{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:AXLQSQDQBGM7QOD7WFF2LEEHDL","short_pith_number":"pith:AXLQSQDQ","canonical_record":{"source":{"id":"1811.11251","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2018-11-27T20:46:11Z","cross_cats_sorted":[],"title_canon_sha256":"b699ec9ff677c08ffccf6e5d03ed78cef9bf005b477884c156293355c581b8ba","abstract_canon_sha256":"abd456d9a3e8a98f474e34d1ebd3025952a8235ae5bb0b5f7e6c09fcff956a7c"},"schema_version":"1.0"},"canonical_sha256":"05d70940700999f8387fb14ba590871af45f1f79c2f326b810f9d99c56c243de","source":{"kind":"arxiv","id":"1811.11251","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1811.11251","created_at":"2026-05-17T23:50:36Z"},{"alias_kind":"arxiv_version","alias_value":"1811.11251v2","created_at":"2026-05-17T23:50:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1811.11251","created_at":"2026-05-17T23:50:36Z"},{"alias_kind":"pith_short_12","alias_value":"AXLQSQDQBGM7","created_at":"2026-05-18T12:32:13Z"},{"alias_kind":"pith_short_16","alias_value":"AXLQSQDQBGM7QOD7","created_at":"2026-05-18T12:32:13Z"},{"alias_kind":"pith_short_8","alias_value":"AXLQSQDQ","created_at":"2026-05-18T12:32:13Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:AXLQSQDQBGM7QOD7WFF2LEEHDL","target":"record","payload":{"canonical_record":{"source":{"id":"1811.11251","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2018-11-27T20:46:11Z","cross_cats_sorted":[],"title_canon_sha256":"b699ec9ff677c08ffccf6e5d03ed78cef9bf005b477884c156293355c581b8ba","abstract_canon_sha256":"abd456d9a3e8a98f474e34d1ebd3025952a8235ae5bb0b5f7e6c09fcff956a7c"},"schema_version":"1.0"},"canonical_sha256":"05d70940700999f8387fb14ba590871af45f1f79c2f326b810f9d99c56c243de","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:50:36.293335Z","signature_b64":"dqvCG0AvG2HjLRlbj3/QJ0uWf+UA9+qttkGhQkyOVvhQIEUf6P0Ht2u4sDdKIZSvAnpuXJjwurn22+7ZDoxJAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"05d70940700999f8387fb14ba590871af45f1f79c2f326b810f9d99c56c243de","last_reissued_at":"2026-05-17T23:50:36.292783Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:50:36.292783Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1811.11251","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-17T23:50:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WYr9cxMj9QiCHdN6nSZ9MAEFtBPw8qbe353YC24kVJdU4qu/k4pT1CyT4lSW/N6fvHh8dvuM9pJ3GwGFCEuUBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T15:21:54.649043Z"},"content_sha256":"eb1ed84f95ec8d5c58a3be0e5615ad168ff46177121c067caffa14c6e0e747eb","schema_version":"1.0","event_id":"sha256:eb1ed84f95ec8d5c58a3be0e5615ad168ff46177121c067caffa14c6e0e747eb"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:AXLQSQDQBGM7QOD7WFF2LEEHDL","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Multiview Supervision By Registration","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.CV","authors_text":"Hyun Soo Park, Yilun Zhang","submitted_at":"2018-11-27T20:46:11Z","abstract_excerpt":"This paper presents a semi-supervised learning framework to train a keypoint detector using multiview image streams given the limited labeled data (typically $<$4\\%). We leverage the complementary relationship between multiview geometry and visual tracking to provide three types of supervisionary signals to utilize the unlabeled data: (1) keypoint detection in one view can be supervised by other views via the epipolar geometry; (2) a keypoint moves smoothly over time where its optical flow can be used to temporally supervise consecutive image frames to each other; (3) visible keypoint in one v"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1811.11251","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"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":"2026-05-17T23:50:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"RkF4M691Hfwv1uf16OmF+rI5l7HMNgsFA5J4hu6NHaFlyD4gk+UJ0Igxp0bBCzJwX10N00QacjDZVFMDpmLTCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T15:21:54.649692Z"},"content_sha256":"e03bc15430d3fd9d94c46242b9275495d361586859859980f809c876524fa87d","schema_version":"1.0","event_id":"sha256:e03bc15430d3fd9d94c46242b9275495d361586859859980f809c876524fa87d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/AXLQSQDQBGM7QOD7WFF2LEEHDL/bundle.json","state_url":"https://pith