{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:7TYLX7RAOL4XAG2YRTECNSBFC2","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":"6a4927a4c3d12e3e6296b126a33e6e34d58b0e256c7807ad19aee3747e39b3e7","cross_cats_sorted":["math.IT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2012-01-02T01:32:22Z","title_canon_sha256":"2801bb1494cdae498599503cb5f0ee36d7b044b46b7cce263658b33e8f74aaf3"},"schema_version":"1.0","source":{"id":"1201.0409","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1201.0409","created_at":"2026-05-18T04:05:17Z"},{"alias_kind":"arxiv_version","alias_value":"1201.0409v1","created_at":"2026-05-18T04:05:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1201.0409","created_at":"2026-05-18T04:05:17Z"},{"alias_kind":"pith_short_12","alias_value":"7TYLX7RAOL4X","created_at":"2026-05-18T12:26:58Z"},{"alias_kind":"pith_short_16","alias_value":"7TYLX7RAOL4XAG2Y","created_at":"2026-05-18T12:26:58Z"},{"alias_kind":"pith_short_8","alias_value":"7TYLX7RA","created_at":"2026-05-18T12:26:58Z"}],"graph_snapshots":[{"event_id":"sha256:2fce8d8b8ac3e9edde260c92af22430663f35fbc0abd4da6d17a0aefeae4f5c7","target":"graph","created_at":"2026-05-18T04:05:17Z","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 a noisy Slepian-Wolf problem where two correlated sources are separately encoded (using codes of fixed rate) and transmitted over two independent binary memoryless symmetric channels. The capacity of each channel is characterized by a single parameter which is not known at the transmitter. The goal is to design systems that retain near-optimal performance without channel knowledge at the transmitter.\n  It was conjectured that it may be hard to design codes that perform well for symmetric channel conditions. In this work, we present a provable capacity-achieving sequence of LDGM ens","authors_text":"Arvind Yedla, Henry D. Pfister, Krishna R. Narayanan","cross_cats":["math.IT"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2012-01-02T01:32:22Z","title":"Code Design for the Noisy Slepian-Wolf Problem"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1201.0409","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":"sha256:28eac3375ca1e86553719c5e46856f3cf46d466de812a22eddb2040bc903f18c","target":"record","created_at":"2026-05-18T04:05:17Z","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":"6a4927a4c3d12e3e6296b126a33e6e34d58b0e256c7807ad19aee3747e39b3e7","cross_cats_sorted":["math.IT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2012-01-02T01:32:22Z","title_canon_sha256":"2801bb1494cdae498599503cb5f0ee36d7b044b46b7cce263658b33e8f74aaf3"},"schema_version":"1.0","source":{"id":"1201.0409","kind":"arxiv","version":1}},"canonical_sha256":"fcf0bbfe2072f9701b588cc826c82516b20155060f8cf604f4771bcb05809ee8","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"fcf0bbfe2072f9701b588cc826c82516b20155060f8cf604f4771bcb05809ee8","first_computed_at":"2026-05-18T04:05:17.605332Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:05:17.605332Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"CxhDyVx5WyhMT+cZjdC8knaB/LvVF6neqNKC1A50KzmuFY4GHEDuLobc1Mu7RVzcIbNLeT7pN3G+oOe7tFvtBw==","signature_status":"signed_v1","signed_at":"2026-05-18T04:05:17.605877Z","signed_message":"canonical_sha256_bytes"},"source_id":"1201.0409","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:28eac3375ca1e86553719c5e46856f3cf46d466de812a22eddb2040bc903f18c","sha256:2fce8d8b8ac3e9edde260c92af22430663f35fbc0abd4da6d17a0aefeae4f5c7"],"state_sha256":"070e6a493068c38c4e428f2aa3c876b06542af1198ba8a42084988639a5350d7"}