{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2010:WZM35UY4OQGXVBK3PWUW3SOTJ3","short_pith_number":"pith:WZM35UY4","canonical_record":{"source":{"id":"1011.3319","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"stat.AP","submitted_at":"2010-11-15T09:16:31Z","cross_cats_sorted":[],"title_canon_sha256":"c901d6e536027b8bae5c63858fb33e30155cb76581257316d6cffefba37d4140","abstract_canon_sha256":"dd5bee9605eb742a1a1b281eb9aaf34b98fb71a805c95243dc91a3c92c084843"},"schema_version":"1.0"},"canonical_sha256":"b659bed31c740d7a855b7da96dc9d34ef9bfa22d18f485ce85d8cc656f0073fc","source":{"kind":"arxiv","id":"1011.3319","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1011.3319","created_at":"2026-05-18T04:35:56Z"},{"alias_kind":"arxiv_version","alias_value":"1011.3319v1","created_at":"2026-05-18T04:35:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1011.3319","created_at":"2026-05-18T04:35:56Z"},{"alias_kind":"pith_short_12","alias_value":"WZM35UY4OQGX","created_at":"2026-05-18T12:26:17Z"},{"alias_kind":"pith_short_16","alias_value":"WZM35UY4OQGXVBK3","created_at":"2026-05-18T12:26:17Z"},{"alias_kind":"pith_short_8","alias_value":"WZM35UY4","created_at":"2026-05-18T12:26:17Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2010:WZM35UY4OQGXVBK3PWUW3SOTJ3","target":"record","payload":{"canonical_record":{"source":{"id":"1011.3319","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"stat.AP","submitted_at":"2010-11-15T09:16:31Z","cross_cats_sorted":[],"title_canon_sha256":"c901d6e536027b8bae5c63858fb33e30155cb76581257316d6cffefba37d4140","abstract_canon_sha256":"dd5bee9605eb742a1a1b281eb9aaf34b98fb71a805c95243dc91a3c92c084843"},"schema_version":"1.0"},"canonical_sha256":"b659bed31c740d7a855b7da96dc9d34ef9bfa22d18f485ce85d8cc656f0073fc","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:35:56.137478Z","signature_b64":"zdq/1e2PXB2Od1GRcxaKsocaD0PSdvexyXwHzNfzDBJEal9FbRFx3u0AFKixNpcUP3tk7eXubm7aUKEds/7jBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b659bed31c740d7a855b7da96dc9d34ef9bfa22d18f485ce85d8cc656f0073fc","last_reissued_at":"2026-05-18T04:35:56.137071Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:35:56.137071Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1011.3319","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":"2026-05-18T04:35:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"S0Q4TTUeZGPlJFuGObuH/iOnx5oUYQL+kFLA/nn5EAxtUUVq///kencXntew5UXoho9XoCWDmA3wUKj8r9RgCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-25T07:25:45.068754Z"},"content_sha256":"e583773540cb69d9e3de0911cf88f75ea086fe49d1407ddcc06604f65d6a7d30","schema_version":"1.0","event_id":"sha256:e583773540cb69d9e3de0911cf88f75ea086fe49d1407ddcc06604f65d6a7d30"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2010:WZM35UY4OQGXVBK3PWUW3SOTJ3","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Poisson point process models solve the \"pseudo-absence problem\" for presence-only data in ecology","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"stat.AP","authors_text":"David I. Warton, Leah C. Shepherd","submitted_at":"2010-11-15T09:16:31Z","abstract_excerpt":"Presence-only data, point locations where a species has been recorded as being present, are often used in modeling the distribution of a species as a function of a set of explanatory variables---whether to map species occurrence, to understand its association with the environment, or to predict its response to environmental change. Currently, ecologists most commonly analyze presence-only data by adding randomly chosen \"pseudo-absences\" to the data such that it can be analyzed using logistic regression, an approach which has weaknesses in model specification, in interpretation, and in implemen"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1011.3319","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":"2026-05-18T04:35:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"OJpldn+lqDL6pLML2CpiC0qETCwGU0UMqNALz4LDINk0LmmdxhC9pSh9mMlSFmgpgsmqdF9SYdmGz6ZBqdZxAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-25T07:25:45.069105Z"},"content_sha256":"64bcedcb89128bfdd70c1c356b7ae9627a40094ba51ce82da1c35b7e367581bd","schema_version":"1.0","event_id":"sha256:64bcedcb89128bfdd70c1c356b7ae9627a40094ba51ce82da1c35b7e367581bd"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/WZM35UY4OQGXVBK3PWUW3SOTJ3/bundle.json","state_url":"https://pith.science