{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:67FRGP2ZU2YOY6Y5QYWVMQSUYB","short_pith_number":"pith:67FRGP2Z","canonical_record":{"source":{"id":"1807.09944","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DL","submitted_at":"2018-07-26T03:44:42Z","cross_cats_sorted":[],"title_canon_sha256":"baef2628da540408f72be99bd7005ae9168db456b25474abe71c8ef603d81abb","abstract_canon_sha256":"bccec944ab7051f024f29546baeb07c60099b161ecc009c6896d7892dd6d42ed"},"schema_version":"1.0"},"canonical_sha256":"f7cb133f59a6b0ec7b1d862d564254c045e55cf5f59cdefebafb86362e5d2e7a","source":{"kind":"arxiv","id":"1807.09944","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1807.09944","created_at":"2026-05-18T00:07:49Z"},{"alias_kind":"arxiv_version","alias_value":"1807.09944v1","created_at":"2026-05-18T00:07:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1807.09944","created_at":"2026-05-18T00:07:49Z"},{"alias_kind":"pith_short_12","alias_value":"67FRGP2ZU2YO","created_at":"2026-05-18T12:32:08Z"},{"alias_kind":"pith_short_16","alias_value":"67FRGP2ZU2YOY6Y5","created_at":"2026-05-18T12:32:08Z"},{"alias_kind":"pith_short_8","alias_value":"67FRGP2Z","created_at":"2026-05-18T12:32:08Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:67FRGP2ZU2YOY6Y5QYWVMQSUYB","target":"record","payload":{"canonical_record":{"source":{"id":"1807.09944","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DL","submitted_at":"2018-07-26T03:44:42Z","cross_cats_sorted":[],"title_canon_sha256":"baef2628da540408f72be99bd7005ae9168db456b25474abe71c8ef603d81abb","abstract_canon_sha256":"bccec944ab7051f024f29546baeb07c60099b161ecc009c6896d7892dd6d42ed"},"schema_version":"1.0"},"canonical_sha256":"f7cb133f59a6b0ec7b1d862d564254c045e55cf5f59cdefebafb86362e5d2e7a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:07:49.001132Z","signature_b64":"4v7SGNcQjytGIKrqkWC18OsCX1uGRfpUhRvOOgqdMSArNcA1uugz40Aq6utrOwI3E4GeVPsM40DBxFGF4/r9DQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f7cb133f59a6b0ec7b1d862d564254c045e55cf5f59cdefebafb86362e5d2e7a","last_reissued_at":"2026-05-18T00:07:49.000508Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:07:49.000508Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1807.09944","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":"2026-05-18T00:07:49Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"CUsTNAOjnLHTQAYL067vy1HrJaLDNr74V0FoJ7lqqBinTDDiCPmVAzylb/v7hyjfeZRvDMj7ooWhja4/ZX7DCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T23:27:24.147162Z"},"content_sha256":"6d1a82b37ab741390899158701e1f094af2f79a48ca798081c09277297270df2","schema_version":"1.0","event_id":"sha256:6d1a82b37ab741390899158701e1f094af2f79a48ca798081c09277297270df2"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:67FRGP2ZU2YOY6Y5QYWVMQSUYB","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Missing author address information in Web of Science-An explorative study","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.DL","authors_text":"Guangyuan Hu, Li Tang, Weishu Liu","submitted_at":"2018-07-26T03:44:42Z","abstract_excerpt":"Bibliometric analysis is increasingly used to evaluate and compare research performance across geographical regions. However, the problem of missing information from author addresses has not attracted sufficient attention from scholars and practitioners. This study probes the missing data problem in the three core journal citation databases of Web of Science (WoS). Our findings reveal that from 1900 to 2015 over one-fifth of the publications indexed in WoS have completely missing information from the address field. The magnitude of the problem varies greatly among time periods, citation databa"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1807.09944","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":"2026-05-18T00:07:49Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5FZIU1Jjh4Sa6b9ic6ywqsPOKrEByqzjMxWElI3dsYkzaJ/KJGREA/AA//e7Z6wTlpKEfR7MaoTzerigfu9uBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T23:27:24.147632Z"},"content_sha256":"798c4275283af634a41729d1b444fc799fe71a122685cd216b7b46c16dd7559e","schema_version":"1.0","event_id":"sha256:798c4275283af634a41729d1b444fc799fe71a122685cd216b7b46c16dd7559e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/67FRGP2ZU2YOY6Y5QYWVMQSUYB/bundle.json","state_url":"https://pith.science/pith/67