{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:UC3G2QOIJ5FAFZEDXXX6PTIZ3N","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":"62ebb779dfbf1d5d5d5d85693c2c394dbdd65518a2d03ada6b899e41ad37b867","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CL","submitted_at":"2026-06-22T14:19:57Z","title_canon_sha256":"9808e9170a2dfa3b59955cceb61240b67f2464e36e1a5086c19cac7f73f90b1b"},"schema_version":"1.0","source":{"id":"2606.23394","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.23394","created_at":"2026-06-23T03:14:18Z"},{"alias_kind":"arxiv_version","alias_value":"2606.23394v1","created_at":"2026-06-23T03:14:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.23394","created_at":"2026-06-23T03:14:18Z"},{"alias_kind":"pith_short_12","alias_value":"UC3G2QOIJ5FA","created_at":"2026-06-23T03:14:18Z"},{"alias_kind":"pith_short_16","alias_value":"UC3G2QOIJ5FAFZED","created_at":"2026-06-23T03:14:18Z"},{"alias_kind":"pith_short_8","alias_value":"UC3G2QOI","created_at":"2026-06-23T03:14:18Z"}],"graph_snapshots":[{"event_id":"sha256:2d7a147278d8b1f3d94e3b2fe86cdac9aae291a427123dd51605ab30d8904fb9","target":"graph","created_at":"2026-06-23T03:14:18Z","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/2606.23394/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Pretrained text embeddings are increasingly used as representational maps, yet high category separability does not imply that their geometry recovers expert-defined structure. We study this problem in mental-health-related language, where symptom relations provide an external reference and online communities introduce strong domain, affective, stylistic, and discourse confounds. Using 28 Reddit communities, we compare pretrained and supervised fine-tuned Qwen3 embedding spaces at two scales (0.6B and 4B). We construct category prototypes, evaluate their representational dissimilarity matrices ","authors_text":"Fanghen Li, Yixuan Zhu, Zhenke Duan","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CL","submitted_at":"2026-06-22T14:19:57Z","title":"Do LLM Embedding Spaces Recover Expert Structure?"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.23394","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:abc2e4ce2b274c553a7a68a23619bbd8e0f492cf5bc92389980caf9082150406","target":"record","created_at":"2026-06-23T03:14:18Z","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":"62ebb779dfbf1d5d5d5d85693c2c394dbdd65518a2d03ada6b899e41ad37b867","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CL","submitted_at":"2026-06-22T14:19:57Z","title_canon_sha256":"9808e9170a2dfa3b59955cceb61240b67f2464e36e1a5086c19cac7f73f90b1b"},"schema_version":"1.0","source":{"id":"2606.23394","kind":"arxiv","version":1}},"canonical_sha256":"a0b66d41c84f4a02e483bdefe7cd19db76e2c73814c98f0a48645225df9dc1ab","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a0b66d41c84f4a02e483bdefe7cd19db76e2c73814c98f0a48645225df9dc1ab","first_computed_at":"2026-06-23T03:14:18.839902Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-06-23T03:14:18.839902Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"tvaFHROI6WQg5UqlEMCTrxVaFiTzm3qj8S9qZeoBVJlSThMfgURicolKgbfkqcIRH4Rdn4mq7CL7SLHJW0acDQ==","signature_status":"signed_v1","signed_at":"2026-06-23T03:14:18.840330Z","signed_message":"canonical_sha256_bytes"},"source_id":"2606.23394","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:abc2e4ce2b274c553a7a68a23619bbd8e0f492cf5bc92389980caf9082150406","sha256:2d7a147278d8b1f3d94e3b2fe86cdac9aae291a427123dd51605ab30d8904fb9"],"state_sha256":"0d20ef26993bb93a38ffc986833088846ff54cbe4c863f063f61660dce0edfe0"}