{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2023:46SNVLUFG2TVAWJS5NANFUPTAL","short_pith_number":"pith:46SNVLUF","canonical_record":{"source":{"id":"2312.15041","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.HC","submitted_at":"2023-12-22T20:11:27Z","cross_cats_sorted":["cs.SI"],"title_canon_sha256":"8ef35cb4288c0ca14da412cefa42be41bd3000a8288a6353b60d7e9d407caead","abstract_canon_sha256":"a41e52a48a30057625eda69574c640e74e6ac53da06d84fff66af7b512fa7cd7"},"schema_version":"1.0"},"canonical_sha256":"e7a4daae8536a7505932eb40d2d1f302c4ae92699500c59094c509b6ed5c7d8d","source":{"kind":"arxiv","id":"2312.15041","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2312.15041","created_at":"2026-07-05T07:31:36Z"},{"alias_kind":"arxiv_version","alias_value":"2312.15041v2","created_at":"2026-07-05T07:31:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2312.15041","created_at":"2026-07-05T07:31:36Z"},{"alias_kind":"pith_short_12","alias_value":"46SNVLUFG2TV","created_at":"2026-07-05T07:31:36Z"},{"alias_kind":"pith_short_16","alias_value":"46SNVLUFG2TVAWJS","created_at":"2026-07-05T07:31:36Z"},{"alias_kind":"pith_short_8","alias_value":"46SNVLUF","created_at":"2026-07-05T07:31:36Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2023:46SNVLUFG2TVAWJS5NANFUPTAL","target":"record","payload":{"canonical_record":{"source":{"id":"2312.15041","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.HC","submitted_at":"2023-12-22T20:11:27Z","cross_cats_sorted":["cs.SI"],"title_canon_sha256":"8ef35cb4288c0ca14da412cefa42be41bd3000a8288a6353b60d7e9d407caead","abstract_canon_sha256":"a41e52a48a30057625eda69574c640e74e6ac53da06d84fff66af7b512fa7cd7"},"schema_version":"1.0"},"canonical_sha256":"e7a4daae8536a7505932eb40d2d1f302c4ae92699500c59094c509b6ed5c7d8d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T07:31:36.199227Z","signature_b64":"7wHxq/Z16OKA7QsS0my1vncEMm+22oH4Tk1jHy/TBJ9BY/W21Hb74Jxb+3KSxxViptfmAWKQm0mSC6znAzb3Cg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e7a4daae8536a7505932eb40d2d1f302c4ae92699500c59094c509b6ed5c7d8d","last_reissued_at":"2026-07-05T07:31:36.198754Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T07:31:36.198754Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2312.15041","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":"2026-07-05T07:31:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"LpY+rC7u/rzN2ZWwfsYe+6WFUMwexC8OrSAdQjvHLESJ2rYVlIcBDTZxy+iB4lUCZ/zCaoDedKz0E8dDoUVvBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-23T02:20:55.867696Z"},"content_sha256":"16f5223ab0ca84e3eca325280f623cc0a69cb666b2202be45b68746ed0b82ef4","schema_version":"1.0","event_id":"sha256:16f5223ab0ca84e3eca325280f623cc0a69cb666b2202be45b68746ed0b82ef4"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2023:46SNVLUFG2TVAWJS5NANFUPTAL","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"W4-Groups: Modeling the Who, What, When and Where of Group Behavior via Mobility Sensing","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["cs.SI"],"primary_cat":"cs.HC","authors_text":"Akanksha Atrey, Camellia Zakaria, Prashant Shenoy, Rajesh Balan","submitted_at":"2023-12-22T20:11:27Z","abstract_excerpt":"Human social interactions occur in group settings of varying sizes and locations, depending on the type of social activity. The ability to distinguish group formations based on their purposes transforms how group detection mechanisms function. Not only should such tools support the effective detection of serendipitous encounters, but they can derive categories of relation types among users. Determining who is involved, what activity is performed, and when and where the activity occurs are critical to understanding group processes in greater depth, including supporting goal-oriented application"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2312.15041","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/2312.15041/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":"2026-07-05T07:31:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"NWXMv6G482XL6m3MGr2JAnzasg4gBoS6MNKWIjkej4qyrvqPYUohi12DblPpvqGTBkMem8ZQigLMhanmkzd4DQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-23T02:20:55.868626Z"},"content_sha256":"31983e3b7035f4e0beb8699a6e8eaa861bc5a6e5e8d78fdeb5dc456b59f039e9","schema_version":"1.0","event_id":"sha256:31983e3b7035f4e0beb8699a6e8eaa861bc5a6e5e8d78fdeb5dc456b59f039e9"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/46SNVLUFG2TVAWJS5NANFUPTAL/bundle.json","state_url":"https://pith.science/pith/46SNVLUFG2TVAWJS5NANFUPTAL/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/46SNVLUFG2TVAWJS5NANFUPTAL/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":"2026-08-23T02:20:55Z","links":{"resolver":"https://pith.science/pith/46SNVLUFG2TVAWJS5NANFUPTAL","bundle":"https://pith.science/pith/46SNVLUFG2TVAWJS5NANFUPTAL/bundle.json","state":"https://pith.science/pith/46SNVLUFG2TVAWJS5NANFUPTAL/state.json","well_known_bundle":"https://pith.science/.well-known/pith/46SNVLUFG2TVAWJS5NANFUPTAL/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:46SNVLUFG2TVAWJS5NANFUPTAL","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":"a41e52a48a30057625eda69574c640e74e6ac53da06d84fff66af7b512fa7cd7","cross_cats_sorted":["cs.SI"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.HC","submitted_at":"2023-12-22T20:11:27Z","title_canon_sha256":"8ef35cb4288c0ca14da412cefa42be41bd3000a8288a6353b60d7e9d407caead"},"schema_version":"1.0","source":{"id":"2312.15041","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2312.15041","created_at":"2026-07-05T07:31:36Z"},{"alias_kind":"arxiv_version","alias_value":"2312.15041v2","created_at":"2026-07-05T07:31:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2312.15041","created_at":"2026-07-05T07:31:36Z"},{"alias_kind":"pith_short_12","alias_value":"46SNVLUFG2TV","created_at":"2026-07-05T07:31:36Z"},{"alias_kind":"pith_short_16","alias_value":"46SNVLUFG2TVAWJS","created_at":"2026-07-05T07:31:36Z"},{"alias_kind":"pith_short_8","alias_value":"46SNVLUF","created_at":"2026-07-05T07:31:36Z"}],"graph_snapshots":[{"event_id":"sha256:31983e3b7035f4e0beb8699a6e8eaa861bc5a6e5e8d78fdeb5dc456b59f039e9","target":"graph","created_at":"2026-07-05T07:31:36Z","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/2312.15041/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Human social interactions occur in group settings of varying sizes and locations, depending on the type of social activity. The ability to distinguish group formations based on their purposes transforms how group detection mechanisms function. Not only should such tools support the effective detection of serendipitous encounters, but they can derive categories of relation types among users. Determining who is involved, what activity is performed, and when and where the activity occurs are critical to understanding group processes in greater depth, including supporting goal-oriented application","authors_text":"Akanksha Atrey, Camellia Zakaria, Prashant Shenoy, Rajesh Balan","cross_cats":["cs.SI"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.HC","submitted_at":"2023-12-22T20:11:27Z","title":"W4-Groups: Modeling the Who, What, When and Where of Group Behavior via Mobility Sensing"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2312.15041","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":"sha256:16f5223ab0ca84e3eca325280f623cc0a69cb666b2202be45b68746ed0b82ef4","target":"record","created_at":"2026-07-05T07:31:36Z","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":"a41e52a48a30057625eda69574c640e74e6ac53da06d84fff66af7b512fa7cd7","cross_cats_sorted":["cs.SI"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.HC","submitted_at":"2023-12-22T20:11:27Z","title_canon_sha256":"8ef35cb4288c0ca14da412cefa42be41bd3000a8288a6353b60d7e9d407caead"},"schema_version":"1.0","source":{"id":"2312.15041","kind":"arxiv","version":2}},"canonical_sha256":"e7a4daae8536a7505932eb40d2d1f302c4ae92699500c59094c509b6ed5c7d8d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e7a4daae8536a7505932eb40d2d1f302c4ae92699500c59094c509b6ed5c7d8d","first_computed_at":"2026-07-05T07:31:36.198754Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T07:31:36.198754Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"7wHxq/Z16OKA7QsS0my1vncEMm+22oH4Tk1jHy/TBJ9BY/W21Hb74Jxb+3KSxxViptfmAWKQm0mSC6znAzb3Cg==","signature_status":"signed_v1","signed_at":"2026-07-05T07:31:36.199227Z","signed_message":"canonical_sha256_bytes"},"source_id":"2312.15041","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:16f5223ab0ca84e3eca325280f623cc0a69cb666b2202be45b68746ed0b82ef4","sha256:31983e3b7035f4e0beb8699a6e8eaa861bc5a6e5e8d78fdeb5dc456b59f039e9"],"state_sha256":"59d82444bb8012d5a0fc026d38dcfdbfcdf3d3ab6ee9de3a286d8110645a2a13"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6GjmgS5JLFTMn1nOP6PuZ+Gt4T4X2gPFX2+NUaPmT/Mk7MsTtOGkS9VVwOFXhNhGGySH/XN6VoyNS28aVTorDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-23T02:20:55.873578Z","bundle_sha256":"2290970e5286390dcf185eadfa30b2ce30264a5081d7d0592dbc4a9bc6a4a3fd"}}