{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:QBPN6J4KLKVJKFE7434LHMW7EY","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":"3756babd4e76726efebe1deeb498b046b0007df4eee451b120769895cf4a3eea","cross_cats_sorted":["cs.CV","math.IT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2014-08-04T18:47:24Z","title_canon_sha256":"ec4be027610c1a7d57ad1729ba0391f3762fa0bb7965c580b76e6ec197306cbb"},"schema_version":"1.0","source":{"id":"1408.0765","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1408.0765","created_at":"2026-05-18T00:59:02Z"},{"alias_kind":"arxiv_version","alias_value":"1408.0765v2","created_at":"2026-05-18T00:59:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1408.0765","created_at":"2026-05-18T00:59:02Z"},{"alias_kind":"pith_short_12","alias_value":"QBPN6J4KLKVJ","created_at":"2026-05-18T12:28:43Z"},{"alias_kind":"pith_short_16","alias_value":"QBPN6J4KLKVJKFE7","created_at":"2026-05-18T12:28:43Z"},{"alias_kind":"pith_short_8","alias_value":"QBPN6J4K","created_at":"2026-05-18T12:28:43Z"}],"graph_snapshots":[{"event_id":"sha256:5d69781e83a62ceba564035322de13a2843928af39825d2b73d28644ae6da79c","target":"graph","created_at":"2026-05-18T00:59:02Z","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":"A novel Bayesian modulation classification scheme is proposed for a single-antenna system over frequency-selective fading channels. The method is based on Gibbs sampling as applied to a latent Dirichlet Bayesian network (BN). The use of the proposed latent Dirichlet BN provides a systematic solution to the convergence problem encountered by the conventional Gibbs sampling approach for modulation classification. The method generalizes, and is shown to improve upon, the state of the art.","authors_text":"Alexander M. Haimovich, Osvaldo Simeone, Wei Su, Yu Liu","cross_cats":["cs.CV","math.IT"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2014-08-04T18:47:24Z","title":"Modulation Classification via Gibbs Sampling Based on a Latent Dirichlet Bayesian Network"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1408.0765","kind":"arxiv","version":2},"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":"sha256:57ba473e4300784a9593b26b3f64a52fc0cb4a302a91c208abb94e1400450441","target":"record","created_at":"2026-05-18T00:59:02Z","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":"3756babd4e76726efebe1deeb498b046b0007df4eee451b120769895cf4a3eea","cross_cats_sorted":["cs.CV","math.IT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2014-08-04T18:47:24Z","title_canon_sha256":"ec4be027610c1a7d57ad1729ba0391f3762fa0bb7965c580b76e6ec197306cbb"},"schema_version":"1.0","source":{"id":"1408.0765","kind":"arxiv","version":2}},"canonical_sha256":"805edf278a5aaa95149fe6f8b3b2df2608885bdbf88f41939eb0c84f0868584f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"805edf278a5aaa95149fe6f8b3b2df2608885bdbf88f41939eb0c84f0868584f","first_computed_at":"2026-05-18T00:59:02.815134Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:59:02.815134Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"sU/dqTT8BthCTDfO/lJTMAQGeK3PpuHACNvpA8ZZCfP8we3hFE0Np4Im4FDBwFyLVfESPa+HE/JrcOm9/d4PDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:59:02.815643Z","signed_message":"canonical_sha256_bytes"},"source_id":"1408.0765","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:57ba473e4300784a9593b26b3f64a52fc0cb4a302a91c208abb94e1400450441","sha256:5d69781e83a62ceba564035322de13a2843928af39825d2b73d28644ae6da79c"],"state_sha256":"5223083f34b2b943c462455223fc470ae595072439750409e083980e5b67f51e"}