{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:JJQU2IKKNDWXXXV5V6ODCC4DR4","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":"dcf4950b7a0157d4254c0c56ca51c073ca407c3f46236b8c3147337b1b1f8e2a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.AI","submitted_at":"2013-02-06T15:59:30Z","title_canon_sha256":"5c2af61ebefd879852a65662bd70eecedcf5fb5eb206249e0179c8b3d5d6f593"},"schema_version":"1.0","source":{"id":"1302.1573","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1302.1573","created_at":"2026-05-18T03:34:15Z"},{"alias_kind":"arxiv_version","alias_value":"1302.1573v1","created_at":"2026-05-18T03:34:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1302.1573","created_at":"2026-05-18T03:34:15Z"},{"alias_kind":"pith_short_12","alias_value":"JJQU2IKKNDWX","created_at":"2026-05-18T12:27:49Z"},{"alias_kind":"pith_short_16","alias_value":"JJQU2IKKNDWXXXV5","created_at":"2026-05-18T12:27:49Z"},{"alias_kind":"pith_short_8","alias_value":"JJQU2IKK","created_at":"2026-05-18T12:27:49Z"}],"graph_snapshots":[{"event_id":"sha256:a115b13b5c5b5b8949454aea1fea64e0ff37a27b108e064337b5e308aea109a1","target":"graph","created_at":"2026-05-18T03:34:15Z","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":"This paper is concerned with planning in stochastic domains by means of partially observable Markov decision processes (POMDPs).  POMDPs are difficult to solve.  This paper identifies a  subclass of POMDPs called region observable POMDPs, which are easier to solve and can be used to approximate general POMDPs to arbitrary accuracy.","authors_text":"Nevin Lianwen Zhang, Wenju Liu","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.AI","submitted_at":"2013-02-06T15:59:30Z","title":"Region-Based Approximations for Planning in Stochastic Domains"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1302.1573","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":"sha256:7cf51933e291a1bd841ce563ffa0a4fce0cf3ac29e1cbfce4127918202fff157","target":"record","created_at":"2026-05-18T03:34:15Z","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":"dcf4950b7a0157d4254c0c56ca51c073ca407c3f46236b8c3147337b1b1f8e2a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.AI","submitted_at":"2013-02-06T15:59:30Z","title_canon_sha256":"5c2af61ebefd879852a65662bd70eecedcf5fb5eb206249e0179c8b3d5d6f593"},"schema_version":"1.0","source":{"id":"1302.1573","kind":"arxiv","version":1}},"canonical_sha256":"4a614d214a68ed7bdebdaf9c310b838f0ef4ed6ac97982194cda27f2f0a1b34a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4a614d214a68ed7bdebdaf9c310b838f0ef4ed6ac97982194cda27f2f0a1b34a","first_computed_at":"2026-05-18T03:34:15.382668Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:34:15.382668Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"25BmB+wOIwwE3w/9V+Q7XnNygAlVs5oKclGckZ5pHXVqCzy03BdCnT8iDvHY4DfAwkql32qqUz79IJtm/MhnCA==","signature_status":"signed_v1","signed_at":"2026-05-18T03:34:15.383403Z","signed_message":"canonical_sha256_bytes"},"source_id":"1302.1573","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7cf51933e291a1bd841ce563ffa0a4fce0cf3ac29e1cbfce4127918202fff157","sha256:a115b13b5c5b5b8949454aea1fea64e0ff37a27b108e064337b5e308aea109a1"],"state_sha256":"6517fe35e2eb42182626f6615da622aa93b88975ffba08bc6c30f92552b0a1c6"}