{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2023:CFNQR4ZTAEYHRPH3DMHIXL2TFK","short_pith_number":"pith:CFNQR4ZT","canonical_record":{"source":{"id":"2307.14726","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2023-07-27T09:31:01Z","cross_cats_sorted":["cs.GR"],"title_canon_sha256":"23175250ad6ffb645042b599c5b1b6a943897a55840639ceb6ea81a2818cf445","abstract_canon_sha256":"27146d34c07d3ad6688ea0a9155e37f9af66f7f8e2e12c759360cbd782bbe0a2"},"schema_version":"1.0"},"canonical_sha256":"115b08f333013078bcfb1b0e8baf532a999d92a4a6df96b6d318df72f2fe1b3e","source":{"kind":"arxiv","id":"2307.14726","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2307.14726","created_at":"2026-07-05T08:43:05Z"},{"alias_kind":"arxiv_version","alias_value":"2307.14726v1","created_at":"2026-07-05T08:43:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2307.14726","created_at":"2026-07-05T08:43:05Z"},{"alias_kind":"pith_short_12","alias_value":"CFNQR4ZTAEYH","created_at":"2026-07-05T08:43:05Z"},{"alias_kind":"pith_short_16","alias_value":"CFNQR4ZTAEYHRPH3","created_at":"2026-07-05T08:43:05Z"},{"alias_kind":"pith_short_8","alias_value":"CFNQR4ZT","created_at":"2026-07-05T08:43:05Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2023:CFNQR4ZTAEYHRPH3DMHIXL2TFK","target":"record","payload":{"canonical_record":{"source":{"id":"2307.14726","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2023-07-27T09:31:01Z","cross_cats_sorted":["cs.GR"],"title_canon_sha256":"23175250ad6ffb645042b599c5b1b6a943897a55840639ceb6ea81a2818cf445","abstract_canon_sha256":"27146d34c07d3ad6688ea0a9155e37f9af66f7f8e2e12c759360cbd782bbe0a2"},"schema_version":"1.0"},"canonical_sha256":"115b08f333013078bcfb1b0e8baf532a999d92a4a6df96b6d318df72f2fe1b3e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T08:43:05.339197Z","signature_b64":"zD/a1nmCgx/v+0bqDwJ/nPs3Q7l9n84i2/9rWHveXM5DbFFNRZA6cg767Vs5P95zsqbUEulW5lFcI1SM6MDSDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"115b08f333013078bcfb1b0e8baf532a999d92a4a6df96b6d318df72f2fe1b3e","last_reissued_at":"2026-07-05T08:43:05.338714Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T08:43:05.338714Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2307.14726","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":"2026-07-05T08:43:05Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ld4N65E23Rd9wXvcVpQcJ2YAPmlBPeF3pdS9zterhqLwkAoK97OiN7inQ1jVtDQGoj8JN0kvHNjjofaglniXBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T06:22:43.977980Z"},"content_sha256":"440c0597612e4e727659ee47081ec016dd43806a736a610ce494bf8c3831e1de","schema_version":"1.0","event_id":"sha256:440c0597612e4e727659ee47081ec016dd43806a736a610ce494bf8c3831e1de"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2023:CFNQR4ZTAEYHRPH3DMHIXL2TFK","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"P2C: Self-Supervised Point Cloud Completion from Single Partial Clouds","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.GR"],"primary_cat":"cs.CV","authors_text":"Chaoyue Xing, Jiawei Liu, Jing Zhang, Nick Barnes, Ruikai Cui, Saeed Anwar, Shi Qiu","submitted_at":"2023-07-27T09:31:01Z","abstract_excerpt":"Point cloud completion aims to recover the complete shape based on a partial observation. Existing methods require either complete point clouds or multiple partial observations of the same object for learning. In contrast to previous approaches, we present Partial2Complete (P2C), the first self-supervised framework that completes point cloud objects using training samples consisting of only a single incomplete point cloud per object. Specifically, our framework groups incomplete point clouds into local patches as input and predicts masked patches by learning prior information from different pa"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2307.14726","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/2307.14726/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":"2026-07-05T08:43:05Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"EN9JLRqklQcHlsJXlalY59aoieDFuUMFySdnFA+sb/R+qqKrDE6mI2uJkrqUvACoQEcm3U6MUaPsM5yeImfyBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T06:22:43.978387Z"},"content_sha256":"f92d2b112f8c83cbf84250b982ca2df0a970b4de3e4be5ae8249c93ba299bd44","schema_version":"1.0","event_id":"sha256:f92d2b112f8c83cbf84250b982ca2df0a970b4de3e4be5ae8249c93ba299bd44"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/CFNQR4ZTAEYHRPH3DMHIXL2TFK/bundle.json","state_url":"https://pith.science/pith/CFNQR4