{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:MNC5A7WGDNDQNGUST7KE3NND6X","short_pith_number":"pith:MNC5A7WG","canonical_record":{"source":{"id":"1210.8296","kind":"arxiv","version":5},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SY","submitted_at":"2012-10-31T11:02:50Z","cross_cats_sorted":["math.OC"],"title_canon_sha256":"b026d5c52d60c231c1f25e289b3354d19a5fe7fc28c4c33f2e2baf58e0f3ac0a","abstract_canon_sha256":"913a21e0334886428e3aa36161ed16028c792a6ab8bb1f8fd632a03464bb411b"},"schema_version":"1.0"},"canonical_sha256":"6345d07ec61b47069a929fd44db5a3f5fca3c4364011152f536b0c0c0e999d7e","source":{"kind":"arxiv","id":"1210.8296","version":5},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1210.8296","created_at":"2026-05-18T00:44:20Z"},{"alias_kind":"arxiv_version","alias_value":"1210.8296v5","created_at":"2026-05-18T00:44:20Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1210.8296","created_at":"2026-05-18T00:44:20Z"},{"alias_kind":"pith_short_12","alias_value":"MNC5A7WGDNDQ","created_at":"2026-05-18T12:27:14Z"},{"alias_kind":"pith_short_16","alias_value":"MNC5A7WGDNDQNGUS","created_at":"2026-05-18T12:27:14Z"},{"alias_kind":"pith_short_8","alias_value":"MNC5A7WG","created_at":"2026-05-18T12:27:14Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:MNC5A7WGDNDQNGUST7KE3NND6X","target":"record","payload":{"canonical_record":{"source":{"id":"1210.8296","kind":"arxiv","version":5},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SY","submitted_at":"2012-10-31T11:02:50Z","cross_cats_sorted":["math.OC"],"title_canon_sha256":"b026d5c52d60c231c1f25e289b3354d19a5fe7fc28c4c33f2e2baf58e0f3ac0a","abstract_canon_sha256":"913a21e0334886428e3aa36161ed16028c792a6ab8bb1f8fd632a03464bb411b"},"schema_version":"1.0"},"canonical_sha256":"6345d07ec61b47069a929fd44db5a3f5fca3c4364011152f536b0c0c0e999d7e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:44:20.003433Z","signature_b64":"P5Lmb8TSbfKkwC4zuGHmT+oNx/DIapQEXnZlfVXF2h4Fkh78ZGn1vK2KJFtI0cSh6EBHToUCgUSSXXU1cxPJBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6345d07ec61b47069a929fd44db5a3f5fca3c4364011152f536b0c0c0e999d7e","last_reissued_at":"2026-05-18T00:44:20.002983Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:44:20.002983Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1210.8296","source_version":5,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:44:20Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"j7wyHg08+ETp/vpbZnpCL2QO7WkiIItyIqs3UBpFcaoFxThU+pHaJkAy0i7KfqzQAAt9HtTzVj56whqampeZAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-11T06:04:53.014508Z"},"content_sha256":"623d5e85d01e0a7438b486961cba022358acff165bf27d15aca5c31b8cd7f328","schema_version":"1.0","event_id":"sha256:623d5e85d01e0a7438b486961cba022358acff165bf27d15aca5c31b8cd7f328"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:MNC5A7WGDNDQNGUST7KE3NND6X","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Parameter Estimation of Switched Hammerstein Systems","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["math.OC"],"primary_cat":"cs.SY","authors_text":"Han-Fu Chen, Jing Zhang","submitted_at":"2012-10-31T11:02:50Z","abstract_excerpt":"This paper deals with the parameter estimation problem of the Single-Input-Single-Output (SISO) switched Hammerstein system. Suppose that the switching law is arbitrary but can be observed online. All subsystems are parameterized and the Recursive Least Squares (RLS) algorithm is applied to estimate their parameters. To overcome the difficulty caused by coupling of data from different subsystems, the concept \"intrinsic switch\" is introduced. Two cases are considered: i) The input is taken to be a sequence of independent identically distributed (i.i.d.) random variables when identification is t"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1210.8296","kind":"arxiv","version":5},"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":"2026-05-18T00:44:20Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+Exbuu6yZC7xwfVdZmh+N4OBrSop0m/1wcgz787csP4mC0qW6+xEd5deYqlIL8pNwzjX/gLyvLhSUP+Xxpj8CA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-11T06:04:53.015213Z"},"content_sha256":"25785edda9d97f2ac5afec02849daba6c85c08a3d0ed128d7f0ab26530dfd4f0","schema_version":"1.0","event_id":"sha256:25785edda9d97f2ac5afec02849daba6c85c08a3d0ed128d7f0ab26530dfd4f0"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/MNC5A7WGDNDQNGUST7KE3NND6X/bundle.json","state_url":"https://pith.science/pith/MNC5A7WGDNDQNGUST