{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2017:G6Z5LGHOW4QGQWZFCHBUPA2BLY","short_pith_number":"pith:G6Z5LGHO","schema_version":"1.0","canonical_sha256":"37b3d598eeb720685b2511c34783415e11f8cee3e297226a18b746aa1e23cd23","source":{"kind":"arxiv","id":"1704.02635","version":1},"attestation_state":"computed","paper":{"title":"Subspace Identification with Multiple Data Records: unlocking the archive","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"cs.SY","authors_text":"Chad M. Holcomb, Robert R. Bitmead","submitted_at":"2017-04-09T17:51:01Z","abstract_excerpt":"We develop an approach to subspace system identification using multiple data records and present a simple rank-based test for the adequacy of these data for fitting the unique linear, noise-free, dynamic model of prescribed state-vector, input-vector and output-vector dimensions. The approach is motivated by the prospect of sorting through archives of operational data and extracting a sequence of not-necessarily-contiguous data records individually insufficient for providing identifiability but collectively making this possible. The test of identifiability then becomes the sorting criterion fo"},"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":"1704.02635","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.SY","submitted_at":"2017-04-09T17:51:01Z","cross_cats_sorted":[],"title_canon_sha256":"d9d4352c175a698ef92ad103066f3aa15ca7d2cf1ff5f0400f42314fe701d9aa","abstract_canon_sha256":"cdf5b631fd5c874bf01e8810b10aa76924df5e3098b96db55a71d1a2a774de33"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:46:44.863576Z","signature_b64":"OvaRjQDNU0s2JdXa4+ICLnEh76LuX8iXrqjqQiSbEsOyMuinXTEo48kHuOuujRvFR+CkGFsnA1ZDKymrSTK8CQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"37b3d598eeb720685b2511c34783415e11f8cee3e297226a18b746aa1e23cd23","last_reissued_at":"2026-05-18T00:46:44.863025Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:46:44.863025Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Subspace Identification with Multiple Data Records: unlocking the archive","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"cs.SY","authors_text":"Chad M. Holcomb, Robert R. Bitmead","submitted_at":"2017-04-09T17:51:01Z","abstract_excerpt":"We develop an approach to subspace system identification using multiple data records and present a simple rank-based test for the adequacy of these data for fitting the unique linear, noise-free, dynamic model of prescribed state-vector, input-vector and output-vector dimensions. The approach is motivated by the prospect of sorting through archives of operational data and extracting a sequence of not-necessarily-contiguous data records individually insufficient for providing identifiability but collectively making this possible. The test of identifiability then becomes the sorting criterion fo"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1704.02635","kind":"arxiv","version":1},"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":"1704.02635","created_at":"2026-05-18T00:46:44.863115+00:00"},{"alias_kind":"arxiv_version","alias_value":"1704.02635v1","created_at":"2026-05-18T00:46:44.863115+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1704.02635","created_at":"2026-05-18T00:46:44.863115+00:00"},{"alias_kind":"pith_short_12","alias_value":"G6Z5LGHOW4QG","created_at":"2026-05-18T12:31:15.632608+00:00"},{"alias_kind":"pith_short_16","alias_value":"G6Z5LGHOW4QGQWZF","created_at":"2026-05-18T12:31:15.632608+00:00"},{"alias_kind":"pith_short_8","alias_value":"G6Z5LGHO","created_at":"2026-05-18T12:31:15.632608+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":1,"internal_anchor_count":1,"sample":[{"citing_arxiv_id":"2603.28965","citing_title":"Koopman Operator Framework for Modeling and Control of Off-Road Vehicle on Deformable Terrain","ref_index":30,"is_internal_anchor":true}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/G6Z5LGHOW4QGQWZFCHBUPA2BLY","json":"https://pith.science/pith/G6Z5LGHOW4QGQWZFCHBUPA2BLY.json","graph_json":"https://pith.science/api/pith-number/G6Z5LGHOW4QGQWZFCHBUPA2BLY/graph.json","events_json":"https://pith.science/api/pith-number/G6Z5LGHOW4QGQWZFCHBUPA2BLY/events.json","paper":"https://pith.science/paper/G6Z5LGHO"},"agent_actions":{"view_html":"https://pith.science/pith/G6Z5LGHOW4QGQWZFCHBUPA2BLY","download_json":"https://pith.science/pith/G6Z5LGHOW4QGQWZFCHBUPA2BLY.json","view_paper":"https://pith.science/paper/G6Z5LGHO","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1704.02635&json=true","fetch_graph":"https://pith.science/api/pith-number/G6Z5LGHOW4QGQWZFCHBUPA2BLY/graph.json","fetch_events":"https://pith.science/api/pith-number/G6Z5LGHOW4QGQWZFCHBUPA2BLY/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/G6Z5LGHOW4QGQWZFCHBUPA2BLY/action/timestamp_anchor","attest_storage":"https://pith.science/pith/G6Z5LGHOW4QGQWZFCHBUPA2BLY/action/storage_attestation","attest_author":"https://pith.science/pith/G6Z5LGHOW4QGQWZFCHBUPA2BLY/action/author_attestation","sign_citation":"https://pith.science/pith/G6Z5LGHOW4QGQWZFCHBUPA2BLY/action/citation_signature","submit_replication":"https://pith.science/pith/G6Z5LGHOW4QGQWZFCHBUPA2BLY/action/replication_record"}},"created_at":"2026-05-18T00:46:44.863115+00:00","updated_at":"2026-05-18T00:46:44.863115+00:00"}