{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:PT7MLTJ433GX5KDZH33BBRPYCN","short_pith_number":"pith:PT7MLTJ4","canonical_record":{"source":{"id":"2507.18727","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/publicdomain/zero/1.0/","primary_cat":"cs.IT","submitted_at":"2025-07-24T18:19:56Z","cross_cats_sorted":["eess.SP","math.IT"],"title_canon_sha256":"d0829f324078ecc5cfdcd96b1948434aef764ddd271246a14f588a70484de62d","abstract_canon_sha256":"0b8879635c98ea0f6e3ec06368d25e96e9e6cebef3b3de91d4e11a6cbb2c592f"},"schema_version":"1.0"},"canonical_sha256":"7cfec5cd3cdecd7ea8793ef610c5f81367a0c2d36ce680dc501de493a5b7b0ec","source":{"kind":"arxiv","id":"2507.18727","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2507.18727","created_at":"2026-07-05T11:43:15Z"},{"alias_kind":"arxiv_version","alias_value":"2507.18727v1","created_at":"2026-07-05T11:43:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2507.18727","created_at":"2026-07-05T11:43:15Z"},{"alias_kind":"pith_short_12","alias_value":"PT7MLTJ433GX","created_at":"2026-07-05T11:43:15Z"},{"alias_kind":"pith_short_16","alias_value":"PT7MLTJ433GX5KDZ","created_at":"2026-07-05T11:43:15Z"},{"alias_kind":"pith_short_8","alias_value":"PT7MLTJ4","created_at":"2026-07-05T11:43:15Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:PT7MLTJ433GX5KDZH33BBRPYCN","target":"record","payload":{"canonical_record":{"source":{"id":"2507.18727","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/publicdomain/zero/1.0/","primary_cat":"cs.IT","submitted_at":"2025-07-24T18:19:56Z","cross_cats_sorted":["eess.SP","math.IT"],"title_canon_sha256":"d0829f324078ecc5cfdcd96b1948434aef764ddd271246a14f588a70484de62d","abstract_canon_sha256":"0b8879635c98ea0f6e3ec06368d25e96e9e6cebef3b3de91d4e11a6cbb2c592f"},"schema_version":"1.0"},"canonical_sha256":"7cfec5cd3cdecd7ea8793ef610c5f81367a0c2d36ce680dc501de493a5b7b0ec","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T11:43:15.200761Z","signature_b64":"R6QjAb0vuhhY6gqmbu0zrN/wxCes1W2gtrcYlhBot38Qm7AU5raRnclb1nvfFaAhOiGjkejdCjNa3yntAHW4Bw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7cfec5cd3cdecd7ea8793ef610c5f81367a0c2d36ce680dc501de493a5b7b0ec","last_reissued_at":"2026-07-05T11:43:15.200283Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T11:43:15.200283Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2507.18727","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T11:43:15Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"qU415FkBDyApJ26t/SS61eP230+vLajyx80PK2HrJmZf6yhhUb3Fb/rFym8FRZ6KDWjNSvZemAu0L7chs9GbCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-15T09:41:32.391449Z"},"content_sha256":"c2199d1b95aa60549d31d92b15c7c596ebe9b63e5e3fa0e7d29c94413d2585fd","schema_version":"1.0","event_id":"sha256:c2199d1b95aa60549d31d92b15c7c596ebe9b63e5e3fa0e7d29c94413d2585fd"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:PT7MLTJ433GX5KDZH33BBRPYCN","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"RIS Codebook Index Assignment under Imperfect Control Links Using TSP-Inspired Optimization","license":"http://creativecommons.org/publicdomain/zero/1.0/","headline":"","cross_cats":["eess.SP","math.IT"],"primary_cat":"cs.IT","authors_text":"Kunlun Wang, Liangshun Wu, Qingqing Wu, Wen Chen, Xudong Bai","submitted_at":"2025-07-24T18:19:56Z","abstract_excerpt":"Reconfigurable Intelligent Surfaces (RIS) promise transformative gains in wireless communications by enabling programmable control of the propagation environment through discrete phase configurations. In practical deployments, the control of RIS phase states is typically managed using finite codebooks, with configuration indices transmitted over low latency, yet imperfect, wireless feedback channels. Even rare feedback bit errors can lead to significant mismatches between intended and applied RIS states, degrading system performance. This paper addresses the challenge of robust RIS codebook in"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2507.18727","kind":"arxiv","version":1},"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/2507.18727/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":"2026-07-05T11:43:15Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6AUSYBGQFHlhpFF/h1fTnTr2Sa4zegu5oWwHe0+eIvJMotxriItBKPHM4n5/0pmw/xIvymWg1LXB0/r99xqyCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-15T09:41:32.391974Z"},"content_sha256":"56a26c8a7b67188bbec69fc2a840c96b47d295ad521d047315c485c145c57e64","schema_version":"1.0","event_id":"sha256:56a26c8a7b67188bbec69fc2a840c96b47d295ad521d047315c485c145c57e64"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/PT7MLTJ433GX5KDZH33BBRPYCN/bundle.json","state_url":"https://pith.science