{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:J37MRT5BQTENUFCZ4TNYHRDFIO","short_pith_number":"pith:J37MRT5B","canonical_record":{"source":{"id":"1409.0612","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.OH","submitted_at":"2014-09-02T06:32:39Z","cross_cats_sorted":[],"title_canon_sha256":"5a243745aea12b542602554361e36ce242b75146bf24c5c16ba166b110f298a0","abstract_canon_sha256":"31b9e3ee697cbdef15977122cde82508cb7354aecafebd6764e455aaa48ccf17"},"schema_version":"1.0"},"canonical_sha256":"4efec8cfa184c8da1459e4db83c4654391a11764c1cadbed03a6c547785bdc90","source":{"kind":"arxiv","id":"1409.0612","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1409.0612","created_at":"2026-05-18T02:43:46Z"},{"alias_kind":"arxiv_version","alias_value":"1409.0612v1","created_at":"2026-05-18T02:43:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1409.0612","created_at":"2026-05-18T02:43:46Z"},{"alias_kind":"pith_short_12","alias_value":"J37MRT5BQTEN","created_at":"2026-05-18T12:28:33Z"},{"alias_kind":"pith_short_16","alias_value":"J37MRT5BQTENUFCZ","created_at":"2026-05-18T12:28:33Z"},{"alias_kind":"pith_short_8","alias_value":"J37MRT5B","created_at":"2026-05-18T12:28:33Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:J37MRT5BQTENUFCZ4TNYHRDFIO","target":"record","payload":{"canonical_record":{"source":{"id":"1409.0612","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.OH","submitted_at":"2014-09-02T06:32:39Z","cross_cats_sorted":[],"title_canon_sha256":"5a243745aea12b542602554361e36ce242b75146bf24c5c16ba166b110f298a0","abstract_canon_sha256":"31b9e3ee697cbdef15977122cde82508cb7354aecafebd6764e455aaa48ccf17"},"schema_version":"1.0"},"canonical_sha256":"4efec8cfa184c8da1459e4db83c4654391a11764c1cadbed03a6c547785bdc90","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:43:46.503010Z","signature_b64":"uRI+TUnJ7FlnEXZ4JIyqBPitLdsTgHIOicU85dAxPjTLUWopRGuGkz+LR1hrDIq5+F2k0lth67QwfFGgibhwBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"4efec8cfa184c8da1459e4db83c4654391a11764c1cadbed03a6c547785bdc90","last_reissued_at":"2026-05-18T02:43:46.502600Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:43:46.502600Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1409.0612","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":"2026-05-18T02:43:46Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"oY0z6OjcDW7rSV1rkObx572Y9REZmpGPb6mCYk1Or1q+WQWxn1KOpUPkOUV+pdmvveVvFqGgDZR/h0Woq23nAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-02T22:50:44.541448Z"},"content_sha256":"e16ca43eb3952dd60775ba7a102ab7ebb59a2797a70d1bc414a32dcbeec1237d","schema_version":"1.0","event_id":"sha256:e16ca43eb3952dd60775ba7a102ab7ebb59a2797a70d1bc414a32dcbeec1237d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:J37MRT5BQTENUFCZ4TNYHRDFIO","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Population spatialization and synthesis with open data","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.OH","authors_text":"Ying Long, Zhenjiang Shen","submitted_at":"2014-09-02T06:32:39Z","abstract_excerpt":"Individuals together with their locations & attributes are essential to feed micro-level applied urban models (for example, spatial micro-simulation and agent-based modeling) for policy evaluation. Existed studies on population spatialization and population synthesis are generally separated. In developing countries like China, population distribution in a fine scale, as the input for population synthesis, is not universally available. With the open-government initiatives in China and the emerging Web 2.0 techniques, more and more open data are becoming achievable. In this paper, we propose an "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1409.0612","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":"2026-05-18T02:43:46Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/HkBEST9XD65GMJ5rqCPyZ/uTc8HdDZj5+W4iU3yvgg+ur/Tj0J7KKgUCnfk0N6PzF5O0B39iLUCAn5VeGgqDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-02T22:50:44.541793Z"},"content_sha256":"a09ad9858a7b70811934d28f16f43fed11118f971b424e5a8b1a6e8c11d7eb45","schema_version":"1.0","event_id":"sha256:a09ad9858a7b70811934d28f16f43fed11118f971b424e5a8b1a6e8c11d7eb45"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/J37MRT5BQTENUFCZ4TNYHRDFIO/bundle.json","state_url":"https://pith.science/pith