{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2010:KXGQAASMAIPTHHQF5K22FD33SV","short_pith_number":"pith:KXGQAASM","canonical_record":{"source":{"id":"1011.4080","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/3.0/","primary_cat":"q-bio.PE","submitted_at":"2010-11-17T21:23:29Z","cross_cats_sorted":[],"title_canon_sha256":"d0c63b4b5ae9691beba1ab4e03d6237526a2304fb2209036b1e7246312143dae","abstract_canon_sha256":"5be220945127cea13fafb869590463b7545d303ab8a090fe33eb02335f279201"},"schema_version":"1.0"},"canonical_sha256":"55cd00024c021f339e05eab5a28f7b9541f61f60875e8e96595d65999558e0b5","source":{"kind":"arxiv","id":"1011.4080","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1011.4080","created_at":"2026-05-18T03:20:57Z"},{"alias_kind":"arxiv_version","alias_value":"1011.4080v2","created_at":"2026-05-18T03:20:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1011.4080","created_at":"2026-05-18T03:20:57Z"},{"alias_kind":"pith_short_12","alias_value":"KXGQAASMAIPT","created_at":"2026-05-18T12:26:09Z"},{"alias_kind":"pith_short_16","alias_value":"KXGQAASMAIPTHHQF","created_at":"2026-05-18T12:26:09Z"},{"alias_kind":"pith_short_8","alias_value":"KXGQAASM","created_at":"2026-05-18T12:26:09Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2010:KXGQAASMAIPTHHQF5K22FD33SV","target":"record","payload":{"canonical_record":{"source":{"id":"1011.4080","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/3.0/","primary_cat":"q-bio.PE","submitted_at":"2010-11-17T21:23:29Z","cross_cats_sorted":[],"title_canon_sha256":"d0c63b4b5ae9691beba1ab4e03d6237526a2304fb2209036b1e7246312143dae","abstract_canon_sha256":"5be220945127cea13fafb869590463b7545d303ab8a090fe33eb02335f279201"},"schema_version":"1.0"},"canonical_sha256":"55cd00024c021f339e05eab5a28f7b9541f61f60875e8e96595d65999558e0b5","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:20:57.325926Z","signature_b64":"2DYbyR2kkiDMVWJ2su6XrCQCQQZZuGSfo+4FNRmfRH7gF0DoKllCJv9QYvJ+2KGe+1Re5LShAEeOIXxQlZSKDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"55cd00024c021f339e05eab5a28f7b9541f61f60875e8e96595d65999558e0b5","last_reissued_at":"2026-05-18T03:20:57.325408Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:20:57.325408Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1011.4080","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T03:20:57Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"jE+xWLOt7wiwP7cDovSIcNWpwn2xTw5uscXO52HUSFBoaTxDLQe/vvyAh5zHe2YWkOTj2T1QrT7T8vxKvpihAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-25T07:59:19.181845Z"},"content_sha256":"c53bcab50691b0986c9715887fc6238981923afe3fc2ad0f500de47b7a338f80","schema_version":"1.0","event_id":"sha256:c53bcab50691b0986c9715887fc6238981923afe3fc2ad0f500de47b7a338f80"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2010:KXGQAASMAIPTHHQF5K22FD33SV","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Spatial Guilds in the Serengeti Food Web Revealed by a Bayesian Group Model","license":"http://creativecommons.org/licenses/by/3.0/","headline":"","cross_cats":[],"primary_cat":"q-bio.PE","authors_text":"Andy P. Dobson, Edward B. Baskerville, Mercedes Pascual, Stefano Allesina, Trevor Bedford","submitted_at":"2010-11-17T21:23:29Z","abstract_excerpt":"Food webs, networks of feeding relationships among organisms, provide fundamental insights into mechanisms that determine ecosystem stability and persistence. Despite long-standing interest in the compartmental structure of food webs, past network analyses of food webs have been constrained by a standard definition of compartments, or modules, that requires many links within compartments and few links between them. Empirical analyses have been further limited by low-resolution data for primary producers. In this paper, we present a Bayesian computational method for identifying group structure "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1011.4080","kind":"arxiv","version":2},"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":"2026-05-18T03:20:57Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Z2CKfjVDhG2qiXhjEVp7NCz745GTIXBPP2slnqaBgwuccj5UDACewEG2tRpul3kh4H0nE/ezx5q2QOQH3FsWCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-25T07:59:19.182190Z"},"content_sha256":"673a357ee86e4f6d98f6d1354866a489132c96a3c6d4c29e3384a1cf9c98e47a","schema_version":"1.0","event_id":"sha256:673a357ee86e4f6d98f6d1354866a489132c96a3c6d4c29e3384a1cf9c98e47a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/KXGQAASMAIPTHHQF5K22FD33SV/bundle.json","state_url":"https://pith.science