{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2023:ESYSFUYZS2PQCYFNX2JBXPP6JH","short_pith_number":"pith:ESYSFUYZ","canonical_record":{"source":{"id":"2308.08256","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2023-08-16T09:47:52Z","cross_cats_sorted":["cs.HC"],"title_canon_sha256":"abaecab9b2830f85cd7ff8342aa24cb609db8cb3a2d8cd6f60787d462d285041","abstract_canon_sha256":"ed5a8f259b85a8946d20b720a0dc02482d9310d12a0bd7f029ade435b5da0bed"},"schema_version":"1.0"},"canonical_sha256":"24b122d319969f0160adbe921bbdfe49ef470e7dc17318eca5cdd23e94b902f1","source":{"kind":"arxiv","id":"2308.08256","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2308.08256","created_at":"2026-07-05T06:41:56Z"},{"alias_kind":"arxiv_version","alias_value":"2308.08256v1","created_at":"2026-07-05T06:41:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2308.08256","created_at":"2026-07-05T06:41:56Z"},{"alias_kind":"pith_short_12","alias_value":"ESYSFUYZS2PQ","created_at":"2026-07-05T06:41:56Z"},{"alias_kind":"pith_short_16","alias_value":"ESYSFUYZS2PQCYFN","created_at":"2026-07-05T06:41:56Z"},{"alias_kind":"pith_short_8","alias_value":"ESYSFUYZ","created_at":"2026-07-05T06:41:56Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2023:ESYSFUYZS2PQCYFNX2JBXPP6JH","target":"record","payload":{"canonical_record":{"source":{"id":"2308.08256","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2023-08-16T09:47:52Z","cross_cats_sorted":["cs.HC"],"title_canon_sha256":"abaecab9b2830f85cd7ff8342aa24cb609db8cb3a2d8cd6f60787d462d285041","abstract_canon_sha256":"ed5a8f259b85a8946d20b720a0dc02482d9310d12a0bd7f029ade435b5da0bed"},"schema_version":"1.0"},"canonical_sha256":"24b122d319969f0160adbe921bbdfe49ef470e7dc17318eca5cdd23e94b902f1","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T06:41:56.744896Z","signature_b64":"1vUQbAEH+2dIcjq96pHU6Ayx0oiqK77c77vTyf25QrhDCJhqgGfwi4EeyrVkNpBfACmUsBkr7s6ItG7n/suFBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"24b122d319969f0160adbe921bbdfe49ef470e7dc17318eca5cdd23e94b902f1","last_reissued_at":"2026-07-05T06:41:56.744458Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T06:41:56.744458Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2308.08256","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":"2026-07-05T06:41:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"bArWCwKciV82bFgSk+8UtNmhgPR6lI+3k03Bwi/NxYgVBxJywQ2XQM0bl+1GdN8Q3jUOngLNU9yrP+sQF6TxDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-19T02:11:46.306099Z"},"content_sha256":"29867b8f0a050d86b73620818208cfe104f5323c1491c695937847705b256133","schema_version":"1.0","event_id":"sha256:29867b8f0a050d86b73620818208cfe104f5323c1491c695937847705b256133"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2023:ESYSFUYZS2PQCYFNX2JBXPP6JH","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"MultiMediate'23: Engagement Estimation and Bodily Behaviour Recognition in Social Interactions","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.HC"],"primary_cat":"cs.CV","authors_text":"Alexander Heimerl, Andreas Bulling, Dominike Thomas, Dominik Schiller, Elisabeth Andr\\'e, Fran\\c{c}ois Br\\'emond, Jan Alexandersson, Michael Dietz, Michal Balazia, Mohammed Guermal, Philipp M\\\"uller, Tobias Baur","submitted_at":"2023-08-16T09:47:52Z","abstract_excerpt":"Automatic analysis of human behaviour is a fundamental prerequisite for the creation of machines that can effectively interact with- and support humans in social interactions. In MultiMediate'23, we address two key human social behaviour analysis tasks for the first time in a controlled challenge: engagement estimation and bodily behaviour recognition in social interactions. This paper describes the MultiMediate'23 challenge and presents novel sets of annotations for both tasks. For engagement estimation we collected novel annotations on the NOvice eXpert Interaction (NOXI) database. For bodil"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2308.08256","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/2308.08256/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":"2026-07-05T06:41:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"oHv8dTbpIxxC1pzVNUCHPjZyQIlJIChsKsjWgQ9TcQR95ZyvPqAgTI1DDtLIxzrkNHhsi2EbRH5+Dpf+LeHoBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-19T02:11:46.306636Z"},"content_sha256":"3ee037e75f453ecdb34064606e4a1465183f2b92269874a58e99ef0b7148f509","schema_version":"1.0","event_id":"sha256:3ee037e75f453ecdb34064606e4a1465183f2b92269874a58e99ef0b7148f509"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ESYSFUYZS2PQCYFNX2JBXPP6JH/bundle.json","state_url":"https://pith.science/pith/ESYSFUYZS2PQCYFNX2JBXPP6JH/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ESYSFUYZS2PQCYFNX2JBXPP6JH/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":"2026-08-19T02:11:46Z","links":{"resolver":"https://pith.science/pith/ESYSFUYZS2PQCYFNX2JBXPP6JH","bundle":"https://pith.science/pith/ESYSFUYZS2PQCYFNX2JBXPP6JH/bundle.json","state":"https://pith.science/pith/ESYSFUYZS2PQCYFNX2JBXPP6JH/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ESYSFUYZS2PQCYFNX2JBXPP6JH/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:ESYSFUYZS2PQCYFNX2JBXPP6JH","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":"ed5a8f259b85a8946d20b720a0dc02482d9310d12a0bd7f029ade435b5da0bed","cross_cats_sorted":["cs.HC"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2023-08-16T09:47:52Z","title_canon_sha256":"abaecab9b2830f85cd7ff8342aa24cb609db8cb3a2d8cd6f60787d462d285041"},"schema_version":"1.0","source":{"id":"2308.08256","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2308.08256","created_at":"2026-07-05T06:41:56Z"},{"alias_kind":"arxiv_version","alias_value":"2308.08256v1","created_at":"2026-07-05T06:41:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2308.08256","created_at":"2026-07-05T06:41:56Z"},{"alias_kind":"pith_short_12","alias_value":"ESYSFUYZS2PQ","created_at":"2026-07-05T06:41:56Z"},{"alias_kind":"pith_short_16","alias_value":"ESYSFUYZS2PQCYFN","created_at":"2026-07-05T06:41:56Z"},{"alias_kind":"pith_short_8","alias_value":"ESYSFUYZ","created_at":"2026-07-05T06:41:56Z"}],"graph_snapshots":[{"event_id":"sha256:3ee037e75f453ecdb34064606e4a1465183f2b92269874a58e99ef0b7148f509","target":"graph","created_at":"2026-07-05T06:41:56Z","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/2308.08256/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Automatic analysis of human behaviour is a fundamental prerequisite for the creation of machines that can effectively interact with- and support humans in social interactions. In MultiMediate'23, we address two key human social behaviour analysis tasks for the first time in a controlled challenge: engagement estimation and bodily behaviour recognition in social interactions. This paper describes the MultiMediate'23 challenge and presents novel sets of annotations for both tasks. For engagement estimation we collected novel annotations on the NOvice eXpert Interaction (NOXI) database. For bodil","authors_text":"Alexander Heimerl, Andreas Bulling, Dominike Thomas, Dominik Schiller, Elisabeth Andr\\'e, Fran\\c{c}ois Br\\'emond, Jan Alexandersson, Michael Dietz, Michal Balazia, Mohammed Guermal, Philipp M\\\"uller, Tobias Baur","cross_cats":["cs.HC"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2023-08-16T09:47:52Z","title":"MultiMediate'23: Engagement Estimation and Bodily Behaviour Recognition in Social Interactions"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2308.08256","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":"sha256:29867b8f0a050d86b73620818208cfe104f5323c1491c695937847705b256133","target":"record","created_at":"2026-07-05T06:41:56Z","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":"ed5a8f259b85a8946d20b720a0dc02482d9310d12a0bd7f029ade435b5da0bed","cross_cats_sorted":["cs.HC"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2023-08-16T09:47:52Z","title_canon_sha256":"abaecab9b2830f85cd7ff8342aa24cb609db8cb3a2d8cd6f60787d462d285041"},"schema_version":"1.0","source":{"id":"2308.08256","kind":"arxiv","version":1}},"canonical_sha256":"24b122d319969f0160adbe921bbdfe49ef470e7dc17318eca5cdd23e94b902f1","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"24b122d319969f0160adbe921bbdfe49ef470e7dc17318eca5cdd23e94b902f1","first_computed_at":"2026-07-05T06:41:56.744458Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T06:41:56.744458Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"1vUQbAEH+2dIcjq96pHU6Ayx0oiqK77c77vTyf25QrhDCJhqgGfwi4EeyrVkNpBfACmUsBkr7s6ItG7n/suFBg==","signature_status":"signed_v1","signed_at":"2026-07-05T06:41:56.744896Z","signed_message":"canonical_sha256_bytes"},"source_id":"2308.08256","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:29867b8f0a050d86b73620818208cfe104f5323c1491c695937847705b256133","sha256:3ee037e75f453ecdb34064606e4a1465183f2b92269874a58e99ef0b7148f509"],"state_sha256":"977156dc780179652dd62f113dd8033c2af71a84e48d583d4ba3660caff5a354"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+sGjZMAz3LDW6FDJY8PpbwhyOzcL2bk3J/pG4qJYSOjsGK77KOPMfuvl2b2Sv8LAIs+LrMss4hhvSdkNkR4TAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-19T02:11:46.313666Z","bundle_sha256":"22b92558add1ef00e5846454d19089197e094f5f392bc42e84ddb4891711d6ed"}}