{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:3DGXLRALWHMLMN6PHAVEIK23IS","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":"396cc17e729cfd679bb14fedd29de710dc3fa00a9e0b777b0eb48cb45e017f83","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2014-01-20T17:09:03Z","title_canon_sha256":"77a41388ef36f2ccb796be6dfe2ab79089985e027993f7f1658e87007ea69ce6"},"schema_version":"1.0","source":{"id":"1401.4984","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1401.4984","created_at":"2026-05-18T01:45:18Z"},{"alias_kind":"arxiv_version","alias_value":"1401.4984v3","created_at":"2026-05-18T01:45:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1401.4984","created_at":"2026-05-18T01:45:18Z"},{"alias_kind":"pith_short_12","alias_value":"3DGXLRALWHML","created_at":"2026-05-18T12:28:11Z"},{"alias_kind":"pith_short_16","alias_value":"3DGXLRALWHMLMN6P","created_at":"2026-05-18T12:28:11Z"},{"alias_kind":"pith_short_8","alias_value":"3DGXLRAL","created_at":"2026-05-18T12:28:11Z"}],"graph_snapshots":[{"event_id":"sha256:a5a0e8a0d85778ee81c2b0c20a2f6919489902886d4c197ad378456b76109ceb","target":"graph","created_at":"2026-05-18T01:45:18Z","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":"The analysis of astronomical interferometric data is often performed on the images obtained after deconvolution of the interferometer's point spread function (PSF). This strategy can be understood (especially for cases of sparse arrays) as fitting models to models, since the deconvolved images are already non-unique model representations of the actual data (i.e., the visibilities). Indeed, the interferometric images may be affected by visibility gridding, weighting schemes (e.g., natural vs. uniform), and the particulars of the (non-linear) deconvolution algorithms. Fitting models to the direc","authors_text":"I. Marti-Vidal, S. Casey, S. Muller, W. H. T. Vlemmings","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2014-01-20T17:09:03Z","title":"UVMULTIFIT: A versatile tool for fitting astronomical radio interferometric data"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1401.4984","kind":"arxiv","version":3},"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":"sha256:03cf450f4a6e0f28f4e9e83deb4423c2400f6839e277cab32c25377ec42b7813","target":"record","created_at":"2026-05-18T01:45:18Z","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":"396cc17e729cfd679bb14fedd29de710dc3fa00a9e0b777b0eb48cb45e017f83","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2014-01-20T17:09:03Z","title_canon_sha256":"77a41388ef36f2ccb796be6dfe2ab79089985e027993f7f1658e87007ea69ce6"},"schema_version":"1.0","source":{"id":"1401.4984","kind":"arxiv","version":3}},"canonical_sha256":"d8cd75c40bb1d8b637cf382a442b5b44b20cd15e4b6c037b7d7337b62f10381d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d8cd75c40bb1d8b637cf382a442b5b44b20cd15e4b6c037b7d7337b62f10381d","first_computed_at":"2026-05-18T01:45:18.915359Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:45:18.915359Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"XARWwMi5C3FKeSw2a8JroARYPTIgTYuHyMnr2vlonwthcxtJZM48+c/Xlm27WQ79jnsEkuuR5nnU3XW51U+JCw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:45:18.915800Z","signed_message":"canonical_sha256_bytes"},"source_id":"1401.4984","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:03cf450f4a6e0f28f4e9e83deb4423c2400f6839e277cab32c25377ec42b7813","sha256:a5a0e8a0d85778ee81c2b0c20a2f6919489902886d4c197ad378456b76109ceb"],"state_sha256":"1b359f921ff17703ebf8bd17d044e8e26c2698c668ff181ba94343acf2f985b4"}