{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:EMI6JXKSXQZ4FQOGGCIB2NNYXC","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":"2db28ff96aa650783574b07a6fd7d57e087ca166fd2ebbea341c5715960d3873","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2012-11-19T01:44:42Z","title_canon_sha256":"4565cd672ac1bc5bdd7d8a0d71133bfd972d3899daf5d9fa4d67927fc9fba36c"},"schema_version":"1.0","source":{"id":"1211.4284","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1211.4284","created_at":"2026-05-18T03:40:27Z"},{"alias_kind":"arxiv_version","alias_value":"1211.4284v1","created_at":"2026-05-18T03:40:27Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1211.4284","created_at":"2026-05-18T03:40:27Z"},{"alias_kind":"pith_short_12","alias_value":"EMI6JXKSXQZ4","created_at":"2026-05-18T12:27:04Z"},{"alias_kind":"pith_short_16","alias_value":"EMI6JXKSXQZ4FQOG","created_at":"2026-05-18T12:27:04Z"},{"alias_kind":"pith_short_8","alias_value":"EMI6JXKS","created_at":"2026-05-18T12:27:04Z"}],"graph_snapshots":[{"event_id":"sha256:b9e012bf0cee319ed7e369888b12b4d11106db556a1a047cf071844954c8be42","target":"graph","created_at":"2026-05-18T03:40:27Z","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":"We examine the equations to obtain atomic pair distribution functions (PDFs) from x-ray, neutron and electron powder diffraction data with a view to obtaining reliable and accurate PDFs from the raw data using a largely \\emph{ad hoc} correction process. We find that this should be possible under certain circumstances that hold, to a reasonably good approximation, in many modern experiments. We describe a variational approach that could be applied to find data correction parameters that is highly automatable and should require little in the way of user inputs yet results in quantitatively relia","authors_text":"Christopher L. Farrow, Simon J. L. Billinge","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2012-11-19T01:44:42Z","title":"Towards a robust ad-hoc data correction approach that yields reliable atomic pair distribution functions from powder diffraction data"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1211.4284","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":"sha256:0e6e8baf4e8c056bb31ac66f4b134bc8d5186fbfa0973fd54002ea70708cc78b","target":"record","created_at":"2026-05-18T03:40:27Z","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":"2db28ff96aa650783574b07a6fd7d57e087ca166fd2ebbea341c5715960d3873","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2012-11-19T01:44:42Z","title_canon_sha256":"4565cd672ac1bc5bdd7d8a0d71133bfd972d3899daf5d9fa4d67927fc9fba36c"},"schema_version":"1.0","source":{"id":"1211.4284","kind":"arxiv","version":1}},"canonical_sha256":"2311e4dd52bc33c2c1c630901d35b8b8aa4c05939a192515d8930e704312e80c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2311e4dd52bc33c2c1c630901d35b8b8aa4c05939a192515d8930e704312e80c","first_computed_at":"2026-05-18T03:40:27.355988Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:40:27.355988Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"1vpOgxkYWk3I5efaHXpOcAA2oIwME69vu5UYLJb5ZAi3+WnKfjucJiNu6zBuGY2/lllmWzdTkhuEL9kOnuCrBA==","signature_status":"signed_v1","signed_at":"2026-05-18T03:40:27.356419Z","signed_message":"canonical_sha256_bytes"},"source_id":"1211.4284","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0e6e8baf4e8c056bb31ac66f4b134bc8d5186fbfa0973fd54002ea70708cc78b","sha256:b9e012bf0cee319ed7e369888b12b4d11106db556a1a047cf071844954c8be42"],"state_sha256":"f15a6bdb4f0ebfaff6e8b54dceaba714a10a4b25054b3bc35464af4ce482b81c"}