{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2024:DZFQ5SPLJQXKOSMHEBKPHLHBZS","short_pith_number":"pith:DZFQ5SPL","canonical_record":{"source":{"id":"2412.14833","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2024-12-19T13:21:04Z","cross_cats_sorted":[],"title_canon_sha256":"511eeaa1f74d32fad81e6b8f74228ae274477ad943110259efe38afb18c57b4b","abstract_canon_sha256":"a53c54a8e878ae74b28b0fd45f87742792978d6263d285429299cf0c98a5114a"},"schema_version":"1.0"},"canonical_sha256":"1e4b0ec9eb4c2ea749872054f3ace1cc9197bd5fad69c7d9c589ab300680826d","source":{"kind":"arxiv","id":"2412.14833","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2412.14833","created_at":"2026-07-05T10:27:22Z"},{"alias_kind":"arxiv_version","alias_value":"2412.14833v2","created_at":"2026-07-05T10:27:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2412.14833","created_at":"2026-07-05T10:27:22Z"},{"alias_kind":"pith_short_12","alias_value":"DZFQ5SPLJQXK","created_at":"2026-07-05T10:27:22Z"},{"alias_kind":"pith_short_16","alias_value":"DZFQ5SPLJQXKOSMH","created_at":"2026-07-05T10:27:22Z"},{"alias_kind":"pith_short_8","alias_value":"DZFQ5SPL","created_at":"2026-07-05T10:27:22Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2024:DZFQ5SPLJQXKOSMHEBKPHLHBZS","target":"record","payload":{"canonical_record":{"source":{"id":"2412.14833","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2024-12-19T13:21:04Z","cross_cats_sorted":[],"title_canon_sha256":"511eeaa1f74d32fad81e6b8f74228ae274477ad943110259efe38afb18c57b4b","abstract_canon_sha256":"a53c54a8e878ae74b28b0fd45f87742792978d6263d285429299cf0c98a5114a"},"schema_version":"1.0"},"canonical_sha256":"1e4b0ec9eb4c2ea749872054f3ace1cc9197bd5fad69c7d9c589ab300680826d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T10:27:22.273460Z","signature_b64":"n9NMm4YSXwasMHeI/Nw4iVx+QZgACORcXGWPAAotTF86OmuryWPanlTiqEbAz0Da/IL3C19V0SpJzOVIgGoYCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"1e4b0ec9eb4c2ea749872054f3ace1cc9197bd5fad69c7d9c589ab300680826d","last_reissued_at":"2026-07-05T10:27:22.272932Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T10:27:22.272932Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2412.14833","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T10:27:22Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"tYwfTRZhuBZEZYBlG6IJGVqYnP5ffZUnLXTYaGnBi30oYr0WnYeJgm1DwhmVA5gG69sNcCalI8MeSkkUbCEyDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-17T18:34:09.193327Z"},"content_sha256":"59f164b3311fc174a368bc68cfe7e895990587a20bcaad009cc78af71c2bd02b","schema_version":"1.0","event_id":"sha256:59f164b3311fc174a368bc68cfe7e895990587a20bcaad009cc78af71c2bd02b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2024:DZFQ5SPLJQXKOSMHEBKPHLHBZS","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Synchronized and Fine-Grained Head for Skeleton-Based Ambiguous Action Recognition","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.CV","authors_text":"Haiyang Liu, Hao Huang, Siyu Chen, Yujie Lin","submitted_at":"2024-12-19T13:21:04Z","abstract_excerpt":"Skeleton-based action recognition using GCNs has achieved remarkable performance, but recognizing ambiguous actions, such as \"waving\" and \"saluting\", remains a significant challenge. Existing methods typically rely on a serial combination of GCNs and TCNs, where spatial and temporal features are extracted independently, leading to an unbalanced spatial-temporal information, which hinders accurate action recognition. Moreover, existing methods for ambiguous actions often overemphasize local details, resulting in the loss of crucial global context, which further complicates the task of different"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2412.14833","kind":"arxiv","version":2},"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/2412.14833/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":"2026-07-05T10:27:22Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Bo58DsEr2vTDo38FpIKo7ifUvKo7mdBywkOftyY3SDSlSoCQ87ir5xUzrHbSjwB7qbED+1f3zEm46HBy6XZgAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-17T18:34:09.193941Z"},"content_sha256":"7423dc050b4dbc530bb56a916798510e3593e66660249b70229230c0c0dc8ea3","schema_version":"1.0","event_id":"sha256:7423dc050b4dbc530bb56a916798510e3593e66660249b70229230c0c0dc8ea3"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/DZFQ5SPLJQXKOSMHEBKPHLHBZS/bundle.json","state_url":"https