{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:GFQVEOH55COIMBE63OPOCTYK34","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":"dbd96845face8acada53df053451209c7bbf96d4561b6af714444ae750e07602","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2019-04-29T23:59:22Z","title_canon_sha256":"4f894aa420617318d1615e951be528e3c474c5dfe2ffb48a5b9d020db841529c"},"schema_version":"1.0","source":{"id":"1904.12993","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1904.12993","created_at":"2026-05-17T23:43:49Z"},{"alias_kind":"arxiv_version","alias_value":"1904.12993v2","created_at":"2026-05-17T23:43:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1904.12993","created_at":"2026-05-17T23:43:49Z"},{"alias_kind":"pith_short_12","alias_value":"GFQVEOH55COI","created_at":"2026-05-18T12:33:18Z"},{"alias_kind":"pith_short_16","alias_value":"GFQVEOH55COIMBE6","created_at":"2026-05-18T12:33:18Z"},{"alias_kind":"pith_short_8","alias_value":"GFQVEOH5","created_at":"2026-05-18T12:33:18Z"}],"graph_snapshots":[{"event_id":"sha256:327140edbfc84a367d1dfd677d74c60bd65eeb7fb32668b7829a0169c3ad7fde","target":"graph","created_at":"2026-05-17T23:43:49Z","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":"The recent introduction of the AVA dataset for action detection has caused a renewed interest to this problem. Several approaches have been recently proposed that improved the performance. However, all of them have ignored the main difficulty of the AVA dataset - its realistic distribution of training and test examples. This dataset was collected by exhaustive annotation of human action in uncurated videos. As a result, the most common categories, such as `stand' or `sit', contain tens of thousands of examples, whereas rare ones have only dozens. In this work we study the problem of action det","authors_text":"Cordelia Schmid, Martial Hebert, Pavel Tokmakov, Yubo Zhang","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2019-04-29T23:59:22Z","title":"A Study on Action Detection in the Wild"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1904.12993","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":"sha256:4b03fcd68210091c66d96ac4a176637b5c3d343921405722c7cb8f92639fd42a","target":"record","created_at":"2026-05-17T23:43:49Z","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":"dbd96845face8acada53df053451209c7bbf96d4561b6af714444ae750e07602","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2019-04-29T23:59:22Z","title_canon_sha256":"4f894aa420617318d1615e951be528e3c474c5dfe2ffb48a5b9d020db841529c"},"schema_version":"1.0","source":{"id":"1904.12993","kind":"arxiv","version":2}},"canonical_sha256":"31615238fde89c86049edb9ee14f0adf15176edefa669c2600e37812a2ed1831","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"31615238fde89c86049edb9ee14f0adf15176edefa669c2600e37812a2ed1831","first_computed_at":"2026-05-17T23:43:49.473701Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:43:49.473701Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"cWUqOrQGPA194zqADPykSCMH2aGLxNEVA6u0N+cqSRrIFncWEVncijW0vltoe1T1ofDMOVCmY+SbF5UXeyntAA==","signature_status":"signed_v1","signed_at":"2026-05-17T23:43:49.474371Z","signed_message":"canonical_sha256_bytes"},"source_id":"1904.12993","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4b03fcd68210091c66d96ac4a176637b5c3d343921405722c7cb8f92639fd42a","sha256:327140edbfc84a367d1dfd677d74c60bd65eeb7fb32668b7829a0169c3ad7fde"],"state_sha256":"a3ae10184910e73b26418ce3c45a70e18fd57ea329d53ab9798302bbf95c0afd"}