{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:S6LK3G4LGC2ZOIJ7Q2E73POR6U","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":"ebe92493459eae0c2e559381c5800a20ab680960b3c8520b2923f8507a0f386b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2019-06-17T11:01:20Z","title_canon_sha256":"d3e1b19c20d5efaa44d774f0a9fd8c028ce3ddfc4f0375f0ad9e18e2276b5b16"},"schema_version":"1.0","source":{"id":"1906.06947","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1906.06947","created_at":"2026-07-05T05:25:45Z"},{"alias_kind":"arxiv_version","alias_value":"1906.06947v1","created_at":"2026-07-05T05:25:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1906.06947","created_at":"2026-07-05T05:25:45Z"},{"alias_kind":"pith_short_12","alias_value":"S6LK3G4LGC2Z","created_at":"2026-07-05T05:25:45Z"},{"alias_kind":"pith_short_16","alias_value":"S6LK3G4LGC2ZOIJ7","created_at":"2026-07-05T05:25:45Z"},{"alias_kind":"pith_short_8","alias_value":"S6LK3G4L","created_at":"2026-07-05T05:25:45Z"}],"graph_snapshots":[{"event_id":"sha256:fd137183ad624725eac48a3283b17b2fd511a977ad75d542a2407fb8bf0e6e8d","target":"graph","created_at":"2026-07-05T05:25:45Z","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/1906.06947/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We consider open domain event extraction, the task of extracting unconstraint types of events from news clusters. A novel latent variable neural model is constructed, which is scalable to very large corpus. A dataset is collected and manually annotated, with task-specific evaluation metrics being designed. Results show that the proposed unsupervised model gives better performance compared to the state-of-the-art method for event schema induction.","authors_text":"Heyan Huang, Xiao Liu, Yue Zhang","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2019-06-17T11:01:20Z","title":"Open Domain Event Extraction Using Neural Latent Variable Models"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1906.06947","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":"sha256:69a30ff3b54bd9b86a9e14a1ca5a0a6c619c4164cc80c2010d9820f0dc48f598","target":"record","created_at":"2026-07-05T05:25:45Z","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":"ebe92493459eae0c2e559381c5800a20ab680960b3c8520b2923f8507a0f386b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2019-06-17T11:01:20Z","title_canon_sha256":"d3e1b19c20d5efaa44d774f0a9fd8c028ce3ddfc4f0375f0ad9e18e2276b5b16"},"schema_version":"1.0","source":{"id":"1906.06947","kind":"arxiv","version":1}},"canonical_sha256":"9796ad9b8b30b597213f8689fdbdd1f528ed73fd48aebe120cc9348196452f0a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9796ad9b8b30b597213f8689fdbdd1f528ed73fd48aebe120cc9348196452f0a","first_computed_at":"2026-07-05T05:25:45.958660Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T05:25:45.958660Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"plLAauRHSEjdzapTWD3ffPq47sKdTHjUxDH4sb6MuokFcQwo4UhUdi9Lrt63NnS1+PwrUooDtaTi68ujiMigCA==","signature_status":"signed_v1","signed_at":"2026-07-05T05:25:45.959062Z","signed_message":"canonical_sha256_bytes"},"source_id":"1906.06947","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:69a30ff3b54bd9b86a9e14a1ca5a0a6c619c4164cc80c2010d9820f0dc48f598","sha256:fd137183ad624725eac48a3283b17b2fd511a977ad75d542a2407fb8bf0e6e8d"],"state_sha256":"aa6ab243a894a411fc49436c42e4c1480818b45f4ca38b175b1e7f4a6de52235"}