{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:QA7QWMXQT4W26U6JNKN2XVDXUF","short_pith_number":"pith:QA7QWMXQ","canonical_record":{"source":{"id":"2605.27544","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SY","submitted_at":"2026-05-26T18:15:57Z","cross_cats_sorted":["cs.SY"],"title_canon_sha256":"6ce43bbca1640aec9f3ce9af026537d816fea953bbc18b0bfaf7e41db3f61487","abstract_canon_sha256":"2c6faa2ea3b75cc6a145351d4da496130340a6928227dd6b4be66abfa60928f6"},"schema_version":"1.0"},"canonical_sha256":"803f0b32f09f2daf53c96a9babd477a17a55eb774b6098c4c1cecc730ceb02c9","source":{"kind":"arxiv","id":"2605.27544","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2605.27544","created_at":"2026-05-28T01:04:15Z"},{"alias_kind":"arxiv_version","alias_value":"2605.27544v1","created_at":"2026-05-28T01:04:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2605.27544","created_at":"2026-05-28T01:04:15Z"},{"alias_kind":"pith_short_12","alias_value":"QA7QWMXQT4W2","created_at":"2026-05-28T01:04:15Z"},{"alias_kind":"pith_short_16","alias_value":"QA7QWMXQT4W26U6J","created_at":"2026-05-28T01:04:15Z"},{"alias_kind":"pith_short_8","alias_value":"QA7QWMXQ","created_at":"2026-05-28T01:04:15Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:QA7QWMXQT4W26U6JNKN2XVDXUF","target":"record","payload":{"canonical_record":{"source":{"id":"2605.27544","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SY","submitted_at":"2026-05-26T18:15:57Z","cross_cats_sorted":["cs.SY"],"title_canon_sha256":"6ce43bbca1640aec9f3ce9af026537d816fea953bbc18b0bfaf7e41db3f61487","abstract_canon_sha256":"2c6faa2ea3b75cc6a145351d4da496130340a6928227dd6b4be66abfa60928f6"},"schema_version":"1.0"},"canonical_sha256":"803f0b32f09f2daf53c96a9babd477a17a55eb774b6098c4c1cecc730ceb02c9","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-28T01:04:15.099613Z","signature_b64":"t1SvK2frFhVp5gu+4wLcMp6aA8Udclo9y4J+UFBb/CSSoFuVV5LpFA7ap/JiFSMknGf+qzc3fZzC/IEwWp6sAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"803f0b32f09f2daf53c96a9babd477a17a55eb774b6098c4c1cecc730ceb02c9","last_reissued_at":"2026-05-28T01:04:15.098790Z","signature_status":"signed_v1","first_computed_at":"2026-05-28T01:04:15.098790Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2605.27544","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":"2026-05-28T01:04:15Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Od0L73YukVlndP2kFmEzfJxvvbiLYmho3f+MmmYQ0ILSSYhLjDTJV1JG1kUkb6bXgG5qB/Yw4ztkKxBSDPJjAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-29T03:17:11.878455Z"},"content_sha256":"708cfded8551d9674de6eba63e2897f03e5dddd30be437a4ba2dff6e87175862","schema_version":"1.0","event_id":"sha256:708cfded8551d9674de6eba63e2897f03e5dddd30be437a4ba2dff6e87175862"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:QA7QWMXQT4W26U6JNKN2XVDXUF","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Subsystem Structure as an Inferential Resource for Coupled Engineered Systems","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.SY"],"primary_cat":"eess.SY","authors_text":"Esmaeil Ghorbani, J\\\"urgen Hackl","submitted_at":"2026-05-26T18:15:57Z","abstract_excerpt":"Engineered infrastructure systems pose inverse problems in which hidden states, unknown parameters, and subsystem couplings must be inferred from sparse and noisy measurements. These problems are difficult because physical subsystems are heterogeneous, sensing is partial, uncertainty is distributed across subsystem interfaces, and computational cost grows rapidly with system size. We address this challenge with probabilistic compositional inference, a graph-based architecture that represents a coupled system as interacting subsystems, each retaining its own local model, estimator, and uncertai"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2605.27544","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/2605.27544/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":"2026-05-28T01:04:15Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"mZ6RQMYUIUyeekpc1W7U+hZQqJM+oiNEiziQTdqMm5t0UyghB6uTrH98BWZJ3gct4bgTFJCM6zLWL0rsgBjABQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-29T03:17:11.878817Z"},"content_sha256":"8b52d65538b9c34789a9e629603983156cfbb515d7ef3b8762407ae5687124c9","schema_version":"1.0","event_id":"sha256:8b52d65538b9c34789a9e629603983156cfbb515d7ef3b8762407ae5687124c9"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/QA7QWMXQT4W26U6JNKN2XVDXUF/bundle.json","state_url":"https://pith.science/pith/QA7QWMXQT4W26