{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:WCOZ7JBWBYIHVTPFFYERMF4I6R","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":"ed5708457adce3bd3f85fbb75e09d485038e110b4533d54adcdb4c211665ec28","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2015-08-31T00:56:20Z","title_canon_sha256":"f510db8f23313a26e3ed2ba24b45395956b427fa54edf525eb8202da4ed2ef86"},"schema_version":"1.0","source":{"id":"1508.07654","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1508.07654","created_at":"2026-05-18T01:34:31Z"},{"alias_kind":"arxiv_version","alias_value":"1508.07654v1","created_at":"2026-05-18T01:34:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1508.07654","created_at":"2026-05-18T01:34:31Z"},{"alias_kind":"pith_short_12","alias_value":"WCOZ7JBWBYIH","created_at":"2026-05-18T12:29:47Z"},{"alias_kind":"pith_short_16","alias_value":"WCOZ7JBWBYIHVTPF","created_at":"2026-05-18T12:29:47Z"},{"alias_kind":"pith_short_8","alias_value":"WCOZ7JBW","created_at":"2026-05-18T12:29:47Z"}],"graph_snapshots":[{"event_id":"sha256:74cee8743e842e5e8fcdb6fb5c1da8898124226b933432011fb806909a9444a6","target":"graph","created_at":"2026-05-18T01:34:31Z","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":"Realistic videos of human actions exhibit rich spatiotemporal structures at multiple levels of granularity: an action can always be decomposed into multiple finer-grained elements in both space and time. To capture this intuition, we propose to represent videos by a hierarchy of mid-level action elements (MAEs), where each MAE corresponds to an action-related spatiotemporal segment in the video. We introduce an unsupervised method to generate this representation from videos. Our method is capable of distinguishing action-related segments from background segments and representing actions at mul","authors_text":"Amir Roshan Zamir, Silvio Savarese, Tian Lan, Yuke Zhu","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2015-08-31T00:56:20Z","title":"Action Recognition by Hierarchical Mid-level Action Elements"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1508.07654","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:a0145b94b7b3d457aa41430dcd28996b4b596e17df6764608b8cc6ece025659a","target":"record","created_at":"2026-05-18T01:34:31Z","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":"ed5708457adce3bd3f85fbb75e09d485038e110b4533d54adcdb4c211665ec28","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2015-08-31T00:56:20Z","title_canon_sha256":"f510db8f23313a26e3ed2ba24b45395956b427fa54edf525eb8202da4ed2ef86"},"schema_version":"1.0","source":{"id":"1508.07654","kind":"arxiv","version":1}},"canonical_sha256":"b09d9fa4360e107acde52e09161788f45ff862b9cebfee664629859e3d89262d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b09d9fa4360e107acde52e09161788f45ff862b9cebfee664629859e3d89262d","first_computed_at":"2026-05-18T01:34:31.733664Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:34:31.733664Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"yaqnlOxsW6eNgcIYskfq7FMVfiHnUZXBHUC0D/Br3cpFaMfjxUJLhGPR3q27D+LKwxzLg9xQwVYCQqkyTCf2Dw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:34:31.734141Z","signed_message":"canonical_sha256_bytes"},"source_id":"1508.07654","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a0145b94b7b3d457aa41430dcd28996b4b596e17df6764608b8cc6ece025659a","sha256:74cee8743e842e5e8fcdb6fb5c1da8898124226b933432011fb806909a9444a6"],"state_sha256":"a9779549de4542041812a9a675845669e94779da47a8699964971dbd2f94a6d5"}