{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:VWKEUBJGEQZPWSENO3W5226LOF","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":"f92e2e6d6d82fbb05cd8987dbb60aa4928d45760c1547100efb905f00b3551d0","cross_cats_sorted":["cs.AI","cs.LG"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CL","submitted_at":"2026-05-19T00:47:02Z","title_canon_sha256":"8e1396cbad24fcec4f9e52da78afab146192632f42f7dd33d24d9f630e8b0b01"},"schema_version":"1.0","source":{"id":"2605.19220","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2605.19220","created_at":"2026-05-20T01:05:34Z"},{"alias_kind":"arxiv_version","alias_value":"2605.19220v1","created_at":"2026-05-20T01:05:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2605.19220","created_at":"2026-05-20T01:05:34Z"},{"alias_kind":"pith_short_12","alias_value":"VWKEUBJGEQZP","created_at":"2026-05-20T01:05:34Z"},{"alias_kind":"pith_short_16","alias_value":"VWKEUBJGEQZPWSEN","created_at":"2026-05-20T01:05:34Z"},{"alias_kind":"pith_short_8","alias_value":"VWKEUBJG","created_at":"2026-05-20T01:05:34Z"}],"graph_snapshots":[{"event_id":"sha256:4e7a092bdda39336cb84203ec50ec530a7aea18c21cdc807207fd96a35feac51","target":"graph","created_at":"2026-05-20T01:05:34Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2605.19220/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Uncertainty Quantification (UQ) is widely regarded as the primary safeguard for deploying Large Language Models (LLMs) in high-stakes domains. However, we argue that the field suffers from a category error: mainstream UQ methods for LLMs are just unsupervised clustering algorithms. We demonstrate that most current approaches inherently quantify the internal consistency of the model's generations rather than their external correctness. Consequently, current methods are fundamentally blind to factual reality and fail to detect ``confident hallucinations,'' where models exhibit high confidence in","authors_text":"Hua Wei, Longchao Da, Tiejin Chen, Xiaoou Liu","cross_cats":["cs.AI","cs.LG"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CL","submitted_at":"2026-05-19T00:47:02Z","title":"Position: Uncertainty Quantification in LLMs is Just Unsupervised Clustering"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2605.19220","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":"sha256:570b08452d636913a179b77471479e1796cb1c41e0f5ad9bbc04f105979ceaa3","target":"record","created_at":"2026-05-20T01:05:34Z","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":"f92e2e6d6d82fbb05cd8987dbb60aa4928d45760c1547100efb905f00b3551d0","cross_cats_sorted":["cs.AI","cs.LG"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CL","submitted_at":"2026-05-19T00:47:02Z","title_canon_sha256":"8e1396cbad24fcec4f9e52da78afab146192632f42f7dd33d24d9f630e8b0b01"},"schema_version":"1.0","source":{"id":"2605.19220","kind":"arxiv","version":1}},"canonical_sha256":"ad944a05262432fb488d76eddd6bcb716555d2d399d36095642419f6880392b8","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ad944a05262432fb488d76eddd6bcb716555d2d399d36095642419f6880392b8","first_computed_at":"2026-05-20T01:05:34.236557Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-20T01:05:34.236557Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"vxVa4xtQADxRcu5txaZyFV22CQgYav8rVBPJxjT+eXv7I/S1M7mS7Pfl9z6l7yULR9j2Ips0JcIl5012jiKYAA==","signature_status":"signed_v1","signed_at":"2026-05-20T01:05:34.237308Z","signed_message":"canonical_sha256_bytes"},"source_id":"2605.19220","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:570b08452d636913a179b77471479e1796cb1c41e0f5ad9bbc04f105979ceaa3","sha256:4e7a092bdda39336cb84203ec50ec530a7aea18c21cdc807207fd96a35feac51"],"state_sha256":"f7589581b36fa81007395394b6dad65bde879c0b9274a89285e7fce53438c0ca"}