{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:NPWOZXZJQ46GC3KC7ZPPZ5MKW3","short_pith_number":"pith:NPWOZXZJ","canonical_record":{"source":{"id":"1902.00608","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"stat.CO","submitted_at":"2019-02-02T01:14:58Z","cross_cats_sorted":["eess.IV"],"title_canon_sha256":"540ffd8044ecd1f2249a45793e813270d42005a358c9e7572fa7dbb6e0c8eb40","abstract_canon_sha256":"e47181ee39a9f1e585fcd90224d9936829e6d8171dcdab1595c4f56a9972cfc8"},"schema_version":"1.0"},"canonical_sha256":"6bececdf29873c616d42fe5efcf58ab6fea082c8fd4321f1d9d33958ed1af59e","source":{"kind":"arxiv","id":"1902.00608","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1902.00608","created_at":"2026-05-17T23:54:52Z"},{"alias_kind":"arxiv_version","alias_value":"1902.00608v1","created_at":"2026-05-17T23:54:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1902.00608","created_at":"2026-05-17T23:54:52Z"},{"alias_kind":"pith_short_12","alias_value":"NPWOZXZJQ46G","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_16","alias_value":"NPWOZXZJQ46GC3KC","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_8","alias_value":"NPWOZXZJ","created_at":"2026-05-18T12:33:24Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:NPWOZXZJQ46GC3KC7ZPPZ5MKW3","target":"record","payload":{"canonical_record":{"source":{"id":"1902.00608","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"stat.CO","submitted_at":"2019-02-02T01:14:58Z","cross_cats_sorted":["eess.IV"],"title_canon_sha256":"540ffd8044ecd1f2249a45793e813270d42005a358c9e7572fa7dbb6e0c8eb40","abstract_canon_sha256":"e47181ee39a9f1e585fcd90224d9936829e6d8171dcdab1595c4f56a9972cfc8"},"schema_version":"1.0"},"canonical_sha256":"6bececdf29873c616d42fe5efcf58ab6fea082c8fd4321f1d9d33958ed1af59e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:54:52.707479Z","signature_b64":"WYsTHK8y7l05sdSEl94+CgrFKEb45njTDMu6zR0jUxJQEG2RN+cA7suZYDpnqRa0FlcdzTzwjN/xpa7dYsXNDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6bececdf29873c616d42fe5efcf58ab6fea082c8fd4321f1d9d33958ed1af59e","last_reissued_at":"2026-05-17T23:54:52.706989Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:54:52.706989Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1902.00608","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-17T23:54:52Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hTB3Do5sx0d5LGIHAl90WdhLENEF90r1qOJwVKwuvC0o5uzNtYb6Bu32rqEXmO4F7Xd8kiA1K/VR+A2MPsxPBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T19:20:23.181672Z"},"content_sha256":"f67eb553f1d2b25111e18a515a6bd47fb2ad577ddab60a2b3069ff2f888b9665","schema_version":"1.0","event_id":"sha256:f67eb553f1d2b25111e18a515a6bd47fb2ad577ddab60a2b3069ff2f888b9665"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:NPWOZXZJQ46GC3KC7ZPPZ5MKW3","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Methods of interpreting error estimates for grayscale image reconstructions","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["eess.IV"],"primary_cat":"stat.CO","authors_text":"Aaron Defazio, Mark Tygert","submitted_at":"2019-02-02T01:14:58Z","abstract_excerpt":"One representation of possible errors in a grayscale image reconstruction is as another grayscale image estimating potentially worrisome differences between the reconstruction and the actual \"ground-truth\" reality. Visualizations and summary statistics can aid in the interpretation of such a representation of error estimates. Visualizations include suitable colorizations of the reconstruction, as well as the obvious \"correction\" of the reconstruction by subtracting off the error estimates. The canonical summary statistic would be the root-mean-square of the error estimates. Numerical examples "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1902.00608","kind":"arxiv","version":1},"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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-17T23:54:52Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"s2usajwvVhNkCXgIlNjNFYJIC6QinU/UGhvdTOZ503ukCuWw+Fb1zFdKnn1q3BvrjJlhkgGs68yZ5jJXcylxAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T19:20:23.182600Z"},"content_sha256":"abe530a5a566b2b7fa4a233083093fb18bbf36376443a0d75e8cf772790d208e","schema_version":"1.0","event_id":"sha256:abe530a5a566b2b7fa4a233083093fb18bbf36376443a0d75e8cf772790d208e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/NPWOZXZJQ46GC3KC7ZPPZ5MKW3/bundle.json","state_url":"https://pith.science