{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:AWLJQE7JMZ2FIB3F2XU2KMKE42","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":"4bbba212da24b77210825fc4fd1ac41c2a98637d18bcbdf3020dd004507251dc","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2010-08-18T20:08:22Z","title_canon_sha256":"5adbb297bbde9fdf9ce6fc2d3ca1efd9310295b9e7dad0ba43db6afddae19d26"},"schema_version":"1.0","source":{"id":"1008.3169","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1008.3169","created_at":"2026-05-18T04:34:38Z"},{"alias_kind":"arxiv_version","alias_value":"1008.3169v2","created_at":"2026-05-18T04:34:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1008.3169","created_at":"2026-05-18T04:34:38Z"},{"alias_kind":"pith_short_12","alias_value":"AWLJQE7JMZ2F","created_at":"2026-05-18T12:26:05Z"},{"alias_kind":"pith_short_16","alias_value":"AWLJQE7JMZ2FIB3F","created_at":"2026-05-18T12:26:05Z"},{"alias_kind":"pith_short_8","alias_value":"AWLJQE7J","created_at":"2026-05-18T12:26:05Z"}],"graph_snapshots":[{"event_id":"sha256:6e771d5906ac85b6df430be120e79ca8bccae738a3d2cf7870fd4a89185bc215","target":"graph","created_at":"2026-05-18T04:34:38Z","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":"Researchers in textual entailment have begun to consider inferences involving 'downward-entailing operators', an interesting and important class of lexical items that change the way inferences are made. Recent work proposed a method for learning English downward-entailing operators that requires access to a high-quality collection of 'negative polarity items' (NPIs). However, English is one of the very few languages for which such a list exists. We propose the first approach that can be applied to the many languages for which there is no pre-existing high-precision database of NPIs. As a case ","authors_text":"Cristian Danescu-Niculescu-Mizil, Lillian Lee","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2010-08-18T20:08:22Z","title":"Don't 'have a clue'? Unsupervised co-learning of downward-entailing operators"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1008.3169","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":"sha256:75a36721799783fa27f0ec835220c374f075cb560a91e22a97b0f2fc47cd6a8a","target":"record","created_at":"2026-05-18T04:34:38Z","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":"4bbba212da24b77210825fc4fd1ac41c2a98637d18bcbdf3020dd004507251dc","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2010-08-18T20:08:22Z","title_canon_sha256":"5adbb297bbde9fdf9ce6fc2d3ca1efd9310295b9e7dad0ba43db6afddae19d26"},"schema_version":"1.0","source":{"id":"1008.3169","kind":"arxiv","version":2}},"canonical_sha256":"05969813e96674540765d5e9a53144e6ae8d21b51ef04a7a773e6a8739f54712","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"05969813e96674540765d5e9a53144e6ae8d21b51ef04a7a773e6a8739f54712","first_computed_at":"2026-05-18T04:34:38.040094Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:34:38.040094Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"opxkJFLFnbzp+O8q1FnxVYqT1P5qH66tuy6vMmcneG3b8u715VbzCauH38szP+K5jB0iYNBpaYY1AEOEWsZxCA==","signature_status":"signed_v1","signed_at":"2026-05-18T04:34:38.040555Z","signed_message":"canonical_sha256_bytes"},"source_id":"1008.3169","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:75a36721799783fa27f0ec835220c374f075cb560a91e22a97b0f2fc47cd6a8a","sha256:6e771d5906ac85b6df430be120e79ca8bccae738a3d2cf7870fd4a89185bc215"],"state_sha256":"f565ea808f540fc422246bf3ed07d7878d3e6d73e607eff3c5c28a3770aa7416"}