{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:IZ35E4IOMMSJ3O2QQ62MFRL6W5","short_pith_number":"pith:IZ35E4IO","canonical_record":{"source":{"id":"1503.07336","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.OC","submitted_at":"2015-03-25T11:17:50Z","cross_cats_sorted":[],"title_canon_sha256":"a2425fd1a20b203514b9eec950707943c13168d13fe07630d67ddc70b5342763","abstract_canon_sha256":"a300d3b470ad8962818781bad0eb4f3c3187941703293195400efb7ca7f5fab5"},"schema_version":"1.0"},"canonical_sha256":"4677d2710e63249dbb5087b4c2c57eb764ac23cd6a4295f0e3b4ddec0d7e768c","source":{"kind":"arxiv","id":"1503.07336","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1503.07336","created_at":"2026-05-18T01:32:00Z"},{"alias_kind":"arxiv_version","alias_value":"1503.07336v2","created_at":"2026-05-18T01:32:00Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1503.07336","created_at":"2026-05-18T01:32:00Z"},{"alias_kind":"pith_short_12","alias_value":"IZ35E4IOMMSJ","created_at":"2026-05-18T12:29:27Z"},{"alias_kind":"pith_short_16","alias_value":"IZ35E4IOMMSJ3O2Q","created_at":"2026-05-18T12:29:27Z"},{"alias_kind":"pith_short_8","alias_value":"IZ35E4IO","created_at":"2026-05-18T12:29:27Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:IZ35E4IOMMSJ3O2QQ62MFRL6W5","target":"record","payload":{"canonical_record":{"source":{"id":"1503.07336","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.OC","submitted_at":"2015-03-25T11:17:50Z","cross_cats_sorted":[],"title_canon_sha256":"a2425fd1a20b203514b9eec950707943c13168d13fe07630d67ddc70b5342763","abstract_canon_sha256":"a300d3b470ad8962818781bad0eb4f3c3187941703293195400efb7ca7f5fab5"},"schema_version":"1.0"},"canonical_sha256":"4677d2710e63249dbb5087b4c2c57eb764ac23cd6a4295f0e3b4ddec0d7e768c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:32:00.712596Z","signature_b64":"OJWqA4eKEhOMtBO523OKXtSbN9dAzftP3/ESNupSw725KRNrnbLIO3qbA6APGqxOdji25cEE74z+MPy1pjdtAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"4677d2710e63249dbb5087b4c2c57eb764ac23cd6a4295f0e3b4ddec0d7e768c","last_reissued_at":"2026-05-18T01:32:00.711737Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:32:00.711737Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1503.07336","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":"2026-05-18T01:32:00Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"tdToZ9Au0Jb7JNZo2JYvcFFd2KvuANrM05dz4inu2f8SsmLL2rqc9ROXEfT9/0LpFl9J8zNXi4Tsv+pGiz5PDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T12:53:50.337395Z"},"content_sha256":"305c4d975adaaf7d7b5915ffdabc31a355c68dc6467b7f1491197d007027d047","schema_version":"1.0","event_id":"sha256:305c4d975adaaf7d7b5915ffdabc31a355c68dc6467b7f1491197d007027d047"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:IZ35E4IOMMSJ3O2QQ62MFRL6W5","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"On the convergence of a Risk Sensitive like Filter","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"math.OC","authors_text":"Bernard C. Levy, Mattia Zorzi","submitted_at":"2015-03-25T11:17:50Z","abstract_excerpt":"In this paper, we analyze the convergence of a risk sensitive like filter where the risk sensitivity parameter is time varying. Such filter has a Kalman like structure and its gain matrix is updated according to a Riccati like iteration. We show that the iteration converges to a fixed point by using the contraction analysis."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1503.07336","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":""},"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":"2026-05-18T01:32:00Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"P6tDx56nwt1aFbsjz91j9+zHdlFYKLp/vAcwqt2mQHwwuPKYcSSjyODnb28MP0LAUWWZBmADM/w/u4Xs4JMxAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T12:53:50.338048Z"},"content_sha256":"56fa2a331b17b1b7d0ff7ae7ebf01e63abee075d296c29c6e9133659b4d2b384","schema_version":"1.0","event_id":"sha256:56fa2a331b17b1b7d0ff7ae7ebf01e63abee075d296c29c6e9133659b4d2b384"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/IZ35E4IOMMSJ3O2QQ62MFRL6W5/bundle.json","state_url