{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:LJGLSVGW5WPX5OVZLYYXYOQPW3","short_pith_number":"pith:LJGLSVGW","canonical_record":{"source":{"id":"1307.8369","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.ST","submitted_at":"2013-07-31T16:03:03Z","cross_cats_sorted":["stat.TH"],"title_canon_sha256":"51f2c0fcb6d49cadb03a0be9ad0d535274badc277b293ce51ef56fa2edbf1837","abstract_canon_sha256":"a9ef43a532a6f19a3e7d73c6fbbf199165202028746524cdde22f426fdd363a9"},"schema_version":"1.0"},"canonical_sha256":"5a4cb954d6ed9f7ebab95e317c3a0fb6faf18cfb71bf7b46db70a48a9aa61d51","source":{"kind":"arxiv","id":"1307.8369","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1307.8369","created_at":"2026-05-18T03:17:01Z"},{"alias_kind":"arxiv_version","alias_value":"1307.8369v1","created_at":"2026-05-18T03:17:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1307.8369","created_at":"2026-05-18T03:17:01Z"},{"alias_kind":"pith_short_12","alias_value":"LJGLSVGW5WPX","created_at":"2026-05-18T12:27:51Z"},{"alias_kind":"pith_short_16","alias_value":"LJGLSVGW5WPX5OVZ","created_at":"2026-05-18T12:27:51Z"},{"alias_kind":"pith_short_8","alias_value":"LJGLSVGW","created_at":"2026-05-18T12:27:51Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:LJGLSVGW5WPX5OVZLYYXYOQPW3","target":"record","payload":{"canonical_record":{"source":{"id":"1307.8369","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.ST","submitted_at":"2013-07-31T16:03:03Z","cross_cats_sorted":["stat.TH"],"title_canon_sha256":"51f2c0fcb6d49cadb03a0be9ad0d535274badc277b293ce51ef56fa2edbf1837","abstract_canon_sha256":"a9ef43a532a6f19a3e7d73c6fbbf199165202028746524cdde22f426fdd363a9"},"schema_version":"1.0"},"canonical_sha256":"5a4cb954d6ed9f7ebab95e317c3a0fb6faf18cfb71bf7b46db70a48a9aa61d51","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:17:01.360752Z","signature_b64":"wAsneAN9AK4pBr2u+6GQ0OIGZ06dy2AVbm37bUl8TVjUbp5dSp1hpCeL8PQIXRwL7oR3SIdsjTonoPvm47XZDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"5a4cb954d6ed9f7ebab95e317c3a0fb6faf18cfb71bf7b46db70a48a9aa61d51","last_reissued_at":"2026-05-18T03:17:01.360097Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:17:01.360097Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1307.8369","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":"2026-05-18T03:17:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"eUHa5ULlbxIm8mBj7Ea2m/T670L8pR3wsDHrw9I5vO1OIRYes6Mm4kaNWMwUJ+3SHeUruU1nmdOBWiHKoTH8DQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T20:13:59.419557Z"},"content_sha256":"d0f212263676821c4c2ffed716c308561c9c2a6455b7c23c8033534c98b9cb2a","schema_version":"1.0","event_id":"sha256:d0f212263676821c4c2ffed716c308561c9c2a6455b7c23c8033534c98b9cb2a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:LJGLSVGW5WPX5OVZLYYXYOQPW3","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Estimating mean survival time: when is it possible?","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["stat.TH"],"primary_cat":"math.ST","authors_text":"Bin Nan, Ying Ding","submitted_at":"2013-07-31T16:03:03Z","abstract_excerpt":"For right censored survival data, it is well known that the mean survival time can be consistently estimated when the support of the censoring time contains the support of the survival time. In practice, however, this condition can be easily violated because the follow-up of a study is usually within a finite window. In this article we show that the mean survival time is still estimable from a linear model when the support of some covariate(s) with nonzero coefficient(s) is unbounded regardless of the length of follow-up. This implies that the mean survival time can be well estimated when the "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1307.8369","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":"2026-05-18T03:17:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"AMy9IBMdydRH7PeMnnW93W51PtIO/eqmZ/kp1l6ygOf2uQQv1njPm7IXi8aVWOXSDnuMId5MLhUwMwiMbjbiAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T20:13:59.420706Z"},"content_sha256":"540e6007cd93c6eb06596885a32f8f4baf82d511879fbdc15df100cf38e6bb3d","schema_version":"1.0","event_id":"sha256:540e6007cd93c6eb06596885a32f8f4baf82d511879fbdc15df100cf38e6bb3d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/LJGLSVGW5WPX5OVZLYYXYOQPW3/bundle.json","state_url":"https://pith.science/pith/LJGLSVGW5WPX5OVZLYYXYOQPW3/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/LJGLSVGW5WPX5OVZLYYXYOQPW3/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":"2026-06-05T20:13:59Z","links":{"resolver":"https://pith.science/pith/LJGLSVGW5WPX5OVZLYYXYOQPW3","bundle":"https://pith.science/pith/LJGLSVGW5WPX5OVZLYYXYOQPW3/bundle.json","state":"https://pith.science/pith/LJGLSVGW5WPX5OVZLYYXYOQPW3/state.json","well_known_bundle":"https://pith.science/.well-known/pith/LJGLSVGW5WPX5OVZLYYXYOQPW3/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:LJGLSVGW5WPX5OVZLYYXYOQPW3","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":"a9ef43a532a6f19a3e7d73c6fbbf199165202028746524cdde22f426fdd363a9","cross_cats_sorted":["stat.TH"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.ST","submitted_at":"2013-07-31T16:03:03Z","title_canon_sha256":"51f2c0fcb6d49cadb03a0be9ad0d535274badc277b293ce51ef56fa2edbf1837"},"schema_version":"1.0","source":{"id":"1307.8369","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1307.8369","created_at":"2026-05-18T03:17:01Z"},{"alias_kind":"arxiv_version","alias_value":"1307.8369v1","created_at":"2026-05-18T03:17:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1307.8369","created_at":"2026-05-18T03:17:01Z"},{"alias_kind":"pith_short_12","alias_value":"LJGLSVGW5WPX","created_at":"2026-05-18T12:27:51Z"},{"alias_kind":"pith_short_16","alias_value":"LJGLSVGW5WPX5OVZ","created_at":"2026-05-18T12:27:51Z"},{"alias_kind":"pith_short_8","alias_value":"LJGLSVGW","created_at":"2026-05-18T12:27:51Z"}],"graph_snapshots":[{"event_id":"sha256:540e6007cd93c6eb06596885a32f8f4baf82d511879fbdc15df100cf38e6bb3d","target":"graph","created_at":"2026-05-18T03:17:01Z","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":"For right censored survival data, it is well known that the mean survival time can be consistently estimated when the support of the censoring time contains the support of the survival time. In practice, however, this condition can be easily violated because the follow-up of a study is usually within a finite window. In this article we show that the mean survival time is still estimable from a linear model when the support of some covariate(s) with nonzero coefficient(s) is unbounded regardless of the length of follow-up. This implies that the mean survival time can be well estimated when the ","authors_text":"Bin Nan, Ying Ding","cross_cats":["stat.TH"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.ST","submitted_at":"2013-07-31T16:03:03Z","title":"Estimating mean survival time: when is it possible?"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1307.8369","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:d0f212263676821c4c2ffed716c308561c9c2a6455b7c23c8033534c98b9cb2a","target":"record","created_at":"2026-05-18T03:17:01Z","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":"a9ef43a532a6f19a3e7d73c6fbbf199165202028746524cdde22f426fdd363a9","cross_cats_sorted":["stat.TH"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.ST","submitted_at":"2013-07-31T16:03:03Z","title_canon_sha256":"51f2c0fcb6d49cadb03a0be9ad0d535274badc277b293ce51ef56fa2edbf1837"},"schema_version":"1.0","source":{"id":"1307.8369","kind":"arxiv","version":1}},"canonical_sha256":"5a4cb954d6ed9f7ebab95e317c3a0fb6faf18cfb71bf7b46db70a48a9aa61d51","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"5a4cb954d6ed9f7ebab95e317c3a0fb6faf18cfb71bf7b46db70a48a9aa61d51","first_computed_at":"2026-05-18T03:17:01.360097Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:17:01.360097Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"wAsneAN9AK4pBr2u+6GQ0OIGZ06dy2AVbm37bUl8TVjUbp5dSp1hpCeL8PQIXRwL7oR3SIdsjTonoPvm47XZDA==","signature_status":"signed_v1","signed_at":"2026-05-18T03:17:01.360752Z","signed_message":"canonical_sha256_bytes"},"source_id":"1307.8369","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d0f212263676821c4c2ffed716c308561c9c2a6455b7c23c8033534c98b9cb2a","sha256:540e6007cd93c6eb06596885a32f8f4baf82d511879fbdc15df100cf38e6bb3d"],"state_sha256":"d04f28195cd30accd30b2bbc4cd67639d7ec5b8f39fea44ce31eab3691522002"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"e4Fyp57PeMDDbaYNQa2OGbmJBLg2Ln9YK/CJQKrNplnpMlFdi1Xl1sWKksZ/ximmrHoSDZa0SjXTr5dke+cwAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-05T20:13:59.425491Z","bundle_sha256":"ad5745aa7cca570b3b5f52a4f47632e5bf728a3499298f77673b10d6fc0a3c09"}}