{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:KUCKCC4HRF3ONOT53DEPNOYGGR","short_pith_number":"pith:KUCKCC4H","canonical_record":{"source":{"id":"1506.02328","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2015-06-08T00:34:51Z","cross_cats_sorted":[],"title_canon_sha256":"fc383147b58e28a50477e13479e8af384282a73b2d69d84ba870832dbc1be32d","abstract_canon_sha256":"cfd955bbfa9a4e9c85d0ba51a6f401eca82d882f2f56376237df6fa13aa142fa"},"schema_version":"1.0"},"canonical_sha256":"5504a10b878976e6ba7dd8c8f6bb0634672ef74cb4743c44e67e5227d98620ea","source":{"kind":"arxiv","id":"1506.02328","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1506.02328","created_at":"2026-05-18T01:35:15Z"},{"alias_kind":"arxiv_version","alias_value":"1506.02328v2","created_at":"2026-05-18T01:35:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1506.02328","created_at":"2026-05-18T01:35:15Z"},{"alias_kind":"pith_short_12","alias_value":"KUCKCC4HRF3O","created_at":"2026-05-18T12:29:29Z"},{"alias_kind":"pith_short_16","alias_value":"KUCKCC4HRF3ONOT5","created_at":"2026-05-18T12:29:29Z"},{"alias_kind":"pith_short_8","alias_value":"KUCKCC4H","created_at":"2026-05-18T12:29:29Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:KUCKCC4HRF3ONOT53DEPNOYGGR","target":"record","payload":{"canonical_record":{"source":{"id":"1506.02328","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2015-06-08T00:34:51Z","cross_cats_sorted":[],"title_canon_sha256":"fc383147b58e28a50477e13479e8af384282a73b2d69d84ba870832dbc1be32d","abstract_canon_sha256":"cfd955bbfa9a4e9c85d0ba51a6f401eca82d882f2f56376237df6fa13aa142fa"},"schema_version":"1.0"},"canonical_sha256":"5504a10b878976e6ba7dd8c8f6bb0634672ef74cb4743c44e67e5227d98620ea","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:35:15.851057Z","signature_b64":"ayV0td1pi085JcgUkFZfuKA74lCg1aBLmcOJf3eE7nQVjqYcmIgXQx70Ldlpp2ZDPFnahZi0ywGBIIPRA6zvBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"5504a10b878976e6ba7dd8c8f6bb0634672ef74cb4743c44e67e5227d98620ea","last_reissued_at":"2026-05-18T01:35:15.850563Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:35:15.850563Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1506.02328","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":"2026-05-18T01:35:15Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"M+ME+W12QlP35s67zIcys84fuTxjN6GyrvwvZSFVErC48tEGdkdMaigPQWMM99yLtE1EVzgc7nJcLZfy/K8oDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T01:57:45.874448Z"},"content_sha256":"1b4104dc437bff2fb31d8bc1b046c89b42ee91582025d9896257055616c959e0","schema_version":"1.0","event_id":"sha256:1b4104dc437bff2fb31d8bc1b046c89b42ee91582025d9896257055616c959e0"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:KUCKCC4HRF3ONOT53DEPNOYGGR","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"EventNet: A Large Scale Structured Concept Library for Complex Event Detection in Video","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.CV","authors_text":"Dong Liu, Guangnan Ye, Hongliang Xu, Shih-Fu Chang, Yitong Li","submitted_at":"2015-06-08T00:34:51Z","abstract_excerpt":"Event-specific concepts are the semantic concepts designed for the events of interest, which can be used as a mid-level representation of complex events in videos. Existing methods only focus on defining event-specific concepts for a small number of predefined events, but cannot handle novel unseen events. This motivates us to build a large scale event-specific concept library that covers as many real-world events and their concepts as possible. Specifically, we choose WikiHow, an online forum containing a large number of how-to articles on human daily life events. We perform a coarse-to-fine "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1506.02328","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":""},"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":"2026-05-18T01:35:15Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6VQTTxV6uiZFFXQpjXuSYKI1QriDHyp0iz8+xmiM2f7Uw0wp99XVRafsAGa7Ba0X1BMMEYMPwgSStZkxi8qwAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T01:57:45.874798Z"},"content_sha256":"2a79021ef7366246a563c65d37346eb8f51bb8ace0ae8699e4225e7a273116f4","schema_version":"1.0","event_id":"sha256:2a79021ef7366246a563c65d37346eb8f51bb8ace0ae8699e4225e7a273116f4"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/KUCKCC4HRF3ONOT53DEPNOYGGR/bundle.json","