/pith/WZM35UY4OQGXVBK3PWUW3SOTJ3/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/WZM35UY4OQGXVBK3PWUW3SOTJ3/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":"2026-06-25T07:25:45Z","links":{"resolver":"https://pith.science/pith/WZM35UY4OQGXVBK3PWUW3SOTJ3","bundle":"https://pith.science/pith/WZM35UY4OQGXVBK3PWUW3SOTJ3/bundle.json","state":"https://pith.science/pith/WZM35UY4OQGXVBK3PWUW3SOTJ3/state.json","well_known_bundle":"https://pith.science/.well-known/pith/WZM35UY4OQGXVBK3PWUW3SOTJ3/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:WZM35UY4OQGXVBK3PWUW3SOTJ3","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":"dd5bee9605eb742a1a1b281eb9aaf34b98fb71a805c95243dc91a3c92c084843","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"stat.AP","submitted_at":"2010-11-15T09:16:31Z","title_canon_sha256":"c901d6e536027b8bae5c63858fb33e30155cb76581257316d6cffefba37d4140"},"schema_version":"1.0","source":{"id":"1011.3319","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1011.3319","created_at":"2026-05-18T04:35:56Z"},{"alias_kind":"arxiv_version","alias_value":"1011.3319v1","created_at":"2026-05-18T04:35:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1011.3319","created_at":"2026-05-18T04:35:56Z"},{"alias_kind":"pith_short_12","alias_value":"WZM35UY4OQGX","created_at":"2026-05-18T12:26:17Z"},{"alias_kind":"pith_short_16","alias_value":"WZM35UY4OQGXVBK3","created_at":"2026-05-18T12:26:17Z"},{"alias_kind":"pith_short_8","alias_value":"WZM35UY4","created_at":"2026-05-18T12:26:17Z"}],"graph_snapshots":[{"event_id":"sha256:64bcedcb89128bfdd70c1c356b7ae9627a40094ba51ce82da1c35b7e367581bd","target":"graph","created_at":"2026-05-18T04:35:56Z","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":"Presence-only data, point locations where a species has been recorded as being present, are often used in modeling the distribution of a species as a function of a set of explanatory variables---whether to map species occurrence, to understand its association with the environment, or to predict its response to environmental change. Currently, ecologists most commonly analyze presence-only data by adding randomly chosen \"pseudo-absences\" to the data such that it can be analyzed using logistic regression, an approach which has weaknesses in model specification, in interpretation, and in implemen","authors_text":"David I. Warton, Leah C. Shepherd","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"stat.AP","submitted_at":"2010-11-15T09:16:31Z","title":"Poisson point process models solve the \"pseudo-absence problem\" for presence-only data in ecology"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1011.3319","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:e583773540cb69d9e3de0911cf88f75ea086fe49d1407ddcc06604f65d6a7d30","target":"record","created_at":"2026-05-18T04:35:56Z","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":"dd5bee9605eb742a1a1b281eb9aaf34b98fb71a805c95243dc91a3c92c084843","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"stat.AP","submitted_at":"2010-11-15T09:16:31Z","title_canon_sha256":"c901d6e536027b8bae5c63858fb33e30155cb76581257316d6cffefba37d4140"},"schema_version":"1.0","source":{"id":"1011.3319","kind":"arxiv","version":1}},"canonical_sha256":"b659bed31c740d7a855b7da96dc9d34ef9bfa22d18f485ce85d8cc656f0073fc","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b659bed31c740d7a855b7da96dc9d34ef9bfa22d18f485ce85d8cc656f0073fc","first_computed_at":"2026-05-18T04:35:56.137071Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:35:56.137071Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"zdq/1e2PXB2Od1GRcxaKsocaD0PSdvexyXwHzNfzDBJEal9FbRFx3u0AFKixNpcUP3tk7eXubm7aUKEds/7jBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T04:35:56.137478Z","signed_message":"canonical_sha256_bytes"},"source_id":"1011.3319","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e583773540cb69d9e3de0911cf88f75ea086fe49d1407ddcc06604f65d6a7d30","sha256:64bcedcb89128bfdd70c1c356b7ae9627a40094ba51ce82da1c35b7e367581bd"],"state_sha256":"27959262ac748b2d8decd1ccbe137ea40057164018159b1855064d4b16b9a8c8"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1fCj5BdpuBvbXtRWnWlxi4uk/I4fjlYZBA47aquFKZXGBcOnLYVcBnb8mCbv1bmuAkRzgxy0Fm6FEsQB49MFCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-25T07:25:45.071069Z","bundle_sha256":"d2ae01fb4f1d037d01a8e03bf70dcc3ebc285d494d3f3f81ccdb49a60e28e1f9"}}