{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:URCGL2W2GBQ4PQAFKO5WLE5SBA","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":"a569c67cb51d1dc8124ad3fdb4bfcf215da7f573f51f41cf87a956b651e9b452","cross_cats_sorted":["cs.HC","cs.LG","q-bio.NC"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2023-03-07T11:19:18Z","title_canon_sha256":"44e789584510f6ba5760ec4ae97f7b63f4028b807b6f3b6e9fb46f81c524fbf5"},"schema_version":"1.0","source":{"id":"2303.06019","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2303.06019","created_at":"2026-07-05T05:49:59Z"},{"alias_kind":"arxiv_version","alias_value":"2303.06019v1","created_at":"2026-07-05T05:49:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2303.06019","created_at":"2026-07-05T05:49:59Z"},{"alias_kind":"pith_short_12","alias_value":"URCGL2W2GBQ4","created_at":"2026-07-05T05:49:59Z"},{"alias_kind":"pith_short_16","alias_value":"URCGL2W2GBQ4PQAF","created_at":"2026-07-05T05:49:59Z"},{"alias_kind":"pith_short_8","alias_value":"URCGL2W2","created_at":"2026-07-05T05:49:59Z"}],"graph_snapshots":[{"event_id":"sha256:25d3c31ac1ad7b3e85adf38dfe3ba4b538312e7ff97ff957f25d5b39b1ab2002","target":"graph","created_at":"2026-07-05T05:49:59Z","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/2303.06019/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The common spatial pattern (CSP) approach is known as one of the most popular spatial filtering techniques for EEG classification in motor imagery (MI) based brain-computer interfaces (BCIs). However, it still suffers some drawbacks such as sensitivity to noise, non-stationarity, and limitation to binary classification.Therefore, we propose a novel spatial filtering framework called scaCSP based on the scatter matrices of spatial covariances of EEG signals, which works generally in both binary and multi-class problems whereas CSP can be cast into our framework as a special case when only the r","authors_text":"Daniel Baumgarten, Jens Haueisen, Jinlong Dong, Johannes Vorwerk, Milana Komosar","cross_cats":["cs.HC","cs.LG","q-bio.NC"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2023-03-07T11:19:18Z","title":"Scatter-based common spatial patterns -- a unified spatial filtering framework"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2303.06019","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":"sha256:798135af12cfa9ebcc878c7e9708912ec68ec3d3bcec387b7585689a6ed94172","target":"record","created_at":"2026-07-05T05:49:59Z","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":"a569c67cb51d1dc8124ad3fdb4bfcf215da7f573f51f41cf87a956b651e9b452","cross_cats_sorted":["cs.HC","cs.LG","q-bio.NC"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2023-03-07T11:19:18Z","title_canon_sha256":"44e789584510f6ba5760ec4ae97f7b63f4028b807b6f3b6e9fb46f81c524fbf5"},"schema_version":"1.0","source":{"id":"2303.06019","kind":"arxiv","version":1}},"canonical_sha256":"a44465eada3061c7c00553bb6593b2082d4f7d489fe07770504c557a35623031","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a44465eada3061c7c00553bb6593b2082d4f7d489fe07770504c557a35623031","first_computed_at":"2026-07-05T05:49:59.885886Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T05:49:59.885886Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"R9mF4tYvFM3DytFz6P3/xIrP5TZRlqphUiyXMLlvrqcyEstpMn0FtMhLpzfDmx6T+3L0eNUasRwc91GqaDQZCg==","signature_status":"signed_v1","signed_at":"2026-07-05T05:49:59.886391Z","signed_message":"canonical_sha256_bytes"},"source_id":"2303.06019","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:798135af12cfa9ebcc878c7e9708912ec68ec3d3bcec387b7585689a6ed94172","sha256:25d3c31ac1ad7b3e85adf38dfe3ba4b538312e7ff97ff957f25d5b39b1ab2002"],"state_sha256":"22308e0d8ba205ef89b04d4dea20c9b5b0436240223cd99955ca5499baa033dd"}