{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:VKEOIVS7S3S3UIS5U7UFOYLA3D","short_pith_number":"pith:VKEOIVS7","canonical_record":{"source":{"id":"1401.8132","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.MA","submitted_at":"2014-01-31T11:07:25Z","cross_cats_sorted":[],"title_canon_sha256":"508d99e4b03aba58400ce1faf40a607c6773acbd2f87665641d9bb7179ef245c","abstract_canon_sha256":"976b1eccc3038877e4e4e841844e170a8822d11720efed603484cf8fb423e5f9"},"schema_version":"1.0"},"canonical_sha256":"aa88e4565f96e5ba225da7e8576160d8c9755c6537517c88dabfbbd8f358fc27","source":{"kind":"arxiv","id":"1401.8132","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1401.8132","created_at":"2026-05-18T03:00:36Z"},{"alias_kind":"arxiv_version","alias_value":"1401.8132v1","created_at":"2026-05-18T03:00:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1401.8132","created_at":"2026-05-18T03:00:36Z"},{"alias_kind":"pith_short_12","alias_value":"VKEOIVS7S3S3","created_at":"2026-05-18T12:28:54Z"},{"alias_kind":"pith_short_16","alias_value":"VKEOIVS7S3S3UIS5","created_at":"2026-05-18T12:28:54Z"},{"alias_kind":"pith_short_8","alias_value":"VKEOIVS7","created_at":"2026-05-18T12:28:54Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:VKEOIVS7S3S3UIS5U7UFOYLA3D","target":"record","payload":{"canonical_record":{"source":{"id":"1401.8132","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.MA","submitted_at":"2014-01-31T11:07:25Z","cross_cats_sorted":[],"title_canon_sha256":"508d99e4b03aba58400ce1faf40a607c6773acbd2f87665641d9bb7179ef245c","abstract_canon_sha256":"976b1eccc3038877e4e4e841844e170a8822d11720efed603484cf8fb423e5f9"},"schema_version":"1.0"},"canonical_sha256":"aa88e4565f96e5ba225da7e8576160d8c9755c6537517c88dabfbbd8f358fc27","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:00:36.023494Z","signature_b64":"1iA27TqKIBzX1VAuXyQbkvspxiPJEgcixpKQNymF/3k3o8lCZ26rxYeKKKfUsodp1pysZpICbK0H7g3luRKCBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"aa88e4565f96e5ba225da7e8576160d8c9755c6537517c88dabfbbd8f358fc27","last_reissued_at":"2026-05-18T03:00:36.022559Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:00:36.022559Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1401.8132","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":"2026-05-18T03:00:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+MbzSFjsv54uhrhqDMd6Y5prs8ZTk4vFTh7Fe2ecAjDSVQsde/9bpykKpZ/nSMSDpiwi1ZMQ1whkERX6Q6kQBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T12:35:05.800040Z"},"content_sha256":"8563f2fefdbc45dc50a24bc3388435081ed77f78f8f16591c06586b5f5e43ed9","schema_version":"1.0","event_id":"sha256:8563f2fefdbc45dc50a24bc3388435081ed77f78f8f16591c06586b5f5e43ed9"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:VKEOIVS7S3S3UIS5U7UFOYLA3D","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Heterogeneous Speed Profiles in Discrete Models for Pedestrian Simulation","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.MA","authors_text":"Giuseppe Vizzari, Luca Crociani, Stefania Bandini","submitted_at":"2014-01-31T11:07:25Z","abstract_excerpt":"Discrete pedestrian simulation models are viable alternatives to particle based approaches based on a continuous spatial representation. The effects of discretisation, however, also imply some difficulties in modelling certain phenomena that can be observed in reality. This paper focuses on the possibility to manage heterogeneity in the walking speed of the simulated population of pedestrians by modifying an existing multi-agent model extending the floor field approach. Whereas some discrete models allow pedestrians (or cars, when applied to traffic modelling) to move more than a single cell p"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1401.8132","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":"2026-05-18T03:00:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9MYIWeGBqKGH8t3Y8GTL3NiOgqax+t5VlhP33bXq40ybwOKo/mktgTW67VrAWj8lP5wBixYnS6kKGNBztNgEBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T12:35:05.800398Z"},"content_sha256":"373fdadccc2ba2c92054cf8f447b1b1b68f8c155a146e1ddf49a424f1e9cac67","schema_version":"1.0","event_id":"sha256:373fdadccc2ba2c92054cf8f447b1b1b68f8c155a146e1ddf49a424f1e9cac67"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/VKEOIVS7S3S3UIS5U7UFOYLA3D/bundle.json","state_url":"https://pith.science/pith/VKEOIVS7S3S3UIS5U7UFOYLA3D/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/VKEOIVS7S3S3UIS5U7UFOYLA3D/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":"2026-05-28T12:35:05Z","links":{"resolver":"https://pith.science/pith/VKEOIVS7S3S3UIS5U7UFOYLA3D","bundle":"https://pith.science/pith/VKEOIVS7S3S3UIS5U7UFOYLA3D/bundle.json","state":"https://pith.science/pith/VKEOIVS7S3S3UIS5U7UFOYLA3D/state.json","well_known_bundle":"https://pith.science/.well-known/pith/VKEOIVS7S3S3UIS5U7UFOYLA3D/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:VKEOIVS7S3S3UIS5U7UFOYLA3D","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":"976b1eccc3038877e4e4e841844e170a8822d11720efed603484cf8fb423e5f9","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.MA","submitted_at":"2014-01-31T11:07:25Z","title_canon_sha256":"508d99e4b03aba58400ce1faf40a607c6773acbd2f87665641d9bb7179ef245c"},"schema_version":"1.0","source":{"id":"1401.8132","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1401.8132","created_at":"2026-05-18T03:00:36Z"},{"alias_kind":"arxiv_version","alias_value":"1401.8132v1","created_at":"2026-05-18T03:00:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1401.8132","created_at":"2026-05-18T03:00:36Z"},{"alias_kind":"pith_short_12","alias_value":"VKEOIVS7S3S3","created_at":"2026-05-18T12:28:54Z"},{"alias_kind":"pith_short_16","alias_value":"VKEOIVS7S3S3UIS5","created_at":"2026-05-18T12:28:54Z"},{"alias_kind":"pith_short_8","alias_value":"VKEOIVS7","created_at":"2026-05-18T12:28:54Z"}],"graph_snapshots":[{"event_id":"sha256:373fdadccc2ba2c92054cf8f447b1b1b68f8c155a146e1ddf49a424f1e9cac67","target":"graph","created_at":"2026-05-18T03:00:36Z","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"},"paper":{"abstract_excerpt":"Discrete pedestrian simulation models are viable alternatives to particle based approaches based on a continuous spatial representation. The effects of discretisation, however, also imply some difficulties in modelling certain phenomena that can be observed in reality. This paper focuses on the possibility to manage heterogeneity in the walking speed of the simulated population of pedestrians by modifying an existing multi-agent model extending the floor field approach. Whereas some discrete models allow pedestrians (or cars, when applied to traffic modelling) to move more than a single cell p","authors_text":"Giuseppe Vizzari, Luca Crociani, Stefania Bandini","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.MA","submitted_at":"2014-01-31T11:07:25Z","title":"Heterogeneous Speed Profiles in Discrete Models for Pedestrian Simulation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1401.8132","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":"sha256:8563f2fefdbc45dc50a24bc3388435081ed77f78f8f16591c06586b5f5e43ed9","target":"record","created_at":"2026-05-18T03:00:36Z","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":"976b1eccc3038877e4e4e841844e170a8822d11720efed603484cf8fb423e5f9","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.MA","submitted_at":"2014-01-31T11:07:25Z","title_canon_sha256":"508d99e4b03aba58400ce1faf40a607c6773acbd2f87665641d9bb7179ef245c"},"schema_version":"1.0","source":{"id":"1401.8132","kind":"arxiv","version":1}},"canonical_sha256":"aa88e4565f96e5ba225da7e8576160d8c9755c6537517c88dabfbbd8f358fc27","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"aa88e4565f96e5ba225da7e8576160d8c9755c6537517c88dabfbbd8f358fc27","first_computed_at":"2026-05-18T03:00:36.022559Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:00:36.022559Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"1iA27TqKIBzX1VAuXyQbkvspxiPJEgcixpKQNymF/3k3o8lCZ26rxYeKKKfUsodp1pysZpICbK0H7g3luRKCBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T03:00:36.023494Z","signed_message":"canonical_sha256_bytes"},"source_id":"1401.8132","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8563f2fefdbc45dc50a24bc3388435081ed77f78f8f16591c06586b5f5e43ed9","sha256:373fdadccc2ba2c92054cf8f447b1b1b68f8c155a146e1ddf49a424f1e9cac67"],"state_sha256":"daaa1c3726b3e7619b050b50fb60682150d745e09ab6f3108cc9ebd0ad053995"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"I/Td9kMwI/sEwM0raMmKxwDUL2kg/668nBeZ8W3SNLCaP3Y+k/9dR00h50yvVLxaVA7DAzrl7f3G+GaeQuzzAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T12:35:05.802369Z","bundle_sha256":"532422bcc9fa3db2f9bd32645ce9fdeaf74e156c07c71589c07738977ab094b2"}}