{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:QUP5H4QEXECWAYJ4VFBTWEB4OP","short_pith_number":"pith:QUP5H4QE","canonical_record":{"source":{"id":"1804.10877","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IR","submitted_at":"2018-04-29T05:45:51Z","cross_cats_sorted":[],"title_canon_sha256":"9843751b110db893167432a7a67fd3ce9757adf9804ce0fbe2f7df0a8b6a72a8","abstract_canon_sha256":"0e1af1d3c1e3a977ee6853033df0b837c0852dd965c9a25aab538141788d3d2a"},"schema_version":"1.0"},"canonical_sha256":"851fd3f204b90560613ca9433b103c73d173b81758bf6752c11a46b6a02c7add","source":{"kind":"arxiv","id":"1804.10877","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1804.10877","created_at":"2026-05-18T00:17:15Z"},{"alias_kind":"arxiv_version","alias_value":"1804.10877v1","created_at":"2026-05-18T00:17:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1804.10877","created_at":"2026-05-18T00:17:15Z"},{"alias_kind":"pith_short_12","alias_value":"QUP5H4QEXECW","created_at":"2026-05-18T12:32:46Z"},{"alias_kind":"pith_short_16","alias_value":"QUP5H4QEXECWAYJ4","created_at":"2026-05-18T12:32:46Z"},{"alias_kind":"pith_short_8","alias_value":"QUP5H4QE","created_at":"2026-05-18T12:32:46Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:QUP5H4QEXECWAYJ4VFBTWEB4OP","target":"record","payload":{"canonical_record":{"source":{"id":"1804.10877","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IR","submitted_at":"2018-04-29T05:45:51Z","cross_cats_sorted":[],"title_canon_sha256":"9843751b110db893167432a7a67fd3ce9757adf9804ce0fbe2f7df0a8b6a72a8","abstract_canon_sha256":"0e1af1d3c1e3a977ee6853033df0b837c0852dd965c9a25aab538141788d3d2a"},"schema_version":"1.0"},"canonical_sha256":"851fd3f204b90560613ca9433b103c73d173b81758bf6752c11a46b6a02c7add","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:17:15.260444Z","signature_b64":"Z82sNA0IWaCok4J+HiqHJ+on0sxUA5k/baWXbHEiDE4uDuO2rDJaq0/7TWKCiY7Z+Ty2EeY6Vn8iEgbomfUsDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"851fd3f204b90560613ca9433b103c73d173b81758bf6752c11a46b6a02c7add","last_reissued_at":"2026-05-18T00:17:15.259905Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:17:15.259905Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1804.10877","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:17:15Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"MvA7H18cdUjxDvyOQBuhu/PZpNU+zj8guTPcMdtDOE6Jt2YJE+aPoQBkbTbb7fmOfHpIM47Tp9XT9PuhM42oCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-20T03:28:46.921133Z"},"content_sha256":"f5944de1cbda193abd08917b8d40a8fd40a440699c741e667a8e633635141980","schema_version":"1.0","event_id":"sha256:f5944de1cbda193abd08917b8d40a8fd40a440699c741e667a8e633635141980"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:QUP5H4QEXECWAYJ4VFBTWEB4OP","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Entity Set Search of Scientific Literature: An Unsupervised Ranking Approach","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.IR","authors_text":"Jiaming Shen, Jiawei Han, Jinfeng Xiao, Jingbo Shang, Saurabh Sinha, Xinwei He","submitted_at":"2018-04-29T05:45:51Z","abstract_excerpt":"Literature search is critical for any scientific research. Different from Web or general domain search, a large portion of queries in scientific literature search are entity-set queries, that is, multiple entities of possibly different types. Entity-set queries reflect user's need for finding documents that contain multiple entities and reveal inter-entity relationships and thus pose non-trivial challenges to existing search algorithms that model each entity separately. However, entity-set queries are usually sparse (i.e., not so repetitive), which makes ineffective many supervised ranking mod"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1804.10877","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:17:15Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"zTsK5JCxD05yU57TWiuJR5SJvLFhlFk+9VIdWwsLDA6//p58xCIFwRfkFL9zioOlDtDAu3jYbaA0LlYv9KoZAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-20T03:28:46.921492Z"},"content_sha256":"a70fed1d55ab84791e3396c04aaafb78f121870b521c6093c9692a42ce0bfcb7","schema_version":"1.0","event_id":"sha256:a70fed1d55ab84791e3396c04aaafb78f121870b521c6093c9692a42ce0bfcb7"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/QUP5H4QEXECWAYJ4VFBTWEB4OP/bundle.json","state_url":"https://pith.science/pith/QUP5