{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:P4NK6EX3LEQ677OVTMEFXSTZG7","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":"05d01b9ec7b326d44cee14b9bef5541cdb4ff9d358e7799b6a0046230fe49105","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DB","submitted_at":"2013-01-11T01:55:10Z","title_canon_sha256":"7ecc94ee9255768d7ff019c15914aaed4fc61270c692c7338b7d7551fc7781e3"},"schema_version":"1.0","source":{"id":"1301.2378","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1301.2378","created_at":"2026-05-18T03:36:38Z"},{"alias_kind":"arxiv_version","alias_value":"1301.2378v1","created_at":"2026-05-18T03:36:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1301.2378","created_at":"2026-05-18T03:36:38Z"},{"alias_kind":"pith_short_12","alias_value":"P4NK6EX3LEQ6","created_at":"2026-05-18T12:27:54Z"},{"alias_kind":"pith_short_16","alias_value":"P4NK6EX3LEQ677OV","created_at":"2026-05-18T12:27:54Z"},{"alias_kind":"pith_short_8","alias_value":"P4NK6EX3","created_at":"2026-05-18T12:27:54Z"}],"graph_snapshots":[{"event_id":"sha256:ce6ce2ec2745c2524810987c0e45036d93504bb09cf206cee133f4dd215a0097","target":"graph","created_at":"2026-05-18T03:36:38Z","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 study how to efficiently compute \\textit{frequent co-occurring terms} (FCT) in the results of a keyword query in parallel using the popular MapReduce framework. Taking as input a keyword query q and an integer k, an FCT query reports the k terms that are not in q, but appear most frequently in the results of the keyword query q over multiple joined relations. The returned terms of FCT search can be used to do query expansion and query refinement for traditional keyword search. Different from the method of FCT search in a single platform, our proposed approach can efficiently a","authors_text":"Chengfei Liu, Jeffrey Xu Yu, Jianxin Li, Liang Yao, Rui Zhou","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DB","submitted_at":"2013-01-11T01:55:10Z","title":"Query-driven Frequent Co-occurring Term Extraction over Relational Data using MapReduce"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1301.2378","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":"sha256:851963a45232cb10c2504b56f9a7999eebcf879bf36b2491fe65686c3eaa6462","target":"record","created_at":"2026-05-18T03:36:38Z","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":"05d01b9ec7b326d44cee14b9bef5541cdb4ff9d358e7799b6a0046230fe49105","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DB","submitted_at":"2013-01-11T01:55:10Z","title_canon_sha256":"7ecc94ee9255768d7ff019c15914aaed4fc61270c692c7338b7d7551fc7781e3"},"schema_version":"1.0","source":{"id":"1301.2378","kind":"arxiv","version":1}},"canonical_sha256":"7f1aaf12fb5921effdd59b085bca7937f5238a1227e7790e161de5f01a9e1a31","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7f1aaf12fb5921effdd59b085bca7937f5238a1227e7790e161de5f01a9e1a31","first_computed_at":"2026-05-18T03:36:38.088686Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:36:38.088686Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ORrotwpJbV1l8vXZtweGqBGRMUssu9AVvx55i729Nu6ymFjcFb/ywlwZ3CU8RS6U+pjH4moKl3HbAsMgG1FUDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T03:36:38.089261Z","signed_message":"canonical_sha256_bytes"},"source_id":"1301.2378","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:851963a45232cb10c2504b56f9a7999eebcf879bf36b2491fe65686c3eaa6462","sha256:ce6ce2ec2745c2524810987c0e45036d93504bb09cf206cee133f4dd215a0097"],"state_sha256":"204d9a1a193967cd46df99639d7aaee668619280ad94ee4581e3c3f31e10bd4e"}