{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2006:ETDXNZP3SUGFFWUKU3BGLHQANA","short_pith_number":"pith:ETDXNZP3","canonical_record":{"source":{"id":"physics/0601161","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"physics.chem-ph","submitted_at":"2006-01-20T21:25:45Z","cross_cats_sorted":["cond-mat.stat-mech","cs.IT","math.IT","math.PR","math.ST","physics.comp-ph","physics.data-an","stat.TH"],"title_canon_sha256":"9317a72125853b535919bd2f5a7d2f9b778141b2ca8e10bf4d72b2370316b0d4","abstract_canon_sha256":"e689f172893cedca2e0fcf0a397e7906ac69f7f167b8734116e49707f3b1deb9"},"schema_version":"1.0"},"canonical_sha256":"24c776e5fb950c52da8aa6c2659e00681456b2a8c9b6f42f2bbd5b6c2454d966","source":{"kind":"arxiv","id":"physics/0601161","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"physics/0601161","created_at":"2026-05-18T04:08:52Z"},{"alias_kind":"arxiv_version","alias_value":"physics/0601161v1","created_at":"2026-05-18T04:08:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.physics/0601161","created_at":"2026-05-18T04:08:52Z"},{"alias_kind":"pith_short_12","alias_value":"ETDXNZP3SUGF","created_at":"2026-05-18T12:25:53Z"},{"alias_kind":"pith_short_16","alias_value":"ETDXNZP3SUGFFWUK","created_at":"2026-05-18T12:25:53Z"},{"alias_kind":"pith_short_8","alias_value":"ETDXNZP3","created_at":"2026-05-18T12:25:53Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2006:ETDXNZP3SUGFFWUKU3BGLHQANA","target":"record","payload":{"canonical_record":{"source":{"id":"physics/0601161","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"physics.chem-ph","submitted_at":"2006-01-20T21:25:45Z","cross_cats_sorted":["cond-mat.stat-mech","cs.IT","math.IT","math.PR","math.ST","physics.comp-ph","physics.data-an","stat.TH"],"title_canon_sha256":"9317a72125853b535919bd2f5a7d2f9b778141b2ca8e10bf4d72b2370316b0d4","abstract_canon_sha256":"e689f172893cedca2e0fcf0a397e7906ac69f7f167b8734116e49707f3b1deb9"},"schema_version":"1.0"},"canonical_sha256":"24c776e5fb950c52da8aa6c2659e00681456b2a8c9b6f42f2bbd5b6c2454d966","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:08:52.696841Z","signature_b64":"oEXcGpCOdscmXLYoPsrH6NeEBLmCweWrIiYRvdAASjTL9Cm+IEdhBOfAObUIpL182AH7YyhYR6G9sdiBPscVAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"24c776e5fb950c52da8aa6c2659e00681456b2a8c9b6f42f2bbd5b6c2454d966","last_reissued_at":"2026-05-18T04:08:52.696389Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:08:52.696389Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"physics/0601161","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":"2026-05-18T04:08:52Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"LXRDCTNVpeEsMgJXfaPLla1UvdRy93m8t03LsQPxJfwbCK4wDExQqrlFf0b6yT+cQ4F1Vbh1fhHW9AxyfNLvDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T23:06:51.501532Z"},"content_sha256":"5f001935417841b4fb3153194037c0bc194752ced99b6f794500745eae39a419","schema_version":"1.0","event_id":"sha256:5f001935417841b4fb3153194037c0bc194752ced99b6f794500745eae39a419"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2006:ETDXNZP3SUGFFWUKU3BGLHQANA","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Monte Carlo Algorithm for Least Dependent Non-Negative Mixture Decomposition","license":"","headline":"","cross_cats":["cond-mat.stat-mech","cs.IT","math.IT","math.PR","math.ST","physics.comp-ph","physics.data-an","stat.TH"],"primary_cat":"physics.chem-ph","authors_text":"Alexander Kraskov, Harald St\\\"ogbauer, Peter Grassberger, Sergey A. Astakhov","submitted_at":"2006-01-20T21:25:45Z","abstract_excerpt":"We propose a simulated annealing algorithm (called SNICA for \"stochastic non-negative independent component analysis\") for blind decomposition of linear mixtures of non-negative sources with non-negative coefficients. The de-mixing is based on a Metropolis type Monte Carlo search for least dependent components, with the mutual information between recovered components as a cost function and their non-negativity as a hard constraint. Elementary moves are shears in two-dimensional subspaces and rotations in three-dimensional subspaces. The algorithm is geared at decomposing signals whose