{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:YONVZQ7RSJNPBMT7J3VZEIMRZP","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":"f39fa4fcb533e72d2aa8841b73edc2ca048793fe84e4e0171ab4d0e1c687c4a9","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.comp-ph","submitted_at":"2020-06-28T16:27:26Z","title_canon_sha256":"131edd317b96df78020e69c12ebad61c61e7704cd347c20b40da6a0a6cf46378"},"schema_version":"1.0","source":{"id":"2006.15644","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2006.15644","created_at":"2026-07-05T01:14:07Z"},{"alias_kind":"arxiv_version","alias_value":"2006.15644v1","created_at":"2026-07-05T01:14:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2006.15644","created_at":"2026-07-05T01:14:07Z"},{"alias_kind":"pith_short_12","alias_value":"YONVZQ7RSJNP","created_at":"2026-07-05T01:14:07Z"},{"alias_kind":"pith_short_16","alias_value":"YONVZQ7RSJNPBMT7","created_at":"2026-07-05T01:14:07Z"},{"alias_kind":"pith_short_8","alias_value":"YONVZQ7R","created_at":"2026-07-05T01:14:07Z"}],"graph_snapshots":[{"event_id":"sha256:3622fece0aa666b8dc364586a2828b76cf10ba934595dea1542d6b4b379e4f43","target":"graph","created_at":"2026-07-05T01:14:07Z","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/2006.15644/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Atomic-scale materials synthesis via layer deposition techniques present a unique opportunity to control material structures and yield systems that display unique functional properties that cannot be stabilized using traditional bulk synthetic routes. However, the deposition process itself presents a large, multidimensional space that is traditionally optimized via intuition and trial and error, slowing down progress. Here, we present an application of deep reinforcement learning to a simulated materials synthesis problem, utilizing the Stein variational policy gradient (SVPG) approach to trai","authors_text":"Dan Lu, Lukas Vlcek, Nikolay Borodinov, Nouamane Laanait, Rama K. Vasudevan, Siyan Liu","cross_cats":["cond-mat.mtrl-sci"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.comp-ph","submitted_at":"2020-06-28T16:27:26Z","title":"Application of variational policy gradient to atomic-scale materials synthesis"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2006.15644","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":"sha256:9723d320d79ce605ddf4a8afeb2f22bdfec51aa82875531fdd094ebc3826cb21","target":"record","created_at":"2026-07-05T01:14:07Z","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":"f39fa4fcb533e72d2aa8841b73edc2ca048793fe84e4e0171ab4d0e1c687c4a9","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.comp-ph","submitted_at":"2020-06-28T16:27:26Z","title_canon_sha256":"131edd317b96df78020e69c12ebad61c61e7704cd347c20b40da6a0a6cf46378"},"schema_version":"1.0","source":{"id":"2006.15644","kind":"arxiv","version":1}},"canonical_sha256":"c39b5cc3f1925af0b27f4eeb922191cbe8a1b9ceabfd84b701c68d73621df3e0","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c39b5cc3f1925af0b27f4eeb922191cbe8a1b9ceabfd84b701c68d73621df3e0","first_computed_at":"2026-07-05T01:14:07.655670Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:14:07.655670Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"denxmhtCDqJ80Ei0Ko/+MdQLX++DXnvONNGEVCX/c/1RRa8v+zhwOrlLD/Ag8gjneEHpCqHcTxCMhulkMiszDw==","signature_status":"signed_v1","signed_at":"2026-07-05T01:14:07.656173Z","signed_message":"canonical_sha256_bytes"},"source_id":"2006.15644","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9723d320d79ce605ddf4a8afeb2f22bdfec51aa82875531fdd094ebc3826cb21","sha256:3622fece0aa666b8dc364586a2828b76cf10ba934595dea1542d6b4b379e4f43"],"state_sha256":"ff60f4a1e590dadb40831d8f49998dfea908a82245d8e7da1e50db4949287e9a"}