{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:VAT4ZJOOEBPWKDFXGV27LZBTXB","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":"836dbc6961251d2634191eced74fdc502df9ecc7b006f6efd25d114f69aab96b","cross_cats_sorted":["physics.atom-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.comp-ph","submitted_at":"2018-08-11T10:15:38Z","title_canon_sha256":"7a5ef23de8fdc545d55ee681774706a28e3b1db963a62e5864b7f3f9a878f8bc"},"schema_version":"1.0","source":{"id":"1808.03783","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1808.03783","created_at":"2026-05-18T00:00:34Z"},{"alias_kind":"arxiv_version","alias_value":"1808.03783v3","created_at":"2026-05-18T00:00:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1808.03783","created_at":"2026-05-18T00:00:34Z"},{"alias_kind":"pith_short_12","alias_value":"VAT4ZJOOEBPW","created_at":"2026-05-18T12:32:59Z"},{"alias_kind":"pith_short_16","alias_value":"VAT4ZJOOEBPWKDFX","created_at":"2026-05-18T12:32:59Z"},{"alias_kind":"pith_short_8","alias_value":"VAT4ZJOO","created_at":"2026-05-18T12:32:59Z"}],"graph_snapshots":[{"event_id":"sha256:449099dcc4b63e06353e3dbabb2d6d83b541b77f8fc359c3c856400c4ccb4a4b","target":"graph","created_at":"2026-05-18T00:00:34Z","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"},"paper":{"abstract_excerpt":"In this paper we test two strategies to improving the accuracy of machine-learning potentials, namely adding more fitting parameters thus making use of large volumes of available quantum-mechanical data, and adding a charge-equilibration model to account for ionic nature of the SiO2 bonding. To that end, we compare Moment Tensor Potentials (MTPs) and MTPs combined with the charge-equilibration (QEq) model (MTP+QEq) fitted to a density functional theory dataset of alpha-quartz SiO2-based structures. In order to make a meaningful comparison, in addition to the accuracy, we assess the uncertainty","authors_text":"Alexander V. Shapeev, Ivan S. Novikov","cross_cats":["physics.atom-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.comp-ph","submitted_at":"2018-08-11T10:15:38Z","title":"Improving accuracy of interatomic potentials: more physics or more data? A case study of silica"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1808.03783","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:d346332db61b5b6efb89e3e8375c6ee64a3ba722578f4fcabaa7a5bd2d9d5fd5","target":"record","created_at":"2026-05-18T00:00:34Z","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":"836dbc6961251d2634191eced74fdc502df9ecc7b006f6efd25d114f69aab96b","cross_cats_sorted":["physics.atom-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.comp-ph","submitted_at":"2018-08-11T10:15:38Z","title_canon_sha256":"7a5ef23de8fdc545d55ee681774706a28e3b1db963a62e5864b7f3f9a878f8bc"},"schema_version":"1.0","source":{"id":"1808.03783","kind":"arxiv","version":3}},"canonical_sha256":"a827cca5ce205f650cb73575f5e433b854d73074c5516ab776b140324e36789d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a827cca5ce205f650cb73575f5e433b854d73074c5516ab776b140324e36789d","first_computed_at":"2026-05-18T00:00:34.900043Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:00:34.900043Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"36IiaFpojcRjaeIa+oJx80PFL2Cn3/sUlHphC2bT5giNxephISDALwcpHi0U9HlI1dlWjim7Dr7bGmasSvAMCg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:00:34.900543Z","signed_message":"canonical_sha256_bytes"},"source_id":"1808.03783","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d346332db61b5b6efb89e3e8375c6ee64a3ba722578f4fcabaa7a5bd2d9d5fd5","sha256:449099dcc4b63e06353e3dbabb2d6d83b541b77f8fc359c3c856400c4ccb4a4b"],"state_sha256":"015ecc4486fee5c010deb2d8d448ec42a2356f6f7050de5a62dbcd0522b81dd2"}