.science/pith/AXLQSQDQBGM7QOD7WFF2LEEHDL/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/AXLQSQDQBGM7QOD7WFF2LEEHDL/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":"2026-05-25T15:21:54Z","links":{"resolver":"https://pith.science/pith/AXLQSQDQBGM7QOD7WFF2LEEHDL","bundle":"https://pith.science/pith/AXLQSQDQBGM7QOD7WFF2LEEHDL/bundle.json","state":"https://pith.science/pith/AXLQSQDQBGM7QOD7WFF2LEEHDL/state.json","well_known_bundle":"https://pith.science/.well-known/pith/AXLQSQDQBGM7QOD7WFF2LEEHDL/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:AXLQSQDQBGM7QOD7WFF2LEEHDL","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":"abd456d9a3e8a98f474e34d1ebd3025952a8235ae5bb0b5f7e6c09fcff956a7c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2018-11-27T20:46:11Z","title_canon_sha256":"b699ec9ff677c08ffccf6e5d03ed78cef9bf005b477884c156293355c581b8ba"},"schema_version":"1.0","source":{"id":"1811.11251","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1811.11251","created_at":"2026-05-17T23:50:36Z"},{"alias_kind":"arxiv_version","alias_value":"1811.11251v2","created_at":"2026-05-17T23:50:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1811.11251","created_at":"2026-05-17T23:50:36Z"},{"alias_kind":"pith_short_12","alias_value":"AXLQSQDQBGM7","created_at":"2026-05-18T12:32:13Z"},{"alias_kind":"pith_short_16","alias_value":"AXLQSQDQBGM7QOD7","created_at":"2026-05-18T12:32:13Z"},{"alias_kind":"pith_short_8","alias_value":"AXLQSQDQ","created_at":"2026-05-18T12:32:13Z"}],"graph_snapshots":[{"event_id":"sha256:e03bc15430d3fd9d94c46242b9275495d361586859859980f809c876524fa87d","target":"graph","created_at":"2026-05-17T23:50:36Z","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"},"paper":{"abstract_excerpt":"This paper presents a semi-supervised learning framework to train a keypoint detector using multiview image streams given the limited labeled data (typically $<$4\\%). We leverage the complementary relationship between multiview geometry and visual tracking to provide three types of supervisionary signals to utilize the unlabeled data: (1) keypoint detection in one view can be supervised by other views via the epipolar geometry; (2) a keypoint moves smoothly over time where its optical flow can be used to temporally supervise consecutive image frames to each other; (3) visible keypoint in one v","authors_text":"Hyun Soo Park, Yilun Zhang","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2018-11-27T20:46:11Z","title":"Multiview Supervision By Registration"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1811.11251","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:eb1ed84f95ec8d5c58a3be0e5615ad168ff46177121c067caffa14c6e0e747eb","target":"record","created_at":"2026-05-17T23:50:36Z","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":"abd456d9a3e8a98f474e34d1ebd3025952a8235ae5bb0b5f7e6c09fcff956a7c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2018-11-27T20:46:11Z","title_canon_sha256":"b699ec9ff677c08ffccf6e5d03ed78cef9bf005b477884c156293355c581b8ba"},"schema_version":"1.0","source":{"id":"1811.11251","kind":"arxiv","version":2}},"canonical_sha256":"05d70940700999f8387fb14ba590871af45f1f79c2f326b810f9d99c56c243de","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"05d70940700999f8387fb14ba590871af45f1f79c2f326b810f9d99c56c243de","first_computed_at":"2026-05-17T23:50:36.292783Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:50:36.292783Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"dqvCG0AvG2HjLRlbj3/QJ0uWf+UA9+qttkGhQkyOVvhQIEUf6P0Ht2u4sDdKIZSvAnpuXJjwurn22+7ZDoxJAg==","signature_status":"signed_v1","signed_at":"2026-05-17T23:50:36.293335Z","signed_message":"canonical_sha256_bytes"},"source_id":"1811.11251","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:eb1ed84f95ec8d5c58a3be0e5615ad168ff46177121c067caffa14c6e0e747eb","sha256:e03bc15430d3fd9d94c46242b9275495d361586859859980f809c876524fa87d"],"state_sha256":"e00a1988e053e757822f513531cdfa1a2026806d3c860327152bd355bfbd1a1a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"biIj4l4LJIQRLv0ovQLcmitoNF/xNVRIiEc6K/RpK1kmdCDxrf7kxwfbsnI4xNhONcc+MqS6l+Om1Jm3+ZQ8Dg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T15:21:54.653084Z","bundle_sha256":"4ae395a49d1972e258669fe67e33fa18f1b1fbed46c43439aebb66ff167d2ce2"}}