{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:R4ZD73S2734YWGDB5WP6TXPOKQ","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":"65e39c244286fc4be855b249ca98d42ad0d99aae6f1e5072bbf58388848023aa","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2018-12-18T19:57:24Z","title_canon_sha256":"320cdad6b786f6c93d1deef58bb23ef1e8112174fbd42ecfbf6150346692f7c4"},"schema_version":"1.0","source":{"id":"1812.07625","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1812.07625","created_at":"2026-07-05T00:42:59Z"},{"alias_kind":"arxiv_version","alias_value":"1812.07625v1","created_at":"2026-07-05T00:42:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1812.07625","created_at":"2026-07-05T00:42:59Z"},{"alias_kind":"pith_short_12","alias_value":"R4ZD73S2734Y","created_at":"2026-07-05T00:42:59Z"},{"alias_kind":"pith_short_16","alias_value":"R4ZD73S2734YWGDB","created_at":"2026-07-05T00:42:59Z"},{"alias_kind":"pith_short_8","alias_value":"R4ZD73S2","created_at":"2026-07-05T00:42:59Z"}],"graph_snapshots":[{"event_id":"sha256:1b734b9f60e2f8d4f6d4b40480ed90e8245848ebb9d4a26f1d4f123846d4f2b7","target":"graph","created_at":"2026-07-05T00:42:59Z","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/1812.07625/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"This paper introduces wav2letter++, the fastest open-source deep learning speech recognition framework. wav2letter++ is written entirely in C++, and uses the ArrayFire tensor library for maximum efficiency. Here we explain the architecture and design of the wav2letter++ system and compare it to other major open-source speech recognition systems. In some cases wav2letter++ is more than 2x faster than other optimized frameworks for training end-to-end neural networks for speech recognition. We also show that wav2letter++'s training times scale linearly to 64 GPUs, the highest we tested, for mode","authors_text":"Awni Hannun, Gabriel Synnaeve, Jacob Kahn, Jeff Cai, Qiantong Xu, Ronan Collobert, Vineel Pratap, Vitaliy Liptchinsky","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2018-12-18T19:57:24Z","title":"wav2letter++: The Fastest Open-source Speech Recognition System"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1812.07625","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:d0e78d5c2e2c7dc86046fbb4d259f819635795494b0a61363d674b556d52f4af","target":"record","created_at":"2026-07-05T00:42:59Z","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":"65e39c244286fc4be855b249ca98d42ad0d99aae6f1e5072bbf58388848023aa","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2018-12-18T19:57:24Z","title_canon_sha256":"320cdad6b786f6c93d1deef58bb23ef1e8112174fbd42ecfbf6150346692f7c4"},"schema_version":"1.0","source":{"id":"1812.07625","kind":"arxiv","version":1}},"canonical_sha256":"8f323fee5afef98b1861ed9fe9ddee54355a29506eae725755e7d7e344687b1e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8f323fee5afef98b1861ed9fe9ddee54355a29506eae725755e7d7e344687b1e","first_computed_at":"2026-07-05T00:42:59.619474Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:42:59.619474Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"nPnm4gB2LYGR+umqLZkfNGjX6DCZ7OJqqcUY0QO49FeYGJlQbiIs+xGTfQAx9G8BKiYxtTgWk0JcOtASUZ0JCA==","signature_status":"signed_v1","signed_at":"2026-07-05T00:42:59.619984Z","signed_message":"canonical_sha256_bytes"},"source_id":"1812.07625","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d0e78d5c2e2c7dc86046fbb4d259f819635795494b0a61363d674b556d52f4af","sha256:1b734b9f60e2f8d4f6d4b40480ed90e8245848ebb9d4a26f1d4f123846d4f2b7"],"state_sha256":"ec25c824918513e9469d30461fb0522a30cd0114e9153acc83bfdfa06607b68f"}