{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:JCO3OOZBFWI3SFYDCOHN7IRVWC","short_pith_number":"pith:JCO3OOZB","canonical_record":{"source":{"id":"2104.03840","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"eess.IV","submitted_at":"2021-04-08T15:31:57Z","cross_cats_sorted":["cs.CV"],"title_canon_sha256":"e4668eb7969c58ab5b52daf5fbad90d790b78a6ae9a7de6b4a2bbbaaa68dbc60","abstract_canon_sha256":"f4d9a6ed02c1154b8f30822ac5b4568ea8266c291e8473858b03c97f34cadb90"},"schema_version":"1.0"},"canonical_sha256":"489db73b212d91b91703138edfa235b081ddecb895ad225781a59695da50f3cb","source":{"kind":"arxiv","id":"2104.03840","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2104.03840","created_at":"2026-07-05T02:30:24Z"},{"alias_kind":"arxiv_version","alias_value":"2104.03840v1","created_at":"2026-07-05T02:30:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2104.03840","created_at":"2026-07-05T02:30:24Z"},{"alias_kind":"pith_short_12","alias_value":"JCO3OOZBFWI3","created_at":"2026-07-05T02:30:24Z"},{"alias_kind":"pith_short_16","alias_value":"JCO3OOZBFWI3SFYD","created_at":"2026-07-05T02:30:24Z"},{"alias_kind":"pith_short_8","alias_value":"JCO3OOZB","created_at":"2026-07-05T02:30:24Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:JCO3OOZBFWI3SFYDCOHN7IRVWC","target":"record","payload":{"canonical_record":{"source":{"id":"2104.03840","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"eess.IV","submitted_at":"2021-04-08T15:31:57Z","cross_cats_sorted":["cs.CV"],"title_canon_sha256":"e4668eb7969c58ab5b52daf5fbad90d790b78a6ae9a7de6b4a2bbbaaa68dbc60","abstract_canon_sha256":"f4d9a6ed02c1154b8f30822ac5b4568ea8266c291e8473858b03c97f34cadb90"},"schema_version":"1.0"},"canonical_sha256":"489db73b212d91b91703138edfa235b081ddecb895ad225781a59695da50f3cb","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T02:30:24.070955Z","signature_b64":"B6TA8caw/ypK6tv7If/jkTn2PnzK7ph5Qj74VAS9y0WILqN1bsOv6FMCzMKcK7lyWy9TMFT1TMf65moexVY3Dw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"489db73b212d91b91703138edfa235b081ddecb895ad225781a59695da50f3cb","last_reissued_at":"2026-07-05T02:30:24.070496Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T02:30:24.070496Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2104.03840","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":"2026-07-05T02:30:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"77CN03WDWvPy7wn/Bjwy78tXZhp6wbmP3eVqz/9lyiMm6QBfIOhNHaJz1v5apYrZNwok/TaVt8e6r/ayd0Y3Bg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-10T16:25:06.756847Z"},"content_sha256":"efb9081723ef4061045e1c627bfc67af6761be8337727577c546bf87095a8dd3","schema_version":"1.0","event_id":"sha256:efb9081723ef4061045e1c627bfc67af6761be8337727577c546bf87095a8dd3"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:JCO3OOZBFWI3SFYDCOHN7IRVWC","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Uncertainty-Aware Temporal Self-Learning (UATS): Semi-Supervised Learning for Segmentation of Prostate Zones and Beyond","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","headline":"","cross_cats":["cs.CV"],"primary_cat":"eess.IV","authors_text":"Anneke Meyer, Christian Hansen, Daniel Schindele, Marko Rak, Martin Schostak, Sebastian Stober, Suhita Ghosh","submitted_at":"2021-04-08T15:31:57Z","abstract_excerpt":"Various convolutional neural network (CNN) based concepts have been introduced for the prostate's automatic segmentation and its coarse subdivision into transition zone (TZ) and peripheral zone (PZ). However, when targeting a fine-grained segmentation of TZ, PZ, distal prostatic urethra (DPU) and the anterior fibromuscular stroma (AFS), the task becomes more challenging and has not yet been solved at the level of human performance. One reason might be the insufficient amount of labeled data for supervised training. Therefore, we propose to apply a semi-supervised learning (SSL) technique named"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2104.03840","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2104.03840/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T02:30:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"bkGLr3iq6SA7tf+vAHmw+lDe6+k83864xaEhqyzfSfbjyiJqQIXQd7Hvp7mOZjqSID2L3GP8jyrg419a/hdhBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-10T16:25:06.757575Z"},"content_sha256":"266f2b8cb59f80c73a72b52273471daa332956b0725ed2e7444a84198fdd42f1","schema_version":"1.0","event_id":"sha256:266f2b8cb59f80c73a72b52273471daa332956b0725ed2e7444a84198fdd42f1"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/JCO3OOZBFWI3SFYDCOHN7IRVWC/bundle.json","state_url":"https://pith.science/pith/JCO3OOZBFWI3SFYDCOHN7IRVWC/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/JCO3OOZBFWI3SFYDCOHN7IRVWC/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":"2026-08-10T16:25:06Z","links":{"resolver":"https://pith.science/pith/JCO3OOZBFWI3SFYDCOHN7IRVWC","bundle":"https://pith.science/pith/JCO3OOZBFWI3SFYDCOHN7IRVWC/bundle.json","state":"https://pith.science/pith/JCO3OOZBFWI3SFYDCOHN7IRVWC/state.json","well_known_bundle":"https://pith.science/.well-known/pith/JCO3OOZBFWI3SFYDCOHN7IRVWC/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:JCO3OOZBFWI3SFYDCOHN7IRVWC","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":"f4d9a6ed02c1154b8f30822ac5b4568ea8266c291e8473858b03c97f34cadb90","cross_cats_sorted":["cs.CV"],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"eess.IV","submitted_at":"2021-04-08T15:31:57Z","title_canon_sha256":"e4668eb7969c58ab5b52daf5fbad90d790b78a6ae9a7de6b4a2bbbaaa68dbc60"},"schema_version":"1.0","source":{"id":"2104.03840","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2104.03840","created_at":"2026-07-05T02:30:24Z"},{"alias_kind":"arxiv_version","alias_value":"2104.03840v1","created_at":"2026-07-05T02:30:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2104.03840","created_at":"2026-07-05T02:30:24Z"},{"alias_kind":"pith_short_12","alias_value":"JCO3OOZBFWI3","created_at":"2026-07-05T02:30:24Z"},{"alias_kind":"pith_short_16","alias_value":"JCO3OOZBFWI3SFYD","created_at":"2026-07-05T02:30:24Z"},{"alias_kind":"pith_short_8","alias_value":"JCO3OOZB","created_at":"2026-07-05T02:30:24Z"}],"graph_snapshots":[{"event_id":"sha256:266f2b8cb59f80c73a72b52273471daa332956b0725ed2e7444a84198fdd42f1","target":"graph","created_at":"2026-07-05T02:30:24Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2104.03840/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Various convolutional neural network (CNN) based concepts have been introduced for the prostate's automatic segmentation and its coarse subdivision into transition zone (TZ) and peripheral zone (PZ). However, when targeting a fine-grained segmentation of TZ, PZ, distal prostatic urethra (DPU) and the anterior fibromuscular stroma (AFS), the task becomes more challenging and has not yet been solved at the level of human performance. One reason might be the insufficient amount of labeled data for supervised training. Therefore, we propose to apply a semi-supervised learning (SSL) technique named","authors_text":"Anneke Meyer, Christian Hansen, Daniel Schindele, Marko Rak, Martin Schostak, Sebastian Stober, Suhita Ghosh","cross_cats":["cs.CV"],"headline":"","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"eess.IV","submitted_at":"2021-04-08T15:31:57Z","title":"Uncertainty-Aware Temporal Self-Learning (UATS): Semi-Supervised Learning for Segmentation of Prostate Zones and Beyond"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2104.03840","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:efb9081723ef4061045e1c627bfc67af6761be8337727577c546bf87095a8dd3","target":"record","created_at":"2026-07-05T02:30:24Z","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":"f4d9a6ed02c1154b8f30822ac5b4568ea8266c291e8473858b03c97f34cadb90","cross_cats_sorted":["cs.CV"],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"eess.IV","submitted_at":"2021-04-08T15:31:57Z","title_canon_sha256":"e4668eb7969c58ab5b52daf5fbad90d790b78a6ae9a7de6b4a2bbbaaa68dbc60"},"schema_version":"1.0","source":{"id":"2104.03840","kind":"arxiv","version":1}},"canonical_sha256":"489db73b212d91b91703138edfa235b081ddecb895ad225781a59695da50f3cb","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"489db73b212d91b91703138edfa235b081ddecb895ad225781a59695da50f3cb","first_computed_at":"2026-07-05T02:30:24.070496Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:30:24.070496Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"B6TA8caw/ypK6tv7If/jkTn2PnzK7ph5Qj74VAS9y0WILqN1bsOv6FMCzMKcK7lyWy9TMFT1TMf65moexVY3Dw==","signature_status":"signed_v1","signed_at":"2026-07-05T02:30:24.070955Z","signed_message":"canonical_sha256_bytes"},"source_id":"2104.03840","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:efb9081723ef4061045e1c627bfc67af6761be8337727577c546bf87095a8dd3","sha256:266f2b8cb59f80c73a72b52273471daa332956b0725ed2e7444a84198fdd42f1"],"state_sha256":"63fdc248e367d86d52b3623b1dfd4810b2d2b97dfc71039bc947bce3d7822fc7"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"EcB6JRD5rWcAX0svHFQlo9BpvMNCvbrV5cfqZpUS7V+iWwzvu3LIIfvSkPY8sFN39re51ABfUYOtJAtqOmZ/Bg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-10T16:25:06.765139Z","bundle_sha256":"8b7b2972b2eab253e1efd17095f6ee327513f173198ed3a4db23682dbe96eed7"}}