{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:DBDR77U6KVV3SGYBY3COHZ5EDO","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":"64801d614f39ffd6d54f128a342d7c117bd9d8bd7e47a910415b41f1b0d499c7","cross_cats_sorted":["astro-ph.IM","eess.SP","stat.ML"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.LG","submitted_at":"2018-12-17T12:57:45Z","title_canon_sha256":"ed60869d0d6b502f948146606b599efa0f2b19632dcc24c7b44b7328a8ca3a5b"},"schema_version":"1.0","source":{"id":"1812.06737","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1812.06737","created_at":"2026-05-17T23:58:09Z"},{"alias_kind":"arxiv_version","alias_value":"1812.06737v1","created_at":"2026-05-17T23:58:09Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1812.06737","created_at":"2026-05-17T23:58:09Z"},{"alias_kind":"pith_short_12","alias_value":"DBDR77U6KVV3","created_at":"2026-05-18T12:32:19Z"},{"alias_kind":"pith_short_16","alias_value":"DBDR77U6KVV3SGYB","created_at":"2026-05-18T12:32:19Z"},{"alias_kind":"pith_short_8","alias_value":"DBDR77U6","created_at":"2026-05-18T12:32:19Z"}],"graph_snapshots":[{"event_id":"sha256:149bf8b566bb1ff19c77db927c6832e0d92c9864a63fdfbfee50eb5a88fbf6d9","target":"graph","created_at":"2026-05-17T23:58:09Z","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":"Sparse Blind Source Separation (sparse BSS) is a key method to analyze multichannel data in fields ranging from medical imaging to astrophysics. However, since it relies on seeking the solution of a non-convex penalized matrix factorization problem, its performances largely depend on the optimization strategy. In this context, Proximal Alternating Linearized Minimization (PALM) has become a standard algorithm which, despite its theoretical grounding, generally provides poor practical separation results. In this work, we propose a novel strategy that combines a heuristic approach with PALM. We ","authors_text":"Cecile Chenot, Christophe Kervazo, Jerome Bobin","cross_cats":["astro-ph.IM","eess.SP","stat.ML"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.LG","submitted_at":"2018-12-17T12:57:45Z","title":"Heuristics for Efficient Sparse Blind Source Separation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1812.06737","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":"sha256:536f1d4e913a95d5fdee59c6294835e4bcc7f757c7c901951025256e875ce257","target":"record","created_at":"2026-05-17T23:58:09Z","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":"64801d614f39ffd6d54f128a342d7c117bd9d8bd7e47a910415b41f1b0d499c7","cross_cats_sorted":["astro-ph.IM","eess.SP","stat.ML"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.LG","submitted_at":"2018-12-17T12:57:45Z","title_canon_sha256":"ed60869d0d6b502f948146606b599efa0f2b19632dcc24c7b44b7328a8ca3a5b"},"schema_version":"1.0","source":{"id":"1812.06737","kind":"arxiv","version":1}},"canonical_sha256":"18471ffe9e556bb91b01c6c4e3e7a41bad1001afb4db0fcfafb0e6d708677e3d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"18471ffe9e556bb91b01c6c4e3e7a41bad1001afb4db0fcfafb0e6d708677e3d","first_computed_at":"2026-05-17T23:58:09.415647Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:58:09.415647Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"6ZfJtGnZTNGb53PerQ1Sdeau1Y5rqVIafzOm09RYX60CSEVvW6UkQ6Sm9KMPXLCBUPMOAHJalMKGxCeujXPMDQ==","signature_status":"signed_v1","signed_at":"2026-05-17T23:58:09.416305Z","signed_message":"canonical_sha256_bytes"},"source_id":"1812.06737","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:536f1d4e913a95d5fdee59c6294835e4bcc7f757c7c901951025256e875ce257","sha256:149bf8b566bb1ff19c77db927c6832e0d92c9864a63fdfbfee50eb5a88fbf6d9"],"state_sha256":"ede9dbb0ae016bb4bca7f7e5f3678a3a807d644e6e69deab44211780514f4bb5"}