{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:LFUMAWH2PFIDAE6XY5SFU7SSBJ","short_pith_number":"pith:LFUMAWH2","canonical_record":{"source":{"id":"1907.12750","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2019-07-30T06:17:19Z","cross_cats_sorted":[],"title_canon_sha256":"0068a1bb58964edd9b4cdf1d7b950e15d830d14006afb94feb1a5afd0e930bf9","abstract_canon_sha256":"b9d7cbb70c19f2af7f2a4dc68f70e43234a2db2a250010d6b6639b5129b70e70"},"schema_version":"1.0"},"canonical_sha256":"5968c058fa79503013d7c7645a7e520a49c2b67ac36c7a6c555b3cf0d9d2adee","source":{"kind":"arxiv","id":"1907.12750","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1907.12750","created_at":"2026-07-04T23:50:24Z"},{"alias_kind":"arxiv_version","alias_value":"1907.12750v1","created_at":"2026-07-04T23:50:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1907.12750","created_at":"2026-07-04T23:50:24Z"},{"alias_kind":"pith_short_12","alias_value":"LFUMAWH2PFID","created_at":"2026-07-04T23:50:24Z"},{"alias_kind":"pith_short_16","alias_value":"LFUMAWH2PFIDAE6X","created_at":"2026-07-04T23:50:24Z"},{"alias_kind":"pith_short_8","alias_value":"LFUMAWH2","created_at":"2026-07-04T23:50:24Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:LFUMAWH2PFIDAE6XY5SFU7SSBJ","target":"record","payload":{"canonical_record":{"source":{"id":"1907.12750","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2019-07-30T06:17:19Z","cross_cats_sorted":[],"title_canon_sha256":"0068a1bb58964edd9b4cdf1d7b950e15d830d14006afb94feb1a5afd0e930bf9","abstract_canon_sha256":"b9d7cbb70c19f2af7f2a4dc68f70e43234a2db2a250010d6b6639b5129b70e70"},"schema_version":"1.0"},"canonical_sha256":"5968c058fa79503013d7c7645a7e520a49c2b67ac36c7a6c555b3cf0d9d2adee","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T23:50:24.226738Z","signature_b64":"IfltKDx+QSeldExo/96yI7WKAgyZg4hNjrFrcbaZBdDBhXGYvEzAZijVPKQSwK6kCoR0m0D1FkvPqIZMnXveDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"5968c058fa79503013d7c7645a7e520a49c2b67ac36c7a6c555b3cf0d9d2adee","last_reissued_at":"2026-07-04T23:50:24.226299Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T23:50:24.226299Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1907.12750","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":"2026-07-04T23:50:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5OOInSLjauN/7pcmcLlDLcOhG2VLtiQlYk/6aDharUho4YjHCVaFtRV5xPLQiRR9CcwvFtxRnB2dRfDLRBnLCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T20:21:23.649035Z"},"content_sha256":"55ca3bb3d27ba1646f73e49b2d9ffbb3153bb4b092e2585468e22bebc6c65b7a","schema_version":"1.0","event_id":"sha256:55ca3bb3d27ba1646f73e49b2d9ffbb3153bb4b092e2585468e22bebc6c65b7a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:LFUMAWH2PFIDAE6XY5SFU7SSBJ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"English-Czech Systems in WMT19: Document-Level Transformer","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.CL","authors_text":"Dominik Mach\\'a\\v{c}ek, Martin Popel, Michal Auersperger, Ond\\v{r}ej Bojar, Pavel Pecina","submitted_at":"2019-07-30T06:17:19Z","abstract_excerpt":"We describe our NMT systems submitted to the WMT19 shared task in English-Czech news translation. Our systems are based on the Transformer model implemented in either Tensor2Tensor (T2T) or Marian framework.\n  We aimed at improving the adequacy and coherence of translated documents by enlarging the context of the source and target. Instead of translating each sentence independently, we split the document into possibly overlapping multi-sentence segments. In case of the T2T implementation, this \"document-level\"-trained system achieves a $+0.6$ BLEU improvement ($p<0.05$) relative to the same sy"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1907.12750","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/1907.12750/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-04T23:50:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"to3VGoyUDnQwv/Rnh7dfPkFZXfZ7Tp8lq7c/6jcvVrc2gWy27oE3ARoszsHBuDPvdAU4UVtK5I8BeYDC1lSvBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T20:21:23.649964Z"},"content_sha256":"3f3d56e27862d5eb2208f410ae34c5abba1ff64e647fa87c6ba27ce1a66e4355","schema_version":"1.0","event_id":"sha256:3f3d56e27862d5eb2208f410ae34c5abba1ff64e647fa87c6ba27ce1a66e4355"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/LFUMAWH2PFIDAE6XY5SFU7SSBJ/bundle.json","state_url":"https://pith.science