{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:OHUJH2YVDRMMNTHZGNQ4K62FOE","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":"ce08cf662a6a9ec7cc283c8e12049b38b50ef466d9ef53afde78fc50c87f5e22","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.LG","submitted_at":"2022-07-13T15:17:26Z","title_canon_sha256":"34e4951ccf58da4e0b8f7cfc8efd93616f68a77f551cb87315310edab2b372ae"},"schema_version":"1.0","source":{"id":"2207.06269","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2207.06269","created_at":"2026-07-05T04:40:03Z"},{"alias_kind":"arxiv_version","alias_value":"2207.06269v1","created_at":"2026-07-05T04:40:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2207.06269","created_at":"2026-07-05T04:40:03Z"},{"alias_kind":"pith_short_12","alias_value":"OHUJH2YVDRMM","created_at":"2026-07-05T04:40:03Z"},{"alias_kind":"pith_short_16","alias_value":"OHUJH2YVDRMMNTHZ","created_at":"2026-07-05T04:40:03Z"},{"alias_kind":"pith_short_8","alias_value":"OHUJH2YV","created_at":"2026-07-05T04:40:03Z"}],"graph_snapshots":[{"event_id":"sha256:dc105c2186fb4cdb768c6a6eb2ec13ba632395a67084e8bca3f81cdbf435bc6c","target":"graph","created_at":"2026-07-05T04:40:03Z","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/2207.06269/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We develop a Reinforcement Learning (RL) framework for improving an existing behavior policy via sparse, user-interpretable changes. Our goal is to make minimal changes while gaining as much benefit as possible. We define a minimal change as having a sparse, global contrastive explanation between the original and proposed policy. We improve the current policy with the constraint of keeping that global contrastive explanation short. We demonstrate our framework with a discrete MDP and a continuous 2D navigation domain.","authors_text":"Finale Doshi-Velez, Jiayu Yao, Sonali Parbhoo, Weiwei Pan","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.LG","submitted_at":"2022-07-13T15:17:26Z","title":"Policy Optimization with Sparse Global Contrastive Explanations"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2207.06269","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":"sha256:9740cb8302c6f6ed86226d03511a788ea4cabc309d6bd2b9af70c2cff757a00f","target":"record","created_at":"2026-07-05T04:40:03Z","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":"ce08cf662a6a9ec7cc283c8e12049b38b50ef466d9ef53afde78fc50c87f5e22","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.LG","submitted_at":"2022-07-13T15:17:26Z","title_canon_sha256":"34e4951ccf58da4e0b8f7cfc8efd93616f68a77f551cb87315310edab2b372ae"},"schema_version":"1.0","source":{"id":"2207.06269","kind":"arxiv","version":1}},"canonical_sha256":"71e893eb151c58c6ccf93361c57b457135a9e83b7e0d125f2db71c7ce6bed72b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"71e893eb151c58c6ccf93361c57b457135a9e83b7e0d125f2db71c7ce6bed72b","first_computed_at":"2026-07-05T04:40:03.388247Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T04:40:03.388247Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"4sapHZsgwU3mbz1pJU7M+2mZBijvrMnU6TnndgbQHXENKx4WIu2blH/dfONDDUeVG7jopP/K9cyByQu7FYdnCA==","signature_status":"signed_v1","signed_at":"2026-07-05T04:40:03.388805Z","signed_message":"canonical_sha256_bytes"},"source_id":"2207.06269","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9740cb8302c6f6ed86226d03511a788ea4cabc309d6bd2b9af70c2cff757a00f","sha256:dc105c2186fb4cdb768c6a6eb2ec13ba632395a67084e8bca3f81cdbf435bc6c"],"state_sha256":"d84f6c53188004900af426a780a00d30885ef401123579f011aed2d654f3491d"}