{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:FBUVEX5UFIKLVRG4JPRBQA3M2H","short_pith_number":"pith:FBUVEX5U","canonical_record":{"source":{"id":"2105.07319","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2021-05-16T00:11:59Z","cross_cats_sorted":["cs.SD","eess.AS"],"title_canon_sha256":"1ef1c63af0b8a850b203f206375600e7dfc7e9f21f0e8890854e67df5924cd53","abstract_canon_sha256":"d63f73d7d5467fa88b1040fad2ff16bff1946bd096f5195d88b3d07754bfa65e"},"schema_version":"1.0"},"canonical_sha256":"2869525fb42a14bac4dc4be218036cd1f77a33e413be51299a97497b76905d35","source":{"kind":"arxiv","id":"2105.07319","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2105.07319","created_at":"2026-07-05T02:53:57Z"},{"alias_kind":"arxiv_version","alias_value":"2105.07319v2","created_at":"2026-07-05T02:53:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2105.07319","created_at":"2026-07-05T02:53:57Z"},{"alias_kind":"pith_short_12","alias_value":"FBUVEX5UFIKL","created_at":"2026-07-05T02:53:57Z"},{"alias_kind":"pith_short_16","alias_value":"FBUVEX5UFIKLVRG4","created_at":"2026-07-05T02:53:57Z"},{"alias_kind":"pith_short_8","alias_value":"FBUVEX5U","created_at":"2026-07-05T02:53:57Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:FBUVEX5UFIKLVRG4JPRBQA3M2H","target":"record","payload":{"canonical_record":{"source":{"id":"2105.07319","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2021-05-16T00:11:59Z","cross_cats_sorted":["cs.SD","eess.AS"],"title_canon_sha256":"1ef1c63af0b8a850b203f206375600e7dfc7e9f21f0e8890854e67df5924cd53","abstract_canon_sha256":"d63f73d7d5467fa88b1040fad2ff16bff1946bd096f5195d88b3d07754bfa65e"},"schema_version":"1.0"},"canonical_sha256":"2869525fb42a14bac4dc4be218036cd1f77a33e413be51299a97497b76905d35","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T02:53:57.641944Z","signature_b64":"vE+Df0KmoYxxWqvyEu4vTuU+UGpQWxzMd6w+EFcuD6wYVlDqBITwhBOy46KnhWySlyBcywHtXquAg4lA+XBAAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2869525fb42a14bac4dc4be218036cd1f77a33e413be51299a97497b76905d35","last_reissued_at":"2026-07-05T02:53:57.641499Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T02:53:57.641499Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2105.07319","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T02:53:57Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"gmUGyF7/IOnzA2i1MfJ8lUoy6s6YU3q4C6GW9yzic1Ib5Mtvs02jWa4NVA2fEvk8plj8eyKvZPQb18Vf4+3jBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T10:46:55.352012Z"},"content_sha256":"524bcdf7e3ad1c0de2c1bbc85bdebb52c0ccdef249f0574bf040a6c450333f0b","schema_version":"1.0","event_id":"sha256:524bcdf7e3ad1c0de2c1bbc85bdebb52c0ccdef249f0574bf040a6c450333f0b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:FBUVEX5UFIKLVRG4JPRBQA3M2H","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Volctrans Neural Speech Translation System for IWSLT 2021","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.SD","eess.AS"],"primary_cat":"cs.CL","authors_text":"Chengqi Zhao, Jian Tong, Jun Cao, Lei Li, Mingxuan Wang, Qianqian Dong, Rong Ye, Tao Wang, Zhicheng Liu","submitted_at":"2021-05-16T00:11:59Z","abstract_excerpt":"This paper describes the systems submitted to IWSLT 2021 by the Volctrans team. We participate in the offline speech translation and text-to-text simultaneous translation tracks. For offline speech translation, our best end-to-end model achieves 8.1 BLEU improvements over the benchmark on the MuST-C test set and is even approaching the results of a strong cascade solution. For text-to-text simultaneous translation, we explore the best practice to optimize the wait-k model. As a result, our final submitted systems exceed the benchmark at around 7 BLEU on the same latency regime. We will publish"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2105.07319","kind":"arxiv","version":2},"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/2105.07319/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":"2026-07-05T02:53:57Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+40vpHX032rKgdqHkenSC5Kgzc97ST1CtWoFxPhi+7Z/VzOLkF+IpOJ9SGvzbUBTUOzMPiqnvMM7zANrbOLMDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T10:46:55.352401Z"},"content_sha256":"1ffa5dd9cf0f33bf517fabf76352416824ba2b4e51d553289d22bb5d56b7150b","schema_version":"1.0","event_id":"sha256:1ffa5dd9cf0f33bf517fabf76352416824ba2b4e51d553289d22bb5d56b7150b"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/FBUVEX5UFIKLVRG4JPRBQA3M2H/bundle.json","state_url":"https://pith.science/pith/FBUVEX5UFIKLVRG4JPRBQA