{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2015:CXQVG3R7F4XU7JKVR6DCJFQF7M","short_pith_number":"pith:CXQVG3R7","schema_version":"1.0","canonical_sha256":"15e1536e3f2f2f4fa5558f86249605fb3afa87884eb3fc9212e21e48eeebba04","source":{"kind":"arxiv","id":"1503.04127","version":2},"attestation_state":"computed","paper":{"title":"Image patch analysis of sunspots and active regions. I. Intrinsic dimension and correlation analysis","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.CV"],"primary_cat":"astro-ph.SR","authors_text":"Alfred O. Hero III, Fraser Watson, Jimmy J. Li, Kevin R. Moon, Ruben de Visscher, Veronique Delouille","submitted_at":"2015-03-13T16:09:44Z","abstract_excerpt":"The flare-productivity of an active region is observed to be related to its spatial complexity. Mount Wilson or McIntosh sunspot classifications measure such complexity but in a categorical way, and may therefore not use all the information present in the observations. Moreover, such categorical schemes hinder a systematic study of an active region's evolution for example. We propose fine-scale quantitative descriptors for an active region's complexity and relate them to the Mount Wilson classification. We analyze the local correlation structure within continuum and magnetogram data, as well a"},"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":"1503.04127","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-03-13T16:09:44Z","cross_cats_sorted":["cs.CV"],"title_canon_sha256":"fa31aa56ee2da505841366d18a175ee2ed2b92741656817ea943e5458df42ed1","abstract_canon_sha256":"a4158a8c2c277fe639cdb39d3148b70e972465a13167cb15277a86fb23d72516"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:19:19.243062Z","signature_b64":"24UZLBDjaaHlSuO6l5QhEXXiSpstqQHXAkPqZPfkeJ+u8ApYnWzD4CP2sAHvbbHYQo5jIz2izLMIV86iPPexAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"15e1536e3f2f2f4fa5558f86249605fb3afa87884eb3fc9212e21e48eeebba04","last_reissued_at":"2026-05-18T01:19:19.242467Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:19:19.242467Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Image patch analysis of sunspots and active regions. I. Intrinsic dimension and correlation analysis","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.CV"],"primary_cat":"astro-ph.SR","authors_text":"Alfred O. Hero III, Fraser Watson, Jimmy J. Li, Kevin R. Moon, Ruben de Visscher, Veronique Delouille","submitted_at":"2015-03-13T16:09:44Z","abstract_excerpt":"The flare-productivity of an active region is observed to be related to its spatial complexity. Mount Wilson or McIntosh sunspot classifications measure such complexity but in a categorical way, and may therefore not use all the information present in the observations. Moreover, such categorical schemes hinder a systematic study of an active region's evolution for example. We propose fine-scale quantitative descriptors for an active region's complexity and relate them to the Mount Wilson classification. We analyze the local correlation structure within continuum and magnetogram data, as well a"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1503.04127","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":""},"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":"1503.04127","created_at":"2026-05-18T01:19:19.242543+00:00"},{"alias_kind":"arxiv_version","alias_value":"1503.04127v2","created_at":"2026-05-18T01:19:19.242543+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1503.04127","created_at":"2026-05-18T01:19:19.242543+00:00"},{"alias_kind":"pith_short_12","alias_value":"CXQVG3R7F4XU","created_at":"2026-05-18T12:29:17.054201+00:00"},{"alias_kind":"pith_short_16","alias_value":"CXQVG3R7F4XU7JKV","created_at":"2026-05-18T12:29:17.054201+00:00"},{"alias_kind":"pith_short_8","alias_value":"CXQVG3R7","created_at":"2026-05-18T12:29:17.054201+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/CXQVG3R7F4XU7JKVR6DCJFQF7M","json":"https://pith.science/pith/CXQVG3R7F4XU7JKVR6DCJFQF7M.json","graph_json":"https://pith.science/api/pith-number/CXQVG3R7F4XU7JKVR6DCJFQF7M/graph.json","events_json":"https://pith.science/api/pith-number/CXQVG3R7F4XU7JKVR6DCJFQF7M/events.json","paper":"https://pith.science/paper/CXQVG3R7"},"agent_actions":{"view_html":"https://pith.science/pith/CXQVG3R7F4XU7JKVR6DCJFQF7M","download_json":"https://pith.science/pith/CXQVG3R7F4XU7JKVR6DCJFQF7M.json","view_paper":"https://pith.science/paper/CXQVG3R7","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1503.04127&json=true","fetch_graph":"https://pith.science/api/pith-number/CXQVG3R7F4XU7JKVR6DCJFQF7M/graph.json","fetch_events":"https://pith.science/api/pith-number/CXQVG3R7F4XU7JKVR6DCJFQF7M/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/CXQVG3R7F4XU7JKVR6DCJFQF7M/action/timestamp_anchor","attest_storage":"https://pith.science/pith/CXQVG3R7F4XU7JKVR6DCJFQF7M/action/storage_attestation","attest_author":"https://pith.science/pith/CXQVG3R7F4XU7JKVR6DCJFQF7M/action/author_attestation","sign_citation":"https://pith.science/pith/CXQVG3R7F4XU7JKVR6DCJFQF7M/action/citation_signature","submit_replication":"https://pith.science/pith/CXQVG3R7F4XU7JKVR6DCJFQF7M/action/replication_record"}},"created_at":"2026-05-18T01:19:19.242543+00:00","updated_at":"2026-05-18T01:19:19.242543+00:00"}