{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:ZURFG3U4KKKEKWNTIYANC6YY4M","short_pith_number":"pith:ZURFG3U4","canonical_record":{"source":{"id":"1703.02929","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.HC","submitted_at":"2017-03-08T17:35:00Z","cross_cats_sorted":[],"title_canon_sha256":"904f573a0e2c8cac25d5e4ad71def2866ad4e537ae187259ed20cd595804bf71","abstract_canon_sha256":"76655bd7c90cd35b6ff11ad4505c4736092116a93dd6b0dc880110de71e231de"},"schema_version":"1.0"},"canonical_sha256":"cd22536e9c52944559b34600d17b18e3203222282457214a088eaf3eda609021","source":{"kind":"arxiv","id":"1703.02929","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1703.02929","created_at":"2026-05-18T00:49:05Z"},{"alias_kind":"arxiv_version","alias_value":"1703.02929v1","created_at":"2026-05-18T00:49:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1703.02929","created_at":"2026-05-18T00:49:05Z"},{"alias_kind":"pith_short_12","alias_value":"ZURFG3U4KKKE","created_at":"2026-05-18T12:31:59Z"},{"alias_kind":"pith_short_16","alias_value":"ZURFG3U4KKKEKWNT","created_at":"2026-05-18T12:31:59Z"},{"alias_kind":"pith_short_8","alias_value":"ZURFG3U4","created_at":"2026-05-18T12:31:59Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:ZURFG3U4KKKEKWNTIYANC6YY4M","target":"record","payload":{"canonical_record":{"source":{"id":"1703.02929","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.HC","submitted_at":"2017-03-08T17:35:00Z","cross_cats_sorted":[],"title_canon_sha256":"904f573a0e2c8cac25d5e4ad71def2866ad4e537ae187259ed20cd595804bf71","abstract_canon_sha256":"76655bd7c90cd35b6ff11ad4505c4736092116a93dd6b0dc880110de71e231de"},"schema_version":"1.0"},"canonical_sha256":"cd22536e9c52944559b34600d17b18e3203222282457214a088eaf3eda609021","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:49:05.293654Z","signature_b64":"i5ANmPrjLAVre5q50RZnlV06uke4w8g0US/bF2bpPdqGAeYRoIYJPM6Tvd/EE6f8SGraFf1q9ClCHgJFhQqmDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"cd22536e9c52944559b34600d17b18e3203222282457214a088eaf3eda609021","last_reissued_at":"2026-05-18T00:49:05.293154Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:49:05.293154Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1703.02929","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":"2026-05-18T00:49:05Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6p//QAchBAOH8SX6YSOkTnPosPqaepDsu52PwS95xW+nQNwla0nOgw1/QUI7sH5GI3dTUyGYFKeJTd5CsvxcAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T11:36:43.983216Z"},"content_sha256":"7b33383d990992836345e3c9db32d245c9b9e04bf8c6ce5273844fb469821a73","schema_version":"1.0","event_id":"sha256:7b33383d990992836345e3c9db32d245c9b9e04bf8c6ce5273844fb469821a73"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:ZURFG3U4KKKEKWNTIYANC6YY4M","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Decoding Complex Imagery Hand Gestures","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.HC","authors_text":"Alexander Piers, Deniz Erdogmus, Fernando Quivira, Hooman Nezamfar, Mohammad Moghadamfalahi, Seyed Sadegh Mohseni Salehi","submitted_at":"2017-03-08T17:35:00Z","abstract_excerpt":"Brain computer interfaces (BCIs) offer individuals suffering from major disabilities an alternative method to interact with their environment. Sensorimotor rhythm (SMRs) based BCIs can successfully perform control tasks; however, the traditional SMR paradigms intuitively disconnect the control and real task, making them non-ideal for complex control scenarios. In this study, we design a new, intuitively connected motor imagery (MI) paradigm using hierarchical common spatial patterns (HCSP) and context information to effectively predict intended hand grasps from electroencephalogram (EEG) data."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1703.02929","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":"2026-05-18T00:49:05Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Kcu9EzXuiiH4mugUyZIDOMnA6feQI+tW6GiqCg0FNxtplAkqxapdlMmchBUFfX2qieNNJJfZG0EM8HgOEwC0Bw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T11:36:43.983958Z"},"content_sha256":"b717e6f254b42148489143cbbb29603a08c65b527c63648628bcb2f742e5cc7b","schema_version":"1.0","event_id":"sha256:b717e6f254b42148489143cbbb29603a08c65b527c63648628bcb2f742e5cc7b"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ZURFG3U4KKKEKWNTIYANC6YY4M/bundle.json","state_url":"https://pith.science