{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:JE5LMHLAQFFHZSKK3R5A6BVM7Y","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":"df9db1ebe277b63d1f8da76c1a202769290f58560d693b58ac89df7469f0982b","cross_cats_sorted":["cs.SY"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"eess.SY","submitted_at":"2025-06-14T13:17:47Z","title_canon_sha256":"37bda629804754f6e302a3d54ae06fcf3c57cb3f8bd7f53a6816bd3436eb1b05"},"schema_version":"1.0","source":{"id":"2506.12497","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2506.12497","created_at":"2026-07-05T11:23:30Z"},{"alias_kind":"arxiv_version","alias_value":"2506.12497v2","created_at":"2026-07-05T11:23:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2506.12497","created_at":"2026-07-05T11:23:30Z"},{"alias_kind":"pith_short_12","alias_value":"JE5LMHLAQFFH","created_at":"2026-07-05T11:23:30Z"},{"alias_kind":"pith_short_16","alias_value":"JE5LMHLAQFFHZSKK","created_at":"2026-07-05T11:23:30Z"},{"alias_kind":"pith_short_8","alias_value":"JE5LMHLA","created_at":"2026-07-05T11:23:30Z"}],"graph_snapshots":[{"event_id":"sha256:0842e5f097637a203a6c735fb42d57f8f7d721ec9feab21ec12be084a4edd741","target":"graph","created_at":"2026-07-05T11:23:30Z","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/2506.12497/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Cooperative multi-agent reinforcement learning (MARL) demands principled mechanisms to align heterogeneous policies while preserving the capacity for specialized behavior. We introduce a novel consensus framework that defines the team strategy as the entropic-regularized $p$-Wasserstein barycenter of agents' joint state--action visitation measures. By augmenting each agent's policy objective with a soft penalty proportional to its Sinkhorn divergence from this barycenter, the proposed approach encourages coherent group behavior without enforcing rigid parameter sharing. We derive an algorithm ","authors_text":"Ali Baheri","cross_cats":["cs.SY"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"eess.SY","submitted_at":"2025-06-14T13:17:47Z","title":"Wasserstein-Barycenter Consensus for Cooperative Multi-Agent Reinforcement Learning"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2506.12497","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":"sha256:779f5fd8bd816e215327f014e3f47540cdf816293f2c9787a3c41573f12a3c54","target":"record","created_at":"2026-07-05T11:23:30Z","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":"df9db1ebe277b63d1f8da76c1a202769290f58560d693b58ac89df7469f0982b","cross_cats_sorted":["cs.SY"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"eess.SY","submitted_at":"2025-06-14T13:17:47Z","title_canon_sha256":"37bda629804754f6e302a3d54ae06fcf3c57cb3f8bd7f53a6816bd3436eb1b05"},"schema_version":"1.0","source":{"id":"2506.12497","kind":"arxiv","version":2}},"canonical_sha256":"493ab61d60814a7cc94adc7a0f06acfe3cfee3367b551ec414b4c70bcd16bc06","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"493ab61d60814a7cc94adc7a0f06acfe3cfee3367b551ec414b4c70bcd16bc06","first_computed_at":"2026-07-05T11:23:30.108350Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T11:23:30.108350Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"JIJ6DrA9NzSvZ6TAsfZIjI7o396w/5u9lBcd1jIwr5qAef6icFQhidqLTiOJHbGhRRk8k5Gjz9MmMJGL6tafDA==","signature_status":"signed_v1","signed_at":"2026-07-05T11:23:30.108902Z","signed_message":"canonical_sha256_bytes"},"source_id":"2506.12497","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:779f5fd8bd816e215327f014e3f47540cdf816293f2c9787a3c41573f12a3c54","sha256:0842e5f097637a203a6c735fb42d57f8f7d721ec9feab21ec12be084a4edd741"],"state_sha256":"2d270094514f3d216bceeb16b7bf2c91895b2a30a72192461d0ea87c72f9a329"}