{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:U2FGRRK2B72ENXME3EAY2GMNBC","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":"5bc3430840257b5882aea8bbfa5e707e7d20b51546a0ba460b24a34233f14135","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"stat.AP","submitted_at":"2016-03-14T10:25:59Z","title_canon_sha256":"385c17517ebc4d85ad0f0d84da30bb927348f2a03e6f564080cac659df2cda6b"},"schema_version":"1.0","source":{"id":"1603.04189","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1603.04189","created_at":"2026-05-18T01:04:04Z"},{"alias_kind":"arxiv_version","alias_value":"1603.04189v2","created_at":"2026-05-18T01:04:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1603.04189","created_at":"2026-05-18T01:04:04Z"},{"alias_kind":"pith_short_12","alias_value":"U2FGRRK2B72E","created_at":"2026-05-18T12:30:46Z"},{"alias_kind":"pith_short_16","alias_value":"U2FGRRK2B72ENXME","created_at":"2026-05-18T12:30:46Z"},{"alias_kind":"pith_short_8","alias_value":"U2FGRRK2","created_at":"2026-05-18T12:30:46Z"}],"graph_snapshots":[{"event_id":"sha256:0d937cdcc72c4d34dd01534b47a3db80658a590842c1c6b073c7e8cc9d0686bc","target":"graph","created_at":"2026-05-18T01:04:04Z","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":"In this article we suggest a new statistical approach considering survival heterogeneity as a breakpoint model in an ordered sequence of time to event variables. The survival responses need to be ordered according to a numerical covariate. Our esti- mation method will aim at detecting heterogeneity that could arise through the or- dering covariate. We formally introduce our model as a constrained Hidden Markov Model (HMM) where the hidden states are the unknown segmentation (breakpoint locations) and the observed states are the survival responses. We derive an efficient Expectation-Maximizatio","authors_text":"Gr\\'egory Nuel (LPMA), Olivier Bouaziz (MAP5)","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"stat.AP","submitted_at":"2016-03-14T10:25:59Z","title":"A Change-Point Model for Detecting Heterogeneity in Ordered Survival Responses"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1603.04189","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:b5d2cc4509c54d5353df117585151e5308e499b6d2141a72d395fcb8011446d4","target":"record","created_at":"2026-05-18T01:04:04Z","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":"5bc3430840257b5882aea8bbfa5e707e7d20b51546a0ba460b24a34233f14135","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"stat.AP","submitted_at":"2016-03-14T10:25:59Z","title_canon_sha256":"385c17517ebc4d85ad0f0d84da30bb927348f2a03e6f564080cac659df2cda6b"},"schema_version":"1.0","source":{"id":"1603.04189","kind":"arxiv","version":2}},"canonical_sha256":"a68a68c55a0ff446dd84d9018d198d08a60448f22c7747767338177920072b7e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a68a68c55a0ff446dd84d9018d198d08a60448f22c7747767338177920072b7e","first_computed_at":"2026-05-18T01:04:04.029010Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:04:04.029010Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Wj1f5U6NncH26cEcRG/Jov78eT216nMtssQnhEQxpMwpXy/0WmWe5N+ShTxYZLvzAWBDR8phCkxmhAVeo4izBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:04:04.029665Z","signed_message":"canonical_sha256_bytes"},"source_id":"1603.04189","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b5d2cc4509c54d5353df117585151e5308e499b6d2141a72d395fcb8011446d4","sha256:0d937cdcc72c4d34dd01534b47a3db80658a590842c1c6b073c7e8cc9d0686bc"],"state_sha256":"6718fe489591e5cd9908b094a4e5aadffa9ccb07b3883fad166f0f0c39852853"}