{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:HBPQAR3CY5SAH3XPS4GNZDM6F5","short_pith_number":"pith:HBPQAR3C","canonical_record":{"source":{"id":"1906.05786","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2019-06-13T16:22:44Z","cross_cats_sorted":[],"title_canon_sha256":"9a13becddd4fa8594a1e3abc11ab211c9b77f823c941dd0809c6f7988610eefe","abstract_canon_sha256":"75acf9d32f8e64aa0beb184106b16ca66954440d6657ac27ad37d9943e7eaf13"},"schema_version":"1.0"},"canonical_sha256":"385f004762c76403eeef970cdc8d9e2f5332b48dc458a76e4ae8cfeeedff21e5","source":{"kind":"arxiv","id":"1906.05786","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1906.05786","created_at":"2026-05-17T23:43:24Z"},{"alias_kind":"arxiv_version","alias_value":"1906.05786v1","created_at":"2026-05-17T23:43:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1906.05786","created_at":"2026-05-17T23:43:24Z"},{"alias_kind":"pith_short_12","alias_value":"HBPQAR3CY5SA","created_at":"2026-05-18T12:33:18Z"},{"alias_kind":"pith_short_16","alias_value":"HBPQAR3CY5SAH3XP","created_at":"2026-05-18T12:33:18Z"},{"alias_kind":"pith_short_8","alias_value":"HBPQAR3C","created_at":"2026-05-18T12:33:18Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:HBPQAR3CY5SAH3XPS4GNZDM6F5","target":"record","payload":{"canonical_record":{"source":{"id":"1906.05786","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2019-06-13T16:22:44Z","cross_cats_sorted":[],"title_canon_sha256":"9a13becddd4fa8594a1e3abc11ab211c9b77f823c941dd0809c6f7988610eefe","abstract_canon_sha256":"75acf9d32f8e64aa0beb184106b16ca66954440d6657ac27ad37d9943e7eaf13"},"schema_version":"1.0"},"canonical_sha256":"385f004762c76403eeef970cdc8d9e2f5332b48dc458a76e4ae8cfeeedff21e5","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:43:24.387716Z","signature_b64":"uof6X2Q8zoyZWuwCmFZsqGhW+Prx8XPjH2ZL3RRLY2xCwI9rQeV3750hnwXzS+U/S6WWIa+dOmW161kp06v0Bg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"385f004762c76403eeef970cdc8d9e2f5332b48dc458a76e4ae8cfeeedff21e5","last_reissued_at":"2026-05-17T23:43:24.387226Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:43:24.387226Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1906.05786","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":"2026-05-17T23:43:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"jVaYV0Vr+r75S6LHU6HMB49iIKv9S+hwaGQor9Ifi5Vl5itFXifGfMeR/YPhFNDtPhUeeDSl5+DpgiTO2EXXCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T03:39:57.477210Z"},"content_sha256":"3851f94341cecb5d0a89ec51bb0bb31fdb6fdc1741ece17238e6bd97d7aa7384","schema_version":"1.0","event_id":"sha256:3851f94341cecb5d0a89ec51bb0bb31fdb6fdc1741ece17238e6bd97d7aa7384"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:HBPQAR3CY5SAH3XPS4GNZDM6F5","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"UCAM Biomedical translation at WMT19: Transfer learning multi-domain ensembles","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.CL","authors_text":"Bill Byrne, Danielle Saunders, Felix Stahlberg","submitted_at":"2019-06-13T16:22:44Z","abstract_excerpt":"The 2019 WMT Biomedical translation task involved translating Medline abstracts. We approached this using transfer learning to obtain a series of strong neural models on distinct domains, and combining them into multi-domain ensembles. We further experiment with an adaptive language-model ensemble weighting scheme. Our submission achieved the best submitted results on both directions of English-Spanish."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1906.05786","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":"2026-05-17T23:43:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"UVsK5bumfNEw1OqpQ25iMhccgOkWTOj1lfdDqtwjQaaOJG0T26V/HrOEwDeDPLvylFJYi4LqRNw8dy+bHMWDCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T03:39:57.477878Z"},"content_sha256":"8181289a267e805ba4b0b1d726b44038a5a8058b5711dbd7df8dc4b7f4c16de0","schema_version":"1.0","event_id":"sha256:8181289a267e805ba4b0b1d726b44038a5a8058b5711dbd7df8dc4b7f4c16de0"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/HBPQAR3CY5SAH3XPS4GNZDM6F5/bundle.json","state_url":"https://pith.science/pith/HBPQAR3CY5SAH3XPS4GNZDM6F5/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/HBPQAR3CY5SAH3XPS4GNZDM6F5/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":"2026-05-27T03:39:57Z","links":{"resolver":"https://pith.science/pith/HBPQAR3CY5SAH3XPS4GNZDM6F5","bundle":"https://pith.science/pith/HBPQAR3CY5SAH3XPS4GNZDM6F5/bundle.json","state":"https://pith.science/pith/HBPQAR3CY5SAH3XPS4GNZDM6F5/state.json","well_known_bundle":"https://pith.science/.well-known/pith/HBPQAR3CY5SAH3XPS4GNZDM6F5/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:HBPQAR3CY5SAH3XPS4GNZDM6F5","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":"75acf9d32f8e64aa0beb184106b16ca66954440d6657ac27ad37d9943e7eaf13","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2019-06-13T16:22:44Z","title_canon_sha256":"9a13becddd4fa8594a1e3abc11ab211c9b77f823c941dd0809c6f7988610eefe"},"schema_version":"1.0","source":{"id":"1906.05786","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1906.05786","created_at":"2026-05-17T23:43:24Z"},{"alias_kind":"arxiv_version","alias_value":"1906.05786v1","created_at":"2026-05-17T23:43:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1906.05786","created_at":"2026-05-17T23:43:24Z"},{"alias_kind":"pith_short_12","alias_value":"HBPQAR3CY5SA","created_at":"2026-05-18T12:33:18Z"},{"alias_kind":"pith_short_16","alias_value":"HBPQAR3CY5SAH3XP","created_at":"2026-05-18T12:33:18Z"},{"alias_kind":"pith_short_8","alias_value":"HBPQAR3C","created_at":"2026-05-18T12:33:18Z"}],"graph_snapshots":[{"event_id":"sha256:8181289a267e805ba4b0b1d726b44038a5a8058b5711dbd7df8dc4b7f4c16de0","target":"graph","created_at":"2026-05-17T23:43:24Z","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"},"paper":{"abstract_excerpt":"The 2019 WMT Biomedical translation task involved translating Medline abstracts. We approached this using transfer learning to obtain a series of strong neural models on distinct domains, and combining them into multi-domain ensembles. We further experiment with an adaptive language-model ensemble weighting scheme. Our submission achieved the best submitted results on both directions of English-Spanish.","authors_text":"Bill Byrne, Danielle Saunders, Felix Stahlberg","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2019-06-13T16:22:44Z","title":"UCAM Biomedical translation at WMT19: Transfer learning multi-domain ensembles"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1906.05786","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":"sha256:3851f94341cecb5d0a89ec51bb0bb31fdb6fdc1741ece17238e6bd97d7aa7384","target":"record","created_at":"2026-05-17T23:43:24Z","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":"75acf9d32f8e64aa0beb184106b16ca66954440d6657ac27ad37d9943e7eaf13","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2019-06-13T16:22:44Z","title_canon_sha256":"9a13becddd4fa8594a1e3abc11ab211c9b77f823c941dd0809c6f7988610eefe"},"schema_version":"1.0","source":{"id":"1906.05786","kind":"arxiv","version":1}},"canonical_sha256":"385f004762c76403eeef970cdc8d9e2f5332b48dc458a76e4ae8cfeeedff21e5","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"385f004762c76403eeef970cdc8d9e2f5332b48dc458a76e4ae8cfeeedff21e5","first_computed_at":"2026-05-17T23:43:24.387226Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:43:24.387226Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"uof6X2Q8zoyZWuwCmFZsqGhW+Prx8XPjH2ZL3RRLY2xCwI9rQeV3750hnwXzS+U/S6WWIa+dOmW161kp06v0Bg==","signature_status":"signed_v1","signed_at":"2026-05-17T23:43:24.387716Z","signed_message":"canonical_sha256_bytes"},"source_id":"1906.05786","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3851f94341cecb5d0a89ec51bb0bb31fdb6fdc1741ece17238e6bd97d7aa7384","sha256:8181289a267e805ba4b0b1d726b44038a5a8058b5711dbd7df8dc4b7f4c16de0"],"state_sha256":"75910d77de007ee19b5df16354cfaa6ec15f25d29cdc73d657a2c6da53a83687"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"gshn1R43NVtzHaX3BHKBHynzH8BNw9BEloCW94ZdHrUJaLSq19a6v2cPQzGUFCspcfgJaivSUBCkPWLQLq8eBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T03:39:57.481531Z","bundle_sha256":"28593d987721629687de9b00b17f2a1766212ef03c6cb1f14cb44151cf7013f7"}}