{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:6YSSTTO6IFDRWAB3I45VV3QPXH","short_pith_number":"pith:6YSSTTO6","canonical_record":{"source":{"id":"2009.09984","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2020-09-21T16:08:47Z","cross_cats_sorted":["cs.AI"],"title_canon_sha256":"42b948e7bd6437c662cfee86f11bc1892a5692dcc8d82890f94fe33cf44793e4","abstract_canon_sha256":"ee1993da47b51086f4c37c66c784a98878c18ff4dc8706c872e101392be39e3e"},"schema_version":"1.0"},"canonical_sha256":"f62529cdde41471b003b473b5aee0fb9fc1850c75ea4377da627fa08d4cd9e52","source":{"kind":"arxiv","id":"2009.09984","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2009.09984","created_at":"2026-07-05T01:36:55Z"},{"alias_kind":"arxiv_version","alias_value":"2009.09984v1","created_at":"2026-07-05T01:36:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2009.09984","created_at":"2026-07-05T01:36:55Z"},{"alias_kind":"pith_short_12","alias_value":"6YSSTTO6IFDR","created_at":"2026-07-05T01:36:55Z"},{"alias_kind":"pith_short_16","alias_value":"6YSSTTO6IFDRWAB3","created_at":"2026-07-05T01:36:55Z"},{"alias_kind":"pith_short_8","alias_value":"6YSSTTO6","created_at":"2026-07-05T01:36:55Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:6YSSTTO6IFDRWAB3I45VV3QPXH","target":"record","payload":{"canonical_record":{"source":{"id":"2009.09984","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2020-09-21T16:08:47Z","cross_cats_sorted":["cs.AI"],"title_canon_sha256":"42b948e7bd6437c662cfee86f11bc1892a5692dcc8d82890f94fe33cf44793e4","abstract_canon_sha256":"ee1993da47b51086f4c37c66c784a98878c18ff4dc8706c872e101392be39e3e"},"schema_version":"1.0"},"canonical_sha256":"f62529cdde41471b003b473b5aee0fb9fc1850c75ea4377da627fa08d4cd9e52","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:36:55.109784Z","signature_b64":"ZIFzbN/gnUbapxa2hi5aTUEe9367GqSsCwqvaFc1E9ccXfOatZh5rLRgZuK32T43zM04gfyi4KoF/SgsN43bCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f62529cdde41471b003b473b5aee0fb9fc1850c75ea4377da627fa08d4cd9e52","last_reissued_at":"2026-07-05T01:36:55.109372Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:36:55.109372Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2009.09984","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":"2026-07-05T01:36:55Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"qYztx39/LO8p3BgATLXFuUwpEmCUkT+ga8/WDF0eeqR85/YUsNCNVQUYE4zRIzdWow4k+LqszZHtZXMQIafzCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T10:08:25.133032Z"},"content_sha256":"ce5d145e1ac41477afa70cc6b0a05dd0155d570bc1342e4d54edc9c8483675e2","schema_version":"1.0","event_id":"sha256:ce5d145e1ac41477afa70cc6b0a05dd0155d570bc1342e4d54edc9c8483675e2"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:6YSSTTO6IFDRWAB3I45VV3QPXH","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"TRECVID 2019: An Evaluation Campaign to Benchmark Video Activity Detection, Video Captioning and Matching, and Video Search & Retrieval","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.AI"],"primary_cat":"cs.CV","authors_text":"Afzal Godil, Alan F. Smeaton, Andrew Delgado, Asad A. Butt, Eliot Godard, George Awad, Georges Quenot, Jesse Zhang, Jonathan Fiscus, Keith Curtis, Lukas Diduch, Wessel Kraaij, Yooyoung Lee, Yvette Graham","submitted_at":"2020-09-21T16:08:47Z","abstract_excerpt":"The TREC Video Retrieval Evaluation (TRECVID) 2019 was a TREC-style video analysis and retrieval evaluation, the goal of which remains to promote progress in research and development of content-based exploitation and retrieval of information from digital video via open, metrics-based evaluation. Over the last nineteen years this effort has yielded a better understanding of how systems can effectively accomplish such processing and how one can reliably benchmark their performance. TRECVID has been funded by NIST (National Institute of Standards and Technology) and other US government agencies. "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2009.09984","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/2009.09984/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":"2026-07-05T01:36:55Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+vOCd+qYi5cYUDlnJu7E5l+ePQjH3gEyRoO8P3rJ87ZBiFYcynp6ISZHA34WFKkES4v0FugKB0CjWbYJEc1tBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T10:08:25.133411Z"},"content_sha256":"102a7214acc29f7f80921acdd1816f49349e9fc391f6b3d091c4cc5c1165e1af","schema_version":"1.0","event_id":"sha256:102a7214acc29f7f80921acdd1816f49349e9fc391f6b3d091c4cc5c1165e1af"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/6YSSTTO6IFDRWAB3I45VV3QPXH/bundle.json","state_url":"https://pith.science/pith/6YSSTTO6IFDRWAB3I45VV3QPXH/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/6YSSTTO6IFDRWAB3I45VV3QPXH/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":"2026-07-07T10:08:25Z","links":{"resolver":"https://pith.science/pith/6YSSTTO6IFDRWAB3I45VV3QPXH","bundle":"https://pith.science/pith/6YSSTTO6IFDRWAB3I45VV3QPXH/bundle.json","state":"https://pith.science/pith/6YSSTTO6IFDRWAB3I45VV3QPXH/state.json","well_known_bundle":"https://pith.science/.well-known/pith/6YSSTTO6IFDRWAB3I45VV3QPXH/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:6YSSTTO6IFDRWAB3I45VV3QPXH","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":"ee1993da47b51086f4c37c66c784a98878c18ff4dc8706c872e101392be39e3e","cross_cats_sorted":["cs.AI"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2020-09-21T16:08:47Z","title_canon_sha256":"42b948e7bd6437c662cfee86f11bc1892a5692dcc8d82890f94fe33cf44793e4"},"schema_version":"1.0","source":{"id":"2009.09984","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2009.09984","created_at":"2026-07-05T01:36:55Z"},{"alias_kind":"arxiv_version","alias_value":"2009.09984v1","created_at":"2026-07-05T01:36:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2009.09984","created_at":"2026-07-05T01:36:55Z"},{"alias_kind":"pith_short_12","alias_value":"6YSSTTO6IFDR","created_at":"2026-07-05T01:36:55Z"},{"alias_kind":"pith_short_16","alias_value":"6YSSTTO6IFDRWAB3","created_at":"2026-07-05T01:36:55Z"},{"alias_kind":"pith_short_8","alias_value":"6YSSTTO6","created_at":"2026-07-05T01:36:55Z"}],"graph_snapshots":[{"event_id":"sha256:102a7214acc29f7f80921acdd1816f49349e9fc391f6b3d091c4cc5c1165e1af","target":"graph","created_at":"2026-07-05T01:36:55Z","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/2009.09984/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The TREC Video Retrieval Evaluation (TRECVID) 2019 was a TREC-style video analysis and retrieval evaluation, the goal of which remains to promote progress in research and development of content-based exploitation and retrieval of information from digital video via open, metrics-based evaluation. Over the last nineteen years this effort has yielded a better understanding of how systems can effectively accomplish such processing and how one can reliably benchmark their performance. TRECVID has been funded by NIST (National Institute of Standards and Technology) and other US government agencies. ","authors_text":"Afzal Godil, Alan F. Smeaton, Andrew Delgado, Asad A. Butt, Eliot Godard, George Awad, Georges Quenot, Jesse Zhang, Jonathan Fiscus, Keith Curtis, Lukas Diduch, Wessel Kraaij, Yooyoung Lee, Yvette Graham","cross_cats":["cs.AI"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2020-09-21T16:08:47Z","title":"TRECVID 2019: An Evaluation Campaign to Benchmark Video Activity Detection, Video Captioning and Matching, and Video Search & Retrieval"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2009.09984","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:ce5d145e1ac41477afa70cc6b0a05dd0155d570bc1342e4d54edc9c8483675e2","target":"record","created_at":"2026-07-05T01:36:55Z","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":"ee1993da47b51086f4c37c66c784a98878c18ff4dc8706c872e101392be39e3e","cross_cats_sorted":["cs.AI"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2020-09-21T16:08:47Z","title_canon_sha256":"42b948e7bd6437c662cfee86f11bc1892a5692dcc8d82890f94fe33cf44793e4"},"schema_version":"1.0","source":{"id":"2009.09984","kind":"arxiv","version":1}},"canonical_sha256":"f62529cdde41471b003b473b5aee0fb9fc1850c75ea4377da627fa08d4cd9e52","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f62529cdde41471b003b473b5aee0fb9fc1850c75ea4377da627fa08d4cd9e52","first_computed_at":"2026-07-05T01:36:55.109372Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:36:55.109372Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ZIFzbN/gnUbapxa2hi5aTUEe9367GqSsCwqvaFc1E9ccXfOatZh5rLRgZuK32T43zM04gfyi4KoF/SgsN43bCQ==","signature_status":"signed_v1","signed_at":"2026-07-05T01:36:55.109784Z","signed_message":"canonical_sha256_bytes"},"source_id":"2009.09984","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ce5d145e1ac41477afa70cc6b0a05dd0155d570bc1342e4d54edc9c8483675e2","sha256:102a7214acc29f7f80921acdd1816f49349e9fc391f6b3d091c4cc5c1165e1af"],"state_sha256":"794de61ede0efd85c042ce3b6aaa8c05d7a855d63745e5210cd5583c2f37d51b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"yO/IpB27J7/IWgJBcQlju17+vzk6s2m5oE6TVeRFCgQS9KuM3OOQk1FSArhyvaIMLQSHr0R95pIl4VJh8/q9BA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-07T10:08:25.135288Z","bundle_sha256":"af86af34ec2e1c9f2e505e0a0dfffd4ea02fd40c1a61ae281781db82af317ae3"}}