{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:YXUSXRJSSNIRIGFCA4TIB6A5KF","short_pith_number":"pith:YXUSXRJS","canonical_record":{"source":{"id":"2007.01001","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.IV","submitted_at":"2020-07-02T10:23:57Z","cross_cats_sorted":["cs.CV","cs.NE"],"title_canon_sha256":"743fec834a1a1c8c6b227dae737d11055731b2e7c6512b26e0f172280cb2aa60","abstract_canon_sha256":"1262ee973e8d4346834c35109fc4ceea082078a7f0e4281f66b58908604891df"},"schema_version":"1.0"},"canonical_sha256":"c5e92bc53293511418a2072680f81d517bcce4b0349589aabfbe7e0e30d89398","source":{"kind":"arxiv","id":"2007.01001","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2007.01001","created_at":"2026-07-05T01:15:43Z"},{"alias_kind":"arxiv_version","alias_value":"2007.01001v1","created_at":"2026-07-05T01:15:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2007.01001","created_at":"2026-07-05T01:15:43Z"},{"alias_kind":"pith_short_12","alias_value":"YXUSXRJSSNIR","created_at":"2026-07-05T01:15:43Z"},{"alias_kind":"pith_short_16","alias_value":"YXUSXRJSSNIRIGFC","created_at":"2026-07-05T01:15:43Z"},{"alias_kind":"pith_short_8","alias_value":"YXUSXRJS","created_at":"2026-07-05T01:15:43Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:YXUSXRJSSNIRIGFCA4TIB6A5KF","target":"record","payload":{"canonical_record":{"source":{"id":"2007.01001","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.IV","submitted_at":"2020-07-02T10:23:57Z","cross_cats_sorted":["cs.CV","cs.NE"],"title_canon_sha256":"743fec834a1a1c8c6b227dae737d11055731b2e7c6512b26e0f172280cb2aa60","abstract_canon_sha256":"1262ee973e8d4346834c35109fc4ceea082078a7f0e4281f66b58908604891df"},"schema_version":"1.0"},"canonical_sha256":"c5e92bc53293511418a2072680f81d517bcce4b0349589aabfbe7e0e30d89398","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:15:43.826976Z","signature_b64":"43PH59/Xo2Z3oPqbMXn7jNw7gKEZygfmMFrJOL/Q+my9A8AaJUiyENkBPiNCmc9GRQBk7zDZ5uTbeef30Nk3Dg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c5e92bc53293511418a2072680f81d517bcce4b0349589aabfbe7e0e30d89398","last_reissued_at":"2026-07-05T01:15:43.826540Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:15:43.826540Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2007.01001","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":"2026-07-05T01:15:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ADAem15TkHlupRvGKGM6NraRwXAEQ0rBdnYuaM8A5KHCef/TSxZ2m8JbTF7fgKy3W2wN2eWro0fheDylRISdAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-06T18:07:50.480484Z"},"content_sha256":"91cfa6083de6b19c52cf072be6ef1e94c033e5c1a3002435f7f93fc517b2a656","schema_version":"1.0","event_id":"sha256:91cfa6083de6b19c52cf072be6ef1e94c033e5c1a3002435f7f93fc517b2a656"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:YXUSXRJSSNIRIGFCA4TIB6A5KF","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"PGD-UNet: A Position-Guided Deformable Network for Simultaneous Segmentation of Organs and Tumors","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.CV","cs.NE"],"primary_cat":"eess.IV","authors_text":"A. K. Qin, Hong Pan, Yaping Zhu, Ziqiang Li","submitted_at":"2020-07-02T10:23:57Z","abstract_excerpt":"Precise segmentation of organs and tumors plays a crucial role in clinical applications. It is a challenging task due to the irregular shapes and various sizes of organs and tumors as well as the significant class imbalance between the anatomy of interest (AOI) and the background region. In addition, in most situation tumors and normal organs often overlap in medical images, but current approaches fail to delineate both tumors and organs accurately. To tackle such challenges, we propose a position-guided deformable UNet, namely PGD-UNet, which exploits the spatial deformation capabilities of d"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2007.01001","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/2007.01001/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":"2026-07-05T01:15:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"M/5I8OZS/ru/w3rdlL3gDu7A9ZEY0r+pctbbS4VIjyPatedvo2p7BbjAkxFNV67dIAKz46HXTeng3U68qmgIDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-06T18:07:50.480859Z"},"content_sha256":"28cde129bd301a03de627236b7b5ce4ba1c8301f4008ec42687b399417b23525","schema_version":"1.0","event_id":"sha256:28cde129bd301a03de627236b7b5ce4ba1c8301f4008ec42687b399417b23525"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/YXUSXRJSSNIRIGFCA4TIB6A5KF/bundle.json","state_url":"https://pith.science/pith/YXUSXRJSSNIRIGFCA4TIB