaces the three cluster extraction parameters from CluSTAR-ND with a single par"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"2312.14632","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2023-12-22T12:10:16Z","cross_cats_sorted":[],"title_canon_sha256":"54d5b5831f742f79f4729a7fbba4be22d7ab5b0dfa04f7507c820198e62cff87","abstract_canon_sha256":"8652e66d5accc2b39350f556be3c958ab96515675918d88705a80ad025b8e93c"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T08:08:53.638731Z","signature_b64":"pMAlGmOLFKYwyc0YH3FJHxfrvb8i0IveOxbBcHY50elr6O03cGXRA8Dc4Im7tcju+2geqMAcRuwnWHNUFUXyAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"717bf7432c8ccaff2b60695f012341b633d0c938db8e09b11feb680c36edfb9b","last_reissued_at":"2026-07-05T08:08:53.638310Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T08:08:53.638310Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"The Hierarchical Structure of Galactic Haloes: Differentiating Clusters from Stochastic Clumping with AstroLink","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Geraint F. Lewis, Pascal J. Elahi, Tobias Buck, William H. Oliver","submitted_at":"2023-12-22T12:10:16Z","abstract_excerpt":"We present AstroLink, an efficient and versatile clustering algorithm designed to hierarchically classify astrophysically-relevant structures from both synthetic and observational data sets. We build upon CluSTAR-ND, a hierarchical galaxy/(sub)halo finder, so that AstroLink now generates a two-dimensional representation of the implicit clustering structure as well as ensuring that clusters are statistically distinct from the noisy density fluctuations implicit within the $n$-dimensional input data. This redesign replaces the three cluster extraction parameters from CluSTAR-ND with a single par"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2312.14632","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2312.14632/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"aliases":[{"alias_kind":"arxiv","alias_value":"2312.14632","created_at":"2026-07-05T08:08:53.638369+00:00"},{"alias_kind":"arxiv_version","alias_value":"2312.14632v2","created_at":"2026-07-05T08:08:53.638369+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2312.14632","created_at":"2026-07-05T08:08:53.638369+00:00"},{"alias_kind":"pith_short_12","alias_value":"OF57OQZMRTFP","created_at":"2026-07-05T08:08:53.638369+00:00"},{"alias_kind":"pith_short_16","alias_value":"OF57OQZMRTFP6K3A","created_at":"2026-07-05T08:08:53.638369+00:00"},{"alias_kind":"pith_short_8","alias_value":"OF57OQZM","created_at":"2026-07-05T08:08:53.638369+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/OF57OQZMRTFP6K3ANFPQCI2BWY","json":"https://pith.science/pith/OF57OQZMRTFP6K3ANFPQCI2BWY.json","graph_json":"https://pith.science/api/pith-number/OF57OQZMRTFP6K3ANFPQCI2BWY/graph.json","events_json":"https://pith.science/api/pith-number/OF57OQZMRTFP6K3ANFPQCI2BWY/events.json","paper":"https://pith.science/paper/OF57OQZM"},"agent_actions":{"view_html":"https://pith.science/pith/OF57OQZMRTFP6K3ANFPQCI2BWY","download_json":"https://pith.science/pith/OF57OQZMRTFP6K3ANFPQCI2BWY.json","view_paper":"https://pith.science/paper/OF57OQZM","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2312.14632&json=true","fetch_graph":"https://pith.science/api/pith-number/OF57OQZMRTFP6K3ANFPQCI2BWY/graph.json","fetch_events":"https://pith.science/api/pith-number/OF57OQZMRTFP6K3ANFPQCI2BWY/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/OF57OQZMRTFP6K3ANFPQCI2BWY/action/timestamp_anchor","attest_storage":"https://pith.science/pith/OF57OQZMRTFP6K3ANFPQCI2BWY/action/storage_attestation","attest_author":"https://pith.science/pith/OF57OQZMRTFP6K3ANFPQCI2BWY/action/author_attestation","sign_citation":"https://pith.science/pith/OF57OQZMRTFP6K3ANFPQCI2BWY/action/citation_signature","submit_replication":"https://pith.science/pith/OF57OQZMRTFP6K3ANFPQCI2BWY/action/replication_record"}},"created_at":"2026-07-05T08:08:53.638369+00:00","updated_at":"2026-07-05T08:08:53.638369+00:00"}