{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2024:ARR66C6BRBN4N4CTWZUMX2DAUP","short_pith_number":"pith:ARR66C6B","canonical_record":{"source":{"id":"2406.06714","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.LG","submitted_at":"2024-06-10T18:23:03Z","cross_cats_sorted":["cs.AI","cs.HC"],"title_canon_sha256":"d4794e2301eea5412d80173db2d73c20b4187a86bfef98c490cbe4bb0a554485","abstract_canon_sha256":"690fa50f542cac8c9955ac6306189980c36784c277279149121b7b56f0f2ddfd"},"schema_version":"1.0"},"canonical_sha256":"0463ef0bc1885bc6f053b668cbe860a3c91d67b2e377002f19199839a9ffaa6b","source":{"kind":"arxiv","id":"2406.06714","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2406.06714","created_at":"2026-07-05T09:28:51Z"},{"alias_kind":"arxiv_version","alias_value":"2406.06714v2","created_at":"2026-07-05T09:28:51Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2406.06714","created_at":"2026-07-05T09:28:51Z"},{"alias_kind":"pith_short_12","alias_value":"ARR66C6BRBN4","created_at":"2026-07-05T09:28:51Z"},{"alias_kind":"pith_short_16","alias_value":"ARR66C6BRBN4N4CT","created_at":"2026-07-05T09:28:51Z"},{"alias_kind":"pith_short_8","alias_value":"ARR66C6B","created_at":"2026-07-05T09:28:51Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2024:ARR66C6BRBN4N4CTWZUMX2DAUP","target":"record","payload":{"canonical_record":{"source":{"id":"2406.06714","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.LG","submitted_at":"2024-06-10T18:23:03Z","cross_cats_sorted":["cs.AI","cs.HC"],"title_canon_sha256":"d4794e2301eea5412d80173db2d73c20b4187a86bfef98c490cbe4bb0a554485","abstract_canon_sha256":"690fa50f542cac8c9955ac6306189980c36784c277279149121b7b56f0f2ddfd"},"schema_version":"1.0"},"canonical_sha256":"0463ef0bc1885bc6f053b668cbe860a3c91d67b2e377002f19199839a9ffaa6b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T09:28:51.100456Z","signature_b64":"1EmDVtxC+QCgHpg5m+T2lO9td4w8MvaBtWFjZb+PlWFr7N0O+e5AUSz0GWDwD+6V212xlg/vI4OtvROXBEd8Cw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"0463ef0bc1885bc6f053b668cbe860a3c91d67b2e377002f19199839a9ffaa6b","last_reissued_at":"2026-07-05T09:28:51.100020Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T09:28:51.100020Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2406.06714","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":"2026-07-05T09:28:51Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"CdeTLgW6osqmtUWVLpHQjQinr9/TqkLIFgnRt27lPjmft/XbqW3enVm4vyJ+gjCeb8+yvFnR6Gz5uLXTp0tUAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T04:54:17.483930Z"},"content_sha256":"1c0bb5dda21dd2b294a7aa3e6ac75a4734a41f2c81a4c0a950ab0421e199a382","schema_version":"1.0","event_id":"sha256:1c0bb5dda21dd2b294a7aa3e6ac75a4734a41f2c81a4c0a950ab0421e199a382"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2024:ARR66C6BRBN4N4CTWZUMX2DAUP","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Coprocessor Actor Critic: A Model-Based Reinforcement Learning Approach For Adaptive Brain Stimulation","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["cs.AI","cs.HC"],"primary_cat":"cs.LG","authors_text":"Anca Dragan, Erdem B{\\i}y{\\i}k, Mariah Schrum, Michelle Pan, Vivek Myers","submitted_at":"2024-06-10T18:23:03Z","abstract_excerpt":"Adaptive brain stimulation can treat neurological conditions such as Parkinson's disease and post-stroke motor deficits by influencing abnormal neural activity. Because of patient heterogeneity, each patient requires a unique stimulation policy to achieve optimal neural responses. Model-free reinforcement learning (MFRL) holds promise in learning effective policies for a variety of similar control tasks, but is limited in domains like brain stimulation by a need for numerous costly environment interactions. In this work we introduce Coprocessor Actor Critic, a novel, model-based reinforcement "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2406.06714","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/2406.06714/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":"2026-07-05T09:28:51Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"n32sFOtrKv60MEIzsp1UURzyoFe3RiEkGwzSQJAIDQuB4NrPWMjPZ4Z9OI3JgpbPjBFsGHx6CoA1RUyVQ4sFBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T04:54:17.484302Z"},"content_sha256":"fd39d7d7d8015f11e77bba6fe2819d0df611577c5301794773329ab03cbb67d8","schema_version":"1.0","event_id":"sha256:fd39d7d7d8015f11e77bba6fe2819d0df611577c5301794773329ab03cbb67d8"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ARR66C6BRBN4N4CTWZUMX2DAUP/bundle.json","state_url":"https://pith.science/pith/ARR66