{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:U6QESCETLJOQ6O7XE7G2Y6FNAL","short_pith_number":"pith:U6QESCET","canonical_record":{"source":{"id":"1907.05861","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.AI","submitted_at":"2019-07-11T09:42:47Z","cross_cats_sorted":[],"title_canon_sha256":"fc3c1cb8576099647b4569e8e7997aeed60d94ca0ed117c687533a2f2ba95e68","abstract_canon_sha256":"39926e5546a9a276f05885684170afa670ad59a77fb14dbca10250ff69c3625c"},"schema_version":"1.0"},"canonical_sha256":"a7a04908935a5d0f3bf727cdac78ad02f386f8ad6419c2977fe873467cab1c9a","source":{"kind":"arxiv","id":"1907.05861","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1907.05861","created_at":"2026-07-05T07:28:24Z"},{"alias_kind":"arxiv_version","alias_value":"1907.05861v2","created_at":"2026-07-05T07:28:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1907.05861","created_at":"2026-07-05T07:28:24Z"},{"alias_kind":"pith_short_12","alias_value":"U6QESCETLJOQ","created_at":"2026-07-05T07:28:24Z"},{"alias_kind":"pith_short_16","alias_value":"U6QESCETLJOQ6O7X","created_at":"2026-07-05T07:28:24Z"},{"alias_kind":"pith_short_8","alias_value":"U6QESCET","created_at":"2026-07-05T07:28:24Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:U6QESCETLJOQ6O7XE7G2Y6FNAL","target":"record","payload":{"canonical_record":{"source":{"id":"1907.05861","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.AI","submitted_at":"2019-07-11T09:42:47Z","cross_cats_sorted":[],"title_canon_sha256":"fc3c1cb8576099647b4569e8e7997aeed60d94ca0ed117c687533a2f2ba95e68","abstract_canon_sha256":"39926e5546a9a276f05885684170afa670ad59a77fb14dbca10250ff69c3625c"},"schema_version":"1.0"},"canonical_sha256":"a7a04908935a5d0f3bf727cdac78ad02f386f8ad6419c2977fe873467cab1c9a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T07:28:24.535334Z","signature_b64":"dWJfaxidRi1jsqYo1r0SJUj+GXHyl3CXM1g66HGMDqrjk0ipyY+CM1+JPVCwWIQZ7O1K8TSVnKlU34MelzVzCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a7a04908935a5d0f3bf727cdac78ad02f386f8ad6419c2977fe873467cab1c9a","last_reissued_at":"2026-07-05T07:28:24.534788Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T07:28:24.534788Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1907.05861","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":"2026-07-05T07:28:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"mPwdMLtgNnXUFmqWqY42r9ZlnbhoW6BwSKkPDU/nCoKVhqnBwDODEABRNsKaAT5q67hf/0ObdtAb5Gvtgl63AQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-01T00:34:45.556337Z"},"content_sha256":"8fc192c1879ef5caad88ce537ad0cbd2aa1c00dad2da8909d62fbac601f0888e","schema_version":"1.0","event_id":"sha256:8fc192c1879ef5caad88ce537ad0cbd2aa1c00dad2da8909d62fbac601f0888e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:U6QESCETLJOQ6O7XE7G2Y6FNAL","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Adaptive Thompson Sampling Stacks for Memory Bounded Open-Loop Planning","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.AI","authors_text":"Christoph Roch, Claudia Linnhoff-Popien, Robert M\\\"uller, Thomas Gabor, Thomy Phan","submitted_at":"2019-07-11T09:42:47Z","abstract_excerpt":"We propose Stable Yet Memory Bounded Open-Loop (SYMBOL) planning, a general memory bounded approach to partially observable open-loop planning. SYMBOL maintains an adaptive stack of Thompson Sampling bandits, whose size is bounded by the planning horizon and can be automatically adapted according to the underlying domain without any prior domain knowledge beyond a generative model. We empirically test SYMBOL in four large POMDP benchmark problems to demonstrate its effectiveness and robustness w.r.t. the choice of hyperparameters and evaluate its adaptive memory consumption. We also compare it"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1907.05861","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/1907.05861/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":"2026-07-05T07:28:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"lRaS4qrxiTy1+qPJ2yWRMLAL89JpZZ9C1zqcW80AWyAPQnu4bP0MXLxKN844ahAsq20daWsdk4MaZWkeD1JpCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-01T00:34:45.556769Z"},"content_sha256":"f45a21a97a7aae0ff15a2f150cceae7f091ad1ea7b59904f443fa4fcd20232e2","schema_version":"1.0","event_id":"sha256:f45a21a97a7aae0ff15a2f150cceae7f091ad1ea7b59904f443fa4fcd20232e2"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/U6QESCETLJOQ6O7XE7G2Y6FNAL/bundle.json","state_url":"https://pith.science/pith/U