{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:F4JYBATAUIH6JNDXPNEFCGY24H","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":"962098def8547acb89d7a2c752987021d600c1d53b486e8481009efa20e3fc6b","cross_cats_sorted":["cs.LG","stat.ML"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SY","submitted_at":"2013-12-07T19:19:03Z","title_canon_sha256":"75e31504776fb0eba894db7b15eb2209dc99bcc2a1f4a2e633d8660d6fc963a2"},"schema_version":"1.0","source":{"id":"1312.2132","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1312.2132","created_at":"2026-05-18T03:05:17Z"},{"alias_kind":"arxiv_version","alias_value":"1312.2132v1","created_at":"2026-05-18T03:05:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1312.2132","created_at":"2026-05-18T03:05:17Z"},{"alias_kind":"pith_short_12","alias_value":"F4JYBATAUIH6","created_at":"2026-05-18T12:27:43Z"},{"alias_kind":"pith_short_16","alias_value":"F4JYBATAUIH6JNDX","created_at":"2026-05-18T12:27:43Z"},{"alias_kind":"pith_short_8","alias_value":"F4JYBATA","created_at":"2026-05-18T12:27:43Z"}],"graph_snapshots":[{"event_id":"sha256:849c513ac37dc90736c040fee9c302327e4668144fe8d19f8824a870ba3d39f7","target":"graph","created_at":"2026-05-18T03:05:17Z","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":"Subspace identification is a classical and very well studied problem in system identification. The problem was recently posed as a convex optimization problem via the nuclear norm relaxation. Inspired by robust PCA, we extend this framework to handle outliers. The proposed framework takes the form of a convex optimization problem with an objective that trades off fit, rank and sparsity. As in robust PCA, it can be problematic to find a suitable regularization parameter. We show how the space in which a suitable parameter should be sought can be limited to a bounded open set of the two dimensio","authors_text":"Dorsa Sadigh, Henrik Ohlsson, Sanjit A. Seshia, S. Shankar Sastry","cross_cats":["cs.LG","stat.ML"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SY","submitted_at":"2013-12-07T19:19:03Z","title":"Robust Subspace System Identification via Weighted Nuclear Norm Optimization"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1312.2132","kind":"arxiv","version":1},"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:f99796e626b2579c94e28ca6535fa2d9524462bbfab3b60b7ab71598a6eb7653","target":"record","created_at":"2026-05-18T03:05:17Z","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":"962098def8547acb89d7a2c752987021d600c1d53b486e8481009efa20e3fc6b","cross_cats_sorted":["cs.LG","stat.ML"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SY","submitted_at":"2013-12-07T19:19:03Z","title_canon_sha256":"75e31504776fb0eba894db7b15eb2209dc99bcc2a1f4a2e633d8660d6fc963a2"},"schema_version":"1.0","source":{"id":"1312.2132","kind":"arxiv","version":1}},"canonical_sha256":"2f13808260a20fe4b4777b48511b1ae1e39ff461eb0d8006d980409bf1f18408","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2f13808260a20fe4b4777b48511b1ae1e39ff461eb0d8006d980409bf1f18408","first_computed_at":"2026-05-18T03:05:17.172492Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:05:17.172492Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Vn3bi2YfJgNz0fEjaMmInmYb3vkmzRlb5V/bvKHcaDqnS9d1nG1MTyk6FXJbbQk7nQpEMFgtM2B+uAkTY3cnCA==","signature_status":"signed_v1","signed_at":"2026-05-18T03:05:17.172990Z","signed_message":"canonical_sha256_bytes"},"source_id":"1312.2132","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f99796e626b2579c94e28ca6535fa2d9524462bbfab3b60b7ab71598a6eb7653","sha256:849c513ac37dc90736c040fee9c302327e4668144fe8d19f8824a870ba3d39f7"],"state_sha256":"28513e49e0c4e9f134eb83be1e9a4bccfdf7cd779c1d5dc64a86e33f313aef4c"}