C6BRBN4N4CTWZUMX2DAUP/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ARR66C6BRBN4N4CTWZUMX2DAUP/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":"2026-07-07T04:54:17Z","links":{"resolver":"https://pith.science/pith/ARR66C6BRBN4N4CTWZUMX2DAUP","bundle":"https://pith.science/pith/ARR66C6BRBN4N4CTWZUMX2DAUP/bundle.json","state":"https://pith.science/pith/ARR66C6BRBN4N4CTWZUMX2DAUP/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ARR66C6BRBN4N4CTWZUMX2DAUP/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:ARR66C6BRBN4N4CTWZUMX2DAUP","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":"690fa50f542cac8c9955ac6306189980c36784c277279149121b7b56f0f2ddfd","cross_cats_sorted":["cs.AI","cs.HC"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.LG","submitted_at":"2024-06-10T18:23:03Z","title_canon_sha256":"d4794e2301eea5412d80173db2d73c20b4187a86bfef98c490cbe4bb0a554485"},"schema_version":"1.0","source":{"id":"2406.06714","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2406.06714","created_at":"2026-07-05T09:28:51Z"},{"alias_kind":"arxiv_version","alias_value":"2406.06714v2","created_at":"2026-07-05T09:28:51Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2406.06714","created_at":"2026-07-05T09:28:51Z"},{"alias_kind":"pith_short_12","alias_value":"ARR66C6BRBN4","created_at":"2026-07-05T09:28:51Z"},{"alias_kind":"pith_short_16","alias_value":"ARR66C6BRBN4N4CT","created_at":"2026-07-05T09:28:51Z"},{"alias_kind":"pith_short_8","alias_value":"ARR66C6B","created_at":"2026-07-05T09:28:51Z"}],"graph_snapshots":[{"event_id":"sha256:fd39d7d7d8015f11e77bba6fe2819d0df611577c5301794773329ab03cbb67d8","target":"graph","created_at":"2026-07-05T09:28:51Z","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/2406.06714/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Adaptive brain stimulation can treat neurological conditions such as Parkinson's disease and post-stroke motor deficits by influencing abnormal neural activity. Because of patient heterogeneity, each patient requires a unique stimulation policy to achieve optimal neural responses. Model-free reinforcement learning (MFRL) holds promise in learning effective policies for a variety of similar control tasks, but is limited in domains like brain stimulation by a need for numerous costly environment interactions. In this work we introduce Coprocessor Actor Critic, a novel, model-based reinforcement ","authors_text":"Anca Dragan, Erdem B{\\i}y{\\i}k, Mariah Schrum, Michelle Pan, Vivek Myers","cross_cats":["cs.AI","cs.HC"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.LG","submitted_at":"2024-06-10T18:23:03Z","title":"Coprocessor Actor Critic: A Model-Based Reinforcement Learning Approach For Adaptive Brain Stimulation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2406.06714","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":"sha256:1c0bb5dda21dd2b294a7aa3e6ac75a4734a41f2c81a4c0a950ab0421e199a382","target":"record","created_at":"2026-07-05T09:28:51Z","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":"690fa50f542cac8c9955ac6306189980c36784c277279149121b7b56f0f2ddfd","cross_cats_sorted":["cs.AI","cs.HC"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.LG","submitted_at":"2024-06-10T18:23:03Z","title_canon_sha256":"d4794e2301eea5412d80173db2d73c20b4187a86bfef98c490cbe4bb0a554485"},"schema_version":"1.0","source":{"id":"2406.06714","kind":"arxiv","version":2}},"canonical_sha256":"0463ef0bc1885bc6f053b668cbe860a3c91d67b2e377002f19199839a9ffaa6b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0463ef0bc1885bc6f053b668cbe860a3c91d67b2e377002f19199839a9ffaa6b","first_computed_at":"2026-07-05T09:28:51.100020Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T09:28:51.100020Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"1EmDVtxC+QCgHpg5m+T2lO9td4w8MvaBtWFjZb+PlWFr7N0O+e5AUSz0GWDwD+6V212xlg/vI4OtvROXBEd8Cw==","signature_status":"signed_v1","signed_at":"2026-07-05T09:28:51.100456Z","signed_message":"canonical_sha256_bytes"},"source_id":"2406.06714","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1c0bb5dda21dd2b294a7aa3e6ac75a4734a41f2c81a4c0a950ab0421e199a382","sha256:fd39d7d7d8015f11e77bba6fe2819d0df611577c5301794773329ab03cbb67d8"],"state_sha256":"6fe80e0281b4f00d02b1e20778b16cf124c6fe58d3f7e4b1c59430d276ae5953"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"owBkpAEqeOiw1ItZ534tbnjy9H5cn6aYWhyncGPjYO0jm8VyUKK25jlilh96HMSdtKE3haUs6jL+bHlcinPMBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-07T04:54:17.487378Z","bundle_sha256":"b138e515e412eb527a526f2bb0aa41d27cae447b65a4564d31bdb2f8a2dfdcdd"}}