{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:5VS36ZGDSUVFTYJY6QXZW6VULQ","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":"b2b8873a8eda86497f6383851db19cc0a412422c7cad73477defa328fbd53e96","cross_cats_sorted":["physics.soc-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SI","submitted_at":"2017-11-09T03:49:46Z","title_canon_sha256":"b73192abc22c4fb5f630b5f4639410c57143ae93d043a9ea736717d249b59ec4"},"schema_version":"1.0","source":{"id":"1711.03245","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1711.03245","created_at":"2026-05-18T00:30:56Z"},{"alias_kind":"arxiv_version","alias_value":"1711.03245v1","created_at":"2026-05-18T00:30:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1711.03245","created_at":"2026-05-18T00:30:56Z"},{"alias_kind":"pith_short_12","alias_value":"5VS36ZGDSUVF","created_at":"2026-05-18T12:31:00Z"},{"alias_kind":"pith_short_16","alias_value":"5VS36ZGDSUVFTYJY","created_at":"2026-05-18T12:31:00Z"},{"alias_kind":"pith_short_8","alias_value":"5VS36ZGD","created_at":"2026-05-18T12:31:00Z"}],"graph_snapshots":[{"event_id":"sha256:72da6cbd928a72f0585829f451e00ac1388e55c86933de2d0f9465221ed4879e","target":"graph","created_at":"2026-05-18T00:30:56Z","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":"In this paper we analyze the US Patient Referral Network (also called the Shared Patient Network) and various subnetworks for the years 2009--2015. In these networks two physicians are linked if a patient encounters both of them within a specified time-interval, according to the data made available by the Centers for Medicare and Medicaid Services. We find power law distributions on most state-level data as well as a core-periphery structure. On a national and state level, we discover a so-called small-world structure as well as a \"gravity law\" of the type found in some large-scale economic ne","authors_text":"A. James O'Malley, Chuankai An, Corey D. Stock, Daniel N. Rockmore","cross_cats":["physics.soc-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SI","submitted_at":"2017-11-09T03:49:46Z","title":"Analysis of the U.S. Patient Referral Network"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1711.03245","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:ac86b3e3cd68f9be1201c70c2594445a9da9139dc47678ab469d13ea86050c95","target":"record","created_at":"2026-05-18T00:30:56Z","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":"b2b8873a8eda86497f6383851db19cc0a412422c7cad73477defa328fbd53e96","cross_cats_sorted":["physics.soc-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SI","submitted_at":"2017-11-09T03:49:46Z","title_canon_sha256":"b73192abc22c4fb5f630b5f4639410c57143ae93d043a9ea736717d249b59ec4"},"schema_version":"1.0","source":{"id":"1711.03245","kind":"arxiv","version":1}},"canonical_sha256":"ed65bf64c3952a59e138f42f9b7ab45c093e27ae190552e419032a43b0887748","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ed65bf64c3952a59e138f42f9b7ab45c093e27ae190552e419032a43b0887748","first_computed_at":"2026-05-18T00:30:56.806837Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:30:56.806837Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"uET9rSmwsoInwpVVeQKSPtMEopQmkE2Dv882I+/2BG90I0uxDwF24dLK/1+jL7BV/lx8dSGOtIPOwstuGsH0CA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:30:56.807346Z","signed_message":"canonical_sha256_bytes"},"source_id":"1711.03245","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ac86b3e3cd68f9be1201c70c2594445a9da9139dc47678ab469d13ea86050c95","sha256:72da6cbd928a72f0585829f451e00ac1388e55c86933de2d0f9465221ed4879e"],"state_sha256":"8b5aeb010d659cfa00011960bea3463cc87f8a80243ce0964797df0364182aee"}