{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:Z2XGTPQBWRZ5FDRSPBNVQOJKDI","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":"7b9b0836a31feb2dea476df0447509b4e7b8e937cd96ca46258f88edd804caee","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2017-03-22T18:49:05Z","title_canon_sha256":"a45431d6051cba8cc542e7a1666ef0865c50c1a4b76b1ccdc161c82e4e72fb32"},"schema_version":"1.0","source":{"id":"1703.07814","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1703.07814","created_at":"2026-05-18T00:36:14Z"},{"alias_kind":"arxiv_version","alias_value":"1703.07814v2","created_at":"2026-05-18T00:36:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1703.07814","created_at":"2026-05-18T00:36:14Z"},{"alias_kind":"pith_short_12","alias_value":"Z2XGTPQBWRZ5","created_at":"2026-05-18T12:31:59Z"},{"alias_kind":"pith_short_16","alias_value":"Z2XGTPQBWRZ5FDRS","created_at":"2026-05-18T12:31:59Z"},{"alias_kind":"pith_short_8","alias_value":"Z2XGTPQB","created_at":"2026-05-18T12:31:59Z"}],"graph_snapshots":[{"event_id":"sha256:cbe5b5bf5d86126a21171fc6001722eac2bd92be27c0d514d96153042b5768ed","target":"graph","created_at":"2026-05-18T00:36:14Z","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":"We address the problem of activity detection in continuous, untrimmed video streams. This is a difficult task that requires extracting meaningful spatio-temporal features to capture activities, accurately localizing the start and end times of each activity. We introduce a new model, Region Convolutional 3D Network (R-C3D), which encodes the video streams using a three-dimensional fully convolutional network, then generates candidate temporal regions containing activities, and finally classifies selected regions into specific activities. Computation is saved due to the sharing of convolutional ","authors_text":"Abir Das, Huijuan Xu, Kate Saenko","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2017-03-22T18:49:05Z","title":"R-C3D: Region Convolutional 3D Network for Temporal Activity Detection"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1703.07814","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":"sha256:12117ff55f0ce2e692273b6d566e7c6794f9a2a5e5346d1ee0ab2329df19aa76","target":"record","created_at":"2026-05-18T00:36:14Z","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":"7b9b0836a31feb2dea476df0447509b4e7b8e937cd96ca46258f88edd804caee","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2017-03-22T18:49:05Z","title_canon_sha256":"a45431d6051cba8cc542e7a1666ef0865c50c1a4b76b1ccdc161c82e4e72fb32"},"schema_version":"1.0","source":{"id":"1703.07814","kind":"arxiv","version":2}},"canonical_sha256":"ceae69be01b473d28e32785b58392a1a34c36bb2b6e9459b881a60448e04d195","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ceae69be01b473d28e32785b58392a1a34c36bb2b6e9459b881a60448e04d195","first_computed_at":"2026-05-18T00:36:14.150659Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:36:14.150659Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"/ymzl9aojRP4LUs8Y0ByWR7IT02FRiWrh2vQDDhfYsZ3J+WJm157VevABM7Dq8nva05bfO9ZYzpXDr6JRJKXDw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:36:14.151372Z","signed_message":"canonical_sha256_bytes"},"source_id":"1703.07814","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:12117ff55f0ce2e692273b6d566e7c6794f9a2a5e5346d1ee0ab2329df19aa76","sha256:cbe5b5bf5d86126a21171fc6001722eac2bd92be27c0d514d96153042b5768ed"],"state_sha256":"cf20769cfdc9708cdb825a81ccf37dab164ed3a4403fdb711bf8c682530e76b7"}