{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:ZCZTP3MUYYNSPQYGYHOYLPS6IV","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":"9f76c1749bf9ae9ae3fcfc40f745213d867a3bc8008a68486b6b4b19a82cde66","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2019-06-04T23:00:43Z","title_canon_sha256":"882df275c18b833ae26c0668c98f9ca7f23f0ce0dc5199bab4b0e52de6da80c4"},"schema_version":"1.0","source":{"id":"1906.01749","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1906.01749","created_at":"2026-05-17T23:42:53Z"},{"alias_kind":"arxiv_version","alias_value":"1906.01749v3","created_at":"2026-05-17T23:42:53Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1906.01749","created_at":"2026-05-17T23:42:53Z"},{"alias_kind":"pith_short_12","alias_value":"ZCZTP3MUYYNS","created_at":"2026-05-18T12:33:33Z"},{"alias_kind":"pith_short_16","alias_value":"ZCZTP3MUYYNSPQYG","created_at":"2026-05-18T12:33:33Z"},{"alias_kind":"pith_short_8","alias_value":"ZCZTP3MU","created_at":"2026-05-18T12:33:33Z"}],"graph_snapshots":[{"event_id":"sha256:b84d180a653abdc16fc86cfaf828ee744bc1029a89f3782fc17e3217d5a949ba","target":"graph","created_at":"2026-05-17T23:42:53Z","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":"Automatic generation of summaries from multiple news articles is a valuable tool as the number of online publications grows rapidly. Single document summarization (SDS) systems have benefited from advances in neural encoder-decoder model thanks to the availability of large datasets. However, multi-document summarization (MDS) of news articles has been limited to datasets of a couple of hundred examples. In this paper, we introduce Multi-News, the first large-scale MDS news dataset. Additionally, we propose an end-to-end model which incorporates a traditional extractive summarization model with","authors_text":"Alexander R. Fabbri, Dragomir R. Radev, Irene Li, Suyi Li, Tianwei She","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2019-06-04T23:00:43Z","title":"Multi-News: a Large-Scale Multi-Document Summarization Dataset and Abstractive Hierarchical Model"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1906.01749","kind":"arxiv","version":3},"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:a2079afe40e1d32a7607079a722eb18b641418243bbe1d6cab5aab54127975d2","target":"record","created_at":"2026-05-17T23:42:53Z","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":"9f76c1749bf9ae9ae3fcfc40f745213d867a3bc8008a68486b6b4b19a82cde66","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2019-06-04T23:00:43Z","title_canon_sha256":"882df275c18b833ae26c0668c98f9ca7f23f0ce0dc5199bab4b0e52de6da80c4"},"schema_version":"1.0","source":{"id":"1906.01749","kind":"arxiv","version":3}},"canonical_sha256":"c8b337ed94c61b27c306c1dd85be5e4562a38a158ac0aee2a9da9c4a5f7465b9","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c8b337ed94c61b27c306c1dd85be5e4562a38a158ac0aee2a9da9c4a5f7465b9","first_computed_at":"2026-05-17T23:42:53.062495Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:42:53.062495Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"zIlrORgYAr4LSjYDkvnzv6UL0E/K925PdbI1OJa2wDInrAT8kHvkbvP6WOOcSO3XruqDDz+GX7Qfz5CX+S6WAQ==","signature_status":"signed_v1","signed_at":"2026-05-17T23:42:53.063110Z","signed_message":"canonical_sha256_bytes"},"source_id":"1906.01749","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a2079afe40e1d32a7607079a722eb18b641418243bbe1d6cab5aab54127975d2","sha256:b84d180a653abdc16fc86cfaf828ee744bc1029a89f3782fc17e3217d5a949ba"],"state_sha256":"4cac1c747388bdbab16da1e634c90b08bdd49699e4cda9cb820ce719a7cac550"}