H4QEXECWAYJ4VFBTWEB4OP/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/QUP5H4QEXECWAYJ4VFBTWEB4OP/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-06-20T03:28:46Z","links":{"resolver":"https://pith.science/pith/QUP5H4QEXECWAYJ4VFBTWEB4OP","bundle":"https://pith.science/pith/QUP5H4QEXECWAYJ4VFBTWEB4OP/bundle.json","state":"https://pith.science/pith/QUP5H4QEXECWAYJ4VFBTWEB4OP/state.json","well_known_bundle":"https://pith.science/.well-known/pith/QUP5H4QEXECWAYJ4VFBTWEB4OP/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:QUP5H4QEXECWAYJ4VFBTWEB4OP","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":"0e1af1d3c1e3a977ee6853033df0b837c0852dd965c9a25aab538141788d3d2a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IR","submitted_at":"2018-04-29T05:45:51Z","title_canon_sha256":"9843751b110db893167432a7a67fd3ce9757adf9804ce0fbe2f7df0a8b6a72a8"},"schema_version":"1.0","source":{"id":"1804.10877","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1804.10877","created_at":"2026-05-18T00:17:15Z"},{"alias_kind":"arxiv_version","alias_value":"1804.10877v1","created_at":"2026-05-18T00:17:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1804.10877","created_at":"2026-05-18T00:17:15Z"},{"alias_kind":"pith_short_12","alias_value":"QUP5H4QEXECW","created_at":"2026-05-18T12:32:46Z"},{"alias_kind":"pith_short_16","alias_value":"QUP5H4QEXECWAYJ4","created_at":"2026-05-18T12:32:46Z"},{"alias_kind":"pith_short_8","alias_value":"QUP5H4QE","created_at":"2026-05-18T12:32:46Z"}],"graph_snapshots":[{"event_id":"sha256:a70fed1d55ab84791e3396c04aaafb78f121870b521c6093c9692a42ce0bfcb7","target":"graph","created_at":"2026-05-18T00:17:15Z","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":"Literature search is critical for any scientific research. Different from Web or general domain search, a large portion of queries in scientific literature search are entity-set queries, that is, multiple entities of possibly different types. Entity-set queries reflect user's need for finding documents that contain multiple entities and reveal inter-entity relationships and thus pose non-trivial challenges to existing search algorithms that model each entity separately. However, entity-set queries are usually sparse (i.e., not so repetitive), which makes ineffective many supervised ranking mod","authors_text":"Jiaming Shen, Jiawei Han, Jinfeng Xiao, Jingbo Shang, Saurabh Sinha, Xinwei He","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IR","submitted_at":"2018-04-29T05:45:51Z","title":"Entity Set Search of Scientific Literature: An Unsupervised Ranking Approach"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1804.10877","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:f5944de1cbda193abd08917b8d40a8fd40a440699c741e667a8e633635141980","target":"record","created_at":"2026-05-18T00:17:15Z","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":"0e1af1d3c1e3a977ee6853033df0b837c0852dd965c9a25aab538141788d3d2a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IR","submitted_at":"2018-04-29T05:45:51Z","title_canon_sha256":"9843751b110db893167432a7a67fd3ce9757adf9804ce0fbe2f7df0a8b6a72a8"},"schema_version":"1.0","source":{"id":"1804.10877","kind":"arxiv","version":1}},"canonical_sha256":"851fd3f204b90560613ca9433b103c73d173b81758bf6752c11a46b6a02c7add","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"851fd3f204b90560613ca9433b103c73d173b81758bf6752c11a46b6a02c7add","first_computed_at":"2026-05-18T00:17:15.259905Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:17:15.259905Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Z82sNA0IWaCok4J+HiqHJ+on0sxUA5k/baWXbHEiDE4uDuO2rDJaq0/7TWKCiY7Z+Ty2EeY6Vn8iEgbomfUsDg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:17:15.260444Z","signed_message":"canonical_sha256_bytes"},"source_id":"1804.10877","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f5944de1cbda193abd08917b8d40a8fd40a440699c741e667a8e633635141980","sha256:a70fed1d55ab84791e3396c04aaafb78f121870b521c6093c9692a42ce0bfcb7"],"state_sha256":"1ed79d76b4cf8907eb893d55d039d09cf5039a61fcc3ecae97d054b72d0afa54"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"EUbvSZ+lmcpBmiPe4eQQx7x1t4aA/QDmaliR3JmPdNlu8RJ11vAIiwmBIMNe3Y8UsKwVI1vgcDnwIK65/FACAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-20T03:28:46.923373Z","bundle_sha256":"3b7a1f8cff2c2d2fc37e6d7f26c57eb937aeb7eb8cdc0debb55a39ec43e71dfe"}}