probabil"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"physics/0601161","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":"2026-05-18T04:08:52Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"IMPx4F0wuSueLwo42ErCpESczfxJIdj6r7IHpGkAsJQifUFfDzcKi2YewhOtrHYHYeNALWG7w2xEeFz0Mb6QAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T23:06:51.502221Z"},"content_sha256":"c1a581e562275517c91f3d298441a323838bee35169e083fa024c7395e96fd4b","schema_version":"1.0","event_id":"sha256:c1a581e562275517c91f3d298441a323838bee35169e083fa024c7395e96fd4b"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ETDXNZP3SUGFFWUKU3BGLHQANA/bundle.json","state_url":"https://pith.science/pith/ETDXNZP3SUGFFWUKU3BGLHQANA/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ETDXNZP3SUGFFWUKU3BGLHQANA/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":"2026-05-26T23:06:51Z","links":{"resolver":"https://pith.science/pith/ETDXNZP3SUGFFWUKU3BGLHQANA","bundle":"https://pith.science/pith/ETDXNZP3SUGFFWUKU3BGLHQANA/bundle.json","state":"https://pith.science/pith/ETDXNZP3SUGFFWUKU3BGLHQANA/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ETDXNZP3SUGFFWUKU3BGLHQANA/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2006:ETDXNZP3SUGFFWUKU3BGLHQANA","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":"e689f172893cedca2e0fcf0a397e7906ac69f7f167b8734116e49707f3b1deb9","cross_cats_sorted":["cond-mat.stat-mech","cs.IT","math.IT","math.PR","math.ST","physics.comp-ph","physics.data-an","stat.TH"],"license":"","primary_cat":"physics.chem-ph","submitted_at":"2006-01-20T21:25:45Z","title_canon_sha256":"9317a72125853b535919bd2f5a7d2f9b778141b2ca8e10bf4d72b2370316b0d4"},"schema_version":"1.0","source":{"id":"physics/0601161","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"physics/0601161","created_at":"2026-05-18T04:08:52Z"},{"alias_kind":"arxiv_version","alias_value":"physics/0601161v1","created_at":"2026-05-18T04:08:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.physics/0601161","created_at":"2026-05-18T04:08:52Z"},{"alias_kind":"pith_short_12","alias_value":"ETDXNZP3SUGF","created_at":"2026-05-18T12:25:53Z"},{"alias_kind":"pith_short_16","alias_value":"ETDXNZP3SUGFFWUK","created_at":"2026-05-18T12:25:53Z"},{"alias_kind":"pith_short_8","alias_value":"ETDXNZP3","created_at":"2026-05-18T12:25:53Z"}],"graph_snapshots":[{"event_id":"sha256:c1a581e562275517c91f3d298441a323838bee35169e083fa024c7395e96fd4b","target":"graph","created_at":"2026-05-18T04:08:52Z","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 propose a simulated annealing algorithm (called SNICA for \"stochastic non-negative independent component analysis\") for blind decomposition of linear mixtures of non-negative sources with non-negative coefficients. The de-mixing is based on a Metropolis type Monte Carlo search for least dependent components, with the mutual information between recovered components as a cost function and their non-negativity as a hard constraint. Elementary moves are shears in two-dimensional subspaces and rotations in three-dimensional subspaces. The algorithm is geared at decomposing signals whose probabil","authors_text":"Alexander Kraskov, Harald St\\\"ogbauer, Peter Grassberger, Sergey A. Astakhov","cross_cats":["cond-mat.stat-mech","cs.IT","math.IT","math.PR","math.ST","physics.comp-ph","physics.data-an","stat.TH"],"headline":"","license":"","primary_cat":"physics.chem-ph","submitted_at":"2006-01-20T21:25:45Z","title":"Monte Carlo Algorithm for Least Dependent Non-Negative Mixture Decomposition"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"physics/0601161","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":"sha256:5f001935417841b4fb3153194037c0bc194752ced99b6f794500745eae39a419","target":"record","created_at":"2026-05-18T04:08:52Z","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":"e689f172893cedca2e0fcf0a397e7906ac69f7f167b8734116e49707f3b1deb9","cross_cats_sorted":["cond-mat.stat-mech","cs.IT","math.IT","math.PR","math.ST","physics.comp-ph","physics.data-an","stat.TH"],"license":"","primary_cat":"physics.chem-ph","submitted_at":"2006-01-20T21:25:45Z","title_canon_sha256":"9317a72125853b535919bd2f5a7d2f9b778141b2ca8e10bf4d72b2370316b0d4"},"schema_version":"1.0","source":{"id":"physics/0601161","kind":"arxiv","version":1}},"canonical_sha256":"24c776e5fb950c52da8aa6c2659e00681456b2a8c9b6f42f2bbd5b6c2454d966","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"24c776e5fb950c52da8aa6c2659e00681456b2a8c9b6f42f2bbd5b6c2454d966","first_computed_at":"2026-05-18T04:08:52.696389Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:08:52.696389Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"oEXcGpCOdscmXLYoPsrH6NeEBLmCweWrIiYRvdAASjTL9Cm+IEdhBOfAObUIpL182AH7YyhYR6G9sdiBPscVAA==","signature_status":"signed_v1","signed_at":"2026-05-18T04:08:52.696841Z","signed_message":"canonical_sha256_bytes"},"source_id":"physics/0601161","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5f001935417841b4fb3153194037c0bc194752ced99b6f794500745eae39a419","sha256:c1a581e562275517c91f3d298441a323838bee35169e083fa024c7395e96fd4b"],"state_sha256":"eff627829e8fafc788480956b86df42c3808c1b4ed3d3fc324a88979c0e24f83"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"lnRVpzTv987SsFu57pk1VdmmqkGgjCcZnSI+XZG76/5UBuhHJaR6awcfZNRA/p0LZ61MtNT6EuRYIrk5mdoZDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T23:06:51.505987Z","bundle_sha256":"66bd3571f141f1e528da4b93ca69abb630346adbe0638c08d3afe262e3ba5aa5"}}