{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:V352CPCKGYVK2MBTEMN4CCDWXA","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":"49e419ca53f6b7d92ead6739c51122331bf654b4b1e0a3987cf05e995aa68ee2","cross_cats_sorted":["physics.comp-ph","physics.data-an"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.flu-dyn","submitted_at":"2021-02-02T13:48:58Z","title_canon_sha256":"7ad37eb09057a630a345ac2e4f8b9e40d3d46ddd8946e2a7870f53f7c9277aa7"},"schema_version":"1.0","source":{"id":"2102.01487","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2102.01487","created_at":"2026-07-05T03:40:30Z"},{"alias_kind":"arxiv_version","alias_value":"2102.01487v3","created_at":"2026-07-05T03:40:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2102.01487","created_at":"2026-07-05T03:40:30Z"},{"alias_kind":"pith_short_12","alias_value":"V352CPCKGYVK","created_at":"2026-07-05T03:40:30Z"},{"alias_kind":"pith_short_16","alias_value":"V352CPCKGYVK2MBT","created_at":"2026-07-05T03:40:30Z"},{"alias_kind":"pith_short_8","alias_value":"V352CPCK","created_at":"2026-07-05T03:40:30Z"}],"graph_snapshots":[{"event_id":"sha256:9cbe276184bf2d6184fa2adf3d72c6e9eedb7ccfb6205373c8336f289df01fae","target":"graph","created_at":"2026-07-05T03:40:30Z","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/2102.01487/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Generalizability of machine-learning (ML) based turbulence closures to accurately predict unseen practical flows remains an important challenge. At the Reynolds-averaged Navier-Stokes (RANS) level, NN-based turbulence closure modeling is rendered difficult due to two important reasons: inherent complexity of the constitutive relation arising from flow-dependent non-linearity and bifurcations; and, inordinate difficulty in obtaining high-fidelity data covering the entire parameter space of interest. In this context, the objective of the work is to investigate the approximation capabilities of s","authors_text":"Freddie Witherden, Salar Taghizadeh, Sharath Girimaji, Yassin Hassan","cross_cats":["physics.comp-ph","physics.data-an"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.flu-dyn","submitted_at":"2021-02-02T13:48:58Z","title":"Turbulence closure modeling with data-driven techniques: Investigation of generalizable deep neural networks"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2102.01487","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:e9d3e345ed0cf111ce3356fda691416b5dfc05d8fea4d5a92f84ffde8f869627","target":"record","created_at":"2026-07-05T03:40:30Z","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":"49e419ca53f6b7d92ead6739c51122331bf654b4b1e0a3987cf05e995aa68ee2","cross_cats_sorted":["physics.comp-ph","physics.data-an"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.flu-dyn","submitted_at":"2021-02-02T13:48:58Z","title_canon_sha256":"7ad37eb09057a630a345ac2e4f8b9e40d3d46ddd8946e2a7870f53f7c9277aa7"},"schema_version":"1.0","source":{"id":"2102.01487","kind":"arxiv","version":3}},"canonical_sha256":"aefba13c4a362aad3033231bc10876b82aefb517e93738cecb3df90895ca15a4","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"aefba13c4a362aad3033231bc10876b82aefb517e93738cecb3df90895ca15a4","first_computed_at":"2026-07-05T03:40:30.020771Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T03:40:30.020771Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"vQAiaSSRm2KLYx8fHDIFXZFbCB3A/389wfQ9SqdF7VokXvMHsoQtgw3tRsyfkERLNLie/DNCoUPW7yH8I3ZhDQ==","signature_status":"signed_v1","signed_at":"2026-07-05T03:40:30.021233Z","signed_message":"canonical_sha256_bytes"},"source_id":"2102.01487","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e9d3e345ed0cf111ce3356fda691416b5dfc05d8fea4d5a92f84ffde8f869627","sha256:9cbe276184bf2d6184fa2adf3d72c6e9eedb7ccfb6205373c8336f289df01fae"],"state_sha256":"9da4d24ed8c159c99cd64f6491ff4396d1e948a1f8cc57e24400f8c29dde1c11"}