{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:BQEWFCFDJBZXRENEXNNVHBQWFA","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":"65b6c8a06c830413e2f09728bc12d3fed86b28e40c5ad20bea9cb40295b7b3f0","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2018-08-01T04:45:31Z","title_canon_sha256":"d9724be2f1e732ad2ea6b95ecc6a4fb12f6a9297db16dc3941c3b71b94aa6697"},"schema_version":"1.0","source":{"id":"1808.00166","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1808.00166","created_at":"2026-05-17T23:45:37Z"},{"alias_kind":"arxiv_version","alias_value":"1808.00166v1","created_at":"2026-05-17T23:45:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1808.00166","created_at":"2026-05-17T23:45:37Z"},{"alias_kind":"pith_short_12","alias_value":"BQEWFCFDJBZX","created_at":"2026-05-18T12:32:16Z"},{"alias_kind":"pith_short_16","alias_value":"BQEWFCFDJBZXRENE","created_at":"2026-05-18T12:32:16Z"},{"alias_kind":"pith_short_8","alias_value":"BQEWFCFD","created_at":"2026-05-18T12:32:16Z"}],"graph_snapshots":[{"event_id":"sha256:f09280d2b2991ebb385cf606f26d9d9d14de150d3350f64519a2abfec265d2d1","target":"graph","created_at":"2026-05-17T23:45:37Z","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":"We introduce a novel multichannel blind deconvolution (BD) method that extracts sparse and front-loaded impulse responses from the channel outputs, i.e., their convolutions with a single arbitrary source. A crucial feature of this formulation is that it doesn't encode support restrictions on the unknowns, unlike most prior work on BD. The indeterminacy inherent to BD, which is difficult to resolve with a traditional L1 penalty on the impulse responses, is resolved in our method because it seeks a first approximation where the impulse responses are: \"maximally white\" -- encoded as the energy fo","authors_text":"Aim\\'e Fournier, Laurent Demanet, Pawan Bharadwaj","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2018-08-01T04:45:31Z","title":"Focused blind deconvolution"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1808.00166","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:e8cb8bcb2dcde14f7da31d27a64eb9d646c4e5cc976826992b1abda1fdd79a40","target":"record","created_at":"2026-05-17T23:45:37Z","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":"65b6c8a06c830413e2f09728bc12d3fed86b28e40c5ad20bea9cb40295b7b3f0","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2018-08-01T04:45:31Z","title_canon_sha256":"d9724be2f1e732ad2ea6b95ecc6a4fb12f6a9297db16dc3941c3b71b94aa6697"},"schema_version":"1.0","source":{"id":"1808.00166","kind":"arxiv","version":1}},"canonical_sha256":"0c096288a348737891a4bb5b538616282693fb2bbc37cea66f7957d3532b4eda","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0c096288a348737891a4bb5b538616282693fb2bbc37cea66f7957d3532b4eda","first_computed_at":"2026-05-17T23:45:37.290226Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:45:37.290226Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"lu6naxk3hFQhFx7asvYMmkSbRE29Ii5AYwITgYHC00tG3JYQtg58fOw8MZC77cOLCcZtrkMAaxWQypIjrse9Dg==","signature_status":"signed_v1","signed_at":"2026-05-17T23:45:37.290960Z","signed_message":"canonical_sha256_bytes"},"source_id":"1808.00166","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e8cb8bcb2dcde14f7da31d27a64eb9d646c4e5cc976826992b1abda1fdd79a40","sha256:f09280d2b2991ebb385cf606f26d9d9d14de150d3350f64519a2abfec265d2d1"],"state_sha256":"be6beb8be4986abfe4d5db3bfe3f772a45d1ea39a96af7a3969070298003c27c"}