{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:WKJCNDD2IAISA42HXHEH7LCJGF","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":"66444fb79ba8e96a1069ae1298c6d0bcf7aa863aeb5c28af514d45a03b18e7d3","cross_cats_sorted":["cs.NA","math.OC","physics.comp-ph","physics.med-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.NA","submitted_at":"2024-08-07T01:33:44Z","title_canon_sha256":"dbb5f5fd8c24793252884ccdce4ea50d9057a5bdc445a9ca2c21d3c7d4009eec"},"schema_version":"1.0","source":{"id":"2408.03496","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2408.03496","created_at":"2026-07-05T10:04:39Z"},{"alias_kind":"arxiv_version","alias_value":"2408.03496v3","created_at":"2026-07-05T10:04:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2408.03496","created_at":"2026-07-05T10:04:39Z"},{"alias_kind":"pith_short_12","alias_value":"WKJCNDD2IAIS","created_at":"2026-07-05T10:04:39Z"},{"alias_kind":"pith_short_16","alias_value":"WKJCNDD2IAISA42H","created_at":"2026-07-05T10:04:39Z"},{"alias_kind":"pith_short_8","alias_value":"WKJCNDD2","created_at":"2026-07-05T10:04:39Z"}],"graph_snapshots":[{"event_id":"sha256:4356b641b1ccc1ea44ae0a3fdd497c1c1ca7eb546f8608ab7541029b7b4c81a0","target":"graph","created_at":"2026-07-05T10:04:39Z","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/2408.03496/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"This paper studies inverse problems in quantitative photoacoustic tomography with additional optical current data supplemented from diffuse optical tomography. We propose a three-stage image reconstruction method for the simultaneous recovery of the absorption, diffusion, and Gr\\\"uneisen coefficients. We demonstrate, through numerical simulations, that: (i) when the Gr\\\"uneisen coefficient is known, the addition of the optical measurements allows a more accurate reconstruction of the scattering and absorption coefficients; and (ii) when the Gr\\\"uneisen coefficient is not known, the addition of","authors_text":"Kui Ren, Shanyin Tong, Yinxi Pan","cross_cats":["cs.NA","math.OC","physics.comp-ph","physics.med-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.NA","submitted_at":"2024-08-07T01:33:44Z","title":"A three-stage method for reconstructing multiple coefficients in coupled photoacoustic and diffuse optical imaging"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2408.03496","kind":"arxiv","version":3},"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":"sha256:8785413ea03133c01e3e652a5b4f74b4ccc63c83120913b87e7ab091a13cdd1d","target":"record","created_at":"2026-07-05T10:04:39Z","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":"66444fb79ba8e96a1069ae1298c6d0bcf7aa863aeb5c28af514d45a03b18e7d3","cross_cats_sorted":["cs.NA","math.OC","physics.comp-ph","physics.med-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.NA","submitted_at":"2024-08-07T01:33:44Z","title_canon_sha256":"dbb5f5fd8c24793252884ccdce4ea50d9057a5bdc445a9ca2c21d3c7d4009eec"},"schema_version":"1.0","source":{"id":"2408.03496","kind":"arxiv","version":3}},"canonical_sha256":"b292268c7a4011207347b9c87fac493153a23dfe0761e8b43cc46794281556b5","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b292268c7a4011207347b9c87fac493153a23dfe0761e8b43cc46794281556b5","first_computed_at":"2026-07-05T10:04:39.447959Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T10:04:39.447959Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"FZit8f/psFKDcf7bVVQjzlJTsjvg4OdFYl0amowVvFUUQ3LwFD5B75M6geIGWXg9/vR1BObtIqoek94yqmHSCg==","signature_status":"signed_v1","signed_at":"2026-07-05T10:04:39.448432Z","signed_message":"canonical_sha256_bytes"},"source_id":"2408.03496","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8785413ea03133c01e3e652a5b4f74b4ccc63c83120913b87e7ab091a13cdd1d","sha256:4356b641b1ccc1ea44ae0a3fdd497c1c1ca7eb546f8608ab7541029b7b4c81a0"],"state_sha256":"0f60668cc11191c9749189d11c3134e8edfdf822b5f7166d9c271b3922fff8cc"}