{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:OVMZ56NZ6Q4OZESBX743GPKQDO","short_pith_number":"pith:OVMZ56NZ","canonical_record":{"source":{"id":"1902.08556","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2019-02-22T16:44:31Z","cross_cats_sorted":[],"title_canon_sha256":"b2122589a09788b8e34f2926b95dcb10d408d31819066604120bec8585d48366","abstract_canon_sha256":"166acd8c2e6373c8f6821ae1c5cef12029966c21089b479552b19629a256ac72"},"schema_version":"1.0"},"canonical_sha256":"75599ef9b9f438ec9241bff9b33d501ba890e9836d66bcca92410ac55d5b97fa","source":{"kind":"arxiv","id":"1902.08556","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1902.08556","created_at":"2026-05-17T23:52:56Z"},{"alias_kind":"arxiv_version","alias_value":"1902.08556v1","created_at":"2026-05-17T23:52:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1902.08556","created_at":"2026-05-17T23:52:56Z"},{"alias_kind":"pith_short_12","alias_value":"OVMZ56NZ6Q4O","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_16","alias_value":"OVMZ56NZ6Q4OZESB","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_8","alias_value":"OVMZ56NZ","created_at":"2026-05-18T12:33:24Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:OVMZ56NZ6Q4OZESBX743GPKQDO","target":"record","payload":{"canonical_record":{"source":{"id":"1902.08556","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2019-02-22T16:44:31Z","cross_cats_sorted":[],"title_canon_sha256":"b2122589a09788b8e34f2926b95dcb10d408d31819066604120bec8585d48366","abstract_canon_sha256":"166acd8c2e6373c8f6821ae1c5cef12029966c21089b479552b19629a256ac72"},"schema_version":"1.0"},"canonical_sha256":"75599ef9b9f438ec9241bff9b33d501ba890e9836d66bcca92410ac55d5b97fa","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:52:56.842895Z","signature_b64":"tdOveI8hWgxjTBAsyuo5m+tbyeKDGy/6PshIrcO1410oLXbQjHeSuhSDvMRBlFTS1HHi2vfGC6D2rX8vU355Aw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"75599ef9b9f438ec9241bff9b33d501ba890e9836d66bcca92410ac55d5b97fa","last_reissued_at":"2026-05-17T23:52:56.842308Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:52:56.842308Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1902.08556","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":"2026-05-17T23:52:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"rWxE1qQjTif2kVACZQmF4ErkzUYUrvTJnle9VxGyKmUF+7Tz68J3lvYReTUn0hV8+x6SkJsHQ1DjVcth8eyhBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T03:23:53.051219Z"},"content_sha256":"892ee8821a7509fc680517da5fe3f48e1e56f0afb1e781f6e905a397c43b96d5","schema_version":"1.0","event_id":"sha256:892ee8821a7509fc680517da5fe3f48e1e56f0afb1e781f6e905a397c43b96d5"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:OVMZ56NZ6Q4OZESBX743GPKQDO","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Parallel-Amplitude Architecture and Subset Ranking for Fast Distribution Matching","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"eess.SP","authors_text":"David S. Millar, Keisuke Kojima, Kieran Parsons, Tobias Fehenberger, Toshiaki Koike-Akino","submitted_at":"2019-02-22T16:44:31Z","abstract_excerpt":"A distribution matcher (DM) maps a binary input sequence into a block of nonuniformly distributed symbols. To facilitate the implementation of shaped signaling, fast DM solutions with high throughput and low serialism are required. We propose a novel DM architecture with parallel amplitudes (PADM) for which m component DMs, each with a different binary output alphabet, are operated in parallel in order to generate a shaped sequence with m amplitudes. With negligible rate loss compared to a single nonbinary DM, PA-DM has a parallelization factor that grows linearly with m, and the component DMs"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1902.08556","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":"2026-05-17T23:52:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"V+1bbWzs+GApu81aL81WH3zZ7V7CU0Fb6rkgRX7XXyV+y2DdGL7etwsT+6tKyAjdrw3I5lJIoh7/5fQqIe4kAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T03:23:53.051924Z"},"content_sha256":"c5ddc15d325927c8053307bcc2f71e3e7b4e87cd0a4cb913f75c69aa6c809951","schema_version":"1.0","event_id":"sha256:c5ddc15d325927c8053307bcc2f71e3e7b4e87cd0a4cb913f75c69aa6c809951"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/OVMZ56NZ6Q4OZESBX743GPKQDO/bundle.json","state_url":"https://pith.science