{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:KOEY6WJCFRGI5YNJBDVLFI3ASZ","short_pith_number":"pith:KOEY6WJC","canonical_record":{"source":{"id":"1506.06882","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/publicdomain/","primary_cat":"cs.CV","submitted_at":"2015-06-23T07:19:24Z","cross_cats_sorted":[],"title_canon_sha256":"52c40de9c544a2acd4502ca757180adcf99612b3274bb3cc7a24cd9ffdecc860","abstract_canon_sha256":"f7291a1304b8a7695a90cbe13a4e45c7e3ecfe82502424c4e39238ac8f8cf850"},"schema_version":"1.0"},"canonical_sha256":"53898f59222c4c8ee1a908eab2a360967840362ed7e13f4c4162e4df9b002c9c","source":{"kind":"arxiv","id":"1506.06882","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1506.06882","created_at":"2026-05-18T01:40:55Z"},{"alias_kind":"arxiv_version","alias_value":"1506.06882v1","created_at":"2026-05-18T01:40:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1506.06882","created_at":"2026-05-18T01:40:55Z"},{"alias_kind":"pith_short_12","alias_value":"KOEY6WJCFRGI","created_at":"2026-05-18T12:29:29Z"},{"alias_kind":"pith_short_16","alias_value":"KOEY6WJCFRGI5YNJ","created_at":"2026-05-18T12:29:29Z"},{"alias_kind":"pith_short_8","alias_value":"KOEY6WJC","created_at":"2026-05-18T12:29:29Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:KOEY6WJCFRGI5YNJBDVLFI3ASZ","target":"record","payload":{"canonical_record":{"source":{"id":"1506.06882","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/publicdomain/","primary_cat":"cs.CV","submitted_at":"2015-06-23T07:19:24Z","cross_cats_sorted":[],"title_canon_sha256":"52c40de9c544a2acd4502ca757180adcf99612b3274bb3cc7a24cd9ffdecc860","abstract_canon_sha256":"f7291a1304b8a7695a90cbe13a4e45c7e3ecfe82502424c4e39238ac8f8cf850"},"schema_version":"1.0"},"canonical_sha256":"53898f59222c4c8ee1a908eab2a360967840362ed7e13f4c4162e4df9b002c9c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:40:55.719003Z","signature_b64":"vlXl8W76ToO2uvW2xcrcdR3KUAdmm/YJi5nm/dUl7EOoFke42lnoZrV9H6bIjOASDCq3DQ/jhMf0/kV1RR+uCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"53898f59222c4c8ee1a908eab2a360967840362ed7e13f4c4162e4df9b002c9c","last_reissued_at":"2026-05-18T01:40:55.718256Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:40:55.718256Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1506.06882","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":"2026-05-18T01:40:55Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"IQOjk1uNj1avW1kUffqG3Jz3fQbxTBJxQG+jV4abB3hrYO88cqv4lkS0xtDdmnKQJ+IDvMO8/4w6DTgKgw4iCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T09:54:49.324822Z"},"content_sha256":"ae5c7796c841e1336a5a991e5f46da1257a663e13f78a1e575f4bc345dba3bbf","schema_version":"1.0","event_id":"sha256:ae5c7796c841e1336a5a991e5f46da1257a663e13f78a1e575f4bc345dba3bbf"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:KOEY6WJCFRGI5YNJBDVLFI3ASZ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"SALSA: A Novel Dataset for Multimodal Group Behavior Analysis","license":"http://creativecommons.org/licenses/publicdomain/","headline":"","cross_cats":[],"primary_cat":"cs.CV","authors_text":"Bruno Lepri, Elisa Ricci, Jacopo Staiano, Ligia Batrinca, Nicu Sebe, Oswald Lanz, Ramanathan Subramanian, Xavier Alameda-Pineda","submitted_at":"2015-06-23T07:19:24Z","abstract_excerpt":"Studying free-standing conversational groups (FCGs) in unstructured social settings (e.g., cocktail party ) is gratifying due to the wealth of information available at the group (mining social networks) and individual (recognizing native behavioral and personality traits) levels. However, analyzing social scenes involving FCGs is also highly challenging due to the difficulty in extracting behavioral cues such as target locations, their speaking activity and head/body pose due to crowdedness and presence of extreme occlusions. To this end, we propose SALSA, a novel dataset facilitating multimod"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1506.06882","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":""},"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":"2026-05-18T01:40:55Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"L5dlaAd8QO1KYG5/qhrj5A97/BECZKHeSxozmLllIHesTxork5Nlrmx80h2/Lu2/i6K+5Erl5ApgZfyb0qh7AA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T09:54:49.325537Z"},"content_sha256":"7d730be120558af9b59000585fee90719799fb2ab4c570347df240452289da4e","schema_version":"1.0","event_id":"sha256:7d730be120558af9b59000585fee90719799fb2ab4c570347df240452289da4e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/KOEY6WJCFRGI5YNJBDVLFI3ASZ/