{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:OZN7HBW3Y5VAZW7WXYEUSGIMQ7","short_pith_number":"pith:OZN7HBW3","canonical_record":{"source":{"id":"1108.1628","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.PE","submitted_at":"2011-08-08T08:40:57Z","cross_cats_sorted":["q-bio.GN"],"title_canon_sha256":"799fca9253f357d4d172ff769b770995bcbce7560a90d7b4ce88225fc2fe10d2","abstract_canon_sha256":"9144686971b2fc43f50c114e7a6fa25c4fe1146b3a8842d5a15370ab55414306"},"schema_version":"1.0"},"canonical_sha256":"765bf386dbc76a0cdbf6be0949190c87f8baab2cdc79af858226763fd0fd7e26","source":{"kind":"arxiv","id":"1108.1628","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1108.1628","created_at":"2026-05-18T04:16:00Z"},{"alias_kind":"arxiv_version","alias_value":"1108.1628v1","created_at":"2026-05-18T04:16:00Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1108.1628","created_at":"2026-05-18T04:16:00Z"},{"alias_kind":"pith_short_12","alias_value":"OZN7HBW3Y5VA","created_at":"2026-05-18T12:26:39Z"},{"alias_kind":"pith_short_16","alias_value":"OZN7HBW3Y5VAZW7W","created_at":"2026-05-18T12:26:39Z"},{"alias_kind":"pith_short_8","alias_value":"OZN7HBW3","created_at":"2026-05-18T12:26:39Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:OZN7HBW3Y5VAZW7WXYEUSGIMQ7","target":"record","payload":{"canonical_record":{"source":{"id":"1108.1628","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.PE","submitted_at":"2011-08-08T08:40:57Z","cross_cats_sorted":["q-bio.GN"],"title_canon_sha256":"799fca9253f357d4d172ff769b770995bcbce7560a90d7b4ce88225fc2fe10d2","abstract_canon_sha256":"9144686971b2fc43f50c114e7a6fa25c4fe1146b3a8842d5a15370ab55414306"},"schema_version":"1.0"},"canonical_sha256":"765bf386dbc76a0cdbf6be0949190c87f8baab2cdc79af858226763fd0fd7e26","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:16:00.512466Z","signature_b64":"H/Jl6o3zl/vIm6xvN2zb2NGn/j5FbquiLDWnX86vETBkFUgyyOernkL92S/Qf0TKaZ78XT4JdDvQtvbjfEE9CQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"765bf386dbc76a0cdbf6be0949190c87f8baab2cdc79af858226763fd0fd7e26","last_reissued_at":"2026-05-18T04:16:00.511918Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:16:00.511918Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1108.1628","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":"2026-05-18T04:16:00Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QraM4c4N4/5YR83yLzN+uFfEXunZ5B9J75VbleSJs0JjSev+bGnTkTIyBiAZV2N/vPGsK0ua5TueSMN7W3FKAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-25T12:16:11.781607Z"},"content_sha256":"f4b430b4e0bbea2ccc413436469c25ce79bebd757702b97271651cb9f729da6b","schema_version":"1.0","event_id":"sha256:f4b430b4e0bbea2ccc413436469c25ce79bebd757702b97271651cb9f729da6b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:OZN7HBW3Y5VAZW7WXYEUSGIMQ7","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Estimating Species Trees from Quartet Gene Tree Distributions under the Coalescent Model","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["q-bio.GN"],"primary_cat":"q-bio.PE","authors_text":"Martin Kreidl","submitted_at":"2011-08-08T08:40:57Z","abstract_excerpt":"In this article we propose a new method, which we name 'quartet neighbor joining', or 'quartet-NJ', to infer an unrooted species tree on a given set of taxa T from empirical distributions of unrooted quartet gene trees on all four-taxon subsets of T. In particular, quartet-NJ can be used to estimate a species tree on T from distributions of gene trees on T. The quartet-NJ algorithm is conceptually very similar to classical neighbor joining, and its statistical consistency under the multispecies coalescent model is proved by a variant of the classical 'cherry picking'-theorem. In order to demon"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1108.1628","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":"2026-05-18T04:16:00Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"P/nM2hGavCgziuUni3i8koAQpzss7hFc7G1A6DO/RKVgHm8McXHs6K9AReFXt5oiu4ZOu85GW8Sx83NFpo6vCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-25T12:16:11.781981Z"},"content_sha256":"5304e2871dbd6541096dde9240e5f12d961fa42bd9eb30706879e2a7d973cc8e","schema_version":"1.0","event_id":"sha256:5304e2871dbd6541096dde9240e5f12d961fa42bd9eb30706879e2a7d973cc8e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/OZN7HBW3Y5VAZW7WXYEUSGIMQ7/bundle.json","state_url":"https://pith.science/pith/OZN7HBW3Y5VAZW7WXYEUSGIMQ7/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/OZN7HBW3Y5VAZW7WXYEUSGIMQ7/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":"2026-06-25T12:16:11Z","links":{"resolver":"https://pith.science/pith/OZN7HBW3Y5VAZW7WXYEUSGIMQ7","bundle":"https://pith.science/pith/OZN7HBW3Y5VAZW7WXYEUSGIMQ7/bundle.json","state":"https://pith.science/pith/OZN7HBW3Y5VAZW7WXYEUSGIMQ7/state.json","well_known_bundle":"https://pith.science/.well-known/pith/OZN7HBW3Y5VAZW7WXYEUSGIMQ7/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:OZN7HBW3Y5VAZW7WXYEUSGIMQ7","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":"9144686971b2fc43f50c114e7a6fa25c4fe1146b3a8842d5a15370ab55414306","cross_cats_sorted":["q-bio.GN"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.PE","submitted_at":"2011-08-08T08:40:57Z","title_canon_sha256":"799fca9253f357d4d172ff769b770995bcbce7560a90d7b4ce88225fc2fe10d2"},"schema_version":"1.0","source":{"id":"1108.1628","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1108.1628","created_at":"2026-05-18T04:16:00Z"},{"alias_kind":"arxiv_version","alias_value":"1108.1628v1","created_at":"2026-05-18T04:16:00Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1108.1628","created_at":"2026-05-18T04:16:00Z"},{"alias_kind":"pith_short_12","alias_value":"OZN7HBW3Y5VA","created_at":"2026-05-18T12:26:39Z"},{"alias_kind":"pith_short_16","alias_value":"OZN7HBW3Y5VAZW7W","created_at":"2026-05-18T12:26:39Z"},{"alias_kind":"pith_short_8","alias_value":"OZN7HBW3","created_at":"2026-05-18T12:26:39Z"}],"graph_snapshots":[{"event_id":"sha256:5304e2871dbd6541096dde9240e5f12d961fa42bd9eb30706879e2a7d973cc8e","target":"graph","created_at":"2026-05-18T04:16:00Z","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 article we propose a new method, which we name 'quartet neighbor joining', or 'quartet-NJ', to infer an unrooted species tree on a given set of taxa T from empirical distributions of unrooted quartet gene trees on all four-taxon subsets of T. In particular, quartet-NJ can be used to estimate a species tree on T from distributions of gene trees on T. The quartet-NJ algorithm is conceptually very similar to classical neighbor joining, and its statistical consistency under the multispecies coalescent model is proved by a variant of the classical 'cherry picking'-theorem. In order to demon","authors_text":"Martin Kreidl","cross_cats":["q-bio.GN"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.PE","submitted_at":"2011-08-08T08:40:57Z","title":"Estimating Species Trees from Quartet Gene Tree Distributions under the Coalescent Model"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1108.1628","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:f4b430b4e0bbea2ccc413436469c25ce79bebd757702b97271651cb9f729da6b","target":"record","created_at":"2026-05-18T04:16:00Z","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":"9144686971b2fc43f50c114e7a6fa25c4fe1146b3a8842d5a15370ab55414306","cross_cats_sorted":["q-bio.GN"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.PE","submitted_at":"2011-08-08T08:40:57Z","title_canon_sha256":"799fca9253f357d4d172ff769b770995bcbce7560a90d7b4ce88225fc2fe10d2"},"schema_version":"1.0","source":{"id":"1108.1628","kind":"arxiv","version":1}},"canonical_sha256":"765bf386dbc76a0cdbf6be0949190c87f8baab2cdc79af858226763fd0fd7e26","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"765bf386dbc76a0cdbf6be0949190c87f8baab2cdc79af858226763fd0fd7e26","first_computed_at":"2026-05-18T04:16:00.511918Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:16:00.511918Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"H/Jl6o3zl/vIm6xvN2zb2NGn/j5FbquiLDWnX86vETBkFUgyyOernkL92S/Qf0TKaZ78XT4JdDvQtvbjfEE9CQ==","signature_status":"signed_v1","signed_at":"2026-05-18T04:16:00.512466Z","signed_message":"canonical_sha256_bytes"},"source_id":"1108.1628","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f4b430b4e0bbea2ccc413436469c25ce79bebd757702b97271651cb9f729da6b","sha256:5304e2871dbd6541096dde9240e5f12d961fa42bd9eb30706879e2a7d973cc8e"],"state_sha256":"698e4bd6451b2f02a295c6dd93f537d3cced060ae800a8a4e2ed241da63cc869"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"E22UIGuGQ+pjAlBH7HIE/ChfFKbT8l24CS6Kw5g5olbHpgw/517JCbN/IA+1qGlhBsyFdv8mWebNVPJBI2MnAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-25T12:16:11.784001Z","bundle_sha256":"523ae2e7bd0b21a68ec5f3a52d065d593f83ca098172640db1a9c9f83db68ce9"}}