{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:C3VSAIJAX2Q4GWCUTGBFF7JRZP","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":"e4d5392e34c46b8cfc1529d2a5047654fcd5a60b9845a18b49be9ef04a441256","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"cs.LG","submitted_at":"2024-04-10T08:23:05Z","title_canon_sha256":"6fff3d7c251b0aa5633f3c139f12bf4a264f38edb33094a69a52ecaf2b34f10a"},"schema_version":"1.0","source":{"id":"2404.06824","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2404.06824","created_at":"2026-07-05T08:06:30Z"},{"alias_kind":"arxiv_version","alias_value":"2404.06824v1","created_at":"2026-07-05T08:06:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2404.06824","created_at":"2026-07-05T08:06:30Z"},{"alias_kind":"pith_short_12","alias_value":"C3VSAIJAX2Q4","created_at":"2026-07-05T08:06:30Z"},{"alias_kind":"pith_short_16","alias_value":"C3VSAIJAX2Q4GWCU","created_at":"2026-07-05T08:06:30Z"},{"alias_kind":"pith_short_8","alias_value":"C3VSAIJA","created_at":"2026-07-05T08:06:30Z"}],"graph_snapshots":[{"event_id":"sha256:bf41862bbd69e738aa262dfd3f1ad96fb862aef31d2e6b198c0c61e6e16e7c73","target":"graph","created_at":"2026-07-05T08:06:30Z","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/2404.06824/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Indoor positioning systems based on Ultra-wideband (UWB) technology are gaining recognition for their ability to provide cm-level localization accuracy. However, these systems often encounter challenges caused by dense multi-path fading, leading to positioning errors. To address this issue, in this letter, we propose a novel methodology for unsupervised anchor node selection using deep embedded clustering (DEC). Our approach uses an Auto Encoder (AE) before clustering, thereby better separating UWB features into separable clusters of UWB input signals. We furthermore investigate how to rank th","authors_text":"Adnan Shahid, Arne Broering, Ben Van Herbruggen, Eli de Poorter, Phuong Bich Duong","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"cs.LG","submitted_at":"2024-04-10T08:23:05Z","title":"Error Mitigation for TDoA UWB Indoor Localization using Unsupervised Machine Learning"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2404.06824","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:f3ddeb84e4f4fee6a583f0bfc90b0ed9dc98670c72c2ddf5455f9b89b0f2f14a","target":"record","created_at":"2026-07-05T08:06:30Z","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":"e4d5392e34c46b8cfc1529d2a5047654fcd5a60b9845a18b49be9ef04a441256","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"cs.LG","submitted_at":"2024-04-10T08:23:05Z","title_canon_sha256":"6fff3d7c251b0aa5633f3c139f12bf4a264f38edb33094a69a52ecaf2b34f10a"},"schema_version":"1.0","source":{"id":"2404.06824","kind":"arxiv","version":1}},"canonical_sha256":"16eb202120bea1c35854998252fd31cbcf5e6025da909791a8be9764401b7df3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"16eb202120bea1c35854998252fd31cbcf5e6025da909791a8be9764401b7df3","first_computed_at":"2026-07-05T08:06:30.771448Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T08:06:30.771448Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"AJZZZUq55BH/w2qecGYJM48dOS38v+Rp8NXKShf+hvCv4KvQgL/beytAZSbiYbMJP53Nq5or/3cGtSXKBQzhCA==","signature_status":"signed_v1","signed_at":"2026-07-05T08:06:30.771953Z","signed_message":"canonical_sha256_bytes"},"source_id":"2404.06824","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f3ddeb84e4f4fee6a583f0bfc90b0ed9dc98670c72c2ddf5455f9b89b0f2f14a","sha256:bf41862bbd69e738aa262dfd3f1ad96fb862aef31d2e6b198c0c61e6e16e7c73"],"state_sha256":"0d97d5b396311dd6828fcc02ef2d7aee525e376ca3ef03b56960c784a06ff0ba"}