bundle.json","state_url":"https://pith.science/pith/KOEY6WJCFRGI5YNJBDVLFI3ASZ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/KOEY6WJCFRGI5YNJBDVLFI3ASZ/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":"2026-05-26T09:54:49Z","links":{"resolver":"https://pith.science/pith/KOEY6WJCFRGI5YNJBDVLFI3ASZ","bundle":"https://pith.science/pith/KOEY6WJCFRGI5YNJBDVLFI3ASZ/bundle.json","state":"https://pith.science/pith/KOEY6WJCFRGI5YNJBDVLFI3ASZ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/KOEY6WJCFRGI5YNJBDVLFI3ASZ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:KOEY6WJCFRGI5YNJBDVLFI3ASZ","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":"f7291a1304b8a7695a90cbe13a4e45c7e3ecfe82502424c4e39238ac8f8cf850","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/publicdomain/","primary_cat":"cs.CV","submitted_at":"2015-06-23T07:19:24Z","title_canon_sha256":"52c40de9c544a2acd4502ca757180adcf99612b3274bb3cc7a24cd9ffdecc860"},"schema_version":"1.0","source":{"id":"1506.06882","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1506.06882","created_at":"2026-05-18T01:40:55Z"},{"alias_kind":"arxiv_version","alias_value":"1506.06882v1","created_at":"2026-05-18T01:40:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1506.06882","created_at":"2026-05-18T01:40:55Z"},{"alias_kind":"pith_short_12","alias_value":"KOEY6WJCFRGI","created_at":"2026-05-18T12:29:29Z"},{"alias_kind":"pith_short_16","alias_value":"KOEY6WJCFRGI5YNJ","created_at":"2026-05-18T12:29:29Z"},{"alias_kind":"pith_short_8","alias_value":"KOEY6WJC","created_at":"2026-05-18T12:29:29Z"}],"graph_snapshots":[{"event_id":"sha256:7d730be120558af9b59000585fee90719799fb2ab4c570347df240452289da4e","target":"graph","created_at":"2026-05-18T01:40:55Z","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":"Studying free-standing conversational groups (FCGs) in unstructured social settings (e.g., cocktail party ) is gratifying due to the wealth of information available at the group (mining social networks) and individual (recognizing native behavioral and personality traits) levels. However, analyzing social scenes involving FCGs is also highly challenging due to the difficulty in extracting behavioral cues such as target locations, their speaking activity and head/body pose due to crowdedness and presence of extreme occlusions. To this end, we propose SALSA, a novel dataset facilitating multimod","authors_text":"Bruno Lepri, Elisa Ricci, Jacopo Staiano, Ligia Batrinca, Nicu Sebe, Oswald Lanz, Ramanathan Subramanian, Xavier Alameda-Pineda","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/publicdomain/","primary_cat":"cs.CV","submitted_at":"2015-06-23T07:19:24Z","title":"SALSA: A Novel Dataset for Multimodal Group Behavior Analysis"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1506.06882","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:ae5c7796c841e1336a5a991e5f46da1257a663e13f78a1e575f4bc345dba3bbf","target":"record","created_at":"2026-05-18T01:40:55Z","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":"f7291a1304b8a7695a90cbe13a4e45c7e3ecfe82502424c4e39238ac8f8cf850","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/publicdomain/","primary_cat":"cs.CV","submitted_at":"2015-06-23T07:19:24Z","title_canon_sha256":"52c40de9c544a2acd4502ca757180adcf99612b3274bb3cc7a24cd9ffdecc860"},"schema_version":"1.0","source":{"id":"1506.06882","kind":"arxiv","version":1}},"canonical_sha256":"53898f59222c4c8ee1a908eab2a360967840362ed7e13f4c4162e4df9b002c9c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"53898f59222c4c8ee1a908eab2a360967840362ed7e13f4c4162e4df9b002c9c","first_computed_at":"2026-05-18T01:40:55.718256Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:40:55.718256Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"vlXl8W76ToO2uvW2xcrcdR3KUAdmm/YJi5nm/dUl7EOoFke42lnoZrV9H6bIjOASDCq3DQ/jhMf0/kV1RR+uCg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:40:55.719003Z","signed_message":"canonical_sha256_bytes"},"source_id":"1506.06882","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ae5c7796c841e1336a5a991e5f46da1257a663e13f78a1e575f4bc345dba3bbf","sha256:7d730be120558af9b59000585fee90719799fb2ab4c570347df240452289da4e"],"state_sha256":"62df1e4230f437df353919120feec43ccccd3713ab8e128b5207ce8c658563bc"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"flb2NvkjNpwE8wH2qZ36blk1bEM83j/HYXPj7bUnEBzBVK2EFtFEWbszSbpjQcyzxM+Tw35EPdCFo6vsjELtDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T09:54:49.329242Z","bundle_sha256":"6a62867c8e955b1af27fde7caa3e1d85e4a12d6c53cb54ada0467d97e248bf75"}}