{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:FR7XKDZYTXUTDYLBN3UU5AU37B","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":"6b9c902e2f201f99ce56faac09c55fd72712d4c2cb7487b6c6d2b8c960f7032e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"stat.ME","submitted_at":"2026-07-09T06:22:23Z","title_canon_sha256":"83b030c42305052220d50c044a24df06490f2d33853cfccf77f6d8a11c9ed1c5"},"schema_version":"1.0","source":{"id":"2607.08142","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2607.08142","created_at":"2026-07-10T01:19:27Z"},{"alias_kind":"arxiv_version","alias_value":"2607.08142v1","created_at":"2026-07-10T01:19:27Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2607.08142","created_at":"2026-07-10T01:19:27Z"},{"alias_kind":"pith_short_12","alias_value":"FR7XKDZYTXUT","created_at":"2026-07-10T01:19:27Z"},{"alias_kind":"pith_short_16","alias_value":"FR7XKDZYTXUTDYLB","created_at":"2026-07-10T01:19:27Z"},{"alias_kind":"pith_short_8","alias_value":"FR7XKDZY","created_at":"2026-07-10T01:19:27Z"}],"graph_snapshots":[{"event_id":"sha256:ccfa14f22a09d2dbda4a591584333c61ffd7f054ba40e837748d6aa971efcbdb","target":"graph","created_at":"2026-07-10T01:19:27Z","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/2607.08142/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The Synthetic Control Method (SCM) is a widely used approach for assessing the effects of interventions by constructing a synthetic counterfactual using a donor set of untreated units. However, the effectiveness of SCM heavily relies on the careful selection of an appropriate donor set. In this paper, we propose a Bayesian hierarchical model that performs donor set selection while preserving the standard SCM simplex constraint on donor weights. Unlike approaches that assume a fixed donor set, our model allows for the simultaneous estimation of the synthetic control weights and the active donor","authors_text":"Johan Lim, Joungyoun Kim, Seul Lee, Xinlei Wang","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"stat.ME","submitted_at":"2026-07-09T06:22:23Z","title":"Bayesian Donor Set Selection in Synthetic Controls"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.08142","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":"sha256:408c256bf0e39a234afdd9e06fa058f7629e81d82826ee9776b70898d43beb42","target":"record","created_at":"2026-07-10T01:19:27Z","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":"6b9c902e2f201f99ce56faac09c55fd72712d4c2cb7487b6c6d2b8c960f7032e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"stat.ME","submitted_at":"2026-07-09T06:22:23Z","title_canon_sha256":"83b030c42305052220d50c044a24df06490f2d33853cfccf77f6d8a11c9ed1c5"},"schema_version":"1.0","source":{"id":"2607.08142","kind":"arxiv","version":1}},"canonical_sha256":"2c7f750f389de931e1616ee94e829bf8606264a01d60f0cc809f51d069bfac72","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2c7f750f389de931e1616ee94e829bf8606264a01d60f0cc809f51d069bfac72","first_computed_at":"2026-07-10T01:19:27.727652Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-10T01:19:27.727652Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"0vh/WFHjhQQrFG4czCDGDIk2VA3n1t6PTBYTMyCCMOcEMAJRGmGs734hBJwfX5Z3fGiBvQTCWygwwCNToydjBw==","signature_status":"signed_v1","signed_at":"2026-07-10T01:19:27.728073Z","signed_message":"canonical_sha256_bytes"},"source_id":"2607.08142","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:408c256bf0e39a234afdd9e06fa058f7629e81d82826ee9776b70898d43beb42","sha256:ccfa14f22a09d2dbda4a591584333c61ffd7f054ba40e837748d6aa971efcbdb"],"state_sha256":"c767d42bef23567a48fbf29590b4932316c87176fad82b1770ae20730fbac668"}