":"https://pith.science/pith/IZ35E4IOMMSJ3O2QQ62MFRL6W5/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/IZ35E4IOMMSJ3O2QQ62MFRL6W5/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":"2026-05-26T12:53:50Z","links":{"resolver":"https://pith.science/pith/IZ35E4IOMMSJ3O2QQ62MFRL6W5","bundle":"https://pith.science/pith/IZ35E4IOMMSJ3O2QQ62MFRL6W5/bundle.json","state":"https://pith.science/pith/IZ35E4IOMMSJ3O2QQ62MFRL6W5/state.json","well_known_bundle":"https://pith.science/.well-known/pith/IZ35E4IOMMSJ3O2QQ62MFRL6W5/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:IZ35E4IOMMSJ3O2QQ62MFRL6W5","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":"a300d3b470ad8962818781bad0eb4f3c3187941703293195400efb7ca7f5fab5","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.OC","submitted_at":"2015-03-25T11:17:50Z","title_canon_sha256":"a2425fd1a20b203514b9eec950707943c13168d13fe07630d67ddc70b5342763"},"schema_version":"1.0","source":{"id":"1503.07336","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1503.07336","created_at":"2026-05-18T01:32:00Z"},{"alias_kind":"arxiv_version","alias_value":"1503.07336v2","created_at":"2026-05-18T01:32:00Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1503.07336","created_at":"2026-05-18T01:32:00Z"},{"alias_kind":"pith_short_12","alias_value":"IZ35E4IOMMSJ","created_at":"2026-05-18T12:29:27Z"},{"alias_kind":"pith_short_16","alias_value":"IZ35E4IOMMSJ3O2Q","created_at":"2026-05-18T12:29:27Z"},{"alias_kind":"pith_short_8","alias_value":"IZ35E4IO","created_at":"2026-05-18T12:29:27Z"}],"graph_snapshots":[{"event_id":"sha256:56fa2a331b17b1b7d0ff7ae7ebf01e63abee075d296c29c6e9133659b4d2b384","target":"graph","created_at":"2026-05-18T01:32:00Z","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":"In this paper, we analyze the convergence of a risk sensitive like filter where the risk sensitivity parameter is time varying. Such filter has a Kalman like structure and its gain matrix is updated according to a Riccati like iteration. We show that the iteration converges to a fixed point by using the contraction analysis.","authors_text":"Bernard C. Levy, Mattia Zorzi","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.OC","submitted_at":"2015-03-25T11:17:50Z","title":"On the convergence of a Risk Sensitive like Filter"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1503.07336","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":"sha256:305c4d975adaaf7d7b5915ffdabc31a355c68dc6467b7f1491197d007027d047","target":"record","created_at":"2026-05-18T01:32:00Z","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":"a300d3b470ad8962818781bad0eb4f3c3187941703293195400efb7ca7f5fab5","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.OC","submitted_at":"2015-03-25T11:17:50Z","title_canon_sha256":"a2425fd1a20b203514b9eec950707943c13168d13fe07630d67ddc70b5342763"},"schema_version":"1.0","source":{"id":"1503.07336","kind":"arxiv","version":2}},"canonical_sha256":"4677d2710e63249dbb5087b4c2c57eb764ac23cd6a4295f0e3b4ddec0d7e768c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4677d2710e63249dbb5087b4c2c57eb764ac23cd6a4295f0e3b4ddec0d7e768c","first_computed_at":"2026-05-18T01:32:00.711737Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:32:00.711737Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"OJWqA4eKEhOMtBO523OKXtSbN9dAzftP3/ESNupSw725KRNrnbLIO3qbA6APGqxOdji25cEE74z+MPy1pjdtAw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:32:00.712596Z","signed_message":"canonical_sha256_bytes"},"source_id":"1503.07336","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:305c4d975adaaf7d7b5915ffdabc31a355c68dc6467b7f1491197d007027d047","sha256:56fa2a331b17b1b7d0ff7ae7ebf01e63abee075d296c29c6e9133659b4d2b384"],"state_sha256":"3f8cc943b30c10bd3a4738432d4babb04454ad9f8053d583c6db76135b5c3175"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"r4nDH9UVPGBaRKhM1cDq6uSWG6VSZovYcp4x9S1dT6JcFdGJenAp95jEpTEtJ/sM1bjxt8PcahsGVMYEi08OBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T12:53:50.341446Z","bundle_sha256":"a2b0148e1c396554a27f26655e68a870265e5133cd2d1f51aae56eb6944ee01d"}}