{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:UJZI5X5ZHARFYSWO6BOKSBJPWG","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":"f1881742f22eb5f651a7a590a3b165a170a4fca2257683a178ae966f03285137","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2019-06-13T16:49:35Z","title_canon_sha256":"c0fcba82aaae52e47e4670a85662d488ad9a7d3b82681d8ff5aca49fbac2b33a"},"schema_version":"1.0","source":{"id":"1906.05807","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1906.05807","created_at":"2026-05-17T23:43:22Z"},{"alias_kind":"arxiv_version","alias_value":"1906.05807v2","created_at":"2026-05-17T23:43:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1906.05807","created_at":"2026-05-17T23:43:22Z"},{"alias_kind":"pith_short_12","alias_value":"UJZI5X5ZHARF","created_at":"2026-05-18T12:33:30Z"},{"alias_kind":"pith_short_16","alias_value":"UJZI5X5ZHARFYSWO","created_at":"2026-05-18T12:33:30Z"},{"alias_kind":"pith_short_8","alias_value":"UJZI5X5Z","created_at":"2026-05-18T12:33:30Z"}],"graph_snapshots":[{"event_id":"sha256:3a3a0b30fa7a9bd13696e47aab6f0e746300c259a063c85ccf39f53718ea7d03","target":"graph","created_at":"2026-05-17T23:43:22Z","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":"Existing open-domain question answering (QA) models are not suitable for real-time usage because they need to process several long documents on-demand for every input query. In this paper, we introduce the query-agnostic indexable representation of document phrases that can drastically speed up open-domain QA and also allows us to reach long-tail targets. In particular, our dense-sparse phrase encoding effectively captures syntactic, semantic, and lexical information of the phrases and eliminates the pipeline filtering of context documents. Leveraging optimization strategies, our model can be ","authors_text":"Ali Farhadi, Ankur P. Parikh, Hannaneh Hajishirzi, Jinhyuk Lee, Minjoon Seo, Tom Kwiatkowski","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2019-06-13T16:49:35Z","title":"Real-Time Open-Domain Question Answering with Dense-Sparse Phrase Index"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1906.05807","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:bc34cef551525d361140cf7f1fe2c671629782f353df1a882c65979baaacbeea","target":"record","created_at":"2026-05-17T23:43:22Z","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":"f1881742f22eb5f651a7a590a3b165a170a4fca2257683a178ae966f03285137","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2019-06-13T16:49:35Z","title_canon_sha256":"c0fcba82aaae52e47e4670a85662d488ad9a7d3b82681d8ff5aca49fbac2b33a"},"schema_version":"1.0","source":{"id":"1906.05807","kind":"arxiv","version":2}},"canonical_sha256":"a2728edfb938225c4acef05ca9052fb182c7448ca0f8b0d53002dd15b086c43f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a2728edfb938225c4acef05ca9052fb182c7448ca0f8b0d53002dd15b086c43f","first_computed_at":"2026-05-17T23:43:22.678613Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:43:22.678613Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"DcaJbuu1WSulC5Z08iTYoUyemXp8nbuh41ydfLZR4dca+31iCv9g6C4hbcN96VH2i6/ZVdrMMa66DExLo/njBQ==","signature_status":"signed_v1","signed_at":"2026-05-17T23:43:22.679167Z","signed_message":"canonical_sha256_bytes"},"source_id":"1906.05807","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:bc34cef551525d361140cf7f1fe2c671629782f353df1a882c65979baaacbeea","sha256:3a3a0b30fa7a9bd13696e47aab6f0e746300c259a063c85ccf39f53718ea7d03"],"state_sha256":"68721225ce662127acef6e463afad3c15433237f600ac74c3cdd422e07dcc309"}