{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:AZR7WWYTK5W67RWJ4CMJL7RS2E","short_pith_number":"pith:AZR7WWYT","canonical_record":{"source":{"id":"2606.10198","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.LG","submitted_at":"2026-06-08T21:36:12Z","cross_cats_sorted":["cs.AI","cs.CV"],"title_canon_sha256":"8c9302fc4fc9b42a6316cc5a177c2c018bf98240a7779ae52e54c4ca4754bdcb","abstract_canon_sha256":"996642dfef3e2e2bd528659e00caefb2aa57f81882db341fe6eba72c4dace947"},"schema_version":"1.0"},"canonical_sha256":"0663fb5b13576defc6c9e09895fe32d1236e8bd2537b81e22fe7353908fefb32","source":{"kind":"arxiv","id":"2606.10198","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.10198","created_at":"2026-06-10T01:08:59Z"},{"alias_kind":"arxiv_version","alias_value":"2606.10198v1","created_at":"2026-06-10T01:08:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.10198","created_at":"2026-06-10T01:08:59Z"},{"alias_kind":"pith_short_12","alias_value":"AZR7WWYTK5W6","created_at":"2026-06-10T01:08:59Z"},{"alias_kind":"pith_short_16","alias_value":"AZR7WWYTK5W67RWJ","created_at":"2026-06-10T01:08:59Z"},{"alias_kind":"pith_short_8","alias_value":"AZR7WWYT","created_at":"2026-06-10T01:08:59Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:AZR7WWYTK5W67RWJ4CMJL7RS2E","target":"record","payload":{"canonical_record":{"source":{"id":"2606.10198","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.LG","submitted_at":"2026-06-08T21:36:12Z","cross_cats_sorted":["cs.AI","cs.CV"],"title_canon_sha256":"8c9302fc4fc9b42a6316cc5a177c2c018bf98240a7779ae52e54c4ca4754bdcb","abstract_canon_sha256":"996642dfef3e2e2bd528659e00caefb2aa57f81882db341fe6eba72c4dace947"},"schema_version":"1.0"},"canonical_sha256":"0663fb5b13576defc6c9e09895fe32d1236e8bd2537b81e22fe7353908fefb32","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-06-10T01:08:59.101676Z","signature_b64":"+UXIPeZ6o7FkXQIlfqWNEsRyqJ2dG+v+837XOGJh5yy/T7w5ev/Z715mWKyKlrfTie/gE693mzpsibO+BS6GDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"0663fb5b13576defc6c9e09895fe32d1236e8bd2537b81e22fe7353908fefb32","last_reissued_at":"2026-06-10T01:08:59.100812Z","signature_status":"signed_v1","first_computed_at":"2026-06-10T01:08:59.100812Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2606.10198","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":"2026-06-10T01:08:59Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4LQrtCKCfVlYfccqKzh2Gk0oEIdXAhFSvQs998BEZoOMIFJQCyXnqXj8PItuFPpXIo0T+D0Sy5ZpvqbbQjSrCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-18T00:28:03.814078Z"},"content_sha256":"69f80ec8a9db528b4cd99b4b8512c55bd081fcaf26edff32c29f3bccae336a71","schema_version":"1.0","event_id":"sha256:69f80ec8a9db528b4cd99b4b8512c55bd081fcaf26edff32c29f3bccae336a71"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:AZR7WWYTK5W67RWJ4CMJL7RS2E","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Density Ridge Selective Prediction for LLM and VLM Hallucination Detection under Calibration Label Scarcity","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["cs.AI","cs.CV"],"primary_cat":"cs.LG","authors_text":"Nina I. Shamsi","submitted_at":"2026-06-08T21:36:12Z","abstract_excerpt":"Hallucination detection in large language and vision-language models is increasingly framed as selective prediction, where a detector assigns a confidence score and abstains when confidence is low. Unsupervised sampling detectors (Semantic Entropy, EigenScore) avoid labels but plateau in quality, while supervised probes (SAPLMA) attain stronger in-distribution scores yet degrade sharply when calibration labels are scarce. We recover the response manifold of an LLM as the density ridge of a kernel density estimate built on a six-dimensional kinematic feature map of hidden state generation traje"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.10198","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2606.10198/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-06-10T01:08:59Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"UpWR790DYqke8TingfesyWVS7xGXgaRzWa/q6vo4e9PNXg+WWTBk/w75Dv9frT10gXJJGmf9EnbKP4tVmCIWDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-18T00:28:03.814704Z"},"content_sha256":"739cf8786effab7e39c28bbb1768ab4eb446ba35a2c627b1660ee6a7c1f65068","schema_version":"1.0","event_id":"sha256:739cf8786effab7e39c28bbb1768ab4eb446ba35a2c627b1660ee6a7c1f65068"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/AZR7WWYTK5W67RWJ4CMJL7RS2E/bundle.json","state_url":"https://pith.science/pith/AZR7WWYTK5W67RWJ4CMJL7RS2E/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/AZR7WWYTK5W67RWJ4CMJL7RS2E/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":"2026-08-18T00:28:03Z","links":{"resolver":"https://pith.science/pith/AZR7WWYTK5W67RWJ4CMJL7RS2E","bundle":"https://pith.science/pith/AZR7WWYTK5W67RWJ4CMJL7RS2E/bundle.json","state":"https://pith.science/pith/AZR7WWYTK5W67RWJ4CMJL7RS2E/state.json","well_known_bundle":"https://pith.science/.well-known/pith/AZR7WWYTK5W67RWJ4CMJL7RS2E/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:AZR7WWYTK5W67RWJ4CMJL7RS2E","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":"996642dfef3e2e2bd528659e00caefb2aa57f81882db341fe6eba72c4dace947","cross_cats_sorted":["cs.AI","cs.CV"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.LG","submitted_at":"2026-06-08T21:36:12Z","title_canon_sha256":"8c9302fc4fc9b42a6316cc5a177c2c018bf98240a7779ae52e54c4ca4754bdcb"},"schema_version":"1.0","source":{"id":"2606.10198","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.10198","created_at":"2026-06-10T01:08:59Z"},{"alias_kind":"arxiv_version","alias_value":"2606.10198v1","created_at":"2026-06-10T01:08:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.10198","created_at":"2026-06-10T01:08:59Z"},{"alias_kind":"pith_short_12","alias_value":"AZR7WWYTK5W6","created_at":"2026-06-10T01:08:59Z"},{"alias_kind":"pith_short_16","alias_value":"AZR7WWYTK5W67RWJ","created_at":"2026-06-10T01:08:59Z"},{"alias_kind":"pith_short_8","alias_value":"AZR7WWYT","created_at":"2026-06-10T01:08:59Z"}],"graph_snapshots":[{"event_id":"sha256:739cf8786effab7e39c28bbb1768ab4eb446ba35a2c627b1660ee6a7c1f65068","target":"graph","created_at":"2026-06-10T01:08:59Z","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/2606.10198/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Hallucination detection in large language and vision-language models is increasingly framed as selective prediction, where a detector assigns a confidence score and abstains when confidence is low. Unsupervised sampling detectors (Semantic Entropy, EigenScore) avoid labels but plateau in quality, while supervised probes (SAPLMA) attain stronger in-distribution scores yet degrade sharply when calibration labels are scarce. We recover the response manifold of an LLM as the density ridge of a kernel density estimate built on a six-dimensional kinematic feature map of hidden state generation traje","authors_text":"Nina I. Shamsi","cross_cats":["cs.AI","cs.CV"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.LG","submitted_at":"2026-06-08T21:36:12Z","title":"Density Ridge Selective Prediction for LLM and VLM Hallucination Detection under Calibration Label Scarcity"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.10198","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":"sha256:69f80ec8a9db528b4cd99b4b8512c55bd081fcaf26edff32c29f3bccae336a71","target":"record","created_at":"2026-06-10T01:08:59Z","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":"996642dfef3e2e2bd528659e00caefb2aa57f81882db341fe6eba72c4dace947","cross_cats_sorted":["cs.AI","cs.CV"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.LG","submitted_at":"2026-06-08T21:36:12Z","title_canon_sha256":"8c9302fc4fc9b42a6316cc5a177c2c018bf98240a7779ae52e54c4ca4754bdcb"},"schema_version":"1.0","source":{"id":"2606.10198","kind":"arxiv","version":1}},"canonical_sha256":"0663fb5b13576defc6c9e09895fe32d1236e8bd2537b81e22fe7353908fefb32","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0663fb5b13576defc6c9e09895fe32d1236e8bd2537b81e22fe7353908fefb32","first_computed_at":"2026-06-10T01:08:59.100812Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-06-10T01:08:59.100812Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"+UXIPeZ6o7FkXQIlfqWNEsRyqJ2dG+v+837XOGJh5yy/T7w5ev/Z715mWKyKlrfTie/gE693mzpsibO+BS6GDw==","signature_status":"signed_v1","signed_at":"2026-06-10T01:08:59.101676Z","signed_message":"canonical_sha256_bytes"},"source_id":"2606.10198","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:69f80ec8a9db528b4cd99b4b8512c55bd081fcaf26edff32c29f3bccae336a71","sha256:739cf8786effab7e39c28bbb1768ab4eb446ba35a2c627b1660ee6a7c1f65068"],"state_sha256":"324fcfb229e16f230a2db7ef61472517a886fab081f35ed18560d1d2a9a714d4"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"aimJNq9y2KD2x1f8VOTLfkN5AGxOe/xerCwueK6Udnh5vALBe7AkGRyiGUdVg6Ynt9u/2ujP2/ODY2i0/tjGDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-18T00:28:03.818627Z","bundle_sha256":"16e4a1ff8946ff2b750be08c65a1601bf9e5c67900c8589920c5dca20e656091"}}