{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2017:PPSCA35BVSEXYR272GX3PIW2RY","short_pith_number":"pith:PPSCA35B","schema_version":"1.0","canonical_sha256":"7be4206fa1ac897c475fd1afb7a2da8e1cb5588c2bdf977ecf4e2212bd5b7407","source":{"kind":"arxiv","id":"1708.07801","version":4},"attestation_state":"computed","paper":{"title":"Nudging the particle filter","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["math.PR"],"primary_cat":"stat.CO","authors_text":"Joaqu\\'in M\\'iguez, \\\"Omer Deniz Aky{\\i}ld{\\i}z","submitted_at":"2017-08-25T16:31:49Z","abstract_excerpt":"We investigate a new sampling scheme aimed at improving the performance of particle filters whenever (a) there is a significant mismatch between the assumed model dynamics and the actual system, or (b) the posterior probability tends to concentrate in relatively small regions of the state space. The proposed scheme pushes some particles towards specific regions where the likelihood is expected to be high, an operation known as nudging in the geophysics literature. We re-interpret nudging in a form applicable to any particle filtering scheme, as it does not involve any changes in the rest of th"},"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":"1708.07801","kind":"arxiv","version":4},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"stat.CO","submitted_at":"2017-08-25T16:31:49Z","cross_cats_sorted":["math.PR"],"title_canon_sha256":"2e8fd2b69c5113a3064f3c0baa00f319edab2c1132c1b3eec5a6e8b88d36d19c","abstract_canon_sha256":"f3ebed69f87bffc523f3593d9caffac7dd3c8e78b0a12b2576af98a1dac8b2d1"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:51:00.187858Z","signature_b64":"qHd5u8q1GUZHOEqkPI0HWOcfXbs1ZthG9a21He3IWGCbZmwwcOmdw0pwvCkV02c4QPxAJbCIbVwscKaT4WKhAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7be4206fa1ac897c475fd1afb7a2da8e1cb5588c2bdf977ecf4e2212bd5b7407","last_reissued_at":"2026-05-17T23:51:00.187296Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:51:00.187296Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Nudging the particle filter","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["math.PR"],"primary_cat":"stat.CO","authors_text":"Joaqu\\'in M\\'iguez, \\\"Omer Deniz Aky{\\i}ld{\\i}z","submitted_at":"2017-08-25T16:31:49Z","abstract_excerpt":"We investigate a new sampling scheme aimed at improving the performance of particle filters whenever (a) there is a significant mismatch between the assumed model dynamics and the actual system, or (b) the posterior probability tends to concentrate in relatively small regions of the state space. The proposed scheme pushes some particles towards specific regions where the likelihood is expected to be high, an operation known as nudging in the geophysics literature. We re-interpret nudging in a form applicable to any particle filtering scheme, as it does not involve any changes in the rest of th"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1708.07801","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":""},"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":"1708.07801","created_at":"2026-05-17T23:51:00.187414+00:00"},{"alias_kind":"arxiv_version","alias_value":"1708.07801v4","created_at":"2026-05-17T23:51:00.187414+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1708.07801","created_at":"2026-05-17T23:51:00.187414+00:00"},{"alias_kind":"pith_short_12","alias_value":"PPSCA35BVSEX","created_at":"2026-05-18T12:31:37.085036+00:00"},{"alias_kind":"pith_short_16","alias_value":"PPSCA35BVSEXYR27","created_at":"2026-05-18T12:31:37.085036+00:00"},{"alias_kind":"pith_short_8","alias_value":"PPSCA35B","created_at":"2026-05-18T12:31:37.085036+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/PPSCA35BVSEXYR272GX3PIW2RY","json":"https://pith.science/pith/PPSCA35BVSEXYR272GX3PIW2RY.json","graph_json":"https://pith.science/api/pith-number/PPSCA35BVSEXYR272GX3PIW2RY/graph.json","events_json":"https://pith.science/api/pith-number/PPSCA35BVSEXYR272GX3PIW2RY/events.json","paper":"https://pith.science/paper/PPSCA35B"},"agent_actions":{"view_html":"https://pith.science/pith/PPSCA35BVSEXYR272GX3PIW2RY","download_json":"https://pith.science/pith/PPSCA35BVSEXYR272GX3PIW2RY.json","view_paper":"https://pith.science/paper/PPSCA35B","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1708.07801&json=true","fetch_graph":"https://pith.science/api/pith-number/PPSCA35BVSEXYR272GX3PIW2RY/graph.json","fetch_events":"https://pith.science/api/pith-number/PPSCA35BVSEXYR272GX3PIW2RY/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/PPSCA35BVSEXYR272GX3PIW2RY/action/timestamp_anchor","attest_storage":"https://pith.science/pith/PPSCA35BVSEXYR272GX3PIW2RY/action/storage_attestation","attest_author":"https://pith.science/pith/PPSCA35BVSEXYR272GX3PIW2RY/action/author_attestation","sign_citation":"https://pith.science/pith/PPSCA35BVSEXYR272GX3PIW2RY/action/citation_signature","submit_replication":"https://pith.science/pith/PPSCA35BVSEXYR272GX3PIW2RY/action/replication_record"}},"created_at":"2026-05-17T23:51:00.187414+00:00","updated_at":"2026-05-17T23:51:00.187414+00:00"}