3M2H/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/FBUVEX5UFIKLVRG4JPRBQA3M2H/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":"2026-07-07T10:46:55Z","links":{"resolver":"https://pith.science/pith/FBUVEX5UFIKLVRG4JPRBQA3M2H","bundle":"https://pith.science/pith/FBUVEX5UFIKLVRG4JPRBQA3M2H/bundle.json","state":"https://pith.science/pith/FBUVEX5UFIKLVRG4JPRBQA3M2H/state.json","well_known_bundle":"https://pith.science/.well-known/pith/FBUVEX5UFIKLVRG4JPRBQA3M2H/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:FBUVEX5UFIKLVRG4JPRBQA3M2H","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":"d63f73d7d5467fa88b1040fad2ff16bff1946bd096f5195d88b3d07754bfa65e","cross_cats_sorted":["cs.SD","eess.AS"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2021-05-16T00:11:59Z","title_canon_sha256":"1ef1c63af0b8a850b203f206375600e7dfc7e9f21f0e8890854e67df5924cd53"},"schema_version":"1.0","source":{"id":"2105.07319","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2105.07319","created_at":"2026-07-05T02:53:57Z"},{"alias_kind":"arxiv_version","alias_value":"2105.07319v2","created_at":"2026-07-05T02:53:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2105.07319","created_at":"2026-07-05T02:53:57Z"},{"alias_kind":"pith_short_12","alias_value":"FBUVEX5UFIKL","created_at":"2026-07-05T02:53:57Z"},{"alias_kind":"pith_short_16","alias_value":"FBUVEX5UFIKLVRG4","created_at":"2026-07-05T02:53:57Z"},{"alias_kind":"pith_short_8","alias_value":"FBUVEX5U","created_at":"2026-07-05T02:53:57Z"}],"graph_snapshots":[{"event_id":"sha256:1ffa5dd9cf0f33bf517fabf76352416824ba2b4e51d553289d22bb5d56b7150b","target":"graph","created_at":"2026-07-05T02:53:57Z","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/2105.07319/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"This paper describes the systems submitted to IWSLT 2021 by the Volctrans team. We participate in the offline speech translation and text-to-text simultaneous translation tracks. For offline speech translation, our best end-to-end model achieves 8.1 BLEU improvements over the benchmark on the MuST-C test set and is even approaching the results of a strong cascade solution. For text-to-text simultaneous translation, we explore the best practice to optimize the wait-k model. As a result, our final submitted systems exceed the benchmark at around 7 BLEU on the same latency regime. We will publish","authors_text":"Chengqi Zhao, Jian Tong, Jun Cao, Lei Li, Mingxuan Wang, Qianqian Dong, Rong Ye, Tao Wang, Zhicheng Liu","cross_cats":["cs.SD","eess.AS"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2021-05-16T00:11:59Z","title":"The Volctrans Neural Speech Translation System for IWSLT 2021"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2105.07319","kind":"arxiv","version":2},"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":"sha256:524bcdf7e3ad1c0de2c1bbc85bdebb52c0ccdef249f0574bf040a6c450333f0b","target":"record","created_at":"2026-07-05T02:53:57Z","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":"d63f73d7d5467fa88b1040fad2ff16bff1946bd096f5195d88b3d07754bfa65e","cross_cats_sorted":["cs.SD","eess.AS"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2021-05-16T00:11:59Z","title_canon_sha256":"1ef1c63af0b8a850b203f206375600e7dfc7e9f21f0e8890854e67df5924cd53"},"schema_version":"1.0","source":{"id":"2105.07319","kind":"arxiv","version":2}},"canonical_sha256":"2869525fb42a14bac4dc4be218036cd1f77a33e413be51299a97497b76905d35","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2869525fb42a14bac4dc4be218036cd1f77a33e413be51299a97497b76905d35","first_computed_at":"2026-07-05T02:53:57.641499Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:53:57.641499Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"vE+Df0KmoYxxWqvyEu4vTuU+UGpQWxzMd6w+EFcuD6wYVlDqBITwhBOy46KnhWySlyBcywHtXquAg4lA+XBAAw==","signature_status":"signed_v1","signed_at":"2026-07-05T02:53:57.641944Z","signed_message":"canonical_sha256_bytes"},"source_id":"2105.07319","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:524bcdf7e3ad1c0de2c1bbc85bdebb52c0ccdef249f0574bf040a6c450333f0b","sha256:1ffa5dd9cf0f33bf517fabf76352416824ba2b4e51d553289d22bb5d56b7150b"],"state_sha256":"61ba30b6f6fb7cfa999fe958ab01f26c206dd6beff091a99fc26dc117f53ded7"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"uMxgW3tgveEwZKrI5c88zSxAy4qzQtN1pziPW8DjTLk5STHHrly8pBqOHMro5RAmQQokDsGpbxxxDamZi3AtAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-07T10:46:55.354323Z","bundle_sha256":"0ede22b571343061389c399c734228e2534d8352b68291a7bfc20a413e316c36"}}