6QESCETLJOQ6O7XE7G2Y6FNAL/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/U6QESCETLJOQ6O7XE7G2Y6FNAL/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":"2026-08-01T00:34:45Z","links":{"resolver":"https://pith.science/pith/U6QESCETLJOQ6O7XE7G2Y6FNAL","bundle":"https://pith.science/pith/U6QESCETLJOQ6O7XE7G2Y6FNAL/bundle.json","state":"https://pith.science/pith/U6QESCETLJOQ6O7XE7G2Y6FNAL/state.json","well_known_bundle":"https://pith.science/.well-known/pith/U6QESCETLJOQ6O7XE7G2Y6FNAL/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:U6QESCETLJOQ6O7XE7G2Y6FNAL","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":"39926e5546a9a276f05885684170afa670ad59a77fb14dbca10250ff69c3625c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.AI","submitted_at":"2019-07-11T09:42:47Z","title_canon_sha256":"fc3c1cb8576099647b4569e8e7997aeed60d94ca0ed117c687533a2f2ba95e68"},"schema_version":"1.0","source":{"id":"1907.05861","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1907.05861","created_at":"2026-07-05T07:28:24Z"},{"alias_kind":"arxiv_version","alias_value":"1907.05861v2","created_at":"2026-07-05T07:28:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1907.05861","created_at":"2026-07-05T07:28:24Z"},{"alias_kind":"pith_short_12","alias_value":"U6QESCETLJOQ","created_at":"2026-07-05T07:28:24Z"},{"alias_kind":"pith_short_16","alias_value":"U6QESCETLJOQ6O7X","created_at":"2026-07-05T07:28:24Z"},{"alias_kind":"pith_short_8","alias_value":"U6QESCET","created_at":"2026-07-05T07:28:24Z"}],"graph_snapshots":[{"event_id":"sha256:f45a21a97a7aae0ff15a2f150cceae7f091ad1ea7b59904f443fa4fcd20232e2","target":"graph","created_at":"2026-07-05T07:28:24Z","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/1907.05861/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We propose Stable Yet Memory Bounded Open-Loop (SYMBOL) planning, a general memory bounded approach to partially observable open-loop planning. SYMBOL maintains an adaptive stack of Thompson Sampling bandits, whose size is bounded by the planning horizon and can be automatically adapted according to the underlying domain without any prior domain knowledge beyond a generative model. We empirically test SYMBOL in four large POMDP benchmark problems to demonstrate its effectiveness and robustness w.r.t. the choice of hyperparameters and evaluate its adaptive memory consumption. We also compare it","authors_text":"Christoph Roch, Claudia Linnhoff-Popien, Robert M\\\"uller, Thomas Gabor, Thomy Phan","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.AI","submitted_at":"2019-07-11T09:42:47Z","title":"Adaptive Thompson Sampling Stacks for Memory Bounded Open-Loop Planning"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1907.05861","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":"sha256:8fc192c1879ef5caad88ce537ad0cbd2aa1c00dad2da8909d62fbac601f0888e","target":"record","created_at":"2026-07-05T07:28:24Z","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":"39926e5546a9a276f05885684170afa670ad59a77fb14dbca10250ff69c3625c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.AI","submitted_at":"2019-07-11T09:42:47Z","title_canon_sha256":"fc3c1cb8576099647b4569e8e7997aeed60d94ca0ed117c687533a2f2ba95e68"},"schema_version":"1.0","source":{"id":"1907.05861","kind":"arxiv","version":2}},"canonical_sha256":"a7a04908935a5d0f3bf727cdac78ad02f386f8ad6419c2977fe873467cab1c9a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a7a04908935a5d0f3bf727cdac78ad02f386f8ad6419c2977fe873467cab1c9a","first_computed_at":"2026-07-05T07:28:24.534788Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T07:28:24.534788Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"dWJfaxidRi1jsqYo1r0SJUj+GXHyl3CXM1g66HGMDqrjk0ipyY+CM1+JPVCwWIQZ7O1K8TSVnKlU34MelzVzCg==","signature_status":"signed_v1","signed_at":"2026-07-05T07:28:24.535334Z","signed_message":"canonical_sha256_bytes"},"source_id":"1907.05861","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8fc192c1879ef5caad88ce537ad0cbd2aa1c00dad2da8909d62fbac601f0888e","sha256:f45a21a97a7aae0ff15a2f150cceae7f091ad1ea7b59904f443fa4fcd20232e2"],"state_sha256":"28de4dd154b2312177d26c66c58db32ce84cf3ddba84b05ba74b7312a5ec38bb"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"e+B6plCudsQ7z5JCzQK/wcjeWGUDpBM9abUtCNhla3l7SZ9tqmtT+08NXTj0NOGnefqOpDqSA2iTIhSwkRs9Bg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-01T00:34:45.561463Z","bundle_sha256":"87ac63308b6281287c8b88cadc6e102a0994e6c2d76213efe56d2bd6859384ce"}}