{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:IONVLXKDSFQVSABJ47QEMMU5TM","short_pith_number":"pith:IONVLXKD","canonical_record":{"source":{"id":"2006.08999","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2020-06-16T08:54:04Z","cross_cats_sorted":["cs.LG","nlin.CD"],"title_canon_sha256":"cba2b46b0f54a4d9be50b8b98c1a3b4454691196eec90ba2b4f35778fa193d9d","abstract_canon_sha256":"721a386f165a31a241433b02faa5b0b80b4dcac3aca92b66642289bb93b1c04d"},"schema_version":"1.0"},"canonical_sha256":"439b55dd439161590029e7e046329d9b285a6661a229e8e4276e3e5ddd3b8eef","source":{"kind":"arxiv","id":"2006.08999","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2006.08999","created_at":"2026-07-05T01:44:13Z"},{"alias_kind":"arxiv_version","alias_value":"2006.08999v2","created_at":"2026-07-05T01:44:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2006.08999","created_at":"2026-07-05T01:44:13Z"},{"alias_kind":"pith_short_12","alias_value":"IONVLXKDSFQV","created_at":"2026-07-05T01:44:13Z"},{"alias_kind":"pith_short_16","alias_value":"IONVLXKDSFQVSABJ","created_at":"2026-07-05T01:44:13Z"},{"alias_kind":"pith_short_8","alias_value":"IONVLXKD","created_at":"2026-07-05T01:44:13Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:IONVLXKDSFQVSABJ47QEMMU5TM","target":"record","payload":{"canonical_record":{"source":{"id":"2006.08999","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2020-06-16T08:54:04Z","cross_cats_sorted":["cs.LG","nlin.CD"],"title_canon_sha256":"cba2b46b0f54a4d9be50b8b98c1a3b4454691196eec90ba2b4f35778fa193d9d","abstract_canon_sha256":"721a386f165a31a241433b02faa5b0b80b4dcac3aca92b66642289bb93b1c04d"},"schema_version":"1.0"},"canonical_sha256":"439b55dd439161590029e7e046329d9b285a6661a229e8e4276e3e5ddd3b8eef","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:44:13.873497Z","signature_b64":"lle30YB6nVQEMPbJkKarGNzzcXMXFN+oOUwLAiUjxBJIdM3M3BR3FN49w0mfDpX1Yem7lqOEhtQV8EbCrU8FCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"439b55dd439161590029e7e046329d9b285a6661a229e8e4276e3e5ddd3b8eef","last_reissued_at":"2026-07-05T01:44:13.873059Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:44:13.873059Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2006.08999","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":"2026-07-05T01:44:13Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"JmP7fuMJz/MYcpJX0MB45NCs82uFdPIfqgNKyPJHPWBnTD80mKcA+4nF0gapS5+arb4pi392vnnAKjL3KWwYDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T09:57:53.109537Z"},"content_sha256":"f3fc7c3d7046e35d6ff03d8cbb31c77a054026724999263d0bcd95cffbfe61bd","schema_version":"1.0","event_id":"sha256:f3fc7c3d7046e35d6ff03d8cbb31c77a054026724999263d0bcd95cffbfe61bd"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:IONVLXKDSFQVSABJ47QEMMU5TM","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Higher-Order Quantum Reservoir Computing","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.LG","nlin.CD"],"primary_cat":"quant-ph","authors_text":"Kohei Nakajima, Quoc Hoan Tran","submitted_at":"2020-06-16T08:54:04Z","abstract_excerpt":"Quantum reservoir computing (QRC) is an emerging paradigm for harnessing the natural dynamics of quantum systems as computational resources that can be used for temporal machine learning tasks. In the current setup, QRC is difficult to deal with high-dimensional data and has a major drawback of scalability in physical implementations. We propose higher-order QRC, a hybrid quantum-classical framework consisting of multiple but small quantum systems that are mutually communicated via classical connections like linear feedback. By utilizing the advantages of both classical and quantum techniques,"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2006.08999","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2006.08999/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T01:44:13Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"U2yfhQz97UYAVCMYwUjSMk+/SfQLXwn3qkiIY2votHVdBoGjzQFmivmwi7kPaSePrtQRnHtm6A8dVfLGLHqwDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T09:57:53.110151Z"},"content_sha256":"f4045b0eb4e37357a51b8b12b33a8353a4c835d086243c0e08977354e398f605","schema_version":"1.0","event_id":"sha256:f4045b0eb4e37357a51b8b12b33a8353a4c835d086243c0e08977354e398f605"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/IONVLXKDSFQVSABJ47QEMMU5TM/bundle.json","state_url":"https://pith.science/pith/IONVLXKDSFQVSABJ47QEMMU5TM/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/IONVLXKDSFQVSABJ47QEMMU5TM/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":"2026-08-04T09:57:53Z","links":{"resolver":"https://pith.science/pith/IONVLXKDSFQVSABJ47QEMMU5TM","bundle":"https://pith.science/pith/IONVLXKDSFQVSABJ47QEMMU5TM/bundle.json","state":"https://pith.science/pith/IONVLXKDSFQVSABJ47QEMMU5TM/state.json","well_known_bundle":"https://pith.science/.well-known/pith/IONVLXKDSFQVSABJ47QEMMU5TM/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:IONVLXKDSFQVSABJ47QEMMU5TM","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":"721a386f165a31a241433b02faa5b0b80b4dcac3aca92b66642289bb93b1c04d","cross_cats_sorted":["cs.LG","nlin.CD"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2020-06-16T08:54:04Z","title_canon_sha256":"cba2b46b0f54a4d9be50b8b98c1a3b4454691196eec90ba2b4f35778fa193d9d"},"schema_version":"1.0","source":{"id":"2006.08999","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2006.08999","created_at":"2026-07-05T01:44:13Z"},{"alias_kind":"arxiv_version","alias_value":"2006.08999v2","created_at":"2026-07-05T01:44:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2006.08999","created_at":"2026-07-05T01:44:13Z"},{"alias_kind":"pith_short_12","alias_value":"IONVLXKDSFQV","created_at":"2026-07-05T01:44:13Z"},{"alias_kind":"pith_short_16","alias_value":"IONVLXKDSFQVSABJ","created_at":"2026-07-05T01:44:13Z"},{"alias_kind":"pith_short_8","alias_value":"IONVLXKD","created_at":"2026-07-05T01:44:13Z"}],"graph_snapshots":[{"event_id":"sha256:f4045b0eb4e37357a51b8b12b33a8353a4c835d086243c0e08977354e398f605","target":"graph","created_at":"2026-07-05T01:44:13Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2006.08999/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Quantum reservoir computing (QRC) is an emerging paradigm for harnessing the natural dynamics of quantum systems as computational resources that can be used for temporal machine learning tasks. In the current setup, QRC is difficult to deal with high-dimensional data and has a major drawback of scalability in physical implementations. We propose higher-order QRC, a hybrid quantum-classical framework consisting of multiple but small quantum systems that are mutually communicated via classical connections like linear feedback. By utilizing the advantages of both classical and quantum techniques,","authors_text":"Kohei Nakajima, Quoc Hoan Tran","cross_cats":["cs.LG","nlin.CD"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2020-06-16T08:54:04Z","title":"Higher-Order Quantum Reservoir Computing"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2006.08999","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:f3fc7c3d7046e35d6ff03d8cbb31c77a054026724999263d0bcd95cffbfe61bd","target":"record","created_at":"2026-07-05T01:44:13Z","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":"721a386f165a31a241433b02faa5b0b80b4dcac3aca92b66642289bb93b1c04d","cross_cats_sorted":["cs.LG","nlin.CD"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2020-06-16T08:54:04Z","title_canon_sha256":"cba2b46b0f54a4d9be50b8b98c1a3b4454691196eec90ba2b4f35778fa193d9d"},"schema_version":"1.0","source":{"id":"2006.08999","kind":"arxiv","version":2}},"canonical_sha256":"439b55dd439161590029e7e046329d9b285a6661a229e8e4276e3e5ddd3b8eef","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"439b55dd439161590029e7e046329d9b285a6661a229e8e4276e3e5ddd3b8eef","first_computed_at":"2026-07-05T01:44:13.873059Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:44:13.873059Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"lle30YB6nVQEMPbJkKarGNzzcXMXFN+oOUwLAiUjxBJIdM3M3BR3FN49w0mfDpX1Yem7lqOEhtQV8EbCrU8FCg==","signature_status":"signed_v1","signed_at":"2026-07-05T01:44:13.873497Z","signed_message":"canonical_sha256_bytes"},"source_id":"2006.08999","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f3fc7c3d7046e35d6ff03d8cbb31c77a054026724999263d0bcd95cffbfe61bd","sha256:f4045b0eb4e37357a51b8b12b33a8353a4c835d086243c0e08977354e398f605"],"state_sha256":"61c24a468dc019e9d0f765267da50a61ee58e0a5a2fa4f1b6652fc35297ee53a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"98oD8snpOitko30wYiN660f7AktCJRLxY44TaA2qQQqiK+iNKeUtOvsiqmdzlyWGC3XBD8kWxJ6yldCFfsupAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-04T09:57:53.116425Z","bundle_sha256":"98b2e807576f3e8075ad009b10e96afd784caca7974278dcf150f848069c07bf"}}