{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:ZMVXUIZWFIPSJSYRSUD2QKJTJN","short_pith_number":"pith:ZMVXUIZW","canonical_record":{"source":{"id":"1404.7595","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"stat.ME","submitted_at":"2014-04-30T05:43:03Z","cross_cats_sorted":[],"title_canon_sha256":"a8f23805477e9e94cd015e9d396bed3faa795ff26820f359bb9d89a6618fa86b","abstract_canon_sha256":"11ed3a3f24f663d3af25d812246fcdb1343f53af9639097733d0d12d16c9d877"},"schema_version":"1.0"},"canonical_sha256":"cb2b7a23362a1f24cb119507a829334b4769842c2b85c9a489f01b1aabdd1c69","source":{"kind":"arxiv","id":"1404.7595","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1404.7595","created_at":"2026-05-18T02:52:55Z"},{"alias_kind":"arxiv_version","alias_value":"1404.7595v1","created_at":"2026-05-18T02:52:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1404.7595","created_at":"2026-05-18T02:52:55Z"},{"alias_kind":"pith_short_12","alias_value":"ZMVXUIZWFIPS","created_at":"2026-05-18T12:28:59Z"},{"alias_kind":"pith_short_16","alias_value":"ZMVXUIZWFIPSJSYR","created_at":"2026-05-18T12:28:59Z"},{"alias_kind":"pith_short_8","alias_value":"ZMVXUIZW","created_at":"2026-05-18T12:28:59Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:ZMVXUIZWFIPSJSYRSUD2QKJTJN","target":"record","payload":{"canonical_record":{"source":{"id":"1404.7595","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"stat.ME","submitted_at":"2014-04-30T05:43:03Z","cross_cats_sorted":[],"title_canon_sha256":"a8f23805477e9e94cd015e9d396bed3faa795ff26820f359bb9d89a6618fa86b","abstract_canon_sha256":"11ed3a3f24f663d3af25d812246fcdb1343f53af9639097733d0d12d16c9d877"},"schema_version":"1.0"},"canonical_sha256":"cb2b7a23362a1f24cb119507a829334b4769842c2b85c9a489f01b1aabdd1c69","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:52:55.253762Z","signature_b64":"teOD78ruNaZc+Mu/dh67s6+hBdyQoJBFBt+BlGzF4ac0NnxbtAdWbZmRBfxgSBro0uveJRGOCVx1ZubkqOMYBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"cb2b7a23362a1f24cb119507a829334b4769842c2b85c9a489f01b1aabdd1c69","last_reissued_at":"2026-05-18T02:52:55.253047Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:52:55.253047Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1404.7595","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":"2026-05-18T02:52:55Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"P7NKi55RJJ5UXXBXcZG9JIQ/BVNSmLOzH2EEmNaBHcAwdCtFlHAJfAZtrmOrqkVZpgvfjO6iMjs9i26V/VL/Cg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-27T05:16:37.348827Z"},"content_sha256":"2d5c31cfcd87881a97f707e7927435fae8fc9eff3a5693d3e6d127b5b157ddad","schema_version":"1.0","event_id":"sha256:2d5c31cfcd87881a97f707e7927435fae8fc9eff3a5693d3e6d127b5b157ddad"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:ZMVXUIZWFIPSJSYRSUD2QKJTJN","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A Quantile Regression Model for Failure-Time Data with Time-Dependent Covariates","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"stat.ME","authors_text":"Malka Gorfine, Yaacov Ritov, Yair Goldberg","submitted_at":"2014-04-30T05:43:03Z","abstract_excerpt":"Since survival data occur over time, often important covariates that we wish to consider also change over time. Such covariates are referred as time-dependent covariates. Quantile regression offers flexible modeling of survival data by allowing the covariates to vary with quantiles. This paper provides a novel quantile regression model accommodating time-dependent covariates, for analyzing survival data subject to right censoring. Our simple estimation technique assumes the existence of instrumental variables. In addition, we present a doubly-robust estimator in the sense of Robins and Rotnitz"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1404.7595","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":""},"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":"2026-05-18T02:52:55Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hnvSliFxzFjrLSmlHDC3+ho1iYoUrYTgP1IA4LEQaTyQySit+Qm6rXc4drehpUD9U47WGuAcQKuJ+PGyw+N7Dg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-27T05:16:37.349170Z"},"content_sha256":"c0b5e6bbbd40484085486eec37249a68c82ba4b0ca9ed5be29f6fa2e090de326","schema_version":"1.0","event_id":"sha256:c0b5e6bbbd40484085486eec37249a68c82ba4b0ca9ed5be29f6fa2e090de326"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ZMVXUIZWFIPSJSYRSUD2QKJTJN/bundle.json","