{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:G45CQLTIHFGKQ7GWQBICCYR57Q","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":"cf89b602eaf40b75b0e3d50cc403732046f7de0ca1f5fca93e6d205b59e08582","cross_cats_sorted":["physics.data-an","stat.ML"],"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"cs.LG","submitted_at":"2019-02-18T11:37:53Z","title_canon_sha256":"e344425bad73af32228db6d886c79ec867b8dac44f4ddc809a82340630613d05"},"schema_version":"1.0","source":{"id":"1902.06525","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1902.06525","created_at":"2026-05-17T23:53:45Z"},{"alias_kind":"arxiv_version","alias_value":"1902.06525v1","created_at":"2026-05-17T23:53:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1902.06525","created_at":"2026-05-17T23:53:45Z"},{"alias_kind":"pith_short_12","alias_value":"G45CQLTIHFGK","created_at":"2026-05-18T12:33:18Z"},{"alias_kind":"pith_short_16","alias_value":"G45CQLTIHFGKQ7GW","created_at":"2026-05-18T12:33:18Z"},{"alias_kind":"pith_short_8","alias_value":"G45CQLTI","created_at":"2026-05-18T12:33:18Z"}],"graph_snapshots":[{"event_id":"sha256:9adb0f415f417b6956c8ac4e783cbed6176c0e2394c0cb4641d2d8fde91a195c","target":"graph","created_at":"2026-05-17T23:53:45Z","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":"The objective of this work is to study the applicability of various Machine Learning algorithms for prediction of some rock properties which geoscientists usually define due to special lab analysis. We demonstrate that these special properties can be predicted only basing on routine core analysis (RCA) data. To validate the approach core samples from the reservoir with soluble rock matrix components (salts) were tested within 100+ laboratory experiments. The challenge of the experiments was to characterize the rate of salts in cores and alteration of porosity and permeability after reservoir d","authors_text":"Alexey Ryzhov, Andrei Erofeev, Denis Orlov, Dmitry Koroteev","cross_cats":["physics.data-an","stat.ML"],"headline":"","license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"cs.LG","submitted_at":"2019-02-18T11:37:53Z","title":"Prediction of Porosity and Permeability Alteration based on Machine Learning Algorithms"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1902.06525","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":"sha256:033e5ac9159f05fb2bf9ca1d04738cf85652a996d9188508536bd38ba9fa7861","target":"record","created_at":"2026-05-17T23:53:45Z","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":"cf89b602eaf40b75b0e3d50cc403732046f7de0ca1f5fca93e6d205b59e08582","cross_cats_sorted":["physics.data-an","stat.ML"],"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"cs.LG","submitted_at":"2019-02-18T11:37:53Z","title_canon_sha256":"e344425bad73af32228db6d886c79ec867b8dac44f4ddc809a82340630613d05"},"schema_version":"1.0","source":{"id":"1902.06525","kind":"arxiv","version":1}},"canonical_sha256":"373a282e68394ca87cd6805021623dfc0364f8138e6752c8e5de0dc811c240d4","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"373a282e68394ca87cd6805021623dfc0364f8138e6752c8e5de0dc811c240d4","first_computed_at":"2026-05-17T23:53:45.207912Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:53:45.207912Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"9qNsjtO8RV3q0edg95Je32otQ1zqxYZRtL739Dzfo0tOMnAQwtYG/LQGqdMwTgNJtwJb1a8Jpi2NE19rcfPKBg==","signature_status":"signed_v1","signed_at":"2026-05-17T23:53:45.208496Z","signed_message":"canonical_sha256_bytes"},"source_id":"1902.06525","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:033e5ac9159f05fb2bf9ca1d04738cf85652a996d9188508536bd38ba9fa7861","sha256:9adb0f415f417b6956c8ac4e783cbed6176c0e2394c0cb4641d2d8fde91a195c"],"state_sha256":"2cf7ee00b553c4ab2e8bbc5d8d6ede796442ae3bd4a1dd971451b9a603ea9b0c"}