{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:L2FQZEZK4HVQ3HVP55TZACAWYD","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":"5e4b60eac513103e8f08aceb2d3cbfa6011a730b77a7771487ddb1ad705bde7f","cross_cats_sorted":["physics.soc-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SI","submitted_at":"2017-06-30T06:30:32Z","title_canon_sha256":"7dbce2874e2f2c19142ed945f17dbaa5d2259af64a290ad281d3531e454c2781"},"schema_version":"1.0","source":{"id":"1706.10035","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1706.10035","created_at":"2026-05-18T00:41:11Z"},{"alias_kind":"arxiv_version","alias_value":"1706.10035v1","created_at":"2026-05-18T00:41:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1706.10035","created_at":"2026-05-18T00:41:11Z"},{"alias_kind":"pith_short_12","alias_value":"L2FQZEZK4HVQ","created_at":"2026-05-18T12:31:28Z"},{"alias_kind":"pith_short_16","alias_value":"L2FQZEZK4HVQ3HVP","created_at":"2026-05-18T12:31:28Z"},{"alias_kind":"pith_short_8","alias_value":"L2FQZEZK","created_at":"2026-05-18T12:31:28Z"}],"graph_snapshots":[{"event_id":"sha256:9cff49ed8ff6489fb183c0faaceceb26857e02413399fd5ecd5b4138060717ec","target":"graph","created_at":"2026-05-18T00:41:11Z","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":"Location-based social network data offers the promise of collecting the data from a large base of users over a longer span of time at negligible cost. While several studies have applied social network data to activity and mobility analysis, a comparison with travel diaries and general statistics has been lacking. In this paper, we analysed geo-referenced Twitter activities from a large number of users in Singapore and neighbouring countries. By combining this data, population statistics and travel diaries and applying clustering techniques, we addressed detection of activity locations, as well","authors_text":"Alexander Erath, Haohui Chen, Manuel Cebrian, Michael A.B. van Eggermond","cross_cats":["physics.soc-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SI","submitted_at":"2017-06-30T06:30:32Z","title":"Investigating the potential of social network data for transport demand models"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1706.10035","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":"sha256:7806f87bcee574e2318cb5bc0c591a25294027e643de123b7a2b6e82eca6e715","target":"record","created_at":"2026-05-18T00:41:11Z","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":"5e4b60eac513103e8f08aceb2d3cbfa6011a730b77a7771487ddb1ad705bde7f","cross_cats_sorted":["physics.soc-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SI","submitted_at":"2017-06-30T06:30:32Z","title_canon_sha256":"7dbce2874e2f2c19142ed945f17dbaa5d2259af64a290ad281d3531e454c2781"},"schema_version":"1.0","source":{"id":"1706.10035","kind":"arxiv","version":1}},"canonical_sha256":"5e8b0c932ae1eb0d9eafef67900816c0f7ebbb3090dbbf0e4c995eecb4596a02","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"5e8b0c932ae1eb0d9eafef67900816c0f7ebbb3090dbbf0e4c995eecb4596a02","first_computed_at":"2026-05-18T00:41:11.650859Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:41:11.650859Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"QFOsHj3CPuQK+gfIVja8Poge2gFhakvUpBetZtwWLkMbmw6fyIW4Y6qsuw9JhS05EddqGidKb3Jt5CstPtysCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:41:11.651442Z","signed_message":"canonical_sha256_bytes"},"source_id":"1706.10035","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7806f87bcee574e2318cb5bc0c591a25294027e643de123b7a2b6e82eca6e715","sha256:9cff49ed8ff6489fb183c0faaceceb26857e02413399fd5ecd5b4138060717ec"],"state_sha256":"ec28fc9cb2fc7e3f22be96cf2684cab3fdefe88fa5d83ca341452f698096407e"}