ZTAEYHRPH3DMHIXL2TFK/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/CFNQR4ZTAEYHRPH3DMHIXL2TFK/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":"2026-07-07T06:22:43Z","links":{"resolver":"https://pith.science/pith/CFNQR4ZTAEYHRPH3DMHIXL2TFK","bundle":"https://pith.science/pith/CFNQR4ZTAEYHRPH3DMHIXL2TFK/bundle.json","state":"https://pith.science/pith/CFNQR4ZTAEYHRPH3DMHIXL2TFK/state.json","well_known_bundle":"https://pith.science/.well-known/pith/CFNQR4ZTAEYHRPH3DMHIXL2TFK/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:CFNQR4ZTAEYHRPH3DMHIXL2TFK","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":"27146d34c07d3ad6688ea0a9155e37f9af66f7f8e2e12c759360cbd782bbe0a2","cross_cats_sorted":["cs.GR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2023-07-27T09:31:01Z","title_canon_sha256":"23175250ad6ffb645042b599c5b1b6a943897a55840639ceb6ea81a2818cf445"},"schema_version":"1.0","source":{"id":"2307.14726","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2307.14726","created_at":"2026-07-05T08:43:05Z"},{"alias_kind":"arxiv_version","alias_value":"2307.14726v1","created_at":"2026-07-05T08:43:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2307.14726","created_at":"2026-07-05T08:43:05Z"},{"alias_kind":"pith_short_12","alias_value":"CFNQR4ZTAEYH","created_at":"2026-07-05T08:43:05Z"},{"alias_kind":"pith_short_16","alias_value":"CFNQR4ZTAEYHRPH3","created_at":"2026-07-05T08:43:05Z"},{"alias_kind":"pith_short_8","alias_value":"CFNQR4ZT","created_at":"2026-07-05T08:43:05Z"}],"graph_snapshots":[{"event_id":"sha256:f92d2b112f8c83cbf84250b982ca2df0a970b4de3e4be5ae8249c93ba299bd44","target":"graph","created_at":"2026-07-05T08:43:05Z","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/2307.14726/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Point cloud completion aims to recover the complete shape based on a partial observation. Existing methods require either complete point clouds or multiple partial observations of the same object for learning. In contrast to previous approaches, we present Partial2Complete (P2C), the first self-supervised framework that completes point cloud objects using training samples consisting of only a single incomplete point cloud per object. Specifically, our framework groups incomplete point clouds into local patches as input and predicts masked patches by learning prior information from different pa","authors_text":"Chaoyue Xing, Jiawei Liu, Jing Zhang, Nick Barnes, Ruikai Cui, Saeed Anwar, Shi Qiu","cross_cats":["cs.GR"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2023-07-27T09:31:01Z","title":"P2C: Self-Supervised Point Cloud Completion from Single Partial Clouds"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2307.14726","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":"sha256:440c0597612e4e727659ee47081ec016dd43806a736a610ce494bf8c3831e1de","target":"record","created_at":"2026-07-05T08:43:05Z","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":"27146d34c07d3ad6688ea0a9155e37f9af66f7f8e2e12c759360cbd782bbe0a2","cross_cats_sorted":["cs.GR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2023-07-27T09:31:01Z","title_canon_sha256":"23175250ad6ffb645042b599c5b1b6a943897a55840639ceb6ea81a2818cf445"},"schema_version":"1.0","source":{"id":"2307.14726","kind":"arxiv","version":1}},"canonical_sha256":"115b08f333013078bcfb1b0e8baf532a999d92a4a6df96b6d318df72f2fe1b3e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"115b08f333013078bcfb1b0e8baf532a999d92a4a6df96b6d318df72f2fe1b3e","first_computed_at":"2026-07-05T08:43:05.338714Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T08:43:05.338714Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"zD/a1nmCgx/v+0bqDwJ/nPs3Q7l9n84i2/9rWHveXM5DbFFNRZA6cg767Vs5P95zsqbUEulW5lFcI1SM6MDSDQ==","signature_status":"signed_v1","signed_at":"2026-07-05T08:43:05.339197Z","signed_message":"canonical_sha256_bytes"},"source_id":"2307.14726","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:440c0597612e4e727659ee47081ec016dd43806a736a610ce494bf8c3831e1de","sha256:f92d2b112f8c83cbf84250b982ca2df0a970b4de3e4be5ae8249c93ba299bd44"],"state_sha256":"e1f8b61279749627d1593d180d6a6e02ec86ee403819b201f6c1c6cc1c8b74dd"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"wm0VpA4uavzDutoCCoL72DZAR4QtWkBbCbKZtA+nQjfWkKHy8+KYioLqo4wuIqj+HKkzxic25rgRlky/3DbxBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-07T06:22:43.980946Z","bundle_sha256":"2fd034f28c48d05857f74b1da0bddf3acc8e8eceeb97e7ef3b58103d82a6ec58"}}