{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:HHF4JMKO7N6KHTM7UIDS232G5B","short_pith_number":"pith:HHF4JMKO","canonical_record":{"source":{"id":"1205.4989","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-05-22T17:36:20Z","cross_cats_sorted":[],"title_canon_sha256":"6b5c0f7534fb6d82f258631ad5a50f351fd1773c5c45481516ca9eacf1643451","abstract_canon_sha256":"3650c85ccbf56473efce9cfda3af6ac0cf01f5e8e7b676836ec03e42b506de5f"},"schema_version":"1.0"},"canonical_sha256":"39cbc4b14efb7ca3cd9fa2072d6f46e86f20fd1b869460e5b425d76ed19457d4","source":{"kind":"arxiv","id":"1205.4989","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1205.4989","created_at":"2026-05-18T01:57:24Z"},{"alias_kind":"arxiv_version","alias_value":"1205.4989v1","created_at":"2026-05-18T01:57:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1205.4989","created_at":"2026-05-18T01:57:24Z"},{"alias_kind":"pith_short_12","alias_value":"HHF4JMKO7N6K","created_at":"2026-05-18T12:27:09Z"},{"alias_kind":"pith_short_16","alias_value":"HHF4JMKO7N6KHTM7","created_at":"2026-05-18T12:27:09Z"},{"alias_kind":"pith_short_8","alias_value":"HHF4JMKO","created_at":"2026-05-18T12:27:09Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:HHF4JMKO7N6KHTM7UIDS232G5B","target":"record","payload":{"canonical_record":{"source":{"id":"1205.4989","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-05-22T17:36:20Z","cross_cats_sorted":[],"title_canon_sha256":"6b5c0f7534fb6d82f258631ad5a50f351fd1773c5c45481516ca9eacf1643451","abstract_canon_sha256":"3650c85ccbf56473efce9cfda3af6ac0cf01f5e8e7b676836ec03e42b506de5f"},"schema_version":"1.0"},"canonical_sha256":"39cbc4b14efb7ca3cd9fa2072d6f46e86f20fd1b869460e5b425d76ed19457d4","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:57:24.384296Z","signature_b64":"RWoSMrCPX6ve0ZRNIKgjD4wQvYG28ABFMutjTgRE5f/LYTgBRWlrLMcfnAu+kKtvIDUP1eVTMsSLlNRjfQUjDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"39cbc4b14efb7ca3cd9fa2072d6f46e86f20fd1b869460e5b425d76ed19457d4","last_reissued_at":"2026-05-18T01:57:24.383817Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:57:24.383817Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1205.4989","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":"2026-05-18T01:57:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"LXC6Ik7xf0WX0wuVry82HtPS0ddVgF+6WHrJDU4I3wKGi5hGgYQ8ejN626F8wzvCKveQcx6h1MT4Aww9O0leAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T22:25:55.290384Z"},"content_sha256":"c0294094c32e73d28b19007b6f6c92a798791dd44c20c6fba31ace6d86cb18fe","schema_version":"1.0","event_id":"sha256:c0294094c32e73d28b19007b6f6c92a798791dd44c20c6fba31ace6d86cb18fe"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:HHF4JMKO7N6KHTM7UIDS232G5B","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Optimizing the Recovery of Fisher Information in the Dark Matter Power Spectrum","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Hao-Ran Yu, Joachim Harnois-Deraps, Tong-Jie Zhang, Ue-Li Pen","submitted_at":"2012-05-22T17:36:20Z","abstract_excerpt":"We combine two Gaussianization techniques - Wavelet Non-Linear Wiener Filter (WNLWF) and density reconstruction - to quantify the recovery of Fisher information that is lost in the gravitational collapse. We compute a displacement fields, in analogy with the Zel'dovich approximation, and apply a Wavelet Non-Linear Wiener Filter that decomposes the reconstructed density fields into a Gaussian and a non-Gaussian component. From a series of 200 realizations of N-body simulations, we compute the recovery performance for density fields obtained with both dark matter particles and haloes. We find th"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1205.4989","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":"2026-05-18T01:57:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"f82+qq/I6AX2amM79WHlsu++KutnzqJeFzn40WE7tcGtsscBOmNHTxWaqKcf6Xoh/94taTbz/1PLkuhRSilfCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T22:25:55.291006Z"},"content_sha256":"2e268fe7f210815f2e45d6d55594ff53fe5230fb9cfaed88de362dfad037edb5","schema_version":"1.0","event_id":"sha256:2e268fe7f210815f2e45d6d55594ff53fe5230fb9cfaed88de362dfad037edb5"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/HHF4JMKO7N6KHTM7UIDS232G5B/bundle.json","state_url":"https://pith.science/