U6JNKN2XVDXUF/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/QA7QWMXQT4W26U6JNKN2XVDXUF/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":"2026-06-29T03:17:11Z","links":{"resolver":"https://pith.science/pith/QA7QWMXQT4W26U6JNKN2XVDXUF","bundle":"https://pith.science/pith/QA7QWMXQT4W26U6JNKN2XVDXUF/bundle.json","state":"https://pith.science/pith/QA7QWMXQT4W26U6JNKN2XVDXUF/state.json","well_known_bundle":"https://pith.science/.well-known/pith/QA7QWMXQT4W26U6JNKN2XVDXUF/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:QA7QWMXQT4W26U6JNKN2XVDXUF","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":"2c6faa2ea3b75cc6a145351d4da496130340a6928227dd6b4be66abfa60928f6","cross_cats_sorted":["cs.SY"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SY","submitted_at":"2026-05-26T18:15:57Z","title_canon_sha256":"6ce43bbca1640aec9f3ce9af026537d816fea953bbc18b0bfaf7e41db3f61487"},"schema_version":"1.0","source":{"id":"2605.27544","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2605.27544","created_at":"2026-05-28T01:04:15Z"},{"alias_kind":"arxiv_version","alias_value":"2605.27544v1","created_at":"2026-05-28T01:04:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2605.27544","created_at":"2026-05-28T01:04:15Z"},{"alias_kind":"pith_short_12","alias_value":"QA7QWMXQT4W2","created_at":"2026-05-28T01:04:15Z"},{"alias_kind":"pith_short_16","alias_value":"QA7QWMXQT4W26U6J","created_at":"2026-05-28T01:04:15Z"},{"alias_kind":"pith_short_8","alias_value":"QA7QWMXQ","created_at":"2026-05-28T01:04:15Z"}],"graph_snapshots":[{"event_id":"sha256:8b52d65538b9c34789a9e629603983156cfbb515d7ef3b8762407ae5687124c9","target":"graph","created_at":"2026-05-28T01:04:15Z","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/2605.27544/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Engineered infrastructure systems pose inverse problems in which hidden states, unknown parameters, and subsystem couplings must be inferred from sparse and noisy measurements. These problems are difficult because physical subsystems are heterogeneous, sensing is partial, uncertainty is distributed across subsystem interfaces, and computational cost grows rapidly with system size. We address this challenge with probabilistic compositional inference, a graph-based architecture that represents a coupled system as interacting subsystems, each retaining its own local model, estimator, and uncertai","authors_text":"Esmaeil Ghorbani, J\\\"urgen Hackl","cross_cats":["cs.SY"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SY","submitted_at":"2026-05-26T18:15:57Z","title":"Subsystem Structure as an Inferential Resource for Coupled Engineered Systems"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2605.27544","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":"sha256:708cfded8551d9674de6eba63e2897f03e5dddd30be437a4ba2dff6e87175862","target":"record","created_at":"2026-05-28T01:04:15Z","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":"2c6faa2ea3b75cc6a145351d4da496130340a6928227dd6b4be66abfa60928f6","cross_cats_sorted":["cs.SY"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SY","submitted_at":"2026-05-26T18:15:57Z","title_canon_sha256":"6ce43bbca1640aec9f3ce9af026537d816fea953bbc18b0bfaf7e41db3f61487"},"schema_version":"1.0","source":{"id":"2605.27544","kind":"arxiv","version":1}},"canonical_sha256":"803f0b32f09f2daf53c96a9babd477a17a55eb774b6098c4c1cecc730ceb02c9","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"803f0b32f09f2daf53c96a9babd477a17a55eb774b6098c4c1cecc730ceb02c9","first_computed_at":"2026-05-28T01:04:15.098790Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-28T01:04:15.098790Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"t1SvK2frFhVp5gu+4wLcMp6aA8Udclo9y4J+UFBb/CSSoFuVV5LpFA7ap/JiFSMknGf+qzc3fZzC/IEwWp6sAg==","signature_status":"signed_v1","signed_at":"2026-05-28T01:04:15.099613Z","signed_message":"canonical_sha256_bytes"},"source_id":"2605.27544","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:708cfded8551d9674de6eba63e2897f03e5dddd30be437a4ba2dff6e87175862","sha256:8b52d65538b9c34789a9e629603983156cfbb515d7ef3b8762407ae5687124c9"],"state_sha256":"05537aaf72b2ffe5a22d5c553567877407b4ca2dd00cfb7314d7fb4d29230de5"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KgKzEP66krCNOoTNCcN0Atxznak3DDN53iheauSzK9vYttsBH1zYW1ANDsKlQaLTGi/DPSqtAUJNSnmB0CSAAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-29T03:17:11.881427Z","bundle_sha256":"fad81e78a283fa456ae22a3c50a5591ebe354d9530c430662f9b898a9495c7f6"}}