{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:JY7MYCVNBDV7RGDXOPGB5JGA5F","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":"0d6636a0028ed9731c27d6a6ea10294218be42d749ffea48c2e15f1c0dd526c4","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2016-06-09T23:32:41Z","title_canon_sha256":"a7027805444f34ac9e07fcb413fc646302362a626f575dafb344da8ade9cfa83"},"schema_version":"1.0","source":{"id":"1606.03143","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1606.03143","created_at":"2026-05-18T01:12:37Z"},{"alias_kind":"arxiv_version","alias_value":"1606.03143v1","created_at":"2026-05-18T01:12:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1606.03143","created_at":"2026-05-18T01:12:37Z"},{"alias_kind":"pith_short_12","alias_value":"JY7MYCVNBDV7","created_at":"2026-05-18T12:30:25Z"},{"alias_kind":"pith_short_16","alias_value":"JY7MYCVNBDV7RGDX","created_at":"2026-05-18T12:30:25Z"},{"alias_kind":"pith_short_8","alias_value":"JY7MYCVN","created_at":"2026-05-18T12:30:25Z"}],"graph_snapshots":[{"event_id":"sha256:b3049564b89cd1dc99fdbb7bdd49ff00f6cf1821bfe2c841ed0eadeedee4a776","target":"graph","created_at":"2026-05-18T01:12:37Z","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":"In this paper we explore the problem of document summarization in Persian language from two distinct angles. In our first approach, we modify a popular and widely cited Persian document summarization framework to see how it works on a realistic corpus of news articles. Human evaluation on generated summaries shows that graph-based methods perform better than the modified systems. We carry this intuition forward in our second approach, and probe deeper into the nature of graph-based systems by designing several summarizers based on centrality measures. Ad hoc evaluation using ROUGE score on the","authors_text":"Fahimeh Boroumand, Saeid Parvandeh, Shibamouli Lahiri","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2016-06-09T23:32:41Z","title":"PerSum: Novel Systems for Document Summarization in Persian"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1606.03143","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":"sha256:7f41d73a3c3e6883b392b155f74fe46c4201000a9663c1be2fa7da7cff33b55c","target":"record","created_at":"2026-05-18T01:12:37Z","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":"0d6636a0028ed9731c27d6a6ea10294218be42d749ffea48c2e15f1c0dd526c4","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2016-06-09T23:32:41Z","title_canon_sha256":"a7027805444f34ac9e07fcb413fc646302362a626f575dafb344da8ade9cfa83"},"schema_version":"1.0","source":{"id":"1606.03143","kind":"arxiv","version":1}},"canonical_sha256":"4e3ecc0aad08ebf8987773cc1ea4c0e97b3d42cdabd8642c803f68b164f0c5f9","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4e3ecc0aad08ebf8987773cc1ea4c0e97b3d42cdabd8642c803f68b164f0c5f9","first_computed_at":"2026-05-18T01:12:37.490527Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:12:37.490527Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"1QiQiHGi7K9EchCsr79yac1V8HdP4DjeI7TzAeOCtrJ6hCdPIcDB+LtjwoSqu/asTDJB0hKDbAHwfQ76KwiDBg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:12:37.490971Z","signed_message":"canonical_sha256_bytes"},"source_id":"1606.03143","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7f41d73a3c3e6883b392b155f74fe46c4201000a9663c1be2fa7da7cff33b55c","sha256:b3049564b89cd1dc99fdbb7bdd49ff00f6cf1821bfe2c841ed0eadeedee4a776"],"state_sha256":"98c86e35bf8cf13b292c427782e8296debca445e2dbac5cebbe9f9622bcd9cdb"}