6A5KF/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/YXUSXRJSSNIRIGFCA4TIB6A5KF/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":"2026-07-06T18:07:50Z","links":{"resolver":"https://pith.science/pith/YXUSXRJSSNIRIGFCA4TIB6A5KF","bundle":"https://pith.science/pith/YXUSXRJSSNIRIGFCA4TIB6A5KF/bundle.json","state":"https://pith.science/pith/YXUSXRJSSNIRIGFCA4TIB6A5KF/state.json","well_known_bundle":"https://pith.science/.well-known/pith/YXUSXRJSSNIRIGFCA4TIB6A5KF/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:YXUSXRJSSNIRIGFCA4TIB6A5KF","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":"1262ee973e8d4346834c35109fc4ceea082078a7f0e4281f66b58908604891df","cross_cats_sorted":["cs.CV","cs.NE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.IV","submitted_at":"2020-07-02T10:23:57Z","title_canon_sha256":"743fec834a1a1c8c6b227dae737d11055731b2e7c6512b26e0f172280cb2aa60"},"schema_version":"1.0","source":{"id":"2007.01001","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2007.01001","created_at":"2026-07-05T01:15:43Z"},{"alias_kind":"arxiv_version","alias_value":"2007.01001v1","created_at":"2026-07-05T01:15:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2007.01001","created_at":"2026-07-05T01:15:43Z"},{"alias_kind":"pith_short_12","alias_value":"YXUSXRJSSNIR","created_at":"2026-07-05T01:15:43Z"},{"alias_kind":"pith_short_16","alias_value":"YXUSXRJSSNIRIGFC","created_at":"2026-07-05T01:15:43Z"},{"alias_kind":"pith_short_8","alias_value":"YXUSXRJS","created_at":"2026-07-05T01:15:43Z"}],"graph_snapshots":[{"event_id":"sha256:28cde129bd301a03de627236b7b5ce4ba1c8301f4008ec42687b399417b23525","target":"graph","created_at":"2026-07-05T01:15:43Z","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/2007.01001/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Precise segmentation of organs and tumors plays a crucial role in clinical applications. It is a challenging task due to the irregular shapes and various sizes of organs and tumors as well as the significant class imbalance between the anatomy of interest (AOI) and the background region. In addition, in most situation tumors and normal organs often overlap in medical images, but current approaches fail to delineate both tumors and organs accurately. To tackle such challenges, we propose a position-guided deformable UNet, namely PGD-UNet, which exploits the spatial deformation capabilities of d","authors_text":"A. K. Qin, Hong Pan, Yaping Zhu, Ziqiang Li","cross_cats":["cs.CV","cs.NE"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.IV","submitted_at":"2020-07-02T10:23:57Z","title":"PGD-UNet: A Position-Guided Deformable Network for Simultaneous Segmentation of Organs and Tumors"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2007.01001","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":"sha256:91cfa6083de6b19c52cf072be6ef1e94c033e5c1a3002435f7f93fc517b2a656","target":"record","created_at":"2026-07-05T01:15:43Z","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":"1262ee973e8d4346834c35109fc4ceea082078a7f0e4281f66b58908604891df","cross_cats_sorted":["cs.CV","cs.NE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.IV","submitted_at":"2020-07-02T10:23:57Z","title_canon_sha256":"743fec834a1a1c8c6b227dae737d11055731b2e7c6512b26e0f172280cb2aa60"},"schema_version":"1.0","source":{"id":"2007.01001","kind":"arxiv","version":1}},"canonical_sha256":"c5e92bc53293511418a2072680f81d517bcce4b0349589aabfbe7e0e30d89398","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c5e92bc53293511418a2072680f81d517bcce4b0349589aabfbe7e0e30d89398","first_computed_at":"2026-07-05T01:15:43.826540Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:15:43.826540Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"43PH59/Xo2Z3oPqbMXn7jNw7gKEZygfmMFrJOL/Q+my9A8AaJUiyENkBPiNCmc9GRQBk7zDZ5uTbeef30Nk3Dg==","signature_status":"signed_v1","signed_at":"2026-07-05T01:15:43.826976Z","signed_message":"canonical_sha256_bytes"},"source_id":"2007.01001","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:91cfa6083de6b19c52cf072be6ef1e94c033e5c1a3002435f7f93fc517b2a656","sha256:28cde129bd301a03de627236b7b5ce4ba1c8301f4008ec42687b399417b23525"],"state_sha256":"dc43d1d97abac7e88a52c157683b7d2cb20dd01915d079003b162d0b7afb4919"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ebiZiMEAZpNjk5HU4PIMuFp321pZdrB9857zrx2pKfxPc9xNIkuHESkMJBmBgnuxSTHjkhR2aK3xHu3BpIQAAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-06T18:07:50.482803Z","bundle_sha256":"bf26b135a9399710d05e6a05069c7522d0b903ede9ce3fa76c37f0dbf4023209"}}