{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:6H2RJZAFVBYLGU3OGEYGMGXE5O","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":"e0df3aa0399b550e0d8e64c63b3017c531b522e27cab8a0e223458f811a367a8","cross_cats_sorted":["cs.NA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CE","submitted_at":"2011-10-05T04:55:59Z","title_canon_sha256":"1e98a19d00dc81049577a3d904395632491c03041f7c0dfc955f8e1ab9ce0af2"},"schema_version":"1.0","source":{"id":"1110.0895","kind":"arxiv","version":4}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1110.0895","created_at":"2026-05-18T00:07:33Z"},{"alias_kind":"arxiv_version","alias_value":"1110.0895v4","created_at":"2026-05-18T00:07:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1110.0895","created_at":"2026-05-18T00:07:33Z"},{"alias_kind":"pith_short_12","alias_value":"6H2RJZAFVBYL","created_at":"2026-05-18T12:26:22Z"},{"alias_kind":"pith_short_16","alias_value":"6H2RJZAFVBYLGU3O","created_at":"2026-05-18T12:26:22Z"},{"alias_kind":"pith_short_8","alias_value":"6H2RJZAF","created_at":"2026-05-18T12:26:22Z"}],"graph_snapshots":[{"event_id":"sha256:035d236fd7d86cd214f5277ca4c3b0874d9b37bb784b12e5a5bdef3296193345","target":"graph","created_at":"2026-05-18T00:07:33Z","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 consider a class of inverse problems where it is possible to aggregate the results of multiple experiments. This class includes problems where the forward model is the solution operator to linear ODEs or PDEs. The tremendous size of such problems motivates dimensionality reduction techniques based on randomly mixing experiments. These techniques break down, however, when robust data-fitting formulations are used, which are essential in cases of missing data, unusually large errors, and systematic features in the data unexplained by the forward model. We survey robust methods within a statis","authors_text":"Aleksandr Aravkin, Michael P. Friedlander, Tristan van Leeuwen","cross_cats":["cs.NA"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CE","submitted_at":"2011-10-05T04:55:59Z","title":"Robust inversion via semistochastic dimensionality reduction"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1110.0895","kind":"arxiv","version":4},"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":"sha256:0840132ccd25760b65ddad698544bf9120c91a16c90118ff325832fca8075a0f","target":"record","created_at":"2026-05-18T00:07:33Z","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":"e0df3aa0399b550e0d8e64c63b3017c531b522e27cab8a0e223458f811a367a8","cross_cats_sorted":["cs.NA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CE","submitted_at":"2011-10-05T04:55:59Z","title_canon_sha256":"1e98a19d00dc81049577a3d904395632491c03041f7c0dfc955f8e1ab9ce0af2"},"schema_version":"1.0","source":{"id":"1110.0895","kind":"arxiv","version":4}},"canonical_sha256":"f1f514e405a870b3536e3130661ae4eb8c64554ac703f1f1f928999010482d22","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f1f514e405a870b3536e3130661ae4eb8c64554ac703f1f1f928999010482d22","first_computed_at":"2026-05-18T00:07:33.524044Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:07:33.524044Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"2DTKNnhuKhU1pbmKXiZ+gcBXRsHeviSOfpYwOfHZA3TO8nvnAh4xP/Y5/0u1t4+FDLtvgFWTKDjFY3XUzyZDCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:07:33.524714Z","signed_message":"canonical_sha256_bytes"},"source_id":"1110.0895","source_kind":"arxiv","source_version":4}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0840132ccd25760b65ddad698544bf9120c91a16c90118ff325832fca8075a0f","sha256:035d236fd7d86cd214f5277ca4c3b0874d9b37bb784b12e5a5bdef3296193345"],"state_sha256":"4b4a726208c1fde9e0db208c3175afec49c0070025f555efaa59f909da8757fe"}