state_url":"https://pith.science/pith/KUCKCC4HRF3ONOT53DEPNOYGGR/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/KUCKCC4HRF3ONOT53DEPNOYGGR/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":"2026-05-28T01:57:45Z","links":{"resolver":"https://pith.science/pith/KUCKCC4HRF3ONOT53DEPNOYGGR","bundle":"https://pith.science/pith/KUCKCC4HRF3ONOT53DEPNOYGGR/bundle.json","state":"https://pith.science/pith/KUCKCC4HRF3ONOT53DEPNOYGGR/state.json","well_known_bundle":"https://pith.science/.well-known/pith/KUCKCC4HRF3ONOT53DEPNOYGGR/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:KUCKCC4HRF3ONOT53DEPNOYGGR","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":"cfd955bbfa9a4e9c85d0ba51a6f401eca82d882f2f56376237df6fa13aa142fa","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2015-06-08T00:34:51Z","title_canon_sha256":"fc383147b58e28a50477e13479e8af384282a73b2d69d84ba870832dbc1be32d"},"schema_version":"1.0","source":{"id":"1506.02328","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1506.02328","created_at":"2026-05-18T01:35:15Z"},{"alias_kind":"arxiv_version","alias_value":"1506.02328v2","created_at":"2026-05-18T01:35:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1506.02328","created_at":"2026-05-18T01:35:15Z"},{"alias_kind":"pith_short_12","alias_value":"KUCKCC4HRF3O","created_at":"2026-05-18T12:29:29Z"},{"alias_kind":"pith_short_16","alias_value":"KUCKCC4HRF3ONOT5","created_at":"2026-05-18T12:29:29Z"},{"alias_kind":"pith_short_8","alias_value":"KUCKCC4H","created_at":"2026-05-18T12:29:29Z"}],"graph_snapshots":[{"event_id":"sha256:2a79021ef7366246a563c65d37346eb8f51bb8ace0ae8699e4225e7a273116f4","target":"graph","created_at":"2026-05-18T01:35:15Z","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":"Event-specific concepts are the semantic concepts designed for the events of interest, which can be used as a mid-level representation of complex events in videos. Existing methods only focus on defining event-specific concepts for a small number of predefined events, but cannot handle novel unseen events. This motivates us to build a large scale event-specific concept library that covers as many real-world events and their concepts as possible. Specifically, we choose WikiHow, an online forum containing a large number of how-to articles on human daily life events. We perform a coarse-to-fine ","authors_text":"Dong Liu, Guangnan Ye, Hongliang Xu, Shih-Fu Chang, Yitong Li","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2015-06-08T00:34:51Z","title":"EventNet: A Large Scale Structured Concept Library for Complex Event Detection in Video"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1506.02328","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":"sha256:1b4104dc437bff2fb31d8bc1b046c89b42ee91582025d9896257055616c959e0","target":"record","created_at":"2026-05-18T01:35:15Z","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":"cfd955bbfa9a4e9c85d0ba51a6f401eca82d882f2f56376237df6fa13aa142fa","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2015-06-08T00:34:51Z","title_canon_sha256":"fc383147b58e28a50477e13479e8af384282a73b2d69d84ba870832dbc1be32d"},"schema_version":"1.0","source":{"id":"1506.02328","kind":"arxiv","version":2}},"canonical_sha256":"5504a10b878976e6ba7dd8c8f6bb0634672ef74cb4743c44e67e5227d98620ea","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"5504a10b878976e6ba7dd8c8f6bb0634672ef74cb4743c44e67e5227d98620ea","first_computed_at":"2026-05-18T01:35:15.850563Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:35:15.850563Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ayV0td1pi085JcgUkFZfuKA74lCg1aBLmcOJf3eE7nQVjqYcmIgXQx70Ldlpp2ZDPFnahZi0ywGBIIPRA6zvBA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:35:15.851057Z","signed_message":"canonical_sha256_bytes"},"source_id":"1506.02328","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1b4104dc437bff2fb31d8bc1b046c89b42ee91582025d9896257055616c959e0","sha256:2a79021ef7366246a563c65d37346eb8f51bb8ace0ae8699e4225e7a273116f4"],"state_sha256":"ecd32d758072d370ac5addcd1862c0a3773d6260ea150da163e1bc9d67bb1550"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"zecMy6dkmV87bdJGAX/IGsur/oxO0pcH78FVhU35H6+Tp2q9NV/MgKk1XHgSVrdvY7O3SqYd6YW3FtJR+2RTCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T01:57:45.876771Z","bundle_sha256":"42fd03d84d7898210918aa790f854858682ed728425e2bc2702a02afc4104681"}}