7KE3NND6X/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/MNC5A7WGDNDQNGUST7KE3NND6X/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":"2026-06-11T06:04:53Z","links":{"resolver":"https://pith.science/pith/MNC5A7WGDNDQNGUST7KE3NND6X","bundle":"https://pith.science/pith/MNC5A7WGDNDQNGUST7KE3NND6X/bundle.json","state":"https://pith.science/pith/MNC5A7WGDNDQNGUST7KE3NND6X/state.json","well_known_bundle":"https://pith.science/.well-known/pith/MNC5A7WGDNDQNGUST7KE3NND6X/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:MNC5A7WGDNDQNGUST7KE3NND6X","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":"913a21e0334886428e3aa36161ed16028c792a6ab8bb1f8fd632a03464bb411b","cross_cats_sorted":["math.OC"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SY","submitted_at":"2012-10-31T11:02:50Z","title_canon_sha256":"b026d5c52d60c231c1f25e289b3354d19a5fe7fc28c4c33f2e2baf58e0f3ac0a"},"schema_version":"1.0","source":{"id":"1210.8296","kind":"arxiv","version":5}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1210.8296","created_at":"2026-05-18T00:44:20Z"},{"alias_kind":"arxiv_version","alias_value":"1210.8296v5","created_at":"2026-05-18T00:44:20Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1210.8296","created_at":"2026-05-18T00:44:20Z"},{"alias_kind":"pith_short_12","alias_value":"MNC5A7WGDNDQ","created_at":"2026-05-18T12:27:14Z"},{"alias_kind":"pith_short_16","alias_value":"MNC5A7WGDNDQNGUS","created_at":"2026-05-18T12:27:14Z"},{"alias_kind":"pith_short_8","alias_value":"MNC5A7WG","created_at":"2026-05-18T12:27:14Z"}],"graph_snapshots":[{"event_id":"sha256:25785edda9d97f2ac5afec02849daba6c85c08a3d0ed128d7f0ab26530dfd4f0","target":"graph","created_at":"2026-05-18T00:44:20Z","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":"This paper deals with the parameter estimation problem of the Single-Input-Single-Output (SISO) switched Hammerstein system. Suppose that the switching law is arbitrary but can be observed online. All subsystems are parameterized and the Recursive Least Squares (RLS) algorithm is applied to estimate their parameters. To overcome the difficulty caused by coupling of data from different subsystems, the concept \"intrinsic switch\" is introduced. Two cases are considered: i) The input is taken to be a sequence of independent identically distributed (i.i.d.) random variables when identification is t","authors_text":"Han-Fu Chen, Jing Zhang","cross_cats":["math.OC"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SY","submitted_at":"2012-10-31T11:02:50Z","title":"Parameter Estimation of Switched Hammerstein Systems"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1210.8296","kind":"arxiv","version":5},"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":"sha256:623d5e85d01e0a7438b486961cba022358acff165bf27d15aca5c31b8cd7f328","target":"record","created_at":"2026-05-18T00:44:20Z","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":"913a21e0334886428e3aa36161ed16028c792a6ab8bb1f8fd632a03464bb411b","cross_cats_sorted":["math.OC"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SY","submitted_at":"2012-10-31T11:02:50Z","title_canon_sha256":"b026d5c52d60c231c1f25e289b3354d19a5fe7fc28c4c33f2e2baf58e0f3ac0a"},"schema_version":"1.0","source":{"id":"1210.8296","kind":"arxiv","version":5}},"canonical_sha256":"6345d07ec61b47069a929fd44db5a3f5fca3c4364011152f536b0c0c0e999d7e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6345d07ec61b47069a929fd44db5a3f5fca3c4364011152f536b0c0c0e999d7e","first_computed_at":"2026-05-18T00:44:20.002983Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:44:20.002983Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"P5Lmb8TSbfKkwC4zuGHmT+oNx/DIapQEXnZlfVXF2h4Fkh78ZGn1vK2KJFtI0cSh6EBHToUCgUSSXXU1cxPJBA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:44:20.003433Z","signed_message":"canonical_sha256_bytes"},"source_id":"1210.8296","source_kind":"arxiv","source_version":5}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:623d5e85d01e0a7438b486961cba022358acff165bf27d15aca5c31b8cd7f328","sha256:25785edda9d97f2ac5afec02849daba6c85c08a3d0ed128d7f0ab26530dfd4f0"],"state_sha256":"c4b9adf7aaf9597558cf283aa19d07561a311c526f73302dc6fab5bdf450b7b4"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hfefEKBU68yHtzOT7j7taYz/5HmudzPfVN7I6kPx8T4tojtMDPXLrQdG+toU5mPfgRyCaDVoCcqClY3H6pMTBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-11T06:04:53.019076Z","bundle_sha256":"95a675c470df65f0d7a33dba9e8a0725423dc52bd806533cbe5cf9567c5d474f"}}