{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:PULPRQAWIIL3HLLQL5DH5OULRY","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":"dc52fe6c55c2335fa81f246bbe6cd2733195f5b1cca18da27d2672246d5aa2bd","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DL","submitted_at":"2012-05-03T10:12:57Z","title_canon_sha256":"c213bb1699e3289d075c487d60e55a0d2724b65ca7fbb46862c85451da5f7ee4"},"schema_version":"1.0","source":{"id":"1205.0668","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1205.0668","created_at":"2026-05-18T03:53:19Z"},{"alias_kind":"arxiv_version","alias_value":"1205.0668v2","created_at":"2026-05-18T03:53:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1205.0668","created_at":"2026-05-18T03:53:19Z"},{"alias_kind":"pith_short_12","alias_value":"PULPRQAWIIL3","created_at":"2026-05-18T12:27:18Z"},{"alias_kind":"pith_short_16","alias_value":"PULPRQAWIIL3HLLQ","created_at":"2026-05-18T12:27:18Z"},{"alias_kind":"pith_short_8","alias_value":"PULPRQAW","created_at":"2026-05-18T12:27:18Z"}],"graph_snapshots":[{"event_id":"sha256:6c50fb49b9e2ed1f79b77552bba3ecbb09cb29d643eb6e531256eb8046cae348","target":"graph","created_at":"2026-05-18T03:53:19Z","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":"Using the CD-ROM version of the Science Citation Index 2010 (N = 3,705 journals), we study the (combined) effects of (i) fractional counting on the impact factor (IF) and (ii) transformation of the skewed citation distributions into a distribution of 100 percentiles and six percentile rank classes (top-1%, top-5%, etc.). Do these approaches lead to field-normalized impact measures for journals? In addition to the two-year IF (IF2), we consider the five-year IF (IF5), the respective numerators of these IFs, and the number of Total Cites, counted both as integers and fractionally. These various ","authors_text":"Loet Leydesdorff, Lutz Bornmann, Ping Zhou","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DL","submitted_at":"2012-05-03T10:12:57Z","title":"How Can Journal Impact Factors be Normalized across Fields of Science? An Assessment in terms of Percentile Ranks and Fractional Counts"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1205.0668","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":"sha256:54c570e2899167af5808fe34e462c336c7d4a4ffbca7af39f70fea7a1735aba5","target":"record","created_at":"2026-05-18T03:53:19Z","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":"dc52fe6c55c2335fa81f246bbe6cd2733195f5b1cca18da27d2672246d5aa2bd","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DL","submitted_at":"2012-05-03T10:12:57Z","title_canon_sha256":"c213bb1699e3289d075c487d60e55a0d2724b65ca7fbb46862c85451da5f7ee4"},"schema_version":"1.0","source":{"id":"1205.0668","kind":"arxiv","version":2}},"canonical_sha256":"7d16f8c0164217b3ad705f467eba8b8e12b88f2889e0323330bff0da5a4e5b67","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7d16f8c0164217b3ad705f467eba8b8e12b88f2889e0323330bff0da5a4e5b67","first_computed_at":"2026-05-18T03:53:19.659893Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:53:19.659893Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Kf2heeB5H9DPfRGxnvyq2YXTBjehSlx1OuWMYFzY1/IPe70ybKUidWY+u3KEr6IhghETNdK+U7FLqJZsGrI8AA==","signature_status":"signed_v1","signed_at":"2026-05-18T03:53:19.660736Z","signed_message":"canonical_sha256_bytes"},"source_id":"1205.0668","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:54c570e2899167af5808fe34e462c336c7d4a4ffbca7af39f70fea7a1735aba5","sha256:6c50fb49b9e2ed1f79b77552bba3ecbb09cb29d643eb6e531256eb8046cae348"],"state_sha256":"3d9ac4b2fe326cc7fdefecf37f668f17b4d6ba2793c9160cdc087a61acf37c49"}