{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:LCCXODOUPHHGRKL4VM53Z46DH2","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":"19ed67fc4029b6c62cab3b7250d71f0ec448a456d8ee5d73587106eab93983a0","cross_cats_sorted":["stat.ME"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2014-04-18T20:19:02Z","title_canon_sha256":"67ef6cc52cadc6ed3d5ec7ae3018b30f06bd46bb9e14b08739bdd42d4315df5d"},"schema_version":"1.0","source":{"id":"1404.4880","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1404.4880","created_at":"2026-05-18T02:53:52Z"},{"alias_kind":"arxiv_version","alias_value":"1404.4880v1","created_at":"2026-05-18T02:53:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1404.4880","created_at":"2026-05-18T02:53:52Z"},{"alias_kind":"pith_short_12","alias_value":"LCCXODOUPHHG","created_at":"2026-05-18T12:28:35Z"},{"alias_kind":"pith_short_16","alias_value":"LCCXODOUPHHGRKL4","created_at":"2026-05-18T12:28:35Z"},{"alias_kind":"pith_short_8","alias_value":"LCCXODOU","created_at":"2026-05-18T12:28:35Z"}],"graph_snapshots":[{"event_id":"sha256:fa4849e8741a1987126f9284279448f8cbf8e0449c36458cbe29f70a2eb11526","target":"graph","created_at":"2026-05-18T02:53:52Z","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":"This paper proposes improved methods for the maximum likelihood (ML) estimation of the equivalent number of looks $L$. This parameter has a meaningful interpretation in the context of polarimetric synthetic aperture radar (PolSAR) images. Due to the presence of coherent illumination in their processing, PolSAR systems generate images which present a granular noise called speckle. As a potential solution for reducing such interference, the parameter $L$ controls the signal-noise ratio. Thus, the proposal of efficient estimation methodologies for $L$ has been sought. To that end, we consider fir","authors_text":"Abra\\~ao D. C. Nascimento, Alejandro C. Frery, Renato J. Cintra","cross_cats":["stat.ME"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2014-04-18T20:19:02Z","title":"Bias Correction and Modified Profile Likelihood under the Wishart Complex Distribution"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1404.4880","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:e18f1dee79a40e7aa131bbd4c3a0db517fd8b5e72cb7534607d1030c59ac9ec8","target":"record","created_at":"2026-05-18T02:53:52Z","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":"19ed67fc4029b6c62cab3b7250d71f0ec448a456d8ee5d73587106eab93983a0","cross_cats_sorted":["stat.ME"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2014-04-18T20:19:02Z","title_canon_sha256":"67ef6cc52cadc6ed3d5ec7ae3018b30f06bd46bb9e14b08739bdd42d4315df5d"},"schema_version":"1.0","source":{"id":"1404.4880","kind":"arxiv","version":1}},"canonical_sha256":"5885770dd479ce68a97cab3bbcf3c33e9c747bd2b2424df18d1e6bd841ee2d11","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"5885770dd479ce68a97cab3bbcf3c33e9c747bd2b2424df18d1e6bd841ee2d11","first_computed_at":"2026-05-18T02:53:52.780204Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:53:52.780204Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"M0SR7wZBWcHp2fHIySXiugdQiomDLe5/LM58cLUlWPWu7MLTbRsEu/FvAvQxorNHdGz4bF9hrb3nqBJsST9/AQ==","signature_status":"signed_v1","signed_at":"2026-05-18T02:53:52.781045Z","signed_message":"canonical_sha256_bytes"},"source_id":"1404.4880","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e18f1dee79a40e7aa131bbd4c3a0db517fd8b5e72cb7534607d1030c59ac9ec8","sha256:fa4849e8741a1987126f9284279448f8cbf8e0449c36458cbe29f70a2eb11526"],"state_sha256":"b2423ee34c25ea3727257d9eb55ebe77c8c09857feb49fb35eb1480020f103ad"}