{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:TZ3SSFDX3DSETTPXMV6VJ2UJRX","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":"b532bc03482c511f200dd7bd8dd36b165276c1d05929b07396b401eaacfe8fa8","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2019-06-05T02:48:37Z","title_canon_sha256":"70f28e5a402dfe6918186b7d068dd89d788ac6278313c7c68e9dba9481fb71cc"},"schema_version":"1.0","source":{"id":"1906.02182","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1906.02182","created_at":"2026-05-17T23:44:01Z"},{"alias_kind":"arxiv_version","alias_value":"1906.02182v1","created_at":"2026-05-17T23:44:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1906.02182","created_at":"2026-05-17T23:44:01Z"},{"alias_kind":"pith_short_12","alias_value":"TZ3SSFDX3DSE","created_at":"2026-05-18T12:33:30Z"},{"alias_kind":"pith_short_16","alias_value":"TZ3SSFDX3DSETTPX","created_at":"2026-05-18T12:33:30Z"},{"alias_kind":"pith_short_8","alias_value":"TZ3SSFDX","created_at":"2026-05-18T12:33:30Z"}],"graph_snapshots":[{"event_id":"sha256:5e367ff01a63b60f54b4076695aea4c54b8d079fde8da618b6cc9e2fc07f8ecc","target":"graph","created_at":"2026-05-17T23:44:01Z","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 temporal 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 convol","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":"2019-06-05T02:48:37Z","title":"Two-Stream Region Convolutional 3D Network for Temporal Activity Detection"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1906.02182","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":"sha256:00f885a68690e26b00f0005f39f324092b5381f20e7d82e80093c3ce4e2186be","target":"record","created_at":"2026-05-17T23:44:01Z","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":"b532bc03482c511f200dd7bd8dd36b165276c1d05929b07396b401eaacfe8fa8","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2019-06-05T02:48:37Z","title_canon_sha256":"70f28e5a402dfe6918186b7d068dd89d788ac6278313c7c68e9dba9481fb71cc"},"schema_version":"1.0","source":{"id":"1906.02182","kind":"arxiv","version":1}},"canonical_sha256":"9e77291477d8e449cdf7657d54ea898dc5efc202d7e7939e110b6d6149a0d85c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9e77291477d8e449cdf7657d54ea898dc5efc202d7e7939e110b6d6149a0d85c","first_computed_at":"2026-05-17T23:44:01.950148Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:44:01.950148Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"9KsrTXh/Dc2b3goRkH13Ks3gP6ElSI3l0Z1lBHvDvlNoglPozJzG0bvqz8b8Ayxnevov8dd2ahMeKN1nRqFGAg==","signature_status":"signed_v1","signed_at":"2026-05-17T23:44:01.950687Z","signed_message":"canonical_sha256_bytes"},"source_id":"1906.02182","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:00f885a68690e26b00f0005f39f324092b5381f20e7d82e80093c3ce4e2186be","sha256:5e367ff01a63b60f54b4076695aea4c54b8d079fde8da618b6cc9e2fc07f8ecc"],"state_sha256":"7ccc2dc0fa172b896129caf0387b9ee20afa4a49e127c697162a156faf42f81b"}