{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:BGJCXBX5746FCXDEUY7KH353CF","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":"20d9fc6af302bf4a6d3f4d69fb5a7e2740625ea56542c464993b225835ab926e","cross_cats_sorted":["cs.DC"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2020-03-06T11:05:55Z","title_canon_sha256":"eca9debe2bc49d04b4f1989719330652153772f72e2107d8680caf424e11f0f1"},"schema_version":"1.0","source":{"id":"2003.03134","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2003.03134","created_at":"2026-07-05T00:51:21Z"},{"alias_kind":"arxiv_version","alias_value":"2003.03134v2","created_at":"2026-07-05T00:51:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2003.03134","created_at":"2026-07-05T00:51:21Z"},{"alias_kind":"pith_short_12","alias_value":"BGJCXBX5746F","created_at":"2026-07-05T00:51:21Z"},{"alias_kind":"pith_short_16","alias_value":"BGJCXBX5746FCXDE","created_at":"2026-07-05T00:51:21Z"},{"alias_kind":"pith_short_8","alias_value":"BGJCXBX5","created_at":"2026-07-05T00:51:21Z"}],"graph_snapshots":[{"event_id":"sha256:b6c6bca69c50d5c261361798279f333de102f35d60b0c391dd5771eacf35fd59","target":"graph","created_at":"2026-07-05T00:51:21Z","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/2003.03134/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Graph processors such as Graphcore's Intelligence Processing Unit (IPU) are part of the major new wave of novel computer architecture for AI, and have a general design with massively parallel computation, distributed on-chip memory and very high inter-core communication bandwidth which allows breakthrough performance for message passing algorithms on arbitrary graphs. We show for the first time that the classical computer vision problem of bundle adjustment (BA) can be solved extremely fast on a graph processor using Gaussian Belief Propagation. Our simple but fully parallel implementation use","authors_text":"Andrew J. Davison, Joseph Ortiz, Mark Pupilli, Stefan Leutenegger","cross_cats":["cs.DC"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2020-03-06T11:05:55Z","title":"Bundle Adjustment on a Graph Processor"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2003.03134","kind":"arxiv","version":2},"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":"sha256:51b94d877a48871c9178776fe3d4ae201dc810cf0eafd10455c61e01f9b92144","target":"record","created_at":"2026-07-05T00:51:21Z","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":"20d9fc6af302bf4a6d3f4d69fb5a7e2740625ea56542c464993b225835ab926e","cross_cats_sorted":["cs.DC"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2020-03-06T11:05:55Z","title_canon_sha256":"eca9debe2bc49d04b4f1989719330652153772f72e2107d8680caf424e11f0f1"},"schema_version":"1.0","source":{"id":"2003.03134","kind":"arxiv","version":2}},"canonical_sha256":"09922b86fdff3c515c64a63ea3efbb1165f8b74646cd9cdd0eaa595bbce8c779","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"09922b86fdff3c515c64a63ea3efbb1165f8b74646cd9cdd0eaa595bbce8c779","first_computed_at":"2026-07-05T00:51:21.159232Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:51:21.159232Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"t2RAhWRykNfrEApTc5wto/20WE9PW8bBj7AYJ/U8AR3qOSO/+cMkbIPBLurpzgWuLJh4xl5LY+IaWqkd4IJ+Ag==","signature_status":"signed_v1","signed_at":"2026-07-05T00:51:21.159755Z","signed_message":"canonical_sha256_bytes"},"source_id":"2003.03134","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:51b94d877a48871c9178776fe3d4ae201dc810cf0eafd10455c61e01f9b92144","sha256:b6c6bca69c50d5c261361798279f333de102f35d60b0c391dd5771eacf35fd59"],"state_sha256":"343be5e4b711e86c17960f05034455b279d99b86e203ec4944f0257be0b7c334"}