/pith/NPWOZXZJQ46GC3KC7ZPPZ5MKW3/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/NPWOZXZJQ46GC3KC7ZPPZ5MKW3/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-06-05T19:20:23Z","links":{"resolver":"https://pith.science/pith/NPWOZXZJQ46GC3KC7ZPPZ5MKW3","bundle":"https://pith.science/pith/NPWOZXZJQ46GC3KC7ZPPZ5MKW3/bundle.json","state":"https://pith.science/pith/NPWOZXZJQ46GC3KC7ZPPZ5MKW3/state.json","well_known_bundle":"https://pith.science/.well-known/pith/NPWOZXZJQ46GC3KC7ZPPZ5MKW3/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:NPWOZXZJQ46GC3KC7ZPPZ5MKW3","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":"e47181ee39a9f1e585fcd90224d9936829e6d8171dcdab1595c4f56a9972cfc8","cross_cats_sorted":["eess.IV"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"stat.CO","submitted_at":"2019-02-02T01:14:58Z","title_canon_sha256":"540ffd8044ecd1f2249a45793e813270d42005a358c9e7572fa7dbb6e0c8eb40"},"schema_version":"1.0","source":{"id":"1902.00608","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1902.00608","created_at":"2026-05-17T23:54:52Z"},{"alias_kind":"arxiv_version","alias_value":"1902.00608v1","created_at":"2026-05-17T23:54:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1902.00608","created_at":"2026-05-17T23:54:52Z"},{"alias_kind":"pith_short_12","alias_value":"NPWOZXZJQ46G","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_16","alias_value":"NPWOZXZJQ46GC3KC","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_8","alias_value":"NPWOZXZJ","created_at":"2026-05-18T12:33:24Z"}],"graph_snapshots":[{"event_id":"sha256:abe530a5a566b2b7fa4a233083093fb18bbf36376443a0d75e8cf772790d208e","target":"graph","created_at":"2026-05-17T23:54:52Z","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":"One representation of possible errors in a grayscale image reconstruction is as another grayscale image estimating potentially worrisome differences between the reconstruction and the actual \"ground-truth\" reality. Visualizations and summary statistics can aid in the interpretation of such a representation of error estimates. Visualizations include suitable colorizations of the reconstruction, as well as the obvious \"correction\" of the reconstruction by subtracting off the error estimates. The canonical summary statistic would be the root-mean-square of the error estimates. Numerical examples ","authors_text":"Aaron Defazio, Mark Tygert","cross_cats":["eess.IV"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"stat.CO","submitted_at":"2019-02-02T01:14:58Z","title":"Methods of interpreting error estimates for grayscale image reconstructions"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1902.00608","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:f67eb553f1d2b25111e18a515a6bd47fb2ad577ddab60a2b3069ff2f888b9665","target":"record","created_at":"2026-05-17T23:54:52Z","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":"e47181ee39a9f1e585fcd90224d9936829e6d8171dcdab1595c4f56a9972cfc8","cross_cats_sorted":["eess.IV"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"stat.CO","submitted_at":"2019-02-02T01:14:58Z","title_canon_sha256":"540ffd8044ecd1f2249a45793e813270d42005a358c9e7572fa7dbb6e0c8eb40"},"schema_version":"1.0","source":{"id":"1902.00608","kind":"arxiv","version":1}},"canonical_sha256":"6bececdf29873c616d42fe5efcf58ab6fea082c8fd4321f1d9d33958ed1af59e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6bececdf29873c616d42fe5efcf58ab6fea082c8fd4321f1d9d33958ed1af59e","first_computed_at":"2026-05-17T23:54:52.706989Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:54:52.706989Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"WYsTHK8y7l05sdSEl94+CgrFKEb45njTDMu6zR0jUxJQEG2RN+cA7suZYDpnqRa0FlcdzTzwjN/xpa7dYsXNDw==","signature_status":"signed_v1","signed_at":"2026-05-17T23:54:52.707479Z","signed_message":"canonical_sha256_bytes"},"source_id":"1902.00608","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f67eb553f1d2b25111e18a515a6bd47fb2ad577ddab60a2b3069ff2f888b9665","sha256:abe530a5a566b2b7fa4a233083093fb18bbf36376443a0d75e8cf772790d208e"],"state_sha256":"ad93c3a6d6f57d2b556cd866ee2100b07ca84320717d937e1d066a9af1545837"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"pKpSMyuRVRAnyz9Lm9YCtBdWQkCvSKzxhiE/AQfd3O4YvKMGqQmSEYVkX8Jk0FOP7e3Pq4tePWQdHgkU9R05CQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-05T19:20:23.186674Z","bundle_sha256":"c80960a03762c2e10678e16bef39b5b1e15326ab02a591ec810d99031d7b79ca"}}