{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:ZTCL3WGNDV3FIXFLKONAUVJP4T","short_pith_number":"pith:ZTCL3WGN","canonical_record":{"source":{"id":"2005.08700","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.AS","submitted_at":"2020-05-18T13:30:16Z","cross_cats_sorted":["cs.SD"],"title_canon_sha256":"af8e5eb20c181c0782767690eac7c122a27169207986cdb3eb968daa1f67c53a","abstract_canon_sha256":"319a06d310702d20b302ac6b26eef52b630a4e67edc279b50170d464028333ce"},"schema_version":"1.0"},"canonical_sha256":"ccc4bdd8cd1d76545cab539a0a552fe4c9f329d8227a7b8275792667928283d8","source":{"kind":"arxiv","id":"2005.08700","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2005.08700","created_at":"2026-07-05T01:27:23Z"},{"alias_kind":"arxiv_version","alias_value":"2005.08700v2","created_at":"2026-07-05T01:27:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2005.08700","created_at":"2026-07-05T01:27:23Z"},{"alias_kind":"pith_short_12","alias_value":"ZTCL3WGNDV3F","created_at":"2026-07-05T01:27:23Z"},{"alias_kind":"pith_short_16","alias_value":"ZTCL3WGNDV3FIXFL","created_at":"2026-07-05T01:27:23Z"},{"alias_kind":"pith_short_8","alias_value":"ZTCL3WGN","created_at":"2026-07-05T01:27:23Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:ZTCL3WGNDV3FIXFLKONAUVJP4T","target":"record","payload":{"canonical_record":{"source":{"id":"2005.08700","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.AS","submitted_at":"2020-05-18T13:30:16Z","cross_cats_sorted":["cs.SD"],"title_canon_sha256":"af8e5eb20c181c0782767690eac7c122a27169207986cdb3eb968daa1f67c53a","abstract_canon_sha256":"319a06d310702d20b302ac6b26eef52b630a4e67edc279b50170d464028333ce"},"schema_version":"1.0"},"canonical_sha256":"ccc4bdd8cd1d76545cab539a0a552fe4c9f329d8227a7b8275792667928283d8","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:27:23.615949Z","signature_b64":"wbuYngpPiyCPe8CABkM2VlmkdwB8b1a30oVvR/TWy5Huf2zgClj/yMtf7r6uzYi10wQElP/T04H9FM0bS3AtCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ccc4bdd8cd1d76545cab539a0a552fe4c9f329d8227a7b8275792667928283d8","last_reissued_at":"2026-07-05T01:27:23.615366Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:27:23.615366Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2005.08700","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":"2026-07-05T01:27:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"PeRXdU638oY7CDfPQFdwnwWAmq2ulzPH2dybtadJvjCB/0qFG852+N3z/Vk3Ld4vTNNK5bHrv1QWBw3i9RHnCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T16:33:51.033740Z"},"content_sha256":"90947519436ee30a721fe168272a8fd7c862bf061a5bc0b391207df658b95e86","schema_version":"1.0","event_id":"sha256:90947519436ee30a721fe168272a8fd7c862bf061a5bc0b391207df658b95e86"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:ZTCL3WGNDV3FIXFLKONAUVJP4T","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Mask CTC: Non-Autoregressive End-to-End ASR with CTC and Mask Predict","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.SD"],"primary_cat":"eess.AS","authors_text":"Nanxin Chen, Shinji Watanabe, Tetsuji Ogawa, Tetsunori Kobayashi, Yosuke Higuchi","submitted_at":"2020-05-18T13:30:16Z","abstract_excerpt":"We present Mask CTC, a novel non-autoregressive end-to-end automatic speech recognition (ASR) framework, which generates a sequence by refining outputs of the connectionist temporal classification (CTC). Neural sequence-to-sequence models are usually \\textit{autoregressive}: each output token is generated by conditioning on previously generated tokens, at the cost of requiring as many iterations as the output length. On the other hand, non-autoregressive models can simultaneously generate tokens within a constant number of iterations, which results in significant inference time reduction and b"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2005.08700","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/2005.08700/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":"2026-07-05T01:27:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"OvnerMBB+q/hcNMYD6J4y1JgPU/0sD5yaTWoRi1oswGH9ewDflIdpexFtKKeOJsshi1nkRC7pfndxnJBRjiRBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T16:33:51.034325Z"},"content_sha256":"a188b50ed30be961256c24bad4cf510a7e5382222c45b742f05d50f367090056","schema_version":"1.0","event_id":"sha256:a188b50ed30be961256c24bad4cf510a7e5382222c45b742f05d50f367090056"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ZTCL3WGNDV3FIXFLKONAUVJP4T/bundle.json","state_url":"https://pith.science/pith/ZTCL3WGNDV3FIXFLKONAUVJP4T/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ZTCL3WGNDV3FIXFLKONAUVJP4T/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":"2026-08-03T16:33:51Z","links":{"resolver":"https://pith.science/pith/ZTCL3WGNDV3FIXFLKONAUVJP4T","bundle":"https://pith.science/pith/ZTCL3WGNDV3FIXFLKONAUVJP4T/bundle.json","state":"https://pith.science/pith/ZTCL3WGNDV3FIXFLKONAUVJP4T/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ZTCL3WGNDV3FIXFLKONAUVJP4T/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:ZTCL3WGNDV3FIXFLKONAUVJP4T","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":"319a06d310702d20b302ac6b26eef52b630a4e67edc279b50170d464028333ce","cross_cats_sorted":["cs.SD"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.AS","submitted_at":"2020-05-18T13:30:16Z","title_canon_sha256":"af8e5eb20c181c0782767690eac7c122a27169207986cdb3eb968daa1f67c53a"},"schema_version":"1.0","source":{"id":"2005.08700","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2005.08700","created_at":"2026-07-05T01:27:23Z"},{"alias_kind":"arxiv_version","alias_value":"2005.08700v2","created_at":"2026-07-05T01:27:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2005.08700","created_at":"2026-07-05T01:27:23Z"},{"alias_kind":"pith_short_12","alias_value":"ZTCL3WGNDV3F","created_at":"2026-07-05T01:27:23Z"},{"alias_kind":"pith_short_16","alias_value":"ZTCL3WGNDV3FIXFL","created_at":"2026-07-05T01:27:23Z"},{"alias_kind":"pith_short_8","alias_value":"ZTCL3WGN","created_at":"2026-07-05T01:27:23Z"}],"graph_snapshots":[{"event_id":"sha256:a188b50ed30be961256c24bad4cf510a7e5382222c45b742f05d50f367090056","target":"graph","created_at":"2026-07-05T01:27:23Z","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/2005.08700/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We present Mask CTC, a novel non-autoregressive end-to-end automatic speech recognition (ASR) framework, which generates a sequence by refining outputs of the connectionist temporal classification (CTC). Neural sequence-to-sequence models are usually \\textit{autoregressive}: each output token is generated by conditioning on previously generated tokens, at the cost of requiring as many iterations as the output length. On the other hand, non-autoregressive models can simultaneously generate tokens within a constant number of iterations, which results in significant inference time reduction and b","authors_text":"Nanxin Chen, Shinji Watanabe, Tetsuji Ogawa, Tetsunori Kobayashi, Yosuke Higuchi","cross_cats":["cs.SD"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.AS","submitted_at":"2020-05-18T13:30:16Z","title":"Mask CTC: Non-Autoregressive End-to-End ASR with CTC and Mask Predict"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2005.08700","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":"sha256:90947519436ee30a721fe168272a8fd7c862bf061a5bc0b391207df658b95e86","target":"record","created_at":"2026-07-05T01:27:23Z","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":"319a06d310702d20b302ac6b26eef52b630a4e67edc279b50170d464028333ce","cross_cats_sorted":["cs.SD"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.AS","submitted_at":"2020-05-18T13:30:16Z","title_canon_sha256":"af8e5eb20c181c0782767690eac7c122a27169207986cdb3eb968daa1f67c53a"},"schema_version":"1.0","source":{"id":"2005.08700","kind":"arxiv","version":2}},"canonical_sha256":"ccc4bdd8cd1d76545cab539a0a552fe4c9f329d8227a7b8275792667928283d8","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ccc4bdd8cd1d76545cab539a0a552fe4c9f329d8227a7b8275792667928283d8","first_computed_at":"2026-07-05T01:27:23.615366Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:27:23.615366Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"wbuYngpPiyCPe8CABkM2VlmkdwB8b1a30oVvR/TWy5Huf2zgClj/yMtf7r6uzYi10wQElP/T04H9FM0bS3AtCw==","signature_status":"signed_v1","signed_at":"2026-07-05T01:27:23.615949Z","signed_message":"canonical_sha256_bytes"},"source_id":"2005.08700","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:90947519436ee30a721fe168272a8fd7c862bf061a5bc0b391207df658b95e86","sha256:a188b50ed30be961256c24bad4cf510a7e5382222c45b742f05d50f367090056"],"state_sha256":"5448a3a7be5d94af6b22d44494ac7c1856b175b82078c23223eb846effb8a85d"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"pnpKnPPoTpdHhF+nJkNZpgWCI3oigCJIt35anHsN1SIObHrc2G0+QwbZDbKWoBZhDXRCAhaUw6e4DI5hH1gYCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-03T16:33:51.043879Z","bundle_sha256":"c4b1d4118fd93c7b5d7f03d40e49d812bab07fba4277253c09bb1165e61ec419"}}