/pith/KXGQAASMAIPTHHQF5K22FD33SV/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/KXGQAASMAIPTHHQF5K22FD33SV/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":"2026-06-25T07:59:19Z","links":{"resolver":"https://pith.science/pith/KXGQAASMAIPTHHQF5K22FD33SV","bundle":"https://pith.science/pith/KXGQAASMAIPTHHQF5K22FD33SV/bundle.json","state":"https://pith.science/pith/KXGQAASMAIPTHHQF5K22FD33SV/state.json","well_known_bundle":"https://pith.science/.well-known/pith/KXGQAASMAIPTHHQF5K22FD33SV/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:KXGQAASMAIPTHHQF5K22FD33SV","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":"5be220945127cea13fafb869590463b7545d303ab8a090fe33eb02335f279201","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/3.0/","primary_cat":"q-bio.PE","submitted_at":"2010-11-17T21:23:29Z","title_canon_sha256":"d0c63b4b5ae9691beba1ab4e03d6237526a2304fb2209036b1e7246312143dae"},"schema_version":"1.0","source":{"id":"1011.4080","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1011.4080","created_at":"2026-05-18T03:20:57Z"},{"alias_kind":"arxiv_version","alias_value":"1011.4080v2","created_at":"2026-05-18T03:20:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1011.4080","created_at":"2026-05-18T03:20:57Z"},{"alias_kind":"pith_short_12","alias_value":"KXGQAASMAIPT","created_at":"2026-05-18T12:26:09Z"},{"alias_kind":"pith_short_16","alias_value":"KXGQAASMAIPTHHQF","created_at":"2026-05-18T12:26:09Z"},{"alias_kind":"pith_short_8","alias_value":"KXGQAASM","created_at":"2026-05-18T12:26:09Z"}],"graph_snapshots":[{"event_id":"sha256:673a357ee86e4f6d98f6d1354866a489132c96a3c6d4c29e3384a1cf9c98e47a","target":"graph","created_at":"2026-05-18T03:20:57Z","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":"Food webs, networks of feeding relationships among organisms, provide fundamental insights into mechanisms that determine ecosystem stability and persistence. Despite long-standing interest in the compartmental structure of food webs, past network analyses of food webs have been constrained by a standard definition of compartments, or modules, that requires many links within compartments and few links between them. Empirical analyses have been further limited by low-resolution data for primary producers. In this paper, we present a Bayesian computational method for identifying group structure ","authors_text":"Andy P. Dobson, Edward B. Baskerville, Mercedes Pascual, Stefano Allesina, Trevor Bedford","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/3.0/","primary_cat":"q-bio.PE","submitted_at":"2010-11-17T21:23:29Z","title":"Spatial Guilds in the Serengeti Food Web Revealed by a Bayesian Group Model"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1011.4080","kind":"arxiv","version":2},"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:c53bcab50691b0986c9715887fc6238981923afe3fc2ad0f500de47b7a338f80","target":"record","created_at":"2026-05-18T03:20:57Z","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":"5be220945127cea13fafb869590463b7545d303ab8a090fe33eb02335f279201","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/3.0/","primary_cat":"q-bio.PE","submitted_at":"2010-11-17T21:23:29Z","title_canon_sha256":"d0c63b4b5ae9691beba1ab4e03d6237526a2304fb2209036b1e7246312143dae"},"schema_version":"1.0","source":{"id":"1011.4080","kind":"arxiv","version":2}},"canonical_sha256":"55cd00024c021f339e05eab5a28f7b9541f61f60875e8e96595d65999558e0b5","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"55cd00024c021f339e05eab5a28f7b9541f61f60875e8e96595d65999558e0b5","first_computed_at":"2026-05-18T03:20:57.325408Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:20:57.325408Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"2DYbyR2kkiDMVWJ2su6XrCQCQQZZuGSfo+4FNRmfRH7gF0DoKllCJv9QYvJ+2KGe+1Re5LShAEeOIXxQlZSKDA==","signature_status":"signed_v1","signed_at":"2026-05-18T03:20:57.325926Z","signed_message":"canonical_sha256_bytes"},"source_id":"1011.4080","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c53bcab50691b0986c9715887fc6238981923afe3fc2ad0f500de47b7a338f80","sha256:673a357ee86e4f6d98f6d1354866a489132c96a3c6d4c29e3384a1cf9c98e47a"],"state_sha256":"342e4ba7a4acf7f6bb9e532ec8de15f553345edcd5a71548b8fbc034959c9437"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"MhqfPd66rjCxDdZvdzbecsOxGVJIoMAeWajitGIAATO5boFpTIaKqkcLnu7q5TvdmV59BAx5O4/vT6oa66KnCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-25T07:59:19.184160Z","bundle_sha256":"5401a346a3d155da4b7ef03b88b6d200a1c80da77c92bcc9b86a71b1f3983174"}}