/pith/LFUMAWH2PFIDAE6XY5SFU7SSBJ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/LFUMAWH2PFIDAE6XY5SFU7SSBJ/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":"2026-08-06T20:21:23Z","links":{"resolver":"https://pith.science/pith/LFUMAWH2PFIDAE6XY5SFU7SSBJ","bundle":"https://pith.science/pith/LFUMAWH2PFIDAE6XY5SFU7SSBJ/bundle.json","state":"https://pith.science/pith/LFUMAWH2PFIDAE6XY5SFU7SSBJ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/LFUMAWH2PFIDAE6XY5SFU7SSBJ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:LFUMAWH2PFIDAE6XY5SFU7SSBJ","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":"b9d7cbb70c19f2af7f2a4dc68f70e43234a2db2a250010d6b6639b5129b70e70","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2019-07-30T06:17:19Z","title_canon_sha256":"0068a1bb58964edd9b4cdf1d7b950e15d830d14006afb94feb1a5afd0e930bf9"},"schema_version":"1.0","source":{"id":"1907.12750","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1907.12750","created_at":"2026-07-04T23:50:24Z"},{"alias_kind":"arxiv_version","alias_value":"1907.12750v1","created_at":"2026-07-04T23:50:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1907.12750","created_at":"2026-07-04T23:50:24Z"},{"alias_kind":"pith_short_12","alias_value":"LFUMAWH2PFID","created_at":"2026-07-04T23:50:24Z"},{"alias_kind":"pith_short_16","alias_value":"LFUMAWH2PFIDAE6X","created_at":"2026-07-04T23:50:24Z"},{"alias_kind":"pith_short_8","alias_value":"LFUMAWH2","created_at":"2026-07-04T23:50:24Z"}],"graph_snapshots":[{"event_id":"sha256:3f3d56e27862d5eb2208f410ae34c5abba1ff64e647fa87c6ba27ce1a66e4355","target":"graph","created_at":"2026-07-04T23:50:24Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/1907.12750/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We describe our NMT systems submitted to the WMT19 shared task in English-Czech news translation. Our systems are based on the Transformer model implemented in either Tensor2Tensor (T2T) or Marian framework.\n  We aimed at improving the adequacy and coherence of translated documents by enlarging the context of the source and target. Instead of translating each sentence independently, we split the document into possibly overlapping multi-sentence segments. In case of the T2T implementation, this \"document-level\"-trained system achieves a $+0.6$ BLEU improvement ($p<0.05$) relative to the same sy","authors_text":"Dominik Mach\\'a\\v{c}ek, Martin Popel, Michal Auersperger, Ond\\v{r}ej Bojar, Pavel Pecina","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2019-07-30T06:17:19Z","title":"English-Czech Systems in WMT19: Document-Level Transformer"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1907.12750","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":"sha256:55ca3bb3d27ba1646f73e49b2d9ffbb3153bb4b092e2585468e22bebc6c65b7a","target":"record","created_at":"2026-07-04T23:50:24Z","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":"b9d7cbb70c19f2af7f2a4dc68f70e43234a2db2a250010d6b6639b5129b70e70","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2019-07-30T06:17:19Z","title_canon_sha256":"0068a1bb58964edd9b4cdf1d7b950e15d830d14006afb94feb1a5afd0e930bf9"},"schema_version":"1.0","source":{"id":"1907.12750","kind":"arxiv","version":1}},"canonical_sha256":"5968c058fa79503013d7c7645a7e520a49c2b67ac36c7a6c555b3cf0d9d2adee","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"5968c058fa79503013d7c7645a7e520a49c2b67ac36c7a6c555b3cf0d9d2adee","first_computed_at":"2026-07-04T23:50:24.226299Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T23:50:24.226299Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"IfltKDx+QSeldExo/96yI7WKAgyZg4hNjrFrcbaZBdDBhXGYvEzAZijVPKQSwK6kCoR0m0D1FkvPqIZMnXveDA==","signature_status":"signed_v1","signed_at":"2026-07-04T23:50:24.226738Z","signed_message":"canonical_sha256_bytes"},"source_id":"1907.12750","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:55ca3bb3d27ba1646f73e49b2d9ffbb3153bb4b092e2585468e22bebc6c65b7a","sha256:3f3d56e27862d5eb2208f410ae34c5abba1ff64e647fa87c6ba27ce1a66e4355"],"state_sha256":"bd640791980bd972fef2f74eabb7a9f0c314d41c59e1ecffc41ce2931f9adf9e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"mw/Lsyoo+G6e33PP8+io5tKkZQN6qy+5ZO0p8wBrhqbQpuA/q65obSHy+/2syIM14oQuua7wePeO65Ueyh+gBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-06T20:21:23.718895Z","bundle_sha256":"f240dcc55c53a8a1091d333123188734468a3e3741a9fb372a832091984e1929"}}