/pith/OVMZ56NZ6Q4OZESBX743GPKQDO/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/OVMZ56NZ6Q4OZESBX743GPKQDO/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":"2026-05-26T03:23:53Z","links":{"resolver":"https://pith.science/pith/OVMZ56NZ6Q4OZESBX743GPKQDO","bundle":"https://pith.science/pith/OVMZ56NZ6Q4OZESBX743GPKQDO/bundle.json","state":"https://pith.science/pith/OVMZ56NZ6Q4OZESBX743GPKQDO/state.json","well_known_bundle":"https://pith.science/.well-known/pith/OVMZ56NZ6Q4OZESBX743GPKQDO/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:OVMZ56NZ6Q4OZESBX743GPKQDO","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":"166acd8c2e6373c8f6821ae1c5cef12029966c21089b479552b19629a256ac72","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2019-02-22T16:44:31Z","title_canon_sha256":"b2122589a09788b8e34f2926b95dcb10d408d31819066604120bec8585d48366"},"schema_version":"1.0","source":{"id":"1902.08556","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1902.08556","created_at":"2026-05-17T23:52:56Z"},{"alias_kind":"arxiv_version","alias_value":"1902.08556v1","created_at":"2026-05-17T23:52:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1902.08556","created_at":"2026-05-17T23:52:56Z"},{"alias_kind":"pith_short_12","alias_value":"OVMZ56NZ6Q4O","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_16","alias_value":"OVMZ56NZ6Q4OZESB","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_8","alias_value":"OVMZ56NZ","created_at":"2026-05-18T12:33:24Z"}],"graph_snapshots":[{"event_id":"sha256:c5ddc15d325927c8053307bcc2f71e3e7b4e87cd0a4cb913f75c69aa6c809951","target":"graph","created_at":"2026-05-17T23:52:56Z","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 distribution matcher (DM) maps a binary input sequence into a block of nonuniformly distributed symbols. To facilitate the implementation of shaped signaling, fast DM solutions with high throughput and low serialism are required. We propose a novel DM architecture with parallel amplitudes (PADM) for which m component DMs, each with a different binary output alphabet, are operated in parallel in order to generate a shaped sequence with m amplitudes. With negligible rate loss compared to a single nonbinary DM, PA-DM has a parallelization factor that grows linearly with m, and the component DMs","authors_text":"David S. Millar, Keisuke Kojima, Kieran Parsons, Tobias Fehenberger, Toshiaki Koike-Akino","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2019-02-22T16:44:31Z","title":"Parallel-Amplitude Architecture and Subset Ranking for Fast Distribution Matching"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1902.08556","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":"sha256:892ee8821a7509fc680517da5fe3f48e1e56f0afb1e781f6e905a397c43b96d5","target":"record","created_at":"2026-05-17T23:52:56Z","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":"166acd8c2e6373c8f6821ae1c5cef12029966c21089b479552b19629a256ac72","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2019-02-22T16:44:31Z","title_canon_sha256":"b2122589a09788b8e34f2926b95dcb10d408d31819066604120bec8585d48366"},"schema_version":"1.0","source":{"id":"1902.08556","kind":"arxiv","version":1}},"canonical_sha256":"75599ef9b9f438ec9241bff9b33d501ba890e9836d66bcca92410ac55d5b97fa","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"75599ef9b9f438ec9241bff9b33d501ba890e9836d66bcca92410ac55d5b97fa","first_computed_at":"2026-05-17T23:52:56.842308Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:52:56.842308Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"tdOveI8hWgxjTBAsyuo5m+tbyeKDGy/6PshIrcO1410oLXbQjHeSuhSDvMRBlFTS1HHi2vfGC6D2rX8vU355Aw==","signature_status":"signed_v1","signed_at":"2026-05-17T23:52:56.842895Z","signed_message":"canonical_sha256_bytes"},"source_id":"1902.08556","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:892ee8821a7509fc680517da5fe3f48e1e56f0afb1e781f6e905a397c43b96d5","sha256:c5ddc15d325927c8053307bcc2f71e3e7b4e87cd0a4cb913f75c69aa6c809951"],"state_sha256":"8dac5be60b50939a7b67db4bbcadbca54e5ce49224c0ec54a5bddcecc3758cee"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Rp6T6E+NR1gt78LWGw9CqTQf1uf2ZoQqjCUP75JqZBWuxbzMvQOxccmTyfX0b3pKMNw7FRichDUCcFSnxNQICQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T03:23:53.055326Z","bundle_sha256":"2edb8fc9005ea4cf5b4125a4f965918b7555a3df65e1f0bb690d563e2975e0b6"}}