{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:E6GQJBWPGWKMQQXRQSLVQT4AXG","short_pith_number":"pith:E6GQJBWP","canonical_record":{"source":{"id":"1701.04398","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.med-ph","submitted_at":"2017-01-03T10:58:25Z","cross_cats_sorted":["stat.ML"],"title_canon_sha256":"bdeef6cedcba2d9b8b44a424918e0db787f21ecede35c214873804c83d9170f6","abstract_canon_sha256":"98061281ba0ba1840284b2cecb4a743e3ebe3a01ddd09b663a5bbeee953953d9"},"schema_version":"1.0"},"canonical_sha256":"278d0486cf3594c842f18497584f80b9be5b518efbc69b8ddceb61d3253d6bc3","source":{"kind":"arxiv","id":"1701.04398","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1701.04398","created_at":"2026-05-18T00:52:44Z"},{"alias_kind":"arxiv_version","alias_value":"1701.04398v1","created_at":"2026-05-18T00:52:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1701.04398","created_at":"2026-05-18T00:52:44Z"},{"alias_kind":"pith_short_12","alias_value":"E6GQJBWPGWKM","created_at":"2026-05-18T12:31:12Z"},{"alias_kind":"pith_short_16","alias_value":"E6GQJBWPGWKMQQXR","created_at":"2026-05-18T12:31:12Z"},{"alias_kind":"pith_short_8","alias_value":"E6GQJBWP","created_at":"2026-05-18T12:31:12Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:E6GQJBWPGWKMQQXRQSLVQT4AXG","target":"record","payload":{"canonical_record":{"source":{"id":"1701.04398","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.med-ph","submitted_at":"2017-01-03T10:58:25Z","cross_cats_sorted":["stat.ML"],"title_canon_sha256":"bdeef6cedcba2d9b8b44a424918e0db787f21ecede35c214873804c83d9170f6","abstract_canon_sha256":"98061281ba0ba1840284b2cecb4a743e3ebe3a01ddd09b663a5bbeee953953d9"},"schema_version":"1.0"},"canonical_sha256":"278d0486cf3594c842f18497584f80b9be5b518efbc69b8ddceb61d3253d6bc3","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:52:44.742451Z","signature_b64":"bHthHN17piNbnfaYYz6NunuEDsQRM3G651F1/jCb59LZHe80Tt82qDpRPyz0boHrb6i2P886LmyIUzjfCyChBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"278d0486cf3594c842f18497584f80b9be5b518efbc69b8ddceb61d3253d6bc3","last_reissued_at":"2026-05-18T00:52:44.741964Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:52:44.741964Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1701.04398","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":"2026-05-18T00:52:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ZgWOA22td/LQjNj9ZUC4s67+3XcU1Ci8BtRL/Nemmo6/3a99AEdIhaj9HQJT4SiczDxVIBou0P8fmeDvg+w6Dw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-11T05:15:12.316914Z"},"content_sha256":"27a55fb3482449eb8f099cb1482997b90ba528011a601ebfbd6f79d168b16906","schema_version":"1.0","event_id":"sha256:27a55fb3482449eb8f099cb1482997b90ba528011a601ebfbd6f79d168b16906"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:E6GQJBWPGWKMQQXRQSLVQT4AXG","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Automatic sleep monitoring using ear-EEG","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["stat.ML"],"primary_cat":"physics.med-ph","authors_text":"Danilo P. Mandic, Mary J. Morrell, Takashi Nakamura, Valentin Goverdovsky","submitted_at":"2017-01-03T10:58:25Z","abstract_excerpt":"The monitoring of sleep patterns without patient's inconvenience or involvement of a medical specialist is a clinical question of significant importance. To this end, we propose an automatic sleep stage monitoring system based on an affordable, unobtrusive, discreet, and long-term wearable in-ear sensor for recording the Electroencephalogram (ear-EEG). The selected features for sleep pattern classification from a single ear-EEG channel include the spectral edge frequency (SEF) and multi- scale fuzzy entropy (MSFE), a structural complexity feature. In this preliminary study, the manually scored"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1701.04398","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":"2026-05-18T00:52:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"47rDi4NUdKmn5WshfUbT9LrIpwyB3ero2UfjU/VsrNZv90iFDcB2ybD6OThj6+BtRcCn1kh79IcNRCxQJmwUAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-11T05:15:12.317628Z"},"content_sha256":"099cf02d3db83a62116d96e0500d5682b5cc6833cb8df1d94884f25f32de5635","schema_version":"1.0","event_id":"sha256:099cf02d3db83a62116d96e0500d5682b5cc6833cb8df1d94884f25f32de5635"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/E6GQJBWPGWKMQQXRQSLVQT4AXG/bundle.json","state_url":"https://pith.science/pith/E6GQJBWPGWKMQQXRQSLVQT4AXG/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/E6GQJBWPGWKMQQXRQSLVQT4AXG/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":"2026-06-11T05:15:12Z","links":{"resolver":"https://pith.science/pith/E6GQJBWPGWKMQQXRQSLVQT4AXG","bundle":"https://pith.science/pith/E6GQJBWPGWKMQQXRQSLVQT4AXG/bundle.json","state":"https://pith.science/pith/E6GQJBWPGWKMQQXRQSLVQT4AXG/state.json","well_known_bundle":"https://pith.science/.well-known/pith/E6GQJBWPGWKMQQXRQSLVQT4AXG/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:E6GQJBWPGWKMQQXRQSLVQT4AXG","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":"98061281ba0ba1840284b2cecb4a743e3ebe3a01ddd09b663a5bbeee953953d9","cross_cats_sorted":["stat.ML"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.med-ph","submitted_at":"2017-01-03T10:58:25Z","title_canon_sha256":"bdeef6cedcba2d9b8b44a424918e0db787f21ecede35c214873804c83d9170f6"},"schema_version":"1.0","source":{"id":"1701.04398","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1701.04398","created_at":"2026-05-18T00:52:44Z"},{"alias_kind":"arxiv_version","alias_value":"1701.04398v1","created_at":"2026-05-18T00:52:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1701.04398","created_at":"2026-05-18T00:52:44Z"},{"alias_kind":"pith_short_12","alias_value":"E6GQJBWPGWKM","created_at":"2026-05-18T12:31:12Z"},{"alias_kind":"pith_short_16","alias_value":"E6GQJBWPGWKMQQXR","created_at":"2026-05-18T12:31:12Z"},{"alias_kind":"pith_short_8","alias_value":"E6GQJBWP","created_at":"2026-05-18T12:31:12Z"}],"graph_snapshots":[{"event_id":"sha256:099cf02d3db83a62116d96e0500d5682b5cc6833cb8df1d94884f25f32de5635","target":"graph","created_at":"2026-05-18T00:52:44Z","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 monitoring of sleep patterns without patient's inconvenience or involvement of a medical specialist is a clinical question of significant importance. To this end, we propose an automatic sleep stage monitoring system based on an affordable, unobtrusive, discreet, and long-term wearable in-ear sensor for recording the Electroencephalogram (ear-EEG). The selected features for sleep pattern classification from a single ear-EEG channel include the spectral edge frequency (SEF) and multi- scale fuzzy entropy (MSFE), a structural complexity feature. In this preliminary study, the manually scored","authors_text":"Danilo P. Mandic, Mary J. Morrell, Takashi Nakamura, Valentin Goverdovsky","cross_cats":["stat.ML"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.med-ph","submitted_at":"2017-01-03T10:58:25Z","title":"Automatic sleep monitoring using ear-EEG"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1701.04398","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":"sha256:27a55fb3482449eb8f099cb1482997b90ba528011a601ebfbd6f79d168b16906","target":"record","created_at":"2026-05-18T00:52:44Z","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":"98061281ba0ba1840284b2cecb4a743e3ebe3a01ddd09b663a5bbeee953953d9","cross_cats_sorted":["stat.ML"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.med-ph","submitted_at":"2017-01-03T10:58:25Z","title_canon_sha256":"bdeef6cedcba2d9b8b44a424918e0db787f21ecede35c214873804c83d9170f6"},"schema_version":"1.0","source":{"id":"1701.04398","kind":"arxiv","version":1}},"canonical_sha256":"278d0486cf3594c842f18497584f80b9be5b518efbc69b8ddceb61d3253d6bc3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"278d0486cf3594c842f18497584f80b9be5b518efbc69b8ddceb61d3253d6bc3","first_computed_at":"2026-05-18T00:52:44.741964Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:52:44.741964Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"bHthHN17piNbnfaYYz6NunuEDsQRM3G651F1/jCb59LZHe80Tt82qDpRPyz0boHrb6i2P886LmyIUzjfCyChBA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:52:44.742451Z","signed_message":"canonical_sha256_bytes"},"source_id":"1701.04398","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:27a55fb3482449eb8f099cb1482997b90ba528011a601ebfbd6f79d168b16906","sha256:099cf02d3db83a62116d96e0500d5682b5cc6833cb8df1d94884f25f32de5635"],"state_sha256":"e38555af7b3540d00a07848af6c37453c70a239448284f83c4b1168fc6902576"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"VmOMg/FHnjvxcDiR5OtKVPzKyiqBOghCrtlh6wGxRJ+4zIjvKr6PaOD8cc+xNPP7anBdd8B3fEf1ce/tS1cxDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-11T05:15:12.321760Z","bundle_sha256":"d3129475c4e4ab7553c1cc4693998c23459e4f6df9da5e5fead6ea0652466d93"}}