{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:TGA7N5LZ5K3HH3O5YXL3ZHCCXQ","short_pith_number":"pith:TGA7N5LZ","canonical_record":{"source":{"id":"1905.01376","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2019-05-03T22:40:56Z","cross_cats_sorted":[],"title_canon_sha256":"28e398785d339f1259823157536bd444d9d0d240dba84b1d3e18bdec39b22b0a","abstract_canon_sha256":"f38e729844c4e8936f596f8bf63f0fd01b5ebb1b455b83ae529c32cb0363ada8"},"schema_version":"1.0"},"canonical_sha256":"9981f6f579eab673edddc5d7bc9c42bc01f343221d38eb362163427a7d629689","source":{"kind":"arxiv","id":"1905.01376","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1905.01376","created_at":"2026-07-05T00:13:45Z"},{"alias_kind":"arxiv_version","alias_value":"1905.01376v1","created_at":"2026-07-05T00:13:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1905.01376","created_at":"2026-07-05T00:13:45Z"},{"alias_kind":"pith_short_12","alias_value":"TGA7N5LZ5K3H","created_at":"2026-07-05T00:13:45Z"},{"alias_kind":"pith_short_16","alias_value":"TGA7N5LZ5K3HH3O5","created_at":"2026-07-05T00:13:45Z"},{"alias_kind":"pith_short_8","alias_value":"TGA7N5LZ","created_at":"2026-07-05T00:13:45Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:TGA7N5LZ5K3HH3O5YXL3ZHCCXQ","target":"record","payload":{"canonical_record":{"source":{"id":"1905.01376","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2019-05-03T22:40:56Z","cross_cats_sorted":[],"title_canon_sha256":"28e398785d339f1259823157536bd444d9d0d240dba84b1d3e18bdec39b22b0a","abstract_canon_sha256":"f38e729844c4e8936f596f8bf63f0fd01b5ebb1b455b83ae529c32cb0363ada8"},"schema_version":"1.0"},"canonical_sha256":"9981f6f579eab673edddc5d7bc9c42bc01f343221d38eb362163427a7d629689","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:13:45.940670Z","signature_b64":"K4m1ds/JxG7lbSJRodZc6h/3m9wiVxxiu1l8CN6Spy5aR8eRkmaGnJphn0rLAFyhTb/VwK9wjT8IIxMjKZKYDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9981f6f579eab673edddc5d7bc9c42bc01f343221d38eb362163427a7d629689","last_reissued_at":"2026-07-05T00:13:45.940275Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:13:45.940275Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1905.01376","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":"2026-07-05T00:13:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+fkU68WkhDakd2sw33n6T1tHDfKG8iA8FkKf41Sa+i7FseSK6n+DlXkXQcejmpR7TlC8pvbCrs/B5kh14P4pAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-18T08:49:13.757405Z"},"content_sha256":"1c9968f105478be616e781c070a8b48b712dfd3e885125a7b24c3a34216cc6eb","schema_version":"1.0","event_id":"sha256:1c9968f105478be616e781c070a8b48b712dfd3e885125a7b24c3a34216cc6eb"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:TGA7N5LZ5K3HH3O5YXL3ZHCCXQ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Testing the Structure of a Gaussian Graphical Model with Reduced Transmissions in a Distributed Setting","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"eess.SP","authors_text":"Brian M. Sadler, Jiangfan Zhang, Rick S. Blum, Yicheng Chen","submitted_at":"2019-05-03T22:40:56Z","abstract_excerpt":"Testing a covariance matrix following a Gaussian graphical model (GGM) is considered in this paper based on observations made at a set of distributed sensors grouped into clusters. Ordered transmissions are proposed to achieve the same Bayes risk as the optimum centralized energy unconstrained approach but with fewer transmissions and a completely distributed approach. In this approach, we represent the Bayes optimum test statistic as a sum of local test statistics which can be calculated by only utilizing the observations available at one cluster. We select one sensor to be the cluster head ("},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1905.01376","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/1905.01376/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T00:13:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"X4YOTqgjfW9a0tmLGHPu3++v5mPLtZ29p+MA0QhQUR42v1W07QE/ifRnLYKiX+m6Xauqx+y13Mc55sWA/lJNDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-18T08:49:13.757913Z"},"content_sha256":"8edab8ff64a88454a3c84d62345b98a3a170783bcd39de31c731826e7d732935","schema_version":"1.0","event_id":"sha256:8edab8ff64a88454a3c84d62345b98a3a170783bcd39de31c731826e7d732935"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/TGA7N5LZ5K3HH3O5YXL3ZHCCXQ/bundle.json","state_url":"https://pith.science