{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:BHJXOOIDXDV57X3VYRAHQKKNM3","short_pith_number":"pith:BHJXOOID","canonical_record":{"source":{"id":"2607.03159","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"eess.SY","submitted_at":"2026-07-03T09:58:51Z","cross_cats_sorted":["cs.SY"],"title_canon_sha256":"ccabc6cb0f28456e55bc28fdf31cda22b133583ac19226ea33a0aa0f167589a2","abstract_canon_sha256":"2d349afeee6efee2f61dffd6fa9f3be3fad05a1cc3747fa90f511a822944bf6b"},"schema_version":"1.0"},"canonical_sha256":"09d3773903b8ebdfdf75c44078294d66c88b9d4b33efbfa486defca8457afeaa","source":{"kind":"arxiv","id":"2607.03159","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2607.03159","created_at":"2026-07-07T01:16:45Z"},{"alias_kind":"arxiv_version","alias_value":"2607.03159v1","created_at":"2026-07-07T01:16:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2607.03159","created_at":"2026-07-07T01:16:45Z"},{"alias_kind":"pith_short_12","alias_value":"BHJXOOIDXDV5","created_at":"2026-07-07T01:16:45Z"},{"alias_kind":"pith_short_16","alias_value":"BHJXOOIDXDV57X3V","created_at":"2026-07-07T01:16:45Z"},{"alias_kind":"pith_short_8","alias_value":"BHJXOOID","created_at":"2026-07-07T01:16:45Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:BHJXOOIDXDV57X3VYRAHQKKNM3","target":"record","payload":{"canonical_record":{"source":{"id":"2607.03159","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"eess.SY","submitted_at":"2026-07-03T09:58:51Z","cross_cats_sorted":["cs.SY"],"title_canon_sha256":"ccabc6cb0f28456e55bc28fdf31cda22b133583ac19226ea33a0aa0f167589a2","abstract_canon_sha256":"2d349afeee6efee2f61dffd6fa9f3be3fad05a1cc3747fa90f511a822944bf6b"},"schema_version":"1.0"},"canonical_sha256":"09d3773903b8ebdfdf75c44078294d66c88b9d4b33efbfa486defca8457afeaa","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-07T01:16:45.212493Z","signature_b64":"SLz1CzDgb260bUMIaQSY1Hu6bayDp8bedIUe2+D9qFWRNGwBWpCMlNpJ8YDx1AOati+/yljuBnpfLuiC9n8GAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"09d3773903b8ebdfdf75c44078294d66c88b9d4b33efbfa486defca8457afeaa","last_reissued_at":"2026-07-07T01:16:45.211954Z","signature_status":"signed_v1","first_computed_at":"2026-07-07T01:16:45.211954Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2607.03159","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-07T01:16:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"MPmJ8zF2qmN5SWGZbJDmNaRnfBxCcw/CbdEg7MLrrRq5rLTVmejeVpc5RtPS3CvDsqsVrX16LcVEqPliJuz0Cw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-08T07:49:19.146560Z"},"content_sha256":"065adf60970f816c2e5cbad2176fef6c9f2b4943e8b7258f952e1e4606d0ee91","schema_version":"1.0","event_id":"sha256:065adf60970f816c2e5cbad2176fef6c9f2b4943e8b7258f952e1e4606d0ee91"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:BHJXOOIDXDV57X3VYRAHQKKNM3","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Sparse State Feedback Control for Industrial Applications","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","headline":"","cross_cats":["cs.SY"],"primary_cat":"eess.SY","authors_text":"Alba Gurpegui Ram\\'on, Anders Rantzer, Frida Norlund, Kristian Soltesz","submitted_at":"2026-07-03T09:58:51Z","abstract_excerpt":"We present an optimization-based methodology for designing sparse state-feedback controllers for industrial applications that are suited for linear control, and demonstrate the framework by designing a level controller for an industrial rougher flotation bank at the Aitik mine. In contrast to the dense linear-quadratic (LQ) controller gains currently operating at the concentrator, our approach enforces a sparsity pattern that is consistent with the interaction structure of the flotation bank and accounts for the worst-case expected inflow disturbances during tuning, while optimizing controller"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.03159","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2607.03159/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-07T01:16:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KkYe080vYnMNroFMIjmotnNLJR3/QQaGm82HWo7+tYOXIQPJWSaFpGN8AQOCDSi1QeWdc+Lso5XwjWRWfDUJBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-08T07:49:19.147279Z"},"content_sha256":"f287aad17cc22b45f098a85b3909a59259f62a4ac2510f3b7de28740dfe2942b","schema_version":"1.0","event_id":"sha256:f287aad17cc22b45f098a85b3909a59259f62a4ac2510f3b7de28740dfe2942b"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/BHJXOOIDXDV57X3VYRAHQKKNM3/bundle.json","state_url":"https://pith.science/pith/BHJXOOIDXDV57X3VYRAHQKKNM3/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/BHJXOOIDXDV57X3VYRAHQKKNM3/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":"2026-07-08T07:49:19Z","links":{"resolver":"https://pith.science/pith/BHJXOOIDXDV57X3VYRAHQKKNM3","bundle":"https://pith.science/pith/BHJXOOIDXDV57X3VYRAHQKKNM3/bundle.json","state":"https://pith.science/pith/BHJXOOIDXDV57X3VYRAHQKKNM3/state.json","well_known_bundle":"https://pith.science/.well-known/pith/BHJXOOIDXDV57X3VYRAHQKKNM3/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:BHJXOOIDXDV57X3VYRAHQKKNM3","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":"2d349afeee6efee2f61dffd6fa9f3be3fad05a1cc3747fa90f511a822944bf6b","cross_cats_sorted":["cs.SY"],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"eess.SY","submitted_at":"2026-07-03T09:58:51Z","title_canon_sha256":"ccabc6cb0f28456e55bc28fdf31cda22b133583ac19226ea33a0aa0f167589a2"},"schema_version":"1.0","source":{"id":"2607.03159","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2607.03159","created_at":"2026-07-07T01:16:45Z"},{"alias_kind":"arxiv_version","alias_value":"2607.03159v1","created_at":"2026-07-07T01:16:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2607.03159","created_at":"2026-07-07T01:16:45Z"},{"alias_kind":"pith_short_12","alias_value":"BHJXOOIDXDV5","created_at":"2026-07-07T01:16:45Z"},{"alias_kind":"pith_short_16","alias_value":"BHJXOOIDXDV57X3V","created_at":"2026-07-07T01:16:45Z"},{"alias_kind":"pith_short_8","alias_value":"BHJXOOID","created_at":"2026-07-07T01:16:45Z"}],"graph_snapshots":[{"event_id":"sha256:f287aad17cc22b45f098a85b3909a59259f62a4ac2510f3b7de28740dfe2942b","target":"graph","created_at":"2026-07-07T01:16:45Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2607.03159/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We present an optimization-based methodology for designing sparse state-feedback controllers for industrial applications that are suited for linear control, and demonstrate the framework by designing a level controller for an industrial rougher flotation bank at the Aitik mine. In contrast to the dense linear-quadratic (LQ) controller gains currently operating at the concentrator, our approach enforces a sparsity pattern that is consistent with the interaction structure of the flotation bank and accounts for the worst-case expected inflow disturbances during tuning, while optimizing controller","authors_text":"Alba Gurpegui Ram\\'on, Anders Rantzer, Frida Norlund, Kristian Soltesz","cross_cats":["cs.SY"],"headline":"","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"eess.SY","submitted_at":"2026-07-03T09:58:51Z","title":"Sparse State Feedback Control for Industrial Applications"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.03159","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":"sha256:065adf60970f816c2e5cbad2176fef6c9f2b4943e8b7258f952e1e4606d0ee91","target":"record","created_at":"2026-07-07T01:16:45Z","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":"2d349afeee6efee2f61dffd6fa9f3be3fad05a1cc3747fa90f511a822944bf6b","cross_cats_sorted":["cs.SY"],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"eess.SY","submitted_at":"2026-07-03T09:58:51Z","title_canon_sha256":"ccabc6cb0f28456e55bc28fdf31cda22b133583ac19226ea33a0aa0f167589a2"},"schema_version":"1.0","source":{"id":"2607.03159","kind":"arxiv","version":1}},"canonical_sha256":"09d3773903b8ebdfdf75c44078294d66c88b9d4b33efbfa486defca8457afeaa","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"09d3773903b8ebdfdf75c44078294d66c88b9d4b33efbfa486defca8457afeaa","first_computed_at":"2026-07-07T01:16:45.211954Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-07T01:16:45.211954Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"SLz1CzDgb260bUMIaQSY1Hu6bayDp8bedIUe2+D9qFWRNGwBWpCMlNpJ8YDx1AOati+/yljuBnpfLuiC9n8GAA==","signature_status":"signed_v1","signed_at":"2026-07-07T01:16:45.212493Z","signed_message":"canonical_sha256_bytes"},"source_id":"2607.03159","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:065adf60970f816c2e5cbad2176fef6c9f2b4943e8b7258f952e1e4606d0ee91","sha256:f287aad17cc22b45f098a85b3909a59259f62a4ac2510f3b7de28740dfe2942b"],"state_sha256":"8ea30bc641fe40cc6c8b623ec4898bfd8333abc521b8df51fda94a8c1d68a294"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"RF/s68XabmQt9rkKC0osKNJ68374UGQr/knz3kuXWXZLfsmtHuTnkgYGSwKWRR8IjhZJqLTgV5ssmZT9pUmpDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-08T07:49:19.151767Z","bundle_sha256":"ad2f8183ce129979bcf6d452d148e0da4ed5854d749f206fafd48ea3763fcfd9"}}