{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2022:3ZW4S4RLXSC7DXWZYKYLI3UUOT","short_pith_number":"pith:3ZW4S4RL","schema_version":"1.0","canonical_sha256":"de6dc9722bbc85f1ded9c2b0b46e9474d5785fce7c1231c9694f8a7e7e74ff53","source":{"kind":"arxiv","id":"2208.09095","version":4},"attestation_state":"computed","paper":{"title":"Estimating and using information in inverse problems","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["cs.IT","cs.NA","math.AP","math.IT"],"primary_cat":"math.NA","authors_text":"Bart van Bloemen Waanders, Chris R. Johnson, Dennis K. Njeru, Wolfgang Bangerth","submitted_at":"2022-08-18T23:45:32Z","abstract_excerpt":"In inverse problems, one attempts to infer spatially variable functions from indirect measurements of a system. To practitioners of inverse problems, the concept of \"information\" is familiar when discussing key questions such as which parts of the function can be inferred accurately and which cannot. For example, it is generally understood that we can identify system parameters accurately only close to detectors, or along ray paths between sources and detectors, because we have \"the most information\" for these places. Although referenced in many publications, the \"information\" that is invoked "},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"2208.09095","kind":"arxiv","version":4},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"math.NA","submitted_at":"2022-08-18T23:45:32Z","cross_cats_sorted":["cs.IT","cs.NA","math.AP","math.IT"],"title_canon_sha256":"38e0cbe1ce36b02f0c91e7803b95d28d92a58750f4ea2b3f65d499d933fedb66","abstract_canon_sha256":"507ca4f3f4a2d2a57d711e8be5f5c63291176a65eaf2d6cbd206b57a07b3f87d"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T10:12:12.348306Z","signature_b64":"DB+GTIKiSzkKx/ivpzKrD4udevbXWDehHU7EhzZYNIkGr5LlNsYDiwq9xh6qJ39J6nKHftKiEejfT9HzkVnvCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"de6dc9722bbc85f1ded9c2b0b46e9474d5785fce7c1231c9694f8a7e7e74ff53","last_reissued_at":"2026-07-05T10:12:12.347857Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T10:12:12.347857Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Estimating and using information in inverse problems","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["cs.IT","cs.NA","math.AP","math.IT"],"primary_cat":"math.NA","authors_text":"Bart van Bloemen Waanders, Chris R. Johnson, Dennis K. Njeru, Wolfgang Bangerth","submitted_at":"2022-08-18T23:45:32Z","abstract_excerpt":"In inverse problems, one attempts to infer spatially variable functions from indirect measurements of a system. To practitioners of inverse problems, the concept of \"information\" is familiar when discussing key questions such as which parts of the function can be inferred accurately and which cannot. For example, it is generally understood that we can identify system parameters accurately only close to detectors, or along ray paths between sources and detectors, because we have \"the most information\" for these places. Although referenced in many publications, the \"information\" that is invoked "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2208.09095","kind":"arxiv","version":4},"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/2208.09095/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"},"aliases":[{"alias_kind":"arxiv","alias_value":"2208.09095","created_at":"2026-07-05T10:12:12.347907+00:00"},{"alias_kind":"arxiv_version","alias_value":"2208.09095v4","created_at":"2026-07-05T10:12:12.347907+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2208.09095","created_at":"2026-07-05T10:12:12.347907+00:00"},{"alias_kind":"pith_short_12","alias_value":"3ZW4S4RLXSC7","created_at":"2026-07-05T10:12:12.347907+00:00"},{"alias_kind":"pith_short_16","alias_value":"3ZW4S4RLXSC7DXWZ","created_at":"2026-07-05T10:12:12.347907+00:00"},{"alias_kind":"pith_short_8","alias_value":"3ZW4S4RL","created_at":"2026-07-05T10:12:12.347907+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/3ZW4S4RLXSC7DXWZYKYLI3UUOT","json":"https://pith.science/pith/3ZW4S4RLXSC7DXWZYKYLI3UUOT.json","graph_json":"https://pith.science/api/pith-number/3ZW4S4RLXSC7DXWZYKYLI3UUOT/graph.json","events_json":"https://pith.science/api/pith-number/3ZW4S4RLXSC7DXWZYKYLI3UUOT/events.json","paper":"https://pith.science/paper/3ZW4S4RL"},"agent_actions":{"view_html":"https://pith.science/pith/3ZW4S4RLXSC7DXWZYKYLI3UUOT","download_json":"https://pith.science/pith/3ZW4S4RLXSC7DXWZYKYLI3UUOT.json","view_paper":"https://pith.science/paper/3ZW4S4RL","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2208.09095&json=true","fetch_graph":"https://pith.science/api/pith-number/3ZW4S4RLXSC7DXWZYKYLI3UUOT/graph.json","fetch_events":"https://pith.science/api/pith-number/3ZW4S4RLXSC7DXWZYKYLI3UUOT/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/3ZW4S4RLXSC7DXWZYKYLI3UUOT/action/timestamp_anchor","attest_storage":"https://pith.science/pith/3ZW4S4RLXSC7DXWZYKYLI3UUOT/action/storage_attestation","attest_author":"https://pith.science/pith/3ZW4S4RLXSC7DXWZYKYLI3UUOT/action/author_attestation","sign_citation":"https://pith.science/pith/3ZW4S4RLXSC7DXWZYKYLI3UUOT/action/citation_signature","submit_replication":"https://pith.science/pith/3ZW4S4RLXSC7DXWZYKYLI3UUOT/action/replication_record"}},"created_at":"2026-07-05T10:12:12.347907+00:00","updated_at":"2026-07-05T10:12:12.347907+00:00"}