{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:ZDI7KWGV7UU5OBAM5PEYKBS7ME","short_pith_number":"pith:ZDI7KWGV","canonical_record":{"source":{"id":"1212.3194","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-12-13T15:23:51Z","cross_cats_sorted":[],"title_canon_sha256":"606c5e83976ade8e573a1cae762e0ba3e9214fbea73237d39b8bab164d54275b","abstract_canon_sha256":"844f1c5c934f0187e6553851888a4a0e6b196ed081782d2e27e58577ca96b688"},"schema_version":"1.0"},"canonical_sha256":"c8d1f558d5fd29d7040cebc985065f61111d1729e1f4e051a1dc5ad8ef19b72a","source":{"kind":"arxiv","id":"1212.3194","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1212.3194","created_at":"2026-05-18T01:52:38Z"},{"alias_kind":"arxiv_version","alias_value":"1212.3194v1","created_at":"2026-05-18T01:52:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1212.3194","created_at":"2026-05-18T01:52:38Z"},{"alias_kind":"pith_short_12","alias_value":"ZDI7KWGV7UU5","created_at":"2026-05-18T12:27:30Z"},{"alias_kind":"pith_short_16","alias_value":"ZDI7KWGV7UU5OBAM","created_at":"2026-05-18T12:27:30Z"},{"alias_kind":"pith_short_8","alias_value":"ZDI7KWGV","created_at":"2026-05-18T12:27:30Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:ZDI7KWGV7UU5OBAM5PEYKBS7ME","target":"record","payload":{"canonical_record":{"source":{"id":"1212.3194","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-12-13T15:23:51Z","cross_cats_sorted":[],"title_canon_sha256":"606c5e83976ade8e573a1cae762e0ba3e9214fbea73237d39b8bab164d54275b","abstract_canon_sha256":"844f1c5c934f0187e6553851888a4a0e6b196ed081782d2e27e58577ca96b688"},"schema_version":"1.0"},"canonical_sha256":"c8d1f558d5fd29d7040cebc985065f61111d1729e1f4e051a1dc5ad8ef19b72a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:52:38.787425Z","signature_b64":"rt2GWv1116t5qaCv/EX0ZSK5WJkhIa/7kYNzEunIGaCdmio+/jviTyF4Jt6sx9SmtmNp6u9TeoRrkO0LOsTfAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c8d1f558d5fd29d7040cebc985065f61111d1729e1f4e051a1dc5ad8ef19b72a","last_reissued_at":"2026-05-18T01:52:38.786748Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:52:38.786748Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1212.3194","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":"2026-05-18T01:52:38Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"juXCxE3B2NXGu0hc64uqUgSl17jW2Rf3BY9Q0UK9itk7cf4ywQeyL9IL+uj5VUIAuIUcTtzCZbiSoxWQOYA3Dw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T17:40:40.962951Z"},"content_sha256":"97fe7053754a9ba4e195576c564d28ad9509cd2bd41fb73a65f1af1327702e3f","schema_version":"1.0","event_id":"sha256:97fe7053754a9ba4e195576c564d28ad9509cd2bd41fb73a65f1af1327702e3f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:ZDI7KWGV7UU5OBAM5PEYKBS7ME","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Sparsely Sampling the Sky: A Bayesian Experimental Design Approach","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"A. H. Jaffe, P. Paykari","submitted_at":"2012-12-13T15:23:51Z","abstract_excerpt":"The next generation of galaxy surveys will observe millions of galaxies over large volumes of the universe. These surveys are expensive both in time and cost, raising questions regarding the optimal investment of this time and money. In this work we investigate criteria for selecting amongst observing strategies for constraining the galaxy power spectrum and a set of cosmological parameters. Depending on the parameters of interest, it may be more efficient to observe a larger, but sparsely sampled, area of sky instead of a smaller contiguous area. In this work, by making use of the principles "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1212.3194","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":"2026-05-18T01:52:38Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"D6QOhVsni6ZK5PEVXT1kATAoKhYWrUCTFd2OtAK5UK5sKPDQMhLma3E4X+TySKAw+m03qjBpdda98Zh64zKuAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T17:40:40.963634Z"},"content_sha256":"0ebc6c4a751bfec626c4327f146a16d84bdf12bec42d924574413d8218de0f76","schema_version":"1.0","event_id":"sha256:0ebc6c4a751bfec626c4327f146a16d84bdf12bec42d924574413d8218de0f76"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ZDI7KWGV7UU5OBAM5PEYKBS7ME/bundle.json","state_url":"https://pith.science