{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:ZGFEZK7L2NJBBBD4S6ZWT3OQSF","short_pith_number":"pith:ZGFEZK7L","canonical_record":{"source":{"id":"1906.11675","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2019-06-26T16:42:19Z","cross_cats_sorted":[],"title_canon_sha256":"91a9a2cd5a2e01718a8c817e6b1a594d8102212ce9267b8c338f16c3d5efcce3","abstract_canon_sha256":"c58713b934246daaf43d314270f5ae20fb8751a8f808322f6c5691e2cc53f425"},"schema_version":"1.0"},"canonical_sha256":"c98a4cabebd35210847c97b369edd09143c581e3c83814e289e8ada9cb5d7bd7","source":{"kind":"arxiv","id":"1906.11675","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1906.11675","created_at":"2026-05-17T23:42:04Z"},{"alias_kind":"arxiv_version","alias_value":"1906.11675v1","created_at":"2026-05-17T23:42:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1906.11675","created_at":"2026-05-17T23:42:04Z"},{"alias_kind":"pith_short_12","alias_value":"ZGFEZK7L2NJB","created_at":"2026-05-18T12:33:33Z"},{"alias_kind":"pith_short_16","alias_value":"ZGFEZK7L2NJBBBD4","created_at":"2026-05-18T12:33:33Z"},{"alias_kind":"pith_short_8","alias_value":"ZGFEZK7L","created_at":"2026-05-18T12:33:33Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:ZGFEZK7L2NJBBBD4S6ZWT3OQSF","target":"record","payload":{"canonical_record":{"source":{"id":"1906.11675","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2019-06-26T16:42:19Z","cross_cats_sorted":[],"title_canon_sha256":"91a9a2cd5a2e01718a8c817e6b1a594d8102212ce9267b8c338f16c3d5efcce3","abstract_canon_sha256":"c58713b934246daaf43d314270f5ae20fb8751a8f808322f6c5691e2cc53f425"},"schema_version":"1.0"},"canonical_sha256":"c98a4cabebd35210847c97b369edd09143c581e3c83814e289e8ada9cb5d7bd7","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:42:04.120634Z","signature_b64":"XdCj9ERRdzjPTEtmVmiWFa3IBuH699N4WSKZe7V86y0GQc6HYkqGbOp1jQPfFYeXFPrqCM4Icxz2CJm4jshVDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c98a4cabebd35210847c97b369edd09143c581e3c83814e289e8ada9cb5d7bd7","last_reissued_at":"2026-05-17T23:42:04.120014Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:42:04.120014Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1906.11675","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":"2026-05-17T23:42:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"rAxPHFtnbXQVRjCD5GHCCmQ6qJsardtxdCZe8wqECowKrjxI2m7hT2GM1HM6BfTjVQdIMPEvcXRjgxjkdQXvDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T17:55:13.575356Z"},"content_sha256":"9ee07a652c75c09bfe4c608cbbfc65855058aaea58960c31ccc6111f0576c675","schema_version":"1.0","event_id":"sha256:9ee07a652c75c09bfe4c608cbbfc65855058aaea58960c31ccc6111f0576c675"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:ZGFEZK7L2NJBBBD4S6ZWT3OQSF","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Detection of small changes in medical and random-dot images comparing self-organizing map performance to human detection","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.CV","authors_text":"Birgitta Dresp-Langley, Henry Nyongesa, John Wandeto, Yves Remond","submitted_at":"2019-06-26T16:42:19Z","abstract_excerpt":"Radiologists use time series of medical images to monitor the progression of a patient condition. They compare information gleaned from sequences of images to gain insight on progression or remission of the lesions, thus evaluating the progress of a patient condition or response to therapy. Visual methods of determining differences between one series of images to another can be subjective or fail to detect very small differences. We propose the use of quantization errors obtained from Self Organizing Maps for image content analysis. We tested this technique with MRI images to which we progress"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1906.11675","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":"2026-05-17T23:42:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"dw3hjydl8xf8kTfZvKDzYq20LB2zWc2RJNCb6Y4Uevm7jtzVtJkMm9+equOKWUmTmZF4s/n3BaVanWm+nBzEDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T17:55:13.575942Z"},"content_sha256":"fa85f213ac959a9423218b2eb39973efb992413d334604f70eed2d4667381c76","schema_version":"1.0","event_id":"sha256:fa85f213ac959a9423218b2eb39973efb992413d334604f70eed2d4667381c76"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ZGFEZK7L2NJBBBD4S6ZWT3OQSF/bundle.json","state_url":"https://pith.science