pith/HHF4JMKO7N6KHTM7UIDS232G5B/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/HHF4JMKO7N6KHTM7UIDS232G5B/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":"2026-05-31T22:25:55Z","links":{"resolver":"https://pith.science/pith/HHF4JMKO7N6KHTM7UIDS232G5B","bundle":"https://pith.science/pith/HHF4JMKO7N6KHTM7UIDS232G5B/bundle.json","state":"https://pith.science/pith/HHF4JMKO7N6KHTM7UIDS232G5B/state.json","well_known_bundle":"https://pith.science/.well-known/pith/HHF4JMKO7N6KHTM7UIDS232G5B/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:HHF4JMKO7N6KHTM7UIDS232G5B","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":"3650c85ccbf56473efce9cfda3af6ac0cf01f5e8e7b676836ec03e42b506de5f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-05-22T17:36:20Z","title_canon_sha256":"6b5c0f7534fb6d82f258631ad5a50f351fd1773c5c45481516ca9eacf1643451"},"schema_version":"1.0","source":{"id":"1205.4989","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1205.4989","created_at":"2026-05-18T01:57:24Z"},{"alias_kind":"arxiv_version","alias_value":"1205.4989v1","created_at":"2026-05-18T01:57:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1205.4989","created_at":"2026-05-18T01:57:24Z"},{"alias_kind":"pith_short_12","alias_value":"HHF4JMKO7N6K","created_at":"2026-05-18T12:27:09Z"},{"alias_kind":"pith_short_16","alias_value":"HHF4JMKO7N6KHTM7","created_at":"2026-05-18T12:27:09Z"},{"alias_kind":"pith_short_8","alias_value":"HHF4JMKO","created_at":"2026-05-18T12:27:09Z"}],"graph_snapshots":[{"event_id":"sha256:2e268fe7f210815f2e45d6d55594ff53fe5230fb9cfaed88de362dfad037edb5","target":"graph","created_at":"2026-05-18T01:57:24Z","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":"We combine two Gaussianization techniques - Wavelet Non-Linear Wiener Filter (WNLWF) and density reconstruction - to quantify the recovery of Fisher information that is lost in the gravitational collapse. We compute a displacement fields, in analogy with the Zel'dovich approximation, and apply a Wavelet Non-Linear Wiener Filter that decomposes the reconstructed density fields into a Gaussian and a non-Gaussian component. From a series of 200 realizations of N-body simulations, we compute the recovery performance for density fields obtained with both dark matter particles and haloes. We find th","authors_text":"Hao-Ran Yu, Joachim Harnois-Deraps, Tong-Jie Zhang, Ue-Li Pen","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-05-22T17:36:20Z","title":"Optimizing the Recovery of Fisher Information in the Dark Matter Power Spectrum"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1205.4989","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:c0294094c32e73d28b19007b6f6c92a798791dd44c20c6fba31ace6d86cb18fe","target":"record","created_at":"2026-05-18T01:57:24Z","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":"3650c85ccbf56473efce9cfda3af6ac0cf01f5e8e7b676836ec03e42b506de5f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-05-22T17:36:20Z","title_canon_sha256":"6b5c0f7534fb6d82f258631ad5a50f351fd1773c5c45481516ca9eacf1643451"},"schema_version":"1.0","source":{"id":"1205.4989","kind":"arxiv","version":1}},"canonical_sha256":"39cbc4b14efb7ca3cd9fa2072d6f46e86f20fd1b869460e5b425d76ed19457d4","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"39cbc4b14efb7ca3cd9fa2072d6f46e86f20fd1b869460e5b425d76ed19457d4","first_computed_at":"2026-05-18T01:57:24.383817Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:57:24.383817Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"RWoSMrCPX6ve0ZRNIKgjD4wQvYG28ABFMutjTgRE5f/LYTgBRWlrLMcfnAu+kKtvIDUP1eVTMsSLlNRjfQUjDw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:57:24.384296Z","signed_message":"canonical_sha256_bytes"},"source_id":"1205.4989","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c0294094c32e73d28b19007b6f6c92a798791dd44c20c6fba31ace6d86cb18fe","sha256:2e268fe7f210815f2e45d6d55594ff53fe5230fb9cfaed88de362dfad037edb5"],"state_sha256":"b2fc582522b911c4c01b6f88cb203cace8335aacd029ce25758831b9313c904e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"TxcfNUvKUMlOMMrQNJ80oo+K87jJL4rl3E1T4UEdZ/XuzfW9odeWr3WeZTBcidGktVyINBJXqkyKL55p2cvhBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T22:25:55.294647Z","bundle_sha256":"e059d31b573eb2f3525004572de72911c2d538018c6fac2010267cb39752a83a"}}