/pith/ZDI7KWGV7UU5OBAM5PEYKBS7ME/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ZDI7KWGV7UU5OBAM5PEYKBS7ME/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":"2026-05-26T17:40:40Z","links":{"resolver":"https://pith.science/pith/ZDI7KWGV7UU5OBAM5PEYKBS7ME","bundle":"https://pith.science/pith/ZDI7KWGV7UU5OBAM5PEYKBS7ME/bundle.json","state":"https://pith.science/pith/ZDI7KWGV7UU5OBAM5PEYKBS7ME/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ZDI7KWGV7UU5OBAM5PEYKBS7ME/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:ZDI7KWGV7UU5OBAM5PEYKBS7ME","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":"844f1c5c934f0187e6553851888a4a0e6b196ed081782d2e27e58577ca96b688","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-12-13T15:23:51Z","title_canon_sha256":"606c5e83976ade8e573a1cae762e0ba3e9214fbea73237d39b8bab164d54275b"},"schema_version":"1.0","source":{"id":"1212.3194","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1212.3194","created_at":"2026-05-18T01:52:38Z"},{"alias_kind":"arxiv_version","alias_value":"1212.3194v1","created_at":"2026-05-18T01:52:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1212.3194","created_at":"2026-05-18T01:52:38Z"},{"alias_kind":"pith_short_12","alias_value":"ZDI7KWGV7UU5","created_at":"2026-05-18T12:27:30Z"},{"alias_kind":"pith_short_16","alias_value":"ZDI7KWGV7UU5OBAM","created_at":"2026-05-18T12:27:30Z"},{"alias_kind":"pith_short_8","alias_value":"ZDI7KWGV","created_at":"2026-05-18T12:27:30Z"}],"graph_snapshots":[{"event_id":"sha256:0ebc6c4a751bfec626c4327f146a16d84bdf12bec42d924574413d8218de0f76","target":"graph","created_at":"2026-05-18T01:52:38Z","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 next generation of galaxy surveys will observe millions of galaxies over large volumes of the universe. These surveys are expensive both in time and cost, raising questions regarding the optimal investment of this time and money. In this work we investigate criteria for selecting amongst observing strategies for constraining the galaxy power spectrum and a set of cosmological parameters. Depending on the parameters of interest, it may be more efficient to observe a larger, but sparsely sampled, area of sky instead of a smaller contiguous area. In this work, by making use of the principles ","authors_text":"A. H. Jaffe, P. Paykari","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-12-13T15:23:51Z","title":"Sparsely Sampling the Sky: A Bayesian Experimental Design Approach"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1212.3194","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":"sha256:97fe7053754a9ba4e195576c564d28ad9509cd2bd41fb73a65f1af1327702e3f","target":"record","created_at":"2026-05-18T01:52:38Z","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":"844f1c5c934f0187e6553851888a4a0e6b196ed081782d2e27e58577ca96b688","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-12-13T15:23:51Z","title_canon_sha256":"606c5e83976ade8e573a1cae762e0ba3e9214fbea73237d39b8bab164d54275b"},"schema_version":"1.0","source":{"id":"1212.3194","kind":"arxiv","version":1}},"canonical_sha256":"c8d1f558d5fd29d7040cebc985065f61111d1729e1f4e051a1dc5ad8ef19b72a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c8d1f558d5fd29d7040cebc985065f61111d1729e1f4e051a1dc5ad8ef19b72a","first_computed_at":"2026-05-18T01:52:38.786748Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:52:38.786748Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"rt2GWv1116t5qaCv/EX0ZSK5WJkhIa/7kYNzEunIGaCdmio+/jviTyF4Jt6sx9SmtmNp6u9TeoRrkO0LOsTfAw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:52:38.787425Z","signed_message":"canonical_sha256_bytes"},"source_id":"1212.3194","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:97fe7053754a9ba4e195576c564d28ad9509cd2bd41fb73a65f1af1327702e3f","sha256:0ebc6c4a751bfec626c4327f146a16d84bdf12bec42d924574413d8218de0f76"],"state_sha256":"396c491c5ae3a4c2c4915b7bb5edb65e95e5f7c37b93256a1fbc4fe6bd976713"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"uxx9dP2d+yIak2azk56VN4qLjsuNxVue+ltSDcitDNFQhsoZwrGvoH6t6R0N83EO/v2+ljkmrvKDn+wPvsKbAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T17:40:40.966917Z","bundle_sha256":"225993fb48bc529a61095e653398fe5292d9dfd734f40f33f8b6932fb2c0ec48"}}