{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:IM2IRE44MRXSHMRAPWYMAK5KIE","short_pith_number":"pith:IM2IRE44","canonical_record":{"source":{"id":"1807.04334","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.NC","submitted_at":"2018-07-11T20:07:27Z","cross_cats_sorted":[],"title_canon_sha256":"0cd6dff2a284b6cc4986bcd014ee467b7fa5167646b946bd87aa2ef743b93ce3","abstract_canon_sha256":"df16e7be5c5675134ca3f89b2358d88848161e6c7e397d21fa667739a4be89b8"},"schema_version":"1.0"},"canonical_sha256":"433488939c646f23b2207db0c02baa410a804213bde2c0dcaf589dbf7e387b81","source":{"kind":"arxiv","id":"1807.04334","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1807.04334","created_at":"2026-05-18T00:01:58Z"},{"alias_kind":"arxiv_version","alias_value":"1807.04334v1","created_at":"2026-05-18T00:01:58Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1807.04334","created_at":"2026-05-18T00:01:58Z"},{"alias_kind":"pith_short_12","alias_value":"IM2IRE44MRXS","created_at":"2026-05-18T12:32:31Z"},{"alias_kind":"pith_short_16","alias_value":"IM2IRE44MRXSHMRA","created_at":"2026-05-18T12:32:31Z"},{"alias_kind":"pith_short_8","alias_value":"IM2IRE44","created_at":"2026-05-18T12:32:31Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:IM2IRE44MRXSHMRAPWYMAK5KIE","target":"record","payload":{"canonical_record":{"source":{"id":"1807.04334","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.NC","submitted_at":"2018-07-11T20:07:27Z","cross_cats_sorted":[],"title_canon_sha256":"0cd6dff2a284b6cc4986bcd014ee467b7fa5167646b946bd87aa2ef743b93ce3","abstract_canon_sha256":"df16e7be5c5675134ca3f89b2358d88848161e6c7e397d21fa667739a4be89b8"},"schema_version":"1.0"},"canonical_sha256":"433488939c646f23b2207db0c02baa410a804213bde2c0dcaf589dbf7e387b81","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:01:58.638562Z","signature_b64":"9Y9kzhXL43lGZkqnq+alZIf5foH9CXusgF9MfWVXk+wEcpljLdeMEXQnQ426gbdUygqn+MCFJ5cgRxWgN4CvCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"433488939c646f23b2207db0c02baa410a804213bde2c0dcaf589dbf7e387b81","last_reissued_at":"2026-05-18T00:01:58.637404Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:01:58.637404Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1807.04334","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":"2026-05-18T00:01:58Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"nThsD5klNlih1Co2nt+KDEh5hdnVR+O9RRs5RCFf571LZZbwA145FGQiPA2R/1Ucp9868WEPMSP31aqrtDxwBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T22:18:57.239128Z"},"content_sha256":"99e5fb2d87d03a331a5cf7c165ce7638ad5423c804eeffcbd811fd7feef9a8de","schema_version":"1.0","event_id":"sha256:99e5fb2d87d03a331a5cf7c165ce7638ad5423c804eeffcbd811fd7feef9a8de"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:IM2IRE44MRXSHMRAPWYMAK5KIE","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Analyzing P300 Distractors for Target Reconstruction","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"q-bio.NC","authors_text":"Amelia J. Solon, Jonathan R. McDaniel, Stephen M. Gordon, Vernon J. Lawhern","submitted_at":"2018-07-11T20:07:27Z","abstract_excerpt":"P300-based brain-computer interfaces (BCIs) are often trained per-user and per-application space. Training such models requires ground truth knowledge of target and non-target stimulus categories during model training, which imparts bias into the model. Additionally, not all non-targets are created equal; some may contain visual features that resemble targets or may otherwise be visually salient. Current research has indicated that non-target distractors may elicit attenuated P300 responses based on the perceptual similarity of these distractors to the target category. To minimize this bias, a"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1807.04334","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":"2026-05-18T00:01:58Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"fmFtfXK2ykfTZW/sHFWH69yNSopcW7J6PRKn1XTfQn/zORiuf1I6mQQP+k8slRTTL6G5zjDsiGbOzUCwtTUJBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T22:18:57.239827Z"},"content_sha256":"5768e121a2c1638b04500ff4983e9ecc9224d07e6c44e1faed6661ef1eaf5b29","schema_version":"1.0","event_id":"sha256:5768e121a2c1638b04500ff4983e9ecc9224d07e6c44e1faed6661ef1eaf5b29"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/IM2IRE44MRXSHMRAPWYMAK5KIE/bundle.json","state_url":"https://pith.science/pith/IM2IRE44MRXSHMRAPWYMAK5KIE/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/IM2IRE44MRXSHMRAPWYMAK5KIE/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":"2026-06-04T22:18:57Z","links":{"resolver":"https://pith.science/pith/IM2IRE44MRXSHMRAPWYMAK5KIE","bundle":"https://pith.science/pith/IM2IRE44MRXSHMRAPWYMAK5KIE/bundle.json","state":"https://pith.science/pith/IM2IRE44MRXSHMRAPWYMAK5KIE/state.json","well_known_bundle":"https://pith.science/.well-known/pith/IM2IRE44MRXSHMRAPWYMAK5KIE/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:IM2IRE44MRXSHMRAPWYMAK5KIE","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":"df16e7be5c5675134ca3f89b2358d88848161e6c7e397d21fa667739a4be89b8","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.NC","submitted_at":"2018-07-11T20:07:27Z","title_canon_sha256":"0cd6dff2a284b6cc4986bcd014ee467b7fa5167646b946bd87aa2ef743b93ce3"},"schema_version":"1.0","source":{"id":"1807.04334","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1807.04334","created_at":"2026-05-18T00:01:58Z"},{"alias_kind":"arxiv_version","alias_value":"1807.04334v1","created_at":"2026-05-18T00:01:58Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1807.04334","created_at":"2026-05-18T00:01:58Z"},{"alias_kind":"pith_short_12","alias_value":"IM2IRE44MRXS","created_at":"2026-05-18T12:32:31Z"},{"alias_kind":"pith_short_16","alias_value":"IM2IRE44MRXSHMRA","created_at":"2026-05-18T12:32:31Z"},{"alias_kind":"pith_short_8","alias_value":"IM2IRE44","created_at":"2026-05-18T12:32:31Z"}],"graph_snapshots":[{"event_id":"sha256:5768e121a2c1638b04500ff4983e9ecc9224d07e6c44e1faed6661ef1eaf5b29","target":"graph","created_at":"2026-05-18T00:01:58Z","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":"P300-based brain-computer interfaces (BCIs) are often trained per-user and per-application space. Training such models requires ground truth knowledge of target and non-target stimulus categories during model training, which imparts bias into the model. Additionally, not all non-targets are created equal; some may contain visual features that resemble targets or may otherwise be visually salient. Current research has indicated that non-target distractors may elicit attenuated P300 responses based on the perceptual similarity of these distractors to the target category. To minimize this bias, a","authors_text":"Amelia J. Solon, Jonathan R. McDaniel, Stephen M. Gordon, Vernon J. Lawhern","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.NC","submitted_at":"2018-07-11T20:07:27Z","title":"Analyzing P300 Distractors for Target Reconstruction"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1807.04334","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":"sha256:99e5fb2d87d03a331a5cf7c165ce7638ad5423c804eeffcbd811fd7feef9a8de","target":"record","created_at":"2026-05-18T00:01:58Z","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":"df16e7be5c5675134ca3f89b2358d88848161e6c7e397d21fa667739a4be89b8","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.NC","submitted_at":"2018-07-11T20:07:27Z","title_canon_sha256":"0cd6dff2a284b6cc4986bcd014ee467b7fa5167646b946bd87aa2ef743b93ce3"},"schema_version":"1.0","source":{"id":"1807.04334","kind":"arxiv","version":1}},"canonical_sha256":"433488939c646f23b2207db0c02baa410a804213bde2c0dcaf589dbf7e387b81","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"433488939c646f23b2207db0c02baa410a804213bde2c0dcaf589dbf7e387b81","first_computed_at":"2026-05-18T00:01:58.637404Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:01:58.637404Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"9Y9kzhXL43lGZkqnq+alZIf5foH9CXusgF9MfWVXk+wEcpljLdeMEXQnQ426gbdUygqn+MCFJ5cgRxWgN4CvCA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:01:58.638562Z","signed_message":"canonical_sha256_bytes"},"source_id":"1807.04334","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:99e5fb2d87d03a331a5cf7c165ce7638ad5423c804eeffcbd811fd7feef9a8de","sha256:5768e121a2c1638b04500ff4983e9ecc9224d07e6c44e1faed6661ef1eaf5b29"],"state_sha256":"f77556491cb91bac610eb87e8de415e86afd8a70c44acd70db69391dbd2c5f24"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9qTK0csHdBAyUvkoVRvbwjGSnepLGXCywkvhucAZEbAB/mQ+S7/xbXEdwxTBz49Giti1dbkmgdRxB3gADaTrBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-04T22:18:57.243558Z","bundle_sha256":"4fdf13186551125bf2926b47d37992f5e1e69d1f31f826fe7d99d76b52b824d4"}}