/pith/TGA7N5LZ5K3HH3O5YXL3ZHCCXQ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/TGA7N5LZ5K3HH3O5YXL3ZHCCXQ/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":"2026-08-18T08:49:13Z","links":{"resolver":"https://pith.science/pith/TGA7N5LZ5K3HH3O5YXL3ZHCCXQ","bundle":"https://pith.science/pith/TGA7N5LZ5K3HH3O5YXL3ZHCCXQ/bundle.json","state":"https://pith.science/pith/TGA7N5LZ5K3HH3O5YXL3ZHCCXQ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/TGA7N5LZ5K3HH3O5YXL3ZHCCXQ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:TGA7N5LZ5K3HH3O5YXL3ZHCCXQ","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":"f38e729844c4e8936f596f8bf63f0fd01b5ebb1b455b83ae529c32cb0363ada8","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2019-05-03T22:40:56Z","title_canon_sha256":"28e398785d339f1259823157536bd444d9d0d240dba84b1d3e18bdec39b22b0a"},"schema_version":"1.0","source":{"id":"1905.01376","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1905.01376","created_at":"2026-07-05T00:13:45Z"},{"alias_kind":"arxiv_version","alias_value":"1905.01376v1","created_at":"2026-07-05T00:13:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1905.01376","created_at":"2026-07-05T00:13:45Z"},{"alias_kind":"pith_short_12","alias_value":"TGA7N5LZ5K3H","created_at":"2026-07-05T00:13:45Z"},{"alias_kind":"pith_short_16","alias_value":"TGA7N5LZ5K3HH3O5","created_at":"2026-07-05T00:13:45Z"},{"alias_kind":"pith_short_8","alias_value":"TGA7N5LZ","created_at":"2026-07-05T00:13:45Z"}],"graph_snapshots":[{"event_id":"sha256:8edab8ff64a88454a3c84d62345b98a3a170783bcd39de31c731826e7d732935","target":"graph","created_at":"2026-07-05T00:13:45Z","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/1905.01376/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Testing a covariance matrix following a Gaussian graphical model (GGM) is considered in this paper based on observations made at a set of distributed sensors grouped into clusters. Ordered transmissions are proposed to achieve the same Bayes risk as the optimum centralized energy unconstrained approach but with fewer transmissions and a completely distributed approach. In this approach, we represent the Bayes optimum test statistic as a sum of local test statistics which can be calculated by only utilizing the observations available at one cluster. We select one sensor to be the cluster head (","authors_text":"Brian M. Sadler, Jiangfan Zhang, Rick S. Blum, Yicheng Chen","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2019-05-03T22:40:56Z","title":"Testing the Structure of a Gaussian Graphical Model with Reduced Transmissions in a Distributed Setting"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1905.01376","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":"sha256:1c9968f105478be616e781c070a8b48b712dfd3e885125a7b24c3a34216cc6eb","target":"record","created_at":"2026-07-05T00:13:45Z","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":"f38e729844c4e8936f596f8bf63f0fd01b5ebb1b455b83ae529c32cb0363ada8","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2019-05-03T22:40:56Z","title_canon_sha256":"28e398785d339f1259823157536bd444d9d0d240dba84b1d3e18bdec39b22b0a"},"schema_version":"1.0","source":{"id":"1905.01376","kind":"arxiv","version":1}},"canonical_sha256":"9981f6f579eab673edddc5d7bc9c42bc01f343221d38eb362163427a7d629689","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9981f6f579eab673edddc5d7bc9c42bc01f343221d38eb362163427a7d629689","first_computed_at":"2026-07-05T00:13:45.940275Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:13:45.940275Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"K4m1ds/JxG7lbSJRodZc6h/3m9wiVxxiu1l8CN6Spy5aR8eRkmaGnJphn0rLAFyhTb/VwK9wjT8IIxMjKZKYDg==","signature_status":"signed_v1","signed_at":"2026-07-05T00:13:45.940670Z","signed_message":"canonical_sha256_bytes"},"source_id":"1905.01376","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1c9968f105478be616e781c070a8b48b712dfd3e885125a7b24c3a34216cc6eb","sha256:8edab8ff64a88454a3c84d62345b98a3a170783bcd39de31c731826e7d732935"],"state_sha256":"0f89c03f13ec90693ee76071f6ab442638c6121ab31014ef29fdf416c2fd66d7"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KoaEhwu+eX8E4akpjy/32TuK9JhPCdszQtUSHno6Jwv5vMhogR99lzjhJwwbkMRDHB+tVaVYgneOPjt8M9zkAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-18T08:49:13.762854Z","bundle_sha256":"a556c843c70e36f8809795da999cd4965080ed6f0a3ae0f9116c0a821949c8b7"}}