://pith.science/pith/DZFQ5SPLJQXKOSMHEBKPHLHBZS/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/DZFQ5SPLJQXKOSMHEBKPHLHBZS/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":"2026-08-17T18:34:09Z","links":{"resolver":"https://pith.science/pith/DZFQ5SPLJQXKOSMHEBKPHLHBZS","bundle":"https://pith.science/pith/DZFQ5SPLJQXKOSMHEBKPHLHBZS/bundle.json","state":"https://pith.science/pith/DZFQ5SPLJQXKOSMHEBKPHLHBZS/state.json","well_known_bundle":"https://pith.science/.well-known/pith/DZFQ5SPLJQXKOSMHEBKPHLHBZS/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:DZFQ5SPLJQXKOSMHEBKPHLHBZS","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":"a53c54a8e878ae74b28b0fd45f87742792978d6263d285429299cf0c98a5114a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2024-12-19T13:21:04Z","title_canon_sha256":"511eeaa1f74d32fad81e6b8f74228ae274477ad943110259efe38afb18c57b4b"},"schema_version":"1.0","source":{"id":"2412.14833","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2412.14833","created_at":"2026-07-05T10:27:22Z"},{"alias_kind":"arxiv_version","alias_value":"2412.14833v2","created_at":"2026-07-05T10:27:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2412.14833","created_at":"2026-07-05T10:27:22Z"},{"alias_kind":"pith_short_12","alias_value":"DZFQ5SPLJQXK","created_at":"2026-07-05T10:27:22Z"},{"alias_kind":"pith_short_16","alias_value":"DZFQ5SPLJQXKOSMH","created_at":"2026-07-05T10:27:22Z"},{"alias_kind":"pith_short_8","alias_value":"DZFQ5SPL","created_at":"2026-07-05T10:27:22Z"}],"graph_snapshots":[{"event_id":"sha256:7423dc050b4dbc530bb56a916798510e3593e66660249b70229230c0c0dc8ea3","target":"graph","created_at":"2026-07-05T10:27:22Z","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/2412.14833/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Skeleton-based action recognition using GCNs has achieved remarkable performance, but recognizing ambiguous actions, such as \"waving\" and \"saluting\", remains a significant challenge. Existing methods typically rely on a serial combination of GCNs and TCNs, where spatial and temporal features are extracted independently, leading to an unbalanced spatial-temporal information, which hinders accurate action recognition. Moreover, existing methods for ambiguous actions often overemphasize local details, resulting in the loss of crucial global context, which further complicates the task of different","authors_text":"Haiyang Liu, Hao Huang, Siyu Chen, Yujie Lin","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2024-12-19T13:21:04Z","title":"Synchronized and Fine-Grained Head for Skeleton-Based Ambiguous Action Recognition"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2412.14833","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":"sha256:59f164b3311fc174a368bc68cfe7e895990587a20bcaad009cc78af71c2bd02b","target":"record","created_at":"2026-07-05T10:27:22Z","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":"a53c54a8e878ae74b28b0fd45f87742792978d6263d285429299cf0c98a5114a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2024-12-19T13:21:04Z","title_canon_sha256":"511eeaa1f74d32fad81e6b8f74228ae274477ad943110259efe38afb18c57b4b"},"schema_version":"1.0","source":{"id":"2412.14833","kind":"arxiv","version":2}},"canonical_sha256":"1e4b0ec9eb4c2ea749872054f3ace1cc9197bd5fad69c7d9c589ab300680826d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1e4b0ec9eb4c2ea749872054f3ace1cc9197bd5fad69c7d9c589ab300680826d","first_computed_at":"2026-07-05T10:27:22.272932Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T10:27:22.272932Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"n9NMm4YSXwasMHeI/Nw4iVx+QZgACORcXGWPAAotTF86OmuryWPanlTiqEbAz0Da/IL3C19V0SpJzOVIgGoYCA==","signature_status":"signed_v1","signed_at":"2026-07-05T10:27:22.273460Z","signed_message":"canonical_sha256_bytes"},"source_id":"2412.14833","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:59f164b3311fc174a368bc68cfe7e895990587a20bcaad009cc78af71c2bd02b","sha256:7423dc050b4dbc530bb56a916798510e3593e66660249b70229230c0c0dc8ea3"],"state_sha256":"1c51fea0c28b379ee014366ec1ad2bf21ddbb6c6214476b960547565653d167c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hbJh8p/+IOruX2VMTRnEr+bSIbM2GGFygUzirKoSiJu1eLy6T3urzxrLDFxG//bCdFHOMBVKuiIduBf+9hf+Cw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-17T18:34:09.197384Z","bundle_sha256":"5972469a8c714db513b6815da86d038b4d37d5f1cd51da1506e91faae6e0f027"}}