{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:3LBIOWCERZKNWISAHEPWPPYPLW","short_pith_number":"pith:3LBIOWCE","canonical_record":{"source":{"id":"1501.05069","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.data-an","submitted_at":"2015-01-21T06:18:25Z","cross_cats_sorted":["physics.med-ph","stat.ML"],"title_canon_sha256":"3e162da7861496254767e39d94524faf1fe6d56db91bc25c01a1c301d9069c24","abstract_canon_sha256":"e2ac1b9af1389b3c65d274764801d5812aebe5383b36942108bd02642002e03b"},"schema_version":"1.0"},"canonical_sha256":"dac28758448e54db2240391f67bf0f5d998a3de4322f02244194bd6eed9c03ec","source":{"kind":"arxiv","id":"1501.05069","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1501.05069","created_at":"2026-05-18T02:29:00Z"},{"alias_kind":"arxiv_version","alias_value":"1501.05069v1","created_at":"2026-05-18T02:29:00Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1501.05069","created_at":"2026-05-18T02:29:00Z"},{"alias_kind":"pith_short_12","alias_value":"3LBIOWCERZKN","created_at":"2026-05-18T12:29:02Z"},{"alias_kind":"pith_short_16","alias_value":"3LBIOWCERZKNWISA","created_at":"2026-05-18T12:29:02Z"},{"alias_kind":"pith_short_8","alias_value":"3LBIOWCE","created_at":"2026-05-18T12:29:02Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:3LBIOWCERZKNWISAHEPWPPYPLW","target":"record","payload":{"canonical_record":{"source":{"id":"1501.05069","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.data-an","submitted_at":"2015-01-21T06:18:25Z","cross_cats_sorted":["physics.med-ph","stat.ML"],"title_canon_sha256":"3e162da7861496254767e39d94524faf1fe6d56db91bc25c01a1c301d9069c24","abstract_canon_sha256":"e2ac1b9af1389b3c65d274764801d5812aebe5383b36942108bd02642002e03b"},"schema_version":"1.0"},"canonical_sha256":"dac28758448e54db2240391f67bf0f5d998a3de4322f02244194bd6eed9c03ec","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:29:00.816644Z","signature_b64":"aMdPPrUrNkSieVBnnemXZh8KbjSnnuyiY1t+dE5NJu7Xroas2KxVCHXfJCNMuKUmY9O3u2bx5p6ELrUCn7ENCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"dac28758448e54db2240391f67bf0f5d998a3de4322f02244194bd6eed9c03ec","last_reissued_at":"2026-05-18T02:29:00.816233Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:29:00.816233Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1501.05069","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":"2026-05-18T02:29:00Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WzXwc48OhbAUlQhcBYo2A/4alZAcNjDQMLbzrs/FSLsKHwgFuk39Vn76qkY//O8p4EJauHl1kxaItfVR3w6cBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T01:36:43.258562Z"},"content_sha256":"c1f0424b2b48d1d6f8b978919dd97fb80b7f70149a8f1d93d67ddf5625dc3f35","schema_version":"1.0","event_id":"sha256:c1f0424b2b48d1d6f8b978919dd97fb80b7f70149a8f1d93d67ddf5625dc3f35"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:3LBIOWCERZKNWISAHEPWPPYPLW","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Convergent Bayesian formulations of blind source separation and electromagnetic source estimation","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.med-ph","stat.ML"],"primary_cat":"physics.data-an","authors_text":"Herbert G. Vaughan Jr, Kevin H. Knuth","submitted_at":"2015-01-21T06:18:25Z","abstract_excerpt":"We consider two areas of research that have been developing in parallel over the last decade: blind source separation (BSS) and electromagnetic source estimation (ESE). BSS deals with the recovery of source signals when only mixtures of signals can be obtained from an array of detectors and the only prior knowledge consists of some information about the nature of the source signals. On the other hand, ESE utilizes knowledge of the electromagnetic forward problem to assign source signals to their respective generators, while information about the signals themselves is typically ignored. We demo"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1501.05069","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":""},"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":"2026-05-18T02:29:00Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"lPmZV8jWWXIQaQ8fdypydBQD2Nqp79dEeikR6uo55YCdreYNPjk4qim3g3o6/YXaxmfZmXLL4Y5F+z90RPRgCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T01:36:43.259257Z"},"content_sha256":"5cd053572af91fea876f98ba9aa1ec4ec3638059a1fea13713be8c4e0df88ded","schema_version":"1.0","event_id":"sha256:5cd053572af91fea876f98ba9aa1ec4ec3638059a1fea13713be8c4e0df88ded"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/3LBIOWCERZKNWISAHEPWPPYPLW/bundle.json","state_url":"https://pith.science