{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:65BKFXKU6GUFOXDHMAA2N6G77L","short_pith_number":"pith:65BKFXKU","canonical_record":{"source":{"id":"2106.04463","kind":"arxiv","version":3},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"eess.IV","submitted_at":"2021-06-08T15:48:17Z","cross_cats_sorted":["cs.CV","cs.LG"],"title_canon_sha256":"0883c540f544585e34e99e33fc51f25520e8403a6af97a3899ee852e70f99d47","abstract_canon_sha256":"e69dd2dd95cc6d870ece9bfc802c795e6328df76d4cbfc328d98318a7f733e25"},"schema_version":"1.0"},"canonical_sha256":"f742a2dd54f1a8575c676001a6f8dffadb47496e32617a0f015c2db9cfbe9b2c","source":{"kind":"arxiv","id":"2106.04463","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2106.04463","created_at":"2026-07-05T06:11:41Z"},{"alias_kind":"arxiv_version","alias_value":"2106.04463v3","created_at":"2026-07-05T06:11:41Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2106.04463","created_at":"2026-07-05T06:11:41Z"},{"alias_kind":"pith_short_12","alias_value":"65BKFXKU6GUF","created_at":"2026-07-05T06:11:41Z"},{"alias_kind":"pith_short_16","alias_value":"65BKFXKU6GUFOXDH","created_at":"2026-07-05T06:11:41Z"},{"alias_kind":"pith_short_8","alias_value":"65BKFXKU","created_at":"2026-07-05T06:11:41Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:65BKFXKU6GUFOXDHMAA2N6G77L","target":"record","payload":{"canonical_record":{"source":{"id":"2106.04463","kind":"arxiv","version":3},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"eess.IV","submitted_at":"2021-06-08T15:48:17Z","cross_cats_sorted":["cs.CV","cs.LG"],"title_canon_sha256":"0883c540f544585e34e99e33fc51f25520e8403a6af97a3899ee852e70f99d47","abstract_canon_sha256":"e69dd2dd95cc6d870ece9bfc802c795e6328df76d4cbfc328d98318a7f733e25"},"schema_version":"1.0"},"canonical_sha256":"f742a2dd54f1a8575c676001a6f8dffadb47496e32617a0f015c2db9cfbe9b2c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T06:11:41.332526Z","signature_b64":"szBUlvy7GUHMZfj6uV+uQWrIcCYntSuwQg32YshFy941AzH7K5hGApIqU3XUZGqhhGpWbvORPR/Flo9yZKmlCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f742a2dd54f1a8575c676001a6f8dffadb47496e32617a0f015c2db9cfbe9b2c","last_reissued_at":"2026-07-05T06:11:41.331997Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T06:11:41.331997Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2106.04463","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T06:11:41Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"saKznonnPLQexl5NWkWJey8iY+n45qSbv9TpPBx/NX6rr3Ed/2qDtYsSU5/PwplrEDfXvMRrHXDtYQeawaCnDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T07:46:58.471799Z"},"content_sha256":"caff3c4226d326a89a6bf9c403096244d2480429a83b33c9ca43f2894aa85268","schema_version":"1.0","event_id":"sha256:caff3c4226d326a89a6bf9c403096244d2480429a83b33c9ca43f2894aa85268"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:65BKFXKU6GUFOXDHMAA2N6G77L","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A multi-centre polyp detection and segmentation dataset for generalisability assessment","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["cs.CV","cs.LG"],"primary_cat":"eess.IV","authors_text":"Andreas Petlund, Christian Daul, Debesh Jha, Dominique Lamarque, James E. East, Jens Rittscher, Kim V. Anonsen, Michael A. Riegler, Noha Ghatwary, Osama E. Salem, P{\\aa}l Halvorsen, Renato Cannizzaro, Sharib Ali, Stefano Realdon, Thomas de Lange","submitted_at":"2021-06-08T15:48:17Z","abstract_excerpt":"Polyps in the colon are widely known cancer precursors identified by colonoscopy. Whilst most polyps are benign, the polyp's number, size and surface structure are linked to the risk of colon cancer. Several methods have been developed to automate polyp detection and segmentation. However, the main issue is that they are not tested rigorously on a large multicentre purpose-built dataset, one reason being the lack of a comprehensive public dataset. As a result, the developed methods may not generalise to different population datasets. To this extent, we have curated a dataset from six unique ce"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2106.04463","kind":"arxiv","version":3},"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/2106.04463/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":"2026-07-05T06:11:41Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"lbl4x3id4dV2W3ujeet5gVHZ95jg9KqEWK1/MZPmPScx2izZ7rE9QoEVK6YYEI7bVo1pg9wdOEL+8YH9WsLCAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T07:46:58.472190Z"},"content_sha256":"4aa4e8bdf5df277a8e08fe3f4db41c34e35a9cd099f8f5c0a0a4011c2eb9b579","schema_version":"1.0","event_id":"sha256:4aa4e8bdf5df277a8e08fe3f4db41c34e35a9cd099f8f5c0a0a4011c2eb9b579"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/65BKFXKU6GUFOXDHMAA2N6G77L/bundle.json","state_url":"https://pith