state_url":"https://pith.science/pith/ZMVXUIZWFIPSJSYRSUD2QKJTJN/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ZMVXUIZWFIPSJSYRSUD2QKJTJN/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":"2026-06-27T05:16:37Z","links":{"resolver":"https://pith.science/pith/ZMVXUIZWFIPSJSYRSUD2QKJTJN","bundle":"https://pith.science/pith/ZMVXUIZWFIPSJSYRSUD2QKJTJN/bundle.json","state":"https://pith.science/pith/ZMVXUIZWFIPSJSYRSUD2QKJTJN/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ZMVXUIZWFIPSJSYRSUD2QKJTJN/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:ZMVXUIZWFIPSJSYRSUD2QKJTJN","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":"11ed3a3f24f663d3af25d812246fcdb1343f53af9639097733d0d12d16c9d877","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"stat.ME","submitted_at":"2014-04-30T05:43:03Z","title_canon_sha256":"a8f23805477e9e94cd015e9d396bed3faa795ff26820f359bb9d89a6618fa86b"},"schema_version":"1.0","source":{"id":"1404.7595","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1404.7595","created_at":"2026-05-18T02:52:55Z"},{"alias_kind":"arxiv_version","alias_value":"1404.7595v1","created_at":"2026-05-18T02:52:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1404.7595","created_at":"2026-05-18T02:52:55Z"},{"alias_kind":"pith_short_12","alias_value":"ZMVXUIZWFIPS","created_at":"2026-05-18T12:28:59Z"},{"alias_kind":"pith_short_16","alias_value":"ZMVXUIZWFIPSJSYR","created_at":"2026-05-18T12:28:59Z"},{"alias_kind":"pith_short_8","alias_value":"ZMVXUIZW","created_at":"2026-05-18T12:28:59Z"}],"graph_snapshots":[{"event_id":"sha256:c0b5e6bbbd40484085486eec37249a68c82ba4b0ca9ed5be29f6fa2e090de326","target":"graph","created_at":"2026-05-18T02:52:55Z","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":"Since survival data occur over time, often important covariates that we wish to consider also change over time. Such covariates are referred as time-dependent covariates. Quantile regression offers flexible modeling of survival data by allowing the covariates to vary with quantiles. This paper provides a novel quantile regression model accommodating time-dependent covariates, for analyzing survival data subject to right censoring. Our simple estimation technique assumes the existence of instrumental variables. In addition, we present a doubly-robust estimator in the sense of Robins and Rotnitz","authors_text":"Malka Gorfine, Yaacov Ritov, Yair Goldberg","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"stat.ME","submitted_at":"2014-04-30T05:43:03Z","title":"A Quantile Regression Model for Failure-Time Data with Time-Dependent Covariates"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1404.7595","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":"sha256:2d5c31cfcd87881a97f707e7927435fae8fc9eff3a5693d3e6d127b5b157ddad","target":"record","created_at":"2026-05-18T02:52:55Z","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":"11ed3a3f24f663d3af25d812246fcdb1343f53af9639097733d0d12d16c9d877","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"stat.ME","submitted_at":"2014-04-30T05:43:03Z","title_canon_sha256":"a8f23805477e9e94cd015e9d396bed3faa795ff26820f359bb9d89a6618fa86b"},"schema_version":"1.0","source":{"id":"1404.7595","kind":"arxiv","version":1}},"canonical_sha256":"cb2b7a23362a1f24cb119507a829334b4769842c2b85c9a489f01b1aabdd1c69","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"cb2b7a23362a1f24cb119507a829334b4769842c2b85c9a489f01b1aabdd1c69","first_computed_at":"2026-05-18T02:52:55.253047Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:52:55.253047Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"teOD78ruNaZc+Mu/dh67s6+hBdyQoJBFBt+BlGzF4ac0NnxbtAdWbZmRBfxgSBro0uveJRGOCVx1ZubkqOMYBw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:52:55.253762Z","signed_message":"canonical_sha256_bytes"},"source_id":"1404.7595","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2d5c31cfcd87881a97f707e7927435fae8fc9eff3a5693d3e6d127b5b157ddad","sha256:c0b5e6bbbd40484085486eec37249a68c82ba4b0ca9ed5be29f6fa2e090de326"],"state_sha256":"11af87758a6368c0d151cb9032299fed0327b555f61ac1add6d97156309706ea"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"meJzSPMhwNYmgnmu58fZ7vccTNzuearSHDLzFcV5JR0+LxvPxrwzLLImZ3uiQIi3BWcXXhg+9vEZI30hokhaCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-27T05:16:37.351284Z","bundle_sha256":"ebbb2f6a1fbde0ed729e552959d9530bd85f4b9c92bb6e48cc0b06ebba1d3e44"}}