{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:I7D57VK6HJEXAUO3PCHUIDSW4B","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":"7a442c72bcec90567830eb536ea2e9da8bbbb32f48ef729c380fb7119b6a67f9","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2018-02-28T09:42:11Z","title_canon_sha256":"e2612a9fbdf7a0e0cb7f39c2fdf3cf080f523b54821174dda553bf28d16a1589"},"schema_version":"1.0","source":{"id":"1802.10325","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1802.10325","created_at":"2026-05-18T00:20:01Z"},{"alias_kind":"arxiv_version","alias_value":"1802.10325v2","created_at":"2026-05-18T00:20:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1802.10325","created_at":"2026-05-18T00:20:01Z"},{"alias_kind":"pith_short_12","alias_value":"I7D57VK6HJEX","created_at":"2026-05-18T12:32:28Z"},{"alias_kind":"pith_short_16","alias_value":"I7D57VK6HJEXAUO3","created_at":"2026-05-18T12:32:28Z"},{"alias_kind":"pith_short_8","alias_value":"I7D57VK6","created_at":"2026-05-18T12:32:28Z"}],"graph_snapshots":[{"event_id":"sha256:353a1168d773b67f84041b6da6259b813da7f860c69951373b3fb06ba14bb856","target":"graph","created_at":"2026-05-18T00:20:01Z","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":"Maximum eigenvalue detection (MED) is an important application of random matrix theory in spectrum sensing and signal detection. However, in small signal-to-noise ratio environment, the maximum eigenvalue of the representative signal is at the edge of Marchenko-Pastur (M-P) law bulk and meets the Tracy-Widom distribution. Since the distribution of Tracy-Widom has no closed-form expression, it brings great difficulty in processing. In this paper, we propose a shifting maximum eigenvalue (SMED) algorithm, which shifts the maximum eigenvalue out of the M-P law bulk by combining an auxiliary signa","authors_text":"Lin Zheng, Qing Feng, Robert C. Qiu, Xuebin Li","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2018-02-28T09:42:11Z","title":"Shifting Maximum Eigenvalue Detection in Low SNR Environment"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1802.10325","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:b3d6050460736be929a3b6b855724c8f0fca8419e374bea6acdd2b113a433a29","target":"record","created_at":"2026-05-18T00:20:01Z","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":"7a442c72bcec90567830eb536ea2e9da8bbbb32f48ef729c380fb7119b6a67f9","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2018-02-28T09:42:11Z","title_canon_sha256":"e2612a9fbdf7a0e0cb7f39c2fdf3cf080f523b54821174dda553bf28d16a1589"},"schema_version":"1.0","source":{"id":"1802.10325","kind":"arxiv","version":2}},"canonical_sha256":"47c7dfd55e3a497051db788f440e56e048ebfba7ea6b3a2626261a7e82800995","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"47c7dfd55e3a497051db788f440e56e048ebfba7ea6b3a2626261a7e82800995","first_computed_at":"2026-05-18T00:20:01.914002Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:20:01.914002Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Ohd58X2K/7XmFdndgXnrzbboJE/LecsoYRLA9PFR2TV9ieovZ9kP9A9ofstxe+m5hvUhEyrZnCIBEXzm6JdgDA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:20:01.914818Z","signed_message":"canonical_sha256_bytes"},"source_id":"1802.10325","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b3d6050460736be929a3b6b855724c8f0fca8419e374bea6acdd2b113a433a29","sha256:353a1168d773b67f84041b6da6259b813da7f860c69951373b3fb06ba14bb856"],"state_sha256":"45f35c6b019611fce38c7047c78278ef68b41f21c238cac544c9b98d48e13967"}