{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:UJIBH3OARZOLL2WWBRRZWA3VQI","short_pith_number":"pith:UJIBH3OA","canonical_record":{"source":{"id":"1107.3971","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-07-20T13:24:53Z","cross_cats_sorted":[],"title_canon_sha256":"8c4de6b90ea3851e07b8381fd0013ca624525eabb4eff0940b1bd73c7c683a32","abstract_canon_sha256":"e439df0e99f1a9db8b8a97e3610589a921d79a9e433354c69788ba839fee7793"},"schema_version":"1.0"},"canonical_sha256":"a25013edc08e5cb5ead60c639b0375822b8c41b2cb98cbf2e20041b64c813ef7","source":{"kind":"arxiv","id":"1107.3971","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1107.3971","created_at":"2026-05-18T03:43:18Z"},{"alias_kind":"arxiv_version","alias_value":"1107.3971v1","created_at":"2026-05-18T03:43:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1107.3971","created_at":"2026-05-18T03:43:18Z"},{"alias_kind":"pith_short_12","alias_value":"UJIBH3OARZOL","created_at":"2026-05-18T12:26:42Z"},{"alias_kind":"pith_short_16","alias_value":"UJIBH3OARZOLL2WW","created_at":"2026-05-18T12:26:42Z"},{"alias_kind":"pith_short_8","alias_value":"UJIBH3OA","created_at":"2026-05-18T12:26:42Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:UJIBH3OARZOLL2WWBRRZWA3VQI","target":"record","payload":{"canonical_record":{"source":{"id":"1107.3971","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-07-20T13:24:53Z","cross_cats_sorted":[],"title_canon_sha256":"8c4de6b90ea3851e07b8381fd0013ca624525eabb4eff0940b1bd73c7c683a32","abstract_canon_sha256":"e439df0e99f1a9db8b8a97e3610589a921d79a9e433354c69788ba839fee7793"},"schema_version":"1.0"},"canonical_sha256":"a25013edc08e5cb5ead60c639b0375822b8c41b2cb98cbf2e20041b64c813ef7","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:43:18.754045Z","signature_b64":"rQK+wm/rRcuTQkNIRHOqNBLOQFcmXsmrrOm0Ef/WqJJa9MVQ4spiXO217X4B1Edrb5iAuhHMfpyQJIlcrHoSBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a25013edc08e5cb5ead60c639b0375822b8c41b2cb98cbf2e20041b64c813ef7","last_reissued_at":"2026-05-18T03:43:18.753187Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:43:18.753187Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1107.3971","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":"2026-05-18T03:43:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+WNvSqOB7NTsVCcFZSJtQJxkhe4y+i7akAqpHCubm0CkVWt0ZIbgdW1MwWdCeTvafiJWHYOundMh7AOVEjAGBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T21:54:35.239823Z"},"content_sha256":"2f631da52b5ec23e241180476f91e7bd236a51a69d76ba733b8e5417e6d6646f","schema_version":"1.0","event_id":"sha256:2f631da52b5ec23e241180476f91e7bd236a51a69d76ba733b8e5417e6d6646f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:UJIBH3OARZOLL2WWBRRZWA3VQI","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Chi-square versus median statistics in SNIa data analysis","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"A. Barreira, P. P. Avelino","submitted_at":"2011-07-20T13:24:53Z","abstract_excerpt":"In this paper we compare the performances of the chi-square and median likelihood analysis in the determination of cosmological constraints using type Ia supernovae data. We perform a statistical analysis using the 307 supernovae of the Union 2 compilation of the Supernova Cosmology Project and find that the chi-square statistical analysis yields tighter cosmological constraints than the median statistic if only supernovae data is taken into account. We also show that when additional measurements from the Cosmic Microwave Background and Baryonic Acoustic Oscillations are considered, the combin"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1107.3971","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":"2026-05-18T03:43:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"liDmos79/VEL9TlkkqqbnrpgpuAIShG/APPrCYTrdDc/qoJUWuvCF0uv9GfoNLZfmIf2IfSzsUWqwfxXsZnyBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T21:54:35.240515Z"},"content_sha256":"68f9521274b6d4a2cdc25598945d6aca45625f18b6dca101b4e4b38ac929fa68","schema_version":"1.0","event_id":"sha256:68f9521274b6d4a2cdc25598945d6aca45625f18b6dca101b4e4b38ac929fa68"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/UJIBH3OARZOLL2WWBRRZWA3VQI/bundle.json","state_url":"https://pith.science/pith/UJIBH3OARZOLL2WWBRRZWA3VQI/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/UJIBH3OARZOLL2WWBRRZWA3VQI/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":"2026-06-05T21:54:35Z","links":{"resolver":"https://pith.science/pith/UJIBH3OARZOLL2WWBRRZWA3VQI","bundle":"https://pith.science/pith/UJIBH3OARZOLL2WWBRRZWA3VQI/bundle.json","state":"https://pith.science/pith/UJIBH3OARZOLL2WWBRRZWA3VQI/state.json","well_known_bundle":"https://pith.science/.well-known/pith/UJIBH3OARZOLL2WWBRRZWA3VQI/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:UJIBH3OARZOLL2WWBRRZWA3VQI","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":"e439df0e99f1a9db8b8a97e3610589a921d79a9e433354c69788ba839fee7793","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-07-20T13:24:53Z","title_canon_sha256":"8c4de6b90ea3851e07b8381fd0013ca624525eabb4eff0940b1bd73c7c683a32"},"schema_version":"1.0","source":{"id":"1107.3971","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1107.3971","created_at":"2026-05-18T03:43:18Z"},{"alias_kind":"arxiv_version","alias_value":"1107.3971v1","created_at":"2026-05-18T03:43:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1107.3971","created_at":"2026-05-18T03:43:18Z"},{"alias_kind":"pith_short_12","alias_value":"UJIBH3OARZOL","created_at":"2026-05-18T12:26:42Z"},{"alias_kind":"pith_short_16","alias_value":"UJIBH3OARZOLL2WW","created_at":"2026-05-18T12:26:42Z"},{"alias_kind":"pith_short_8","alias_value":"UJIBH3OA","created_at":"2026-05-18T12:26:42Z"}],"graph_snapshots":[{"event_id":"sha256:68f9521274b6d4a2cdc25598945d6aca45625f18b6dca101b4e4b38ac929fa68","target":"graph","created_at":"2026-05-18T03:43:18Z","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"},"paper":{"abstract_excerpt":"In this paper we compare the performances of the chi-square and median likelihood analysis in the determination of cosmological constraints using type Ia supernovae data. We perform a statistical analysis using the 307 supernovae of the Union 2 compilation of the Supernova Cosmology Project and find that the chi-square statistical analysis yields tighter cosmological constraints than the median statistic if only supernovae data is taken into account. We also show that when additional measurements from the Cosmic Microwave Background and Baryonic Acoustic Oscillations are considered, the combin","authors_text":"A. Barreira, P. P. Avelino","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-07-20T13:24:53Z","title":"Chi-square versus median statistics in SNIa data analysis"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1107.3971","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":"sha256:2f631da52b5ec23e241180476f91e7bd236a51a69d76ba733b8e5417e6d6646f","target":"record","created_at":"2026-05-18T03:43:18Z","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":"e439df0e99f1a9db8b8a97e3610589a921d79a9e433354c69788ba839fee7793","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-07-20T13:24:53Z","title_canon_sha256":"8c4de6b90ea3851e07b8381fd0013ca624525eabb4eff0940b1bd73c7c683a32"},"schema_version":"1.0","source":{"id":"1107.3971","kind":"arxiv","version":1}},"canonical_sha256":"a25013edc08e5cb5ead60c639b0375822b8c41b2cb98cbf2e20041b64c813ef7","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a25013edc08e5cb5ead60c639b0375822b8c41b2cb98cbf2e20041b64c813ef7","first_computed_at":"2026-05-18T03:43:18.753187Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:43:18.753187Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"rQK+wm/rRcuTQkNIRHOqNBLOQFcmXsmrrOm0Ef/WqJJa9MVQ4spiXO217X4B1Edrb5iAuhHMfpyQJIlcrHoSBw==","signature_status":"signed_v1","signed_at":"2026-05-18T03:43:18.754045Z","signed_message":"canonical_sha256_bytes"},"source_id":"1107.3971","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2f631da52b5ec23e241180476f91e7bd236a51a69d76ba733b8e5417e6d6646f","sha256:68f9521274b6d4a2cdc25598945d6aca45625f18b6dca101b4e4b38ac929fa68"],"state_sha256":"924ea845f6cd8e97634a658eff8690fc0712f1db71c63568c65c276b28549bd7"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"VbAXoOKEF43wcmcAGaP+Kw6iXAo9ytx8T7xHiMtyunKsQ7h9QiQK9597FqRLgADsEeGqmxmKJ+a4voYAEu/4Dw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-05T21:54:35.244260Z","bundle_sha256":"8f4aaad2f5556d3e37c740722371e97e6c7b12278e448c978bddb7b84d798934"}}