{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:KCA2EQBFQWHY3AXOPICF72YKUP","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":"b19ea0a72590e55589eadc0c1d69014f28624b7d712d25a28ee8257902327d32","cross_cats_sorted":["cs.IR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2018-04-22T02:20:32Z","title_canon_sha256":"3b762fda87dea67c163e0726d42c07710da1f2c6869c940de29f588ed2c63cbe"},"schema_version":"1.0","source":{"id":"1804.08057","kind":"arxiv","version":4}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1804.08057","created_at":"2026-05-17T23:51:21Z"},{"alias_kind":"arxiv_version","alias_value":"1804.08057v4","created_at":"2026-05-17T23:51:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1804.08057","created_at":"2026-05-17T23:51:21Z"},{"alias_kind":"pith_short_12","alias_value":"KCA2EQBFQWHY","created_at":"2026-05-18T12:32:33Z"},{"alias_kind":"pith_short_16","alias_value":"KCA2EQBFQWHY3AXO","created_at":"2026-05-18T12:32:33Z"},{"alias_kind":"pith_short_8","alias_value":"KCA2EQBF","created_at":"2026-05-18T12:32:33Z"}],"graph_snapshots":[{"event_id":"sha256:5bf7800078e080cbf8b3e59a6c20cb2b3899f5ad88af2e5a2802b322d8a32ded","target":"graph","created_at":"2026-05-17T23:51:21Z","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":"State of the art approaches for (embedding based) unsupervised semantic search exploits either compositional similarity (of a query and a passage) or pair-wise word (or term) similarity (from the query and the passage). By design, word based approaches do not incorporate similarity in the larger context (query/passage), while compositional similarity based approaches are usually unable to take advantage of the most important cues in the context. In this paper we propose a new compositional similarity based approach, called variable centroid vector (VCVB), that tries to address both of these li","authors_text":"Alfio M. Gliozzo, Md Faisal Mahbub Chowdhury, Rishav Chakravarti, Vijil Chenthamarakshan","cross_cats":["cs.IR"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2018-04-22T02:20:32Z","title":"A Study on Passage Re-ranking in Embedding based Unsupervised Semantic Search"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1804.08057","kind":"arxiv","version":4},"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":"sha256:6b6a6d4f34f41883ad543824ecabc9156208f8d4625e83da8c04c8bdbb3d29bb","target":"record","created_at":"2026-05-17T23:51:21Z","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":"b19ea0a72590e55589eadc0c1d69014f28624b7d712d25a28ee8257902327d32","cross_cats_sorted":["cs.IR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2018-04-22T02:20:32Z","title_canon_sha256":"3b762fda87dea67c163e0726d42c07710da1f2c6869c940de29f588ed2c63cbe"},"schema_version":"1.0","source":{"id":"1804.08057","kind":"arxiv","version":4}},"canonical_sha256":"5081a24025858f8d82ee7a045feb0aa3cccc9c8d2867d5c3cd6a0e9b39aaa656","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"5081a24025858f8d82ee7a045feb0aa3cccc9c8d2867d5c3cd6a0e9b39aaa656","first_computed_at":"2026-05-17T23:51:21.407942Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:51:21.407942Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"lXYkK6QiJr3gOVThq9jr2cSkfZM3mhVpW+52Ns5VTj5xpxcPlq6l+iOMfcuk4NNTzckHrDt4AMTrcfQ7+hSFCg==","signature_status":"signed_v1","signed_at":"2026-05-17T23:51:21.408539Z","signed_message":"canonical_sha256_bytes"},"source_id":"1804.08057","source_kind":"arxiv","source_version":4}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6b6a6d4f34f41883ad543824ecabc9156208f8d4625e83da8c04c8bdbb3d29bb","sha256:5bf7800078e080cbf8b3e59a6c20cb2b3899f5ad88af2e5a2802b322d8a32ded"],"state_sha256":"00038e30da666f0bf23b8264e2c2d361cd7938becbf6152038878c5315cd610d"}