{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:BMJBWGLPWCJP5RH2EICMBXTXCG","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":"029880574f39642568d9fab505c6428667e4348818ddb0bddaa6e306050554ee","cross_cats_sorted":["cs.LG"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.flu-dyn","submitted_at":"2022-11-03T11:27:29Z","title_canon_sha256":"6fe7ea0d9784ad0c3f91cf039714b3c20b89f866b000afd255f84478b7f86d48"},"schema_version":"1.0","source":{"id":"2211.09715","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2211.09715","created_at":"2026-07-05T06:20:38Z"},{"alias_kind":"arxiv_version","alias_value":"2211.09715v2","created_at":"2026-07-05T06:20:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2211.09715","created_at":"2026-07-05T06:20:38Z"},{"alias_kind":"pith_short_12","alias_value":"BMJBWGLPWCJP","created_at":"2026-07-05T06:20:38Z"},{"alias_kind":"pith_short_16","alias_value":"BMJBWGLPWCJP5RH2","created_at":"2026-07-05T06:20:38Z"},{"alias_kind":"pith_short_8","alias_value":"BMJBWGLP","created_at":"2026-07-05T06:20:38Z"}],"graph_snapshots":[{"event_id":"sha256:d81ef4f1f87ef3bac7324f5857c9f96aed5b56b75caa50522e8c5525161376e3","target":"graph","created_at":"2026-07-05T06:20:38Z","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/2211.09715/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The present work investigates the use of physics-informed neural networks (PINNs) for the 3D reconstruction of unsteady gravity currents from limited data. In the PINN context, the flow fields are reconstructed by training a neural network whose objective function penalizes the mismatch between the network predictions and the observed data and embeds the underlying equations using automatic differentiation. This study relies on a high-fidelity numerical experiment of the canonical lock-exchange configuration. This allows us to benchmark quantitatively the PINNs reconstruction capabilities on s","authors_text":"Micka\\\"el Delcey, S\\'ebastien Kiesgen de Richter, Yoann Cheny","cross_cats":["cs.LG"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.flu-dyn","submitted_at":"2022-11-03T11:27:29Z","title":"Physics-informed neural networks for gravity currents reconstruction from limited data"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2211.09715","kind":"arxiv","version":2},"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":"sha256:089e1c466ec75a8fd08e8f0ca25b4c9b90adc4fd9b198ce99d409327b7924afb","target":"record","created_at":"2026-07-05T06:20:38Z","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":"029880574f39642568d9fab505c6428667e4348818ddb0bddaa6e306050554ee","cross_cats_sorted":["cs.LG"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.flu-dyn","submitted_at":"2022-11-03T11:27:29Z","title_canon_sha256":"6fe7ea0d9784ad0c3f91cf039714b3c20b89f866b000afd255f84478b7f86d48"},"schema_version":"1.0","source":{"id":"2211.09715","kind":"arxiv","version":2}},"canonical_sha256":"0b121b196fb092fec4fa2204c0de7711bc4ce52112c3cc8b60517bdf6fb9d84a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0b121b196fb092fec4fa2204c0de7711bc4ce52112c3cc8b60517bdf6fb9d84a","first_computed_at":"2026-07-05T06:20:38.281224Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T06:20:38.281224Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"a14+gsWcvHavemld9Z7xkmzUHYIdG7bUmTRBuEsnckqNxpEbkz2XMR4PzzcYv65J7unVnubb6xctxSpIvWsIBQ==","signature_status":"signed_v1","signed_at":"2026-07-05T06:20:38.281767Z","signed_message":"canonical_sha256_bytes"},"source_id":"2211.09715","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:089e1c466ec75a8fd08e8f0ca25b4c9b90adc4fd9b198ce99d409327b7924afb","sha256:d81ef4f1f87ef3bac7324f5857c9f96aed5b56b75caa50522e8c5525161376e3"],"state_sha256":"4d41d6a46c52c019202532dd7ab7a52f4cf064d22112a332dd018956fbda6db3"}