{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:KGB6EJLRT3BNJRSBEXQJ6W5CCI","short_pith_number":"pith:KGB6EJLR","canonical_record":{"source":{"id":"1104.1946","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.NC","submitted_at":"2011-04-11T13:38:22Z","cross_cats_sorted":["physics.bio-ph"],"title_canon_sha256":"db93cbb683b5ef318da67e67958599b7512e15f6af17244757103f4ea665bd88","abstract_canon_sha256":"727ad5dd2c0b93c17e430a7035f7c4d301eb4f90a67cf4406d824e1da09bbc31"},"schema_version":"1.0"},"canonical_sha256":"5183e225719ec2d4c64125e09f5ba21227e5f86f986b5e6fc8eda5b80299b332","source":{"kind":"arxiv","id":"1104.1946","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1104.1946","created_at":"2026-05-18T02:22:10Z"},{"alias_kind":"arxiv_version","alias_value":"1104.1946v2","created_at":"2026-05-18T02:22:10Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1104.1946","created_at":"2026-05-18T02:22:10Z"},{"alias_kind":"pith_short_12","alias_value":"KGB6EJLRT3BN","created_at":"2026-05-18T12:26:32Z"},{"alias_kind":"pith_short_16","alias_value":"KGB6EJLRT3BNJRSB","created_at":"2026-05-18T12:26:32Z"},{"alias_kind":"pith_short_8","alias_value":"KGB6EJLR","created_at":"2026-05-18T12:26:32Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:KGB6EJLRT3BNJRSBEXQJ6W5CCI","target":"record","payload":{"canonical_record":{"source":{"id":"1104.1946","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.NC","submitted_at":"2011-04-11T13:38:22Z","cross_cats_sorted":["physics.bio-ph"],"title_canon_sha256":"db93cbb683b5ef318da67e67958599b7512e15f6af17244757103f4ea665bd88","abstract_canon_sha256":"727ad5dd2c0b93c17e430a7035f7c4d301eb4f90a67cf4406d824e1da09bbc31"},"schema_version":"1.0"},"canonical_sha256":"5183e225719ec2d4c64125e09f5ba21227e5f86f986b5e6fc8eda5b80299b332","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:22:10.052565Z","signature_b64":"zD7Kd4sAWEoVQLl4Gr4Mw+VZJjURv/KV7W1aqAZRNHAhfKVNFQ7mOugMy/LWG6u1ZloNQk3qDXt9RkqkajSVCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"5183e225719ec2d4c64125e09f5ba21227e5f86f986b5e6fc8eda5b80299b332","last_reissued_at":"2026-05-18T02:22:10.052016Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:22:10.052016Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1104.1946","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":"2026-05-18T02:22:10Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"DPZxamCYga986qQ/MVRpBbJJ0Nk5ZHNG38DTms7iwilOZBwMouZ1qWN9ggafV1OG4xyPdEzPxMalkrmzEJQ/Bg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T20:33:48.792435Z"},"content_sha256":"fe6d8257fe001d0630fc1ed0a5c4caa2b6ac6c1bd694c74addfa9c2ff23ab32c","schema_version":"1.0","event_id":"sha256:fe6d8257fe001d0630fc1ed0a5c4caa2b6ac6c1bd694c74addfa9c2ff23ab32c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:KGB6EJLRT3BNJRSBEXQJ6W5CCI","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Coverage, Continuity and Visual Cortical Architecture","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.bio-ph"],"primary_cat":"q-bio.NC","authors_text":"Fred Wolf, Wolfgang Keil","submitted_at":"2011-04-11T13:38:22Z","abstract_excerpt":"The primary visual cortex of many mammals contains a continuous representation of visual space, with a roughly repetitive aperiodic map of orientation preferences superimposed. It was recently found that orientation preference maps (OPMs) obey statistical laws which are apparently invariant among species widely separated in eutherian evolution. Here, we examine whether one of the most prominent models for the optimization of cortical maps, the elastic net (EN) model, can reproduce this common design. The EN model generates representations which optimally trade of stimulus space coverage and ma"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1104.1946","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":"2026-05-18T02:22:10Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"7dmi4nJaD59Cy9jPT0euQ//+m2sDL4oI1qTj/fDzYAcfdFguDUOhC2DQdaSKkHek6T7k1iiNQQhdQBhYr4MFCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T20:33:48.793093Z"},"content_sha256":"0541ca2c4e9ac99bf7f9a33d9f9af60a98e10224a510958a22b2bdea9414aa88","schema_version":"1.0","event_id":"sha256:0541ca2c4e9ac99bf7f9a33d9f9af60a98e10224a510958a22b2bdea9414aa88"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/KGB6EJLRT3BNJRSBEXQJ6W5CCI/bundle.json","state_url":"https://pith.science/pith/KGB6EJLRT3BNJRSBEXQJ6W5CCI/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/KGB6EJLRT3BNJRSBEXQJ6W5CCI/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":"2026-06-04T20:33:48Z","links":{"resolver":"https://pith.science/pith/KGB6EJLRT3BNJRSBEXQJ6W5CCI","bundle":"https://pith.science/pith/KGB6EJLRT3BNJRSBEXQJ6W5CCI/bundle.json","state":"https://pith.science/pith/KGB6EJLRT3BNJRSBEXQJ6W5CCI/state.json","well_known_bundle":"https://pith.science/.well-known/pith/KGB6EJLRT3BNJRSBEXQJ6W5CCI/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:KGB6EJLRT3BNJRSBEXQJ6W5CCI","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":"727ad5dd2c0b93c17e430a7035f7c4d301eb4f90a67cf4406d824e1da09bbc31","cross_cats_sorted":["physics.bio-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.NC","submitted_at":"2011-04-11T13:38:22Z","title_canon_sha256":"db93cbb683b5ef318da67e67958599b7512e15f6af17244757103f4ea665bd88"},"schema_version":"1.0","source":{"id":"1104.1946","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1104.1946","created_at":"2026-05-18T02:22:10Z"},{"alias_kind":"arxiv_version","alias_value":"1104.1946v2","created_at":"2026-05-18T02:22:10Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1104.1946","created_at":"2026-05-18T02:22:10Z"},{"alias_kind":"pith_short_12","alias_value":"KGB6EJLRT3BN","created_at":"2026-05-18T12:26:32Z"},{"alias_kind":"pith_short_16","alias_value":"KGB6EJLRT3BNJRSB","created_at":"2026-05-18T12:26:32Z"},{"alias_kind":"pith_short_8","alias_value":"KGB6EJLR","created_at":"2026-05-18T12:26:32Z"}],"graph_snapshots":[{"event_id":"sha256:0541ca2c4e9ac99bf7f9a33d9f9af60a98e10224a510958a22b2bdea9414aa88","target":"graph","created_at":"2026-05-18T02:22:10Z","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 primary visual cortex of many mammals contains a continuous representation of visual space, with a roughly repetitive aperiodic map of orientation preferences superimposed. It was recently found that orientation preference maps (OPMs) obey statistical laws which are apparently invariant among species widely separated in eutherian evolution. Here, we examine whether one of the most prominent models for the optimization of cortical maps, the elastic net (EN) model, can reproduce this common design. The EN model generates representations which optimally trade of stimulus space coverage and ma","authors_text":"Fred Wolf, Wolfgang Keil","cross_cats":["physics.bio-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.NC","submitted_at":"2011-04-11T13:38:22Z","title":"Coverage, Continuity and Visual Cortical Architecture"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1104.1946","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:fe6d8257fe001d0630fc1ed0a5c4caa2b6ac6c1bd694c74addfa9c2ff23ab32c","target":"record","created_at":"2026-05-18T02:22:10Z","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":"727ad5dd2c0b93c17e430a7035f7c4d301eb4f90a67cf4406d824e1da09bbc31","cross_cats_sorted":["physics.bio-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.NC","submitted_at":"2011-04-11T13:38:22Z","title_canon_sha256":"db93cbb683b5ef318da67e67958599b7512e15f6af17244757103f4ea665bd88"},"schema_version":"1.0","source":{"id":"1104.1946","kind":"arxiv","version":2}},"canonical_sha256":"5183e225719ec2d4c64125e09f5ba21227e5f86f986b5e6fc8eda5b80299b332","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"5183e225719ec2d4c64125e09f5ba21227e5f86f986b5e6fc8eda5b80299b332","first_computed_at":"2026-05-18T02:22:10.052016Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:22:10.052016Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"zD7Kd4sAWEoVQLl4Gr4Mw+VZJjURv/KV7W1aqAZRNHAhfKVNFQ7mOugMy/LWG6u1ZloNQk3qDXt9RkqkajSVCw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:22:10.052565Z","signed_message":"canonical_sha256_bytes"},"source_id":"1104.1946","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:fe6d8257fe001d0630fc1ed0a5c4caa2b6ac6c1bd694c74addfa9c2ff23ab32c","sha256:0541ca2c4e9ac99bf7f9a33d9f9af60a98e10224a510958a22b2bdea9414aa88"],"state_sha256":"7ae76e4e1d0fe03475ef987e50974e1e3840f9107cc92d25e999523236a48c5d"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"PfGzSd/uvXaFTfA2Xpo6xoFa81AwmCOQ6SHksCWf3vEoJGT09AYyEQ+9tnQ8gldxEtlP9DW8oVgsvRGoI2IuDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-04T20:33:48.796443Z","bundle_sha256":"1aa8eb5e6f24c0ba50d56a475dd5db9ce7de7e132140b7dc6006ca5f6d24517a"}}