/J37MRT5BQTENUFCZ4TNYHRDFIO/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/J37MRT5BQTENUFCZ4TNYHRDFIO/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":"2026-07-02T22:50:44Z","links":{"resolver":"https://pith.science/pith/J37MRT5BQTENUFCZ4TNYHRDFIO","bundle":"https://pith.science/pith/J37MRT5BQTENUFCZ4TNYHRDFIO/bundle.json","state":"https://pith.science/pith/J37MRT5BQTENUFCZ4TNYHRDFIO/state.json","well_known_bundle":"https://pith.science/.well-known/pith/J37MRT5BQTENUFCZ4TNYHRDFIO/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:J37MRT5BQTENUFCZ4TNYHRDFIO","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":"31b9e3ee697cbdef15977122cde82508cb7354aecafebd6764e455aaa48ccf17","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.OH","submitted_at":"2014-09-02T06:32:39Z","title_canon_sha256":"5a243745aea12b542602554361e36ce242b75146bf24c5c16ba166b110f298a0"},"schema_version":"1.0","source":{"id":"1409.0612","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1409.0612","created_at":"2026-05-18T02:43:46Z"},{"alias_kind":"arxiv_version","alias_value":"1409.0612v1","created_at":"2026-05-18T02:43:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1409.0612","created_at":"2026-05-18T02:43:46Z"},{"alias_kind":"pith_short_12","alias_value":"J37MRT5BQTEN","created_at":"2026-05-18T12:28:33Z"},{"alias_kind":"pith_short_16","alias_value":"J37MRT5BQTENUFCZ","created_at":"2026-05-18T12:28:33Z"},{"alias_kind":"pith_short_8","alias_value":"J37MRT5B","created_at":"2026-05-18T12:28:33Z"}],"graph_snapshots":[{"event_id":"sha256:a09ad9858a7b70811934d28f16f43fed11118f971b424e5a8b1a6e8c11d7eb45","target":"graph","created_at":"2026-05-18T02:43:46Z","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":"Individuals together with their locations & attributes are essential to feed micro-level applied urban models (for example, spatial micro-simulation and agent-based modeling) for policy evaluation. Existed studies on population spatialization and population synthesis are generally separated. In developing countries like China, population distribution in a fine scale, as the input for population synthesis, is not universally available. With the open-government initiatives in China and the emerging Web 2.0 techniques, more and more open data are becoming achievable. In this paper, we propose an ","authors_text":"Ying Long, Zhenjiang Shen","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.OH","submitted_at":"2014-09-02T06:32:39Z","title":"Population spatialization and synthesis with open data"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1409.0612","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:e16ca43eb3952dd60775ba7a102ab7ebb59a2797a70d1bc414a32dcbeec1237d","target":"record","created_at":"2026-05-18T02:43:46Z","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":"31b9e3ee697cbdef15977122cde82508cb7354aecafebd6764e455aaa48ccf17","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.OH","submitted_at":"2014-09-02T06:32:39Z","title_canon_sha256":"5a243745aea12b542602554361e36ce242b75146bf24c5c16ba166b110f298a0"},"schema_version":"1.0","source":{"id":"1409.0612","kind":"arxiv","version":1}},"canonical_sha256":"4efec8cfa184c8da1459e4db83c4654391a11764c1cadbed03a6c547785bdc90","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4efec8cfa184c8da1459e4db83c4654391a11764c1cadbed03a6c547785bdc90","first_computed_at":"2026-05-18T02:43:46.502600Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:43:46.502600Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"uRI+TUnJ7FlnEXZ4JIyqBPitLdsTgHIOicU85dAxPjTLUWopRGuGkz+LR1hrDIq5+F2k0lth67QwfFGgibhwBg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:43:46.503010Z","signed_message":"canonical_sha256_bytes"},"source_id":"1409.0612","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e16ca43eb3952dd60775ba7a102ab7ebb59a2797a70d1bc414a32dcbeec1237d","sha256:a09ad9858a7b70811934d28f16f43fed11118f971b424e5a8b1a6e8c11d7eb45"],"state_sha256":"5fc38004063498e684b7ba5db5398eac79306f14ca953e272d3ae1af4d489781"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Lp9ad3ZVVYKWHz7RCgxUIbVVjdKWGp5KOWpNB4SHX0z8+Wwfh4+niLfucVcRXqNYB9Ko+mFnGO5t10/zaB71Cw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-02T22:50:44.543682Z","bundle_sha256":"5c3f64d46f945aa1dfd140d11c550e9df66c261ff4fd4e9e8e23a793bc33cba0"}}