{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:WEMMAUCSN4SS6QWFATWYJH6VAJ","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":"d00cc550ada08e3b8b95f618846a08df125fc5e56431a54f4ad5603f5c5b5e29","cross_cats_sorted":["eess.SP","math.IT","stat.ML"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2019-07-19T14:48:06Z","title_canon_sha256":"13d0e5694f0efac7917bfde658e6f3664d18c0c76f8fdebad0f4f1ee1f301b94"},"schema_version":"1.0","source":{"id":"1907.08535","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1907.08535","created_at":"2026-05-17T23:40:09Z"},{"alias_kind":"arxiv_version","alias_value":"1907.08535v1","created_at":"2026-05-17T23:40:09Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1907.08535","created_at":"2026-05-17T23:40:09Z"},{"alias_kind":"pith_short_12","alias_value":"WEMMAUCSN4SS","created_at":"2026-05-18T12:33:30Z"},{"alias_kind":"pith_short_16","alias_value":"WEMMAUCSN4SS6QWF","created_at":"2026-05-18T12:33:30Z"},{"alias_kind":"pith_short_8","alias_value":"WEMMAUCS","created_at":"2026-05-18T12:33:30Z"}],"graph_snapshots":[{"event_id":"sha256:ecf7bc5adf46c5004c87ea02e174e7c9b56b1f227d04258e3de0d0fab04499a7","target":"graph","created_at":"2026-05-17T23:40:09Z","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":"Autoencoder-based geometric shaping is proposed that includes optimizing bit mappings. Up to 0.2 bits/QAM symbol gain in GMI is achieved for a variety of data rates and in the presence of transceiver impairments. The gains can be harvested with standard binary FEC at no cost w.r.t. conventional BICM.","authors_text":"Darko Zibar, Metodi P. Yankov, Rasmus T. Jones","cross_cats":["eess.SP","math.IT","stat.ML"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2019-07-19T14:48:06Z","title":"End-to-end Learning for GMI Optimized Geometric Constellation Shape"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1907.08535","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:effc2d3a862150a3442b138ea873a57e2fe582eef72a6bb7c9f7e9141460348b","target":"record","created_at":"2026-05-17T23:40:09Z","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":"d00cc550ada08e3b8b95f618846a08df125fc5e56431a54f4ad5603f5c5b5e29","cross_cats_sorted":["eess.SP","math.IT","stat.ML"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2019-07-19T14:48:06Z","title_canon_sha256":"13d0e5694f0efac7917bfde658e6f3664d18c0c76f8fdebad0f4f1ee1f301b94"},"schema_version":"1.0","source":{"id":"1907.08535","kind":"arxiv","version":1}},"canonical_sha256":"b118c050526f252f42c504ed849fd50248eb1d3f0a4eb299c8f06cdea8d90258","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b118c050526f252f42c504ed849fd50248eb1d3f0a4eb299c8f06cdea8d90258","first_computed_at":"2026-05-17T23:40:09.520287Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:40:09.520287Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"8D1n/8OPp+GtIWBSG0l0UnEp2hwWxIlsZar5ulQYEv+gh5OSCqTUvBF2Fc6/xiUd+kBQ/yV1hgXg9CLbnVgZCw==","signature_status":"signed_v1","signed_at":"2026-05-17T23:40:09.520815Z","signed_message":"canonical_sha256_bytes"},"source_id":"1907.08535","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:effc2d3a862150a3442b138ea873a57e2fe582eef72a6bb7c9f7e9141460348b","sha256:ecf7bc5adf46c5004c87ea02e174e7c9b56b1f227d04258e3de0d0fab04499a7"],"state_sha256":"aed06851ea4a6dac53379f2d923179c99d535e7d8417fe877cd30b6115abad0d"}