{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:PRTJNVVAGX3MNPIILMW6YPOXFB","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":"519638791b3b28298b34aa5576c8191ec70aed03f78749bb9134609fc923176a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.geo-ph","submitted_at":"2024-01-21T14:24:44Z","title_canon_sha256":"7fc1a005a5a0060f9583d26ba3173c3d529e0ffaa5ac2682980f2c761e169695"},"schema_version":"1.0","source":{"id":"2401.11502","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2401.11502","created_at":"2026-07-05T07:35:51Z"},{"alias_kind":"arxiv_version","alias_value":"2401.11502v1","created_at":"2026-07-05T07:35:51Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2401.11502","created_at":"2026-07-05T07:35:51Z"},{"alias_kind":"pith_short_12","alias_value":"PRTJNVVAGX3M","created_at":"2026-07-05T07:35:51Z"},{"alias_kind":"pith_short_16","alias_value":"PRTJNVVAGX3MNPII","created_at":"2026-07-05T07:35:51Z"},{"alias_kind":"pith_short_8","alias_value":"PRTJNVVA","created_at":"2026-07-05T07:35:51Z"}],"graph_snapshots":[{"event_id":"sha256:b1bc5427428014748ac1a35fd24d41c8448c140c9dab49590dd2bf93a3d5dfc3","target":"graph","created_at":"2026-07-05T07:35:51Z","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/2401.11502/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Physics-informed neural networks (PINNs) provide a flexible and effective alternative for estimating seismic wavefield solutions due to their typical mesh-free and unsupervised features. However, their accuracy and training cost restrict their applicability. To address these issues, we propose a novel initialization for PINNs based on meta learning to enhance their performance. In our framework, we first utilize meta learning to train a common network initialization for a distribution of medium parameters (i.e. velocity models). This phase employs a unique training data container, comprising a","authors_text":"Shijun Cheng, Tariq Alkhalifah","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.geo-ph","submitted_at":"2024-01-21T14:24:44Z","title":"Meta-PINN: Meta learning for improved neural network wavefield solutions"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2401.11502","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:fc85ed8a0b188c81679a17097a1d9c31a7a118f8e3678f2c794dc115919cfd6c","target":"record","created_at":"2026-07-05T07:35:51Z","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":"519638791b3b28298b34aa5576c8191ec70aed03f78749bb9134609fc923176a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.geo-ph","submitted_at":"2024-01-21T14:24:44Z","title_canon_sha256":"7fc1a005a5a0060f9583d26ba3173c3d529e0ffaa5ac2682980f2c761e169695"},"schema_version":"1.0","source":{"id":"2401.11502","kind":"arxiv","version":1}},"canonical_sha256":"7c6696d6a035f6c6bd085b2dec3dd72874f6fa74807025c413ec169b767c6323","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7c6696d6a035f6c6bd085b2dec3dd72874f6fa74807025c413ec169b767c6323","first_computed_at":"2026-07-05T07:35:51.942865Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T07:35:51.942865Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"zwYF9TCxuniouImTilwNLsSbMFBelD7qOAFh9hBh0/OnL/xZ84cVunGAVcVaOy11/LyAKj6FP2tSJbD7EbCWCQ==","signature_status":"signed_v1","signed_at":"2026-07-05T07:35:51.943218Z","signed_message":"canonical_sha256_bytes"},"source_id":"2401.11502","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:fc85ed8a0b188c81679a17097a1d9c31a7a118f8e3678f2c794dc115919cfd6c","sha256:b1bc5427428014748ac1a35fd24d41c8448c140c9dab49590dd2bf93a3d5dfc3"],"state_sha256":"64ffa20ef671b9f7ee67266dac64b5015560ec6451b2de163f8545a8b0cb0ab6"}