FRGP2ZU2YOY6Y5QYWVMQSUYB/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/67FRGP2ZU2YOY6Y5QYWVMQSUYB/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":"2026-05-26T23:27:24Z","links":{"resolver":"https://pith.science/pith/67FRGP2ZU2YOY6Y5QYWVMQSUYB","bundle":"https://pith.science/pith/67FRGP2ZU2YOY6Y5QYWVMQSUYB/bundle.json","state":"https://pith.science/pith/67FRGP2ZU2YOY6Y5QYWVMQSUYB/state.json","well_known_bundle":"https://pith.science/.well-known/pith/67FRGP2ZU2YOY6Y5QYWVMQSUYB/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:67FRGP2ZU2YOY6Y5QYWVMQSUYB","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":"bccec944ab7051f024f29546baeb07c60099b161ecc009c6896d7892dd6d42ed","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DL","submitted_at":"2018-07-26T03:44:42Z","title_canon_sha256":"baef2628da540408f72be99bd7005ae9168db456b25474abe71c8ef603d81abb"},"schema_version":"1.0","source":{"id":"1807.09944","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1807.09944","created_at":"2026-05-18T00:07:49Z"},{"alias_kind":"arxiv_version","alias_value":"1807.09944v1","created_at":"2026-05-18T00:07:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1807.09944","created_at":"2026-05-18T00:07:49Z"},{"alias_kind":"pith_short_12","alias_value":"67FRGP2ZU2YO","created_at":"2026-05-18T12:32:08Z"},{"alias_kind":"pith_short_16","alias_value":"67FRGP2ZU2YOY6Y5","created_at":"2026-05-18T12:32:08Z"},{"alias_kind":"pith_short_8","alias_value":"67FRGP2Z","created_at":"2026-05-18T12:32:08Z"}],"graph_snapshots":[{"event_id":"sha256:798c4275283af634a41729d1b444fc799fe71a122685cd216b7b46c16dd7559e","target":"graph","created_at":"2026-05-18T00:07:49Z","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":"Bibliometric analysis is increasingly used to evaluate and compare research performance across geographical regions. However, the problem of missing information from author addresses has not attracted sufficient attention from scholars and practitioners. This study probes the missing data problem in the three core journal citation databases of Web of Science (WoS). Our findings reveal that from 1900 to 2015 over one-fifth of the publications indexed in WoS have completely missing information from the address field. The magnitude of the problem varies greatly among time periods, citation databa","authors_text":"Guangyuan Hu, Li Tang, Weishu Liu","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DL","submitted_at":"2018-07-26T03:44:42Z","title":"Missing author address information in Web of Science-An explorative study"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1807.09944","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":"sha256:6d1a82b37ab741390899158701e1f094af2f79a48ca798081c09277297270df2","target":"record","created_at":"2026-05-18T00:07:49Z","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":"bccec944ab7051f024f29546baeb07c60099b161ecc009c6896d7892dd6d42ed","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DL","submitted_at":"2018-07-26T03:44:42Z","title_canon_sha256":"baef2628da540408f72be99bd7005ae9168db456b25474abe71c8ef603d81abb"},"schema_version":"1.0","source":{"id":"1807.09944","kind":"arxiv","version":1}},"canonical_sha256":"f7cb133f59a6b0ec7b1d862d564254c045e55cf5f59cdefebafb86362e5d2e7a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f7cb133f59a6b0ec7b1d862d564254c045e55cf5f59cdefebafb86362e5d2e7a","first_computed_at":"2026-05-18T00:07:49.000508Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:07:49.000508Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"4v7SGNcQjytGIKrqkWC18OsCX1uGRfpUhRvOOgqdMSArNcA1uugz40Aq6utrOwI3E4GeVPsM40DBxFGF4/r9DQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:07:49.001132Z","signed_message":"canonical_sha256_bytes"},"source_id":"1807.09944","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6d1a82b37ab741390899158701e1f094af2f79a48ca798081c09277297270df2","sha256:798c4275283af634a41729d1b444fc799fe71a122685cd216b7b46c16dd7559e"],"state_sha256":"81493056f150fbcc0f149f10282fed86a94c9b0439c7ae588a0e5adf7cb41bdb"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"i+LPYmLbI2r0H9o4Piy0upcLS16Ta/J5Mh6g2Zur4V6kse9YU2L8sbzbO09pA3hGIIw8uKuzX1m5lfzzisrGBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T23:27:24.150914Z","bundle_sha256":"92d6a7c747edc9c95bee56d6c5008feabc379c3f1720c8a24b9d05b4a50b7b21"}}