{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:56OZAFXE2NGMPOSUEHS4HE47YK","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":"4a2c326e9c4cb52f10445422d90a3e55a5a7d19004bb157501c06668b4cdf6d9","cross_cats_sorted":["cs.AI"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CL","submitted_at":"2019-05-03T01:45:50Z","title_canon_sha256":"25d0de36b753c35d2ec301da1992139ca61cd72d53431c2bf9c910452c4dd207"},"schema_version":"1.0","source":{"id":"1905.01966","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1905.01966","created_at":"2026-05-17T23:46:52Z"},{"alias_kind":"arxiv_version","alias_value":"1905.01966v2","created_at":"2026-05-17T23:46:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1905.01966","created_at":"2026-05-17T23:46:52Z"},{"alias_kind":"pith_short_12","alias_value":"56OZAFXE2NGM","created_at":"2026-05-18T12:33:10Z"},{"alias_kind":"pith_short_16","alias_value":"56OZAFXE2NGMPOSU","created_at":"2026-05-18T12:33:10Z"},{"alias_kind":"pith_short_8","alias_value":"56OZAFXE","created_at":"2026-05-18T12:33:10Z"}],"graph_snapshots":[{"event_id":"sha256:6b87de0912883d95e9c5a66fd26138e59b3b6a593847a79f57d57363e83e9ac8","target":"graph","created_at":"2026-05-17T23:46:52Z","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":"Domain-specific community question answering is becoming an integral part of professions. Finding related questions and answers in these communities can significantly improve the effectiveness and efficiency of information seeking. Stack Overflow is one of the most popular communities that is being used by millions of programmers. In this paper, we analyze the problem of predicting knowledge unit (question thread) relatedness in Stack Overflow. In particular, we formulate the question relatedness task as a multi-class classification problem with four degrees of relatedness. We present a large-","authors_text":"Amin Alipour, Amirreza Shirani, Bowen Xu, David Lo, Thamar Solorio","cross_cats":["cs.AI"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CL","submitted_at":"2019-05-03T01:45:50Z","title":"Question Relatedness on Stack Overflow: The Task, Dataset, and Corpus-inspired Models"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1905.01966","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":"sha256:179ac000c8f9d38e999faf88849a23ab8500924a10c02e6f02e2eec0f7cdc4f8","target":"record","created_at":"2026-05-17T23:46:52Z","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":"4a2c326e9c4cb52f10445422d90a3e55a5a7d19004bb157501c06668b4cdf6d9","cross_cats_sorted":["cs.AI"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CL","submitted_at":"2019-05-03T01:45:50Z","title_canon_sha256":"25d0de36b753c35d2ec301da1992139ca61cd72d53431c2bf9c910452c4dd207"},"schema_version":"1.0","source":{"id":"1905.01966","kind":"arxiv","version":2}},"canonical_sha256":"ef9d9016e4d34cc7ba5421e5c3939fc2bd0fa72ca75d174a17531a0c866e2774","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ef9d9016e4d34cc7ba5421e5c3939fc2bd0fa72ca75d174a17531a0c866e2774","first_computed_at":"2026-05-17T23:46:52.086578Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:46:52.086578Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"yHuvJ1rOUvtYzx0w03XBeMe+kMzbBWDK5okh9cGXoC8JDJySMgJjuxnkj7ZmBWtCwm3/ZO+icinPWzfsWrvrBg==","signature_status":"signed_v1","signed_at":"2026-05-17T23:46:52.087221Z","signed_message":"canonical_sha256_bytes"},"source_id":"1905.01966","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:179ac000c8f9d38e999faf88849a23ab8500924a10c02e6f02e2eec0f7cdc4f8","sha256:6b87de0912883d95e9c5a66fd26138e59b3b6a593847a79f57d57363e83e9ac8"],"state_sha256":"0cc451d1f4e4a78a7502b53212da76b5e8d5625ad1d75171fa1c5b52c5079771"}