/pith/PT7MLTJ433GX5KDZH33BBRPYCN/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/PT7MLTJ433GX5KDZH33BBRPYCN/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":"2026-08-15T09:41:32Z","links":{"resolver":"https://pith.science/pith/PT7MLTJ433GX5KDZH33BBRPYCN","bundle":"https://pith.science/pith/PT7MLTJ433GX5KDZH33BBRPYCN/bundle.json","state":"https://pith.science/pith/PT7MLTJ433GX5KDZH33BBRPYCN/state.json","well_known_bundle":"https://pith.science/.well-known/pith/PT7MLTJ433GX5KDZH33BBRPYCN/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:PT7MLTJ433GX5KDZH33BBRPYCN","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":"0b8879635c98ea0f6e3ec06368d25e96e9e6cebef3b3de91d4e11a6cbb2c592f","cross_cats_sorted":["eess.SP","math.IT"],"license":"http://creativecommons.org/publicdomain/zero/1.0/","primary_cat":"cs.IT","submitted_at":"2025-07-24T18:19:56Z","title_canon_sha256":"d0829f324078ecc5cfdcd96b1948434aef764ddd271246a14f588a70484de62d"},"schema_version":"1.0","source":{"id":"2507.18727","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2507.18727","created_at":"2026-07-05T11:43:15Z"},{"alias_kind":"arxiv_version","alias_value":"2507.18727v1","created_at":"2026-07-05T11:43:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2507.18727","created_at":"2026-07-05T11:43:15Z"},{"alias_kind":"pith_short_12","alias_value":"PT7MLTJ433GX","created_at":"2026-07-05T11:43:15Z"},{"alias_kind":"pith_short_16","alias_value":"PT7MLTJ433GX5KDZ","created_at":"2026-07-05T11:43:15Z"},{"alias_kind":"pith_short_8","alias_value":"PT7MLTJ4","created_at":"2026-07-05T11:43:15Z"}],"graph_snapshots":[{"event_id":"sha256:56a26c8a7b67188bbec69fc2a840c96b47d295ad521d047315c485c145c57e64","target":"graph","created_at":"2026-07-05T11:43:15Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2507.18727/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Reconfigurable Intelligent Surfaces (RIS) promise transformative gains in wireless communications by enabling programmable control of the propagation environment through discrete phase configurations. In practical deployments, the control of RIS phase states is typically managed using finite codebooks, with configuration indices transmitted over low latency, yet imperfect, wireless feedback channels. Even rare feedback bit errors can lead to significant mismatches between intended and applied RIS states, degrading system performance. This paper addresses the challenge of robust RIS codebook in","authors_text":"Kunlun Wang, Liangshun Wu, Qingqing Wu, Wen Chen, Xudong Bai","cross_cats":["eess.SP","math.IT"],"headline":"","license":"http://creativecommons.org/publicdomain/zero/1.0/","primary_cat":"cs.IT","submitted_at":"2025-07-24T18:19:56Z","title":"RIS Codebook Index Assignment under Imperfect Control Links Using TSP-Inspired Optimization"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2507.18727","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:c2199d1b95aa60549d31d92b15c7c596ebe9b63e5e3fa0e7d29c94413d2585fd","target":"record","created_at":"2026-07-05T11:43:15Z","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":"0b8879635c98ea0f6e3ec06368d25e96e9e6cebef3b3de91d4e11a6cbb2c592f","cross_cats_sorted":["eess.SP","math.IT"],"license":"http://creativecommons.org/publicdomain/zero/1.0/","primary_cat":"cs.IT","submitted_at":"2025-07-24T18:19:56Z","title_canon_sha256":"d0829f324078ecc5cfdcd96b1948434aef764ddd271246a14f588a70484de62d"},"schema_version":"1.0","source":{"id":"2507.18727","kind":"arxiv","version":1}},"canonical_sha256":"7cfec5cd3cdecd7ea8793ef610c5f81367a0c2d36ce680dc501de493a5b7b0ec","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7cfec5cd3cdecd7ea8793ef610c5f81367a0c2d36ce680dc501de493a5b7b0ec","first_computed_at":"2026-07-05T11:43:15.200283Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T11:43:15.200283Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"R6QjAb0vuhhY6gqmbu0zrN/wxCes1W2gtrcYlhBot38Qm7AU5raRnclb1nvfFaAhOiGjkejdCjNa3yntAHW4Bw==","signature_status":"signed_v1","signed_at":"2026-07-05T11:43:15.200761Z","signed_message":"canonical_sha256_bytes"},"source_id":"2507.18727","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c2199d1b95aa60549d31d92b15c7c596ebe9b63e5e3fa0e7d29c94413d2585fd","sha256:56a26c8a7b67188bbec69fc2a840c96b47d295ad521d047315c485c145c57e64"],"state_sha256":"cfd121286f264e5d61493b6dfb3bb514520092dd408dba35b83a0e62f62ee566"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"M8fQoZFflLnoSbx7dyn+0ALLZ9n0r1SkcO1xmKvoYAmZNNAjNfgbdWeZ3khDNFRWmKaColQYxLut3B3fvautDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-15T09:41:32.395605Z","bundle_sha256":"26669350aeb0762bc0dd42be0e20dfc4da932994863bf04c6ee8535e77939a34"}}