/pith/ZGFEZK7L2NJBBBD4S6ZWT3OQSF/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ZGFEZK7L2NJBBBD4S6ZWT3OQSF/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":"2026-06-05T17:55:13Z","links":{"resolver":"https://pith.science/pith/ZGFEZK7L2NJBBBD4S6ZWT3OQSF","bundle":"https://pith.science/pith/ZGFEZK7L2NJBBBD4S6ZWT3OQSF/bundle.json","state":"https://pith.science/pith/ZGFEZK7L2NJBBBD4S6ZWT3OQSF/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ZGFEZK7L2NJBBBD4S6ZWT3OQSF/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:ZGFEZK7L2NJBBBD4S6ZWT3OQSF","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":"c58713b934246daaf43d314270f5ae20fb8751a8f808322f6c5691e2cc53f425","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2019-06-26T16:42:19Z","title_canon_sha256":"91a9a2cd5a2e01718a8c817e6b1a594d8102212ce9267b8c338f16c3d5efcce3"},"schema_version":"1.0","source":{"id":"1906.11675","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1906.11675","created_at":"2026-05-17T23:42:04Z"},{"alias_kind":"arxiv_version","alias_value":"1906.11675v1","created_at":"2026-05-17T23:42:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1906.11675","created_at":"2026-05-17T23:42:04Z"},{"alias_kind":"pith_short_12","alias_value":"ZGFEZK7L2NJB","created_at":"2026-05-18T12:33:33Z"},{"alias_kind":"pith_short_16","alias_value":"ZGFEZK7L2NJBBBD4","created_at":"2026-05-18T12:33:33Z"},{"alias_kind":"pith_short_8","alias_value":"ZGFEZK7L","created_at":"2026-05-18T12:33:33Z"}],"graph_snapshots":[{"event_id":"sha256:fa85f213ac959a9423218b2eb39973efb992413d334604f70eed2d4667381c76","target":"graph","created_at":"2026-05-17T23:42:04Z","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":"Radiologists use time series of medical images to monitor the progression of a patient condition. They compare information gleaned from sequences of images to gain insight on progression or remission of the lesions, thus evaluating the progress of a patient condition or response to therapy. Visual methods of determining differences between one series of images to another can be subjective or fail to detect very small differences. We propose the use of quantization errors obtained from Self Organizing Maps for image content analysis. We tested this technique with MRI images to which we progress","authors_text":"Birgitta Dresp-Langley, Henry Nyongesa, John Wandeto, Yves Remond","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2019-06-26T16:42:19Z","title":"Detection of small changes in medical and random-dot images comparing self-organizing map performance to human detection"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1906.11675","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":"sha256:9ee07a652c75c09bfe4c608cbbfc65855058aaea58960c31ccc6111f0576c675","target":"record","created_at":"2026-05-17T23:42:04Z","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":"c58713b934246daaf43d314270f5ae20fb8751a8f808322f6c5691e2cc53f425","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2019-06-26T16:42:19Z","title_canon_sha256":"91a9a2cd5a2e01718a8c817e6b1a594d8102212ce9267b8c338f16c3d5efcce3"},"schema_version":"1.0","source":{"id":"1906.11675","kind":"arxiv","version":1}},"canonical_sha256":"c98a4cabebd35210847c97b369edd09143c581e3c83814e289e8ada9cb5d7bd7","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c98a4cabebd35210847c97b369edd09143c581e3c83814e289e8ada9cb5d7bd7","first_computed_at":"2026-05-17T23:42:04.120014Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:42:04.120014Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"XdCj9ERRdzjPTEtmVmiWFa3IBuH699N4WSKZe7V86y0GQc6HYkqGbOp1jQPfFYeXFPrqCM4Icxz2CJm4jshVDg==","signature_status":"signed_v1","signed_at":"2026-05-17T23:42:04.120634Z","signed_message":"canonical_sha256_bytes"},"source_id":"1906.11675","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9ee07a652c75c09bfe4c608cbbfc65855058aaea58960c31ccc6111f0576c675","sha256:fa85f213ac959a9423218b2eb39973efb992413d334604f70eed2d4667381c76"],"state_sha256":"8c904ea2bf467d08752722cc808b6826685dfb13b886c5806a7928abdf4c3cc4"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"nq/nCdfoJ8eoKbSWku85a835duDQWriwLa3bSmTJRIgGJSwIxWwUFHtvmMCSw8V7lzXXM+ghLLfEKcxknW8lDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-05T17:55:13.578832Z","bundle_sha256":"70078fbe250ef8cee948295b9d9a3f988dcae7166546661a820e57e29e194f5c"}}