{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:RKV3XPKBSUTWR6RCCWPDP4BSFK","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":"5724bd30c72ca7d1b15352d9ddd5c8484d4d4bd303ffa4c2f1bdfbd5c617bb0b","cross_cats_sorted":["stat.AP","stat.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"stat.ME","submitted_at":"2015-12-10T18:03:54Z","title_canon_sha256":"2b8a1593fe5ec5c72b7c8f6dbac724482898967dd3f1e5dd80813317ad9244a4"},"schema_version":"1.0","source":{"id":"1512.03350","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1512.03350","created_at":"2026-05-18T00:24:31Z"},{"alias_kind":"arxiv_version","alias_value":"1512.03350v2","created_at":"2026-05-18T00:24:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1512.03350","created_at":"2026-05-18T00:24:31Z"},{"alias_kind":"pith_short_12","alias_value":"RKV3XPKBSUTW","created_at":"2026-05-18T12:29:39Z"},{"alias_kind":"pith_short_16","alias_value":"RKV3XPKBSUTWR6RC","created_at":"2026-05-18T12:29:39Z"},{"alias_kind":"pith_short_8","alias_value":"RKV3XPKB","created_at":"2026-05-18T12:29:39Z"}],"graph_snapshots":[{"event_id":"sha256:6829f51ba6409779c674f26bca07b4aca93987c495f39b3691d0fee7cb787fc7","target":"graph","created_at":"2026-05-18T00:24:31Z","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":"The identification of most relevant clinical criteria related to low back pain disorders may aid the evaluation of the nature of pain suffered in a way that usefully informs patient assessment and treatment. Data concerning low back pain can be of categorical nature, in the form of a check-list in which each item denotes presence or absence of a clinical condition. Latent class analysis is a model-based clustering method for multivariate categorical responses, which can be applied to such data for a preliminary diagnosis of the type of pain. In this work, we propose a variable selection method","authors_text":"Keith Smart, Michael Fop, Thomas Brendan Murphy","cross_cats":["stat.AP","stat.CO"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"stat.ME","submitted_at":"2015-12-10T18:03:54Z","title":"Variable Selection for Latent Class Analysis with Application to Low Back Pain Diagnosis"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1512.03350","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":"sha256:74fd505e4095b37a03048ef64e211b7b9cfa59465f4ee8d260a7e9acac4d9e98","target":"record","created_at":"2026-05-18T00:24:31Z","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":"5724bd30c72ca7d1b15352d9ddd5c8484d4d4bd303ffa4c2f1bdfbd5c617bb0b","cross_cats_sorted":["stat.AP","stat.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"stat.ME","submitted_at":"2015-12-10T18:03:54Z","title_canon_sha256":"2b8a1593fe5ec5c72b7c8f6dbac724482898967dd3f1e5dd80813317ad9244a4"},"schema_version":"1.0","source":{"id":"1512.03350","kind":"arxiv","version":2}},"canonical_sha256":"8aabbbbd41952768fa22159e37f0322ab10d1f296b05da8532b233ba84d5535b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8aabbbbd41952768fa22159e37f0322ab10d1f296b05da8532b233ba84d5535b","first_computed_at":"2026-05-18T00:24:31.945844Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:24:31.945844Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"17+DIr3+FmyyS/QdKjGNGtCmHMIsrgy6llSwWBIzNKyCv3hHkJAtIspuou6qDYiPy6+WtoHelkrRLVw2Jmk8BQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:24:31.946462Z","signed_message":"canonical_sha256_bytes"},"source_id":"1512.03350","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:74fd505e4095b37a03048ef64e211b7b9cfa59465f4ee8d260a7e9acac4d9e98","sha256:6829f51ba6409779c674f26bca07b4aca93987c495f39b3691d0fee7cb787fc7"],"state_sha256":"a9ae73a9e1b66a20b55f12eda4166983b7a1424089233c34772b15f43cef32a8"}