/pith/3LBIOWCERZKNWISAHEPWPPYPLW/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/3LBIOWCERZKNWISAHEPWPPYPLW/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":"2026-06-01T01:36:43Z","links":{"resolver":"https://pith.science/pith/3LBIOWCERZKNWISAHEPWPPYPLW","bundle":"https://pith.science/pith/3LBIOWCERZKNWISAHEPWPPYPLW/bundle.json","state":"https://pith.science/pith/3LBIOWCERZKNWISAHEPWPPYPLW/state.json","well_known_bundle":"https://pith.science/.well-known/pith/3LBIOWCERZKNWISAHEPWPPYPLW/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:3LBIOWCERZKNWISAHEPWPPYPLW","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":"e2ac1b9af1389b3c65d274764801d5812aebe5383b36942108bd02642002e03b","cross_cats_sorted":["physics.med-ph","stat.ML"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.data-an","submitted_at":"2015-01-21T06:18:25Z","title_canon_sha256":"3e162da7861496254767e39d94524faf1fe6d56db91bc25c01a1c301d9069c24"},"schema_version":"1.0","source":{"id":"1501.05069","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1501.05069","created_at":"2026-05-18T02:29:00Z"},{"alias_kind":"arxiv_version","alias_value":"1501.05069v1","created_at":"2026-05-18T02:29:00Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1501.05069","created_at":"2026-05-18T02:29:00Z"},{"alias_kind":"pith_short_12","alias_value":"3LBIOWCERZKN","created_at":"2026-05-18T12:29:02Z"},{"alias_kind":"pith_short_16","alias_value":"3LBIOWCERZKNWISA","created_at":"2026-05-18T12:29:02Z"},{"alias_kind":"pith_short_8","alias_value":"3LBIOWCE","created_at":"2026-05-18T12:29:02Z"}],"graph_snapshots":[{"event_id":"sha256:5cd053572af91fea876f98ba9aa1ec4ec3638059a1fea13713be8c4e0df88ded","target":"graph","created_at":"2026-05-18T02:29:00Z","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 consider two areas of research that have been developing in parallel over the last decade: blind source separation (BSS) and electromagnetic source estimation (ESE). BSS deals with the recovery of source signals when only mixtures of signals can be obtained from an array of detectors and the only prior knowledge consists of some information about the nature of the source signals. On the other hand, ESE utilizes knowledge of the electromagnetic forward problem to assign source signals to their respective generators, while information about the signals themselves is typically ignored. We demo","authors_text":"Herbert G. Vaughan Jr, Kevin H. Knuth","cross_cats":["physics.med-ph","stat.ML"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.data-an","submitted_at":"2015-01-21T06:18:25Z","title":"Convergent Bayesian formulations of blind source separation and electromagnetic source estimation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1501.05069","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:c1f0424b2b48d1d6f8b978919dd97fb80b7f70149a8f1d93d67ddf5625dc3f35","target":"record","created_at":"2026-05-18T02:29:00Z","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":"e2ac1b9af1389b3c65d274764801d5812aebe5383b36942108bd02642002e03b","cross_cats_sorted":["physics.med-ph","stat.ML"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.data-an","submitted_at":"2015-01-21T06:18:25Z","title_canon_sha256":"3e162da7861496254767e39d94524faf1fe6d56db91bc25c01a1c301d9069c24"},"schema_version":"1.0","source":{"id":"1501.05069","kind":"arxiv","version":1}},"canonical_sha256":"dac28758448e54db2240391f67bf0f5d998a3de4322f02244194bd6eed9c03ec","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"dac28758448e54db2240391f67bf0f5d998a3de4322f02244194bd6eed9c03ec","first_computed_at":"2026-05-18T02:29:00.816233Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:29:00.816233Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"aMdPPrUrNkSieVBnnemXZh8KbjSnnuyiY1t+dE5NJu7Xroas2KxVCHXfJCNMuKUmY9O3u2bx5p6ELrUCn7ENCA==","signature_status":"signed_v1","signed_at":"2026-05-18T02:29:00.816644Z","signed_message":"canonical_sha256_bytes"},"source_id":"1501.05069","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c1f0424b2b48d1d6f8b978919dd97fb80b7f70149a8f1d93d67ddf5625dc3f35","sha256:5cd053572af91fea876f98ba9aa1ec4ec3638059a1fea13713be8c4e0df88ded"],"state_sha256":"5e036b81e63df31aba401a1eadfbc46611333bfc925e7a9d816b09efc4bb7147"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"nisDsr+QeJ2bXwnI76u8kCM4K7LovMLZ+gvTkshFvHP1x40oX5KKhWJQHGGtPNDskQJNXuXFWJHzIcPdAUnYDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T01:36:43.262892Z","bundle_sha256":"1784b4766c15607ff0201fde2751848593ba5f9d62629bd1ce198423ecae00db"}}