.science/pith/65BKFXKU6GUFOXDHMAA2N6G77L/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/65BKFXKU6GUFOXDHMAA2N6G77L/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":"2026-07-07T07:46:58Z","links":{"resolver":"https://pith.science/pith/65BKFXKU6GUFOXDHMAA2N6G77L","bundle":"https://pith.science/pith/65BKFXKU6GUFOXDHMAA2N6G77L/bundle.json","state":"https://pith.science/pith/65BKFXKU6GUFOXDHMAA2N6G77L/state.json","well_known_bundle":"https://pith.science/.well-known/pith/65BKFXKU6GUFOXDHMAA2N6G77L/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:65BKFXKU6GUFOXDHMAA2N6G77L","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":"e69dd2dd95cc6d870ece9bfc802c795e6328df76d4cbfc328d98318a7f733e25","cross_cats_sorted":["cs.CV","cs.LG"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"eess.IV","submitted_at":"2021-06-08T15:48:17Z","title_canon_sha256":"0883c540f544585e34e99e33fc51f25520e8403a6af97a3899ee852e70f99d47"},"schema_version":"1.0","source":{"id":"2106.04463","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2106.04463","created_at":"2026-07-05T06:11:41Z"},{"alias_kind":"arxiv_version","alias_value":"2106.04463v3","created_at":"2026-07-05T06:11:41Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2106.04463","created_at":"2026-07-05T06:11:41Z"},{"alias_kind":"pith_short_12","alias_value":"65BKFXKU6GUF","created_at":"2026-07-05T06:11:41Z"},{"alias_kind":"pith_short_16","alias_value":"65BKFXKU6GUFOXDH","created_at":"2026-07-05T06:11:41Z"},{"alias_kind":"pith_short_8","alias_value":"65BKFXKU","created_at":"2026-07-05T06:11:41Z"}],"graph_snapshots":[{"event_id":"sha256:4aa4e8bdf5df277a8e08fe3f4db41c34e35a9cd099f8f5c0a0a4011c2eb9b579","target":"graph","created_at":"2026-07-05T06:11:41Z","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/2106.04463/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Polyps in the colon are widely known cancer precursors identified by colonoscopy. Whilst most polyps are benign, the polyp's number, size and surface structure are linked to the risk of colon cancer. Several methods have been developed to automate polyp detection and segmentation. However, the main issue is that they are not tested rigorously on a large multicentre purpose-built dataset, one reason being the lack of a comprehensive public dataset. As a result, the developed methods may not generalise to different population datasets. To this extent, we have curated a dataset from six unique ce","authors_text":"Andreas Petlund, Christian Daul, Debesh Jha, Dominique Lamarque, James E. East, Jens Rittscher, Kim V. Anonsen, Michael A. Riegler, Noha Ghatwary, Osama E. Salem, P{\\aa}l Halvorsen, Renato Cannizzaro, Sharib Ali, Stefano Realdon, Thomas de Lange","cross_cats":["cs.CV","cs.LG"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"eess.IV","submitted_at":"2021-06-08T15:48:17Z","title":"A multi-centre polyp detection and segmentation dataset for generalisability assessment"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2106.04463","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:caff3c4226d326a89a6bf9c403096244d2480429a83b33c9ca43f2894aa85268","target":"record","created_at":"2026-07-05T06:11:41Z","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":"e69dd2dd95cc6d870ece9bfc802c795e6328df76d4cbfc328d98318a7f733e25","cross_cats_sorted":["cs.CV","cs.LG"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"eess.IV","submitted_at":"2021-06-08T15:48:17Z","title_canon_sha256":"0883c540f544585e34e99e33fc51f25520e8403a6af97a3899ee852e70f99d47"},"schema_version":"1.0","source":{"id":"2106.04463","kind":"arxiv","version":3}},"canonical_sha256":"f742a2dd54f1a8575c676001a6f8dffadb47496e32617a0f015c2db9cfbe9b2c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f742a2dd54f1a8575c676001a6f8dffadb47496e32617a0f015c2db9cfbe9b2c","first_computed_at":"2026-07-05T06:11:41.331997Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T06:11:41.331997Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"szBUlvy7GUHMZfj6uV+uQWrIcCYntSuwQg32YshFy941AzH7K5hGApIqU3XUZGqhhGpWbvORPR/Flo9yZKmlCg==","signature_status":"signed_v1","signed_at":"2026-07-05T06:11:41.332526Z","signed_message":"canonical_sha256_bytes"},"source_id":"2106.04463","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:caff3c4226d326a89a6bf9c403096244d2480429a83b33c9ca43f2894aa85268","sha256:4aa4e8bdf5df277a8e08fe3f4db41c34e35a9cd099f8f5c0a0a4011c2eb9b579"],"state_sha256":"e90476cc252e71447ce228f26fc1ef34f92d432b0cfc38aa5e8fd79504c86192"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"iaP8GIKBFN8c+P3YMTpOV8rhioktWYQiA6cdEviA3hn03LR38tM1AbWeHTmCmrBwQNvkrwruoTnmD3hou9I1Dw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-07T07:46:58.474496Z","bundle_sha256":"f9c224ef1b909b4685d47d677a8d641b73a03578850567d0bf7eb7f5617183af"}}