{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:WWR63VLMCNH75C66KFLLDXTYU5","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":"6367993b207fe8c460803199619da42b3577e571c502c67c9b3d15405d254c38","cross_cats_sorted":["cs.LG"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"math.OC","submitted_at":"2019-01-24T17:37:12Z","title_canon_sha256":"36c0b1132161880aa6718466b204660ae71b9076fdcd9eb7dd683d3c8eea6d6b"},"schema_version":"1.0","source":{"id":"1901.08523","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1901.08523","created_at":"2026-05-17T23:55:35Z"},{"alias_kind":"arxiv_version","alias_value":"1901.08523v1","created_at":"2026-05-17T23:55:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1901.08523","created_at":"2026-05-17T23:55:35Z"},{"alias_kind":"pith_short_12","alias_value":"WWR63VLMCNH7","created_at":"2026-05-18T12:33:33Z"},{"alias_kind":"pith_short_16","alias_value":"WWR63VLMCNH75C66","created_at":"2026-05-18T12:33:33Z"},{"alias_kind":"pith_short_8","alias_value":"WWR63VLM","created_at":"2026-05-18T12:33:33Z"}],"graph_snapshots":[{"event_id":"sha256:9321e5fa5709615f87238c5ce322e84ed3e40fe161305c35a5bf5f4f5c251482","target":"graph","created_at":"2026-05-17T23:55:35Z","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":"This paper introduces an efficient second-order method for solving the elastic net problem. Its key innovation is a computationally efficient technique for injecting curvature information in the optimization process which admits a strong theoretical performance guarantee. In particular, we show improved run time over popular first-order methods and quantify the speed-up in terms of statistical measures of the data matrix. The improved time complexity is the result of an extensive exploitation of the problem structure and a careful combination of second-order information, variance reduction tec","authors_text":"Mikael Johansson, Vien V. Mai","cross_cats":["cs.LG"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"math.OC","submitted_at":"2019-01-24T17:37:12Z","title":"Curvature-Exploiting Acceleration of Elastic Net Computations"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1901.08523","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":"sha256:8a5dac005db70036718c34fa1030bbcd103832391e28899d6c0d61dc3943088a","target":"record","created_at":"2026-05-17T23:55:35Z","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":"6367993b207fe8c460803199619da42b3577e571c502c67c9b3d15405d254c38","cross_cats_sorted":["cs.LG"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"math.OC","submitted_at":"2019-01-24T17:37:12Z","title_canon_sha256":"36c0b1132161880aa6718466b204660ae71b9076fdcd9eb7dd683d3c8eea6d6b"},"schema_version":"1.0","source":{"id":"1901.08523","kind":"arxiv","version":1}},"canonical_sha256":"b5a3edd56c134ffe8bde5156b1de78a7461aed532bc3637b98e66964f316f80b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b5a3edd56c134ffe8bde5156b1de78a7461aed532bc3637b98e66964f316f80b","first_computed_at":"2026-05-17T23:55:35.275527Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:55:35.275527Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"TtN2VpLfGJJSgKVsugBDiIEa2P91eDDHZ6Dd0LqldkCbhhLZKORMEtL8s6VVbRgD5XgtrzUFAeaqkdRy+aQVCg==","signature_status":"signed_v1","signed_at":"2026-05-17T23:55:35.276071Z","signed_message":"canonical_sha256_bytes"},"source_id":"1901.08523","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8a5dac005db70036718c34fa1030bbcd103832391e28899d6c0d61dc3943088a","sha256:9321e5fa5709615f87238c5ce322e84ed3e40fe161305c35a5bf5f4f5c251482"],"state_sha256":"038bd5275328775476b0fe635908d379776711f3fa6993975fc35145bd063906"}