/pith/ZURFG3U4KKKEKWNTIYANC6YY4M/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ZURFG3U4KKKEKWNTIYANC6YY4M/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":"2026-05-26T11:36:43Z","links":{"resolver":"https://pith.science/pith/ZURFG3U4KKKEKWNTIYANC6YY4M","bundle":"https://pith.science/pith/ZURFG3U4KKKEKWNTIYANC6YY4M/bundle.json","state":"https://pith.science/pith/ZURFG3U4KKKEKWNTIYANC6YY4M/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ZURFG3U4KKKEKWNTIYANC6YY4M/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:ZURFG3U4KKKEKWNTIYANC6YY4M","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":"76655bd7c90cd35b6ff11ad4505c4736092116a93dd6b0dc880110de71e231de","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.HC","submitted_at":"2017-03-08T17:35:00Z","title_canon_sha256":"904f573a0e2c8cac25d5e4ad71def2866ad4e537ae187259ed20cd595804bf71"},"schema_version":"1.0","source":{"id":"1703.02929","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1703.02929","created_at":"2026-05-18T00:49:05Z"},{"alias_kind":"arxiv_version","alias_value":"1703.02929v1","created_at":"2026-05-18T00:49:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1703.02929","created_at":"2026-05-18T00:49:05Z"},{"alias_kind":"pith_short_12","alias_value":"ZURFG3U4KKKE","created_at":"2026-05-18T12:31:59Z"},{"alias_kind":"pith_short_16","alias_value":"ZURFG3U4KKKEKWNT","created_at":"2026-05-18T12:31:59Z"},{"alias_kind":"pith_short_8","alias_value":"ZURFG3U4","created_at":"2026-05-18T12:31:59Z"}],"graph_snapshots":[{"event_id":"sha256:b717e6f254b42148489143cbbb29603a08c65b527c63648628bcb2f742e5cc7b","target":"graph","created_at":"2026-05-18T00:49:05Z","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":"Brain computer interfaces (BCIs) offer individuals suffering from major disabilities an alternative method to interact with their environment. Sensorimotor rhythm (SMRs) based BCIs can successfully perform control tasks; however, the traditional SMR paradigms intuitively disconnect the control and real task, making them non-ideal for complex control scenarios. In this study, we design a new, intuitively connected motor imagery (MI) paradigm using hierarchical common spatial patterns (HCSP) and context information to effectively predict intended hand grasps from electroencephalogram (EEG) data.","authors_text":"Alexander Piers, Deniz Erdogmus, Fernando Quivira, Hooman Nezamfar, Mohammad Moghadamfalahi, Seyed Sadegh Mohseni Salehi","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.HC","submitted_at":"2017-03-08T17:35:00Z","title":"Decoding Complex Imagery Hand Gestures"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1703.02929","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":"sha256:7b33383d990992836345e3c9db32d245c9b9e04bf8c6ce5273844fb469821a73","target":"record","created_at":"2026-05-18T00:49:05Z","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":"76655bd7c90cd35b6ff11ad4505c4736092116a93dd6b0dc880110de71e231de","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.HC","submitted_at":"2017-03-08T17:35:00Z","title_canon_sha256":"904f573a0e2c8cac25d5e4ad71def2866ad4e537ae187259ed20cd595804bf71"},"schema_version":"1.0","source":{"id":"1703.02929","kind":"arxiv","version":1}},"canonical_sha256":"cd22536e9c52944559b34600d17b18e3203222282457214a088eaf3eda609021","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"cd22536e9c52944559b34600d17b18e3203222282457214a088eaf3eda609021","first_computed_at":"2026-05-18T00:49:05.293154Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:49:05.293154Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"i5ANmPrjLAVre5q50RZnlV06uke4w8g0US/bF2bpPdqGAeYRoIYJPM6Tvd/EE6f8SGraFf1q9ClCHgJFhQqmDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:49:05.293654Z","signed_message":"canonical_sha256_bytes"},"source_id":"1703.02929","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7b33383d990992836345e3c9db32d245c9b9e04bf8c6ce5273844fb469821a73","sha256:b717e6f254b42148489143cbbb29603a08c65b527c63648628bcb2f742e5cc7b"],"state_sha256":"a7b01449774de978fa8d94beb193879623f38348e9d63cb1fe9048a78391b4fb"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Dulzd6yCg2U5plqojWsxILeGTXWthcdUguAlpDBy5HILKdoTTExFs6GaeBlumfTzrHMc3Ry3SfMeW70qLAHNAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T11:36:43.986144Z","bundle_sha256":"f2a289d6d68827df5dc7ebf3488907a9ae10fd60d995dcc5d41433e0acd3fc5e"}}