{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:A2WGLVDCRLYPLFPSCA26M3QFZL","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":"627d7d5fe94a8d1e38bef1c916a59034b894e5c017bae9cbfa2d01d505585cc5","cross_cats_sorted":["physics.comp-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.chem-ph","submitted_at":"2019-01-30T13:42:53Z","title_canon_sha256":"9e96a77adab1acdb51a23693c6a09fc73796caae66eb74392cf85c6988962f36"},"schema_version":"1.0","source":{"id":"1901.10822","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1901.10822","created_at":"2026-05-17T23:43:03Z"},{"alias_kind":"arxiv_version","alias_value":"1901.10822v1","created_at":"2026-05-17T23:43:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1901.10822","created_at":"2026-05-17T23:43:03Z"},{"alias_kind":"pith_short_12","alias_value":"A2WGLVDCRLYP","created_at":"2026-05-18T12:33:12Z"},{"alias_kind":"pith_short_16","alias_value":"A2WGLVDCRLYPLFPS","created_at":"2026-05-18T12:33:12Z"},{"alias_kind":"pith_short_8","alias_value":"A2WGLVDC","created_at":"2026-05-18T12:33:12Z"}],"graph_snapshots":[{"event_id":"sha256:744eda4e9e475bdb9fce2fe8c6e82264bb5dd4ba6db9601720fed0a32ad33999","target":"graph","created_at":"2026-05-17T23:43:03Z","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 work we explore the potential of a new data-driven approach to the design of exchange-correlation (XC) functionals. The approach, inspired by convolutional filters in computer vision and surrogate functions from optimization, utilizes convolutions of the electron density to form a feature space to represent local electronic environments and neural networks to map the features to the exchange-correlation energy density. These features are orbital free, and provide a systematic route to including information at various length scales. This work shows that convolutional descriptors are the","authors_text":"Andrew J. Medford, Xiangyun Lei","cross_cats":["physics.comp-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.chem-ph","submitted_at":"2019-01-30T13:42:53Z","title":"Design and Analysis of Machine Learning Exchange-Correlation Functionals via Rotationally Invariant Convolutional Descriptors"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1901.10822","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:a55d548b2aaddd6c13c211ac048fb645ebb8f81a296384d842b44e94d821f978","target":"record","created_at":"2026-05-17T23:43:03Z","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":"627d7d5fe94a8d1e38bef1c916a59034b894e5c017bae9cbfa2d01d505585cc5","cross_cats_sorted":["physics.comp-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.chem-ph","submitted_at":"2019-01-30T13:42:53Z","title_canon_sha256":"9e96a77adab1acdb51a23693c6a09fc73796caae66eb74392cf85c6988962f36"},"schema_version":"1.0","source":{"id":"1901.10822","kind":"arxiv","version":1}},"canonical_sha256":"06ac65d4628af0f595f21035e66e05cac75e293a2896b1a7f433a06ecb8d6105","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"06ac65d4628af0f595f21035e66e05cac75e293a2896b1a7f433a06ecb8d6105","first_computed_at":"2026-05-17T23:43:03.614294Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:43:03.614294Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"3G7bfQ/+FM3IrClCq6or4ziqhULGx5XDqtWLZyBezLsyENcuT443ODVS3ic1tF0jCbOtK9EWum/82ACQnCm8AA==","signature_status":"signed_v1","signed_at":"2026-05-17T23:43:03.614741Z","signed_message":"canonical_sha256_bytes"},"source_id":"1901.10822","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a55d548b2aaddd6c13c211ac048fb645ebb8f81a296384d842b44e94d821f978","sha256:744eda4e9e475bdb9fce2fe8c6e82264bb5dd4ba6db9601720fed0a32ad33999"],"state_sha256":"4a0faefb3ed6d282f74126d4ba2c4b0f30671261043ec197b46d92e2d79ee286"}