{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:MXO5VNC3MXB47BQFSKD5LBMJOB","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":"20a0f72299cb448da279a955074e2b0c7c3ddd208c98673429c913d106fba113","cross_cats_sorted":["stat.AP"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2017-11-01T16:25:52Z","title_canon_sha256":"64e05b50cf61794b321311de7884f6d588dc18b20fab4540dcf7e6619f0da21b"},"schema_version":"1.0","source":{"id":"1711.00421","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1711.00421","created_at":"2026-05-18T00:10:32Z"},{"alias_kind":"arxiv_version","alias_value":"1711.00421v2","created_at":"2026-05-18T00:10:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1711.00421","created_at":"2026-05-18T00:10:32Z"},{"alias_kind":"pith_short_12","alias_value":"MXO5VNC3MXB4","created_at":"2026-05-18T12:31:31Z"},{"alias_kind":"pith_short_16","alias_value":"MXO5VNC3MXB47BQF","created_at":"2026-05-18T12:31:31Z"},{"alias_kind":"pith_short_8","alias_value":"MXO5VNC3","created_at":"2026-05-18T12:31:31Z"}],"graph_snapshots":[{"event_id":"sha256:5d5b2fad5f89f06b2e13bf1f2dfc5a1e92e05614aa9ef6701e9277846dd1e608","target":"graph","created_at":"2026-05-18T00:10:32Z","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 investigates the possibility of improving radio interferometric images using an algorithm inspired by an optical method known as \"lucky imaging\", which would give more weight to the best-calibrated visibilities used to make a given image. A fundamental relationship between the statistics of interferometric calibration solution residuals and those of the image-plane pixels is derived in this paper. This relationship allows us to understand and describe the statistical properties of the residual image. In this framework, the noise-map can be described as the Fourier transform of the c","authors_text":"Cyril Tasse, Etienne Bonnassieux, Oleg Smirnov, Philippe Zarka","cross_cats":["stat.AP"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2017-11-01T16:25:52Z","title":"On the variance of radio interferometric calibration solutions: Quality-based Weighting Schemes"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1711.00421","kind":"arxiv","version":2},"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:cb2719458a79339fd5dbbfe5887a56e71b2831b18b7a7bc744577e729312f0bc","target":"record","created_at":"2026-05-18T00:10:32Z","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":"20a0f72299cb448da279a955074e2b0c7c3ddd208c98673429c913d106fba113","cross_cats_sorted":["stat.AP"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2017-11-01T16:25:52Z","title_canon_sha256":"64e05b50cf61794b321311de7884f6d588dc18b20fab4540dcf7e6619f0da21b"},"schema_version":"1.0","source":{"id":"1711.00421","kind":"arxiv","version":2}},"canonical_sha256":"65dddab45b65c3cf86059287d58589706d23964f76a61fd09c6187686b8b265c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"65dddab45b65c3cf86059287d58589706d23964f76a61fd09c6187686b8b265c","first_computed_at":"2026-05-18T00:10:32.182170Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:10:32.182170Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"tQaxoj5Bt81RGNTx4xdNg0MIuj5VFr66V+UiV83EjGuGU+ytL8ZgUV7WXLrIJ+y1dVi+0BizT4LnU8XQekwhAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:10:32.182903Z","signed_message":"canonical_sha256_bytes"},"source_id":"1711.00421","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:cb2719458a79339fd5dbbfe5887a56e71b2831b18b7a7bc744577e729312f0bc","sha256:5d5b2fad5f89f06b2e13bf1f2dfc5a1e92e05614aa9ef6701e9277846dd1e608"],"state_sha256":"bc1545e7c0bdf9536458460ba84dbaf8df6837f5e272b319cf100e8a558111ef"}