{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:XS4IJC5QZHQU3PJHPFALYULXHA","short_pith_number":"pith:XS4IJC5Q","canonical_record":{"source":{"id":"1905.10874","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.OC","submitted_at":"2019-05-26T20:33:51Z","cross_cats_sorted":[],"title_canon_sha256":"8cf50120886d63c658ce6a3913e9501cda6f2dff7692587e10ae497638ba4ec1","abstract_canon_sha256":"f536feb4f6713f1a9103bffe309d93576d2fa67e5fa2b7de4e6055994f6fd55d"},"schema_version":"1.0"},"canonical_sha256":"bcb8848bb0c9e14dbd277940bc5177380c04f10a9baec7cb2d4619e895872b7d","source":{"kind":"arxiv","id":"1905.10874","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1905.10874","created_at":"2026-07-05T00:09:25Z"},{"alias_kind":"arxiv_version","alias_value":"1905.10874v2","created_at":"2026-07-05T00:09:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1905.10874","created_at":"2026-07-05T00:09:25Z"},{"alias_kind":"pith_short_12","alias_value":"XS4IJC5QZHQU","created_at":"2026-07-05T00:09:25Z"},{"alias_kind":"pith_short_16","alias_value":"XS4IJC5QZHQU3PJH","created_at":"2026-07-05T00:09:25Z"},{"alias_kind":"pith_short_8","alias_value":"XS4IJC5Q","created_at":"2026-07-05T00:09:25Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:XS4IJC5QZHQU3PJHPFALYULXHA","target":"record","payload":{"canonical_record":{"source":{"id":"1905.10874","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.OC","submitted_at":"2019-05-26T20:33:51Z","cross_cats_sorted":[],"title_canon_sha256":"8cf50120886d63c658ce6a3913e9501cda6f2dff7692587e10ae497638ba4ec1","abstract_canon_sha256":"f536feb4f6713f1a9103bffe309d93576d2fa67e5fa2b7de4e6055994f6fd55d"},"schema_version":"1.0"},"canonical_sha256":"bcb8848bb0c9e14dbd277940bc5177380c04f10a9baec7cb2d4619e895872b7d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:09:25.767499Z","signature_b64":"ZcHHIzkUnzILpjuxt9UxP1c1OmV6kMFhPGaOlKoege6ORSLyEMzRJayEMiz1m7rGh3WWZDywdSQSBPHRuw7UBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"bcb8848bb0c9e14dbd277940bc5177380c04f10a9baec7cb2d4619e895872b7d","last_reissued_at":"2026-07-05T00:09:25.767084Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:09:25.767084Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1905.10874","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T00:09:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"FOgHGWc5qbaHpFMBJVAcf0ZIVJCEnbQcStx9NvFGZf1goOne8oAyVNObCM8hNnlAm420FDV7ahtM3+Q32PxYCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T00:36:49.327326Z"},"content_sha256":"6fa0093a7eb5613653a8febfdd53b1f385a6fd35162667bb5760cd6e1e8dbd63","schema_version":"1.0","event_id":"sha256:6fa0093a7eb5613653a8febfdd53b1f385a6fd35162667bb5760cd6e1e8dbd63"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:XS4IJC5QZHQU3PJHPFALYULXHA","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"RSN: Randomized Subspace Newton","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"math.OC","authors_text":"Dmitry Kovalev, Felix Lieder, Peter Richt\\'arik, Robert M. Gower","submitted_at":"2019-05-26T20:33:51Z","abstract_excerpt":"We develop a randomized Newton method capable of solving learning problems with huge dimensional feature spaces, which is a common setting in applications such as medical imaging, genomics and seismology. Our method leverages randomized sketching in a new way, by finding the Newton direction constrained to the space spanned by a random sketch. We develop a simple global linear convergence theory that holds for practically all sketching techniques, which gives the practitioners the freedom to design custom sketching approaches suitable for particular applications. We perform numerical experimen"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1905.10874","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/1905.10874/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T00:09:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"rsuzHSjUWeoIQHuQ535yV/wDagWqST7nw7sCX5McMiS6ig5TVbhMWPKgr7O1kgiTmslwXUbZXYc69z62daNrDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T00:36:49.327745Z"},"content_sha256":"b082dbb19588ee89ed1266810b50281c3fc34178cbbce231a182ab13d6cbe3f6","schema_version":"1.0","event_id":"sha256:b082dbb19588ee89ed1266810b50281c3fc34178cbbce231a182ab13d6cbe3f6"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/XS4IJC5QZHQU3PJHPFALYULXHA/bundle.json","state_url":"https://pith.science/pith/XS4IJC5QZHQU3PJHPFALYULXHA/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/XS4IJC5QZHQU3PJHPFALYULXHA/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-08-05T00:36:49Z","links":{"resolver":"https://pith.science/pith/XS4IJC5QZHQU3PJHPFALYULXHA","bundle":"https://pith.science/pith/XS4IJC5QZHQU3PJHPFALYULXHA/bundle.json","state":"https://pith.science/pith/XS4IJC5QZHQU3PJHPFALYULXHA/state.json","well_known_bundle":"https://pith.science/.well-known/pith/XS4IJC5QZHQU3PJHPFALYULXHA/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:XS4IJC5QZHQU3PJHPFALYULXHA","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":"f536feb4f6713f1a9103bffe309d93576d2fa67e5fa2b7de4e6055994f6fd55d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.OC","submitted_at":"2019-05-26T20:33:51Z","title_canon_sha256":"8cf50120886d63c658ce6a3913e9501cda6f2dff7692587e10ae497638ba4ec1"},"schema_version":"1.0","source":{"id":"1905.10874","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1905.10874","created_at":"2026-07-05T00:09:25Z"},{"alias_kind":"arxiv_version","alias_value":"1905.10874v2","created_at":"2026-07-05T00:09:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1905.10874","created_at":"2026-07-05T00:09:25Z"},{"alias_kind":"pith_short_12","alias_value":"XS4IJC5QZHQU","created_at":"2026-07-05T00:09:25Z"},{"alias_kind":"pith_short_16","alias_value":"XS4IJC5QZHQU3PJH","created_at":"2026-07-05T00:09:25Z"},{"alias_kind":"pith_short_8","alias_value":"XS4IJC5Q","created_at":"2026-07-05T00:09:25Z"}],"graph_snapshots":[{"event_id":"sha256:b082dbb19588ee89ed1266810b50281c3fc34178cbbce231a182ab13d6cbe3f6","target":"graph","created_at":"2026-07-05T00:09:25Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/1905.10874/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We develop a randomized Newton method capable of solving learning problems with huge dimensional feature spaces, which is a common setting in applications such as medical imaging, genomics and seismology. Our method leverages randomized sketching in a new way, by finding the Newton direction constrained to the space spanned by a random sketch. We develop a simple global linear convergence theory that holds for practically all sketching techniques, which gives the practitioners the freedom to design custom sketching approaches suitable for particular applications. We perform numerical experimen","authors_text":"Dmitry Kovalev, Felix Lieder, Peter Richt\\'arik, Robert M. Gower","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.OC","submitted_at":"2019-05-26T20:33:51Z","title":"RSN: Randomized Subspace Newton"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1905.10874","kind":"arxiv","version":2},"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":"sha256:6fa0093a7eb5613653a8febfdd53b1f385a6fd35162667bb5760cd6e1e8dbd63","target":"record","created_at":"2026-07-05T00:09:25Z","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":"f536feb4f6713f1a9103bffe309d93576d2fa67e5fa2b7de4e6055994f6fd55d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.OC","submitted_at":"2019-05-26T20:33:51Z","title_canon_sha256":"8cf50120886d63c658ce6a3913e9501cda6f2dff7692587e10ae497638ba4ec1"},"schema_version":"1.0","source":{"id":"1905.10874","kind":"arxiv","version":2}},"canonical_sha256":"bcb8848bb0c9e14dbd277940bc5177380c04f10a9baec7cb2d4619e895872b7d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"bcb8848bb0c9e14dbd277940bc5177380c04f10a9baec7cb2d4619e895872b7d","first_computed_at":"2026-07-05T00:09:25.767084Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:09:25.767084Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ZcHHIzkUnzILpjuxt9UxP1c1OmV6kMFhPGaOlKoege6ORSLyEMzRJayEMiz1m7rGh3WWZDywdSQSBPHRuw7UBA==","signature_status":"signed_v1","signed_at":"2026-07-05T00:09:25.767499Z","signed_message":"canonical_sha256_bytes"},"source_id":"1905.10874","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6fa0093a7eb5613653a8febfdd53b1f385a6fd35162667bb5760cd6e1e8dbd63","sha256:b082dbb19588ee89ed1266810b50281c3fc34178cbbce231a182ab13d6cbe3f6"],"state_sha256":"978781624f33bc9db860e9dcfe4138f9041cf89dd5dfe78c8e887060c6426667"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4agY8bcSKuFC0jlkOUN8OHuIt1wTsf4fy2NzUMy+m5E0c9LfnwlmAtg2jVGT9emiBAOhBlNcjlPSw2vMdyhnAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-05T00:36:49.329969Z","bundle_sha256":"a94b9da9d6334c94963e3e541ff37e938bc55f3c255cb6202644870da7053941"}}