{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:GYFO7CXCCSXA44UX6CMEUU5DK7","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":"be542c641b7110c53e84949b9094bdc996c1d4132894b6d9952c972f4231bc94","cross_cats_sorted":["cs.DC"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.OC","submitted_at":"2012-11-30T14:54:43Z","title_canon_sha256":"c0b091d6ef296696e55c66913d051b9b0147f446f21f8451506c93c706bb94fa"},"schema_version":"1.0","source":{"id":"1211.7277","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1211.7277","created_at":"2026-05-18T03:39:31Z"},{"alias_kind":"arxiv_version","alias_value":"1211.7277v1","created_at":"2026-05-18T03:39:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1211.7277","created_at":"2026-05-18T03:39:31Z"},{"alias_kind":"pith_short_12","alias_value":"GYFO7CXCCSXA","created_at":"2026-05-18T12:27:06Z"},{"alias_kind":"pith_short_16","alias_value":"GYFO7CXCCSXA44UX","created_at":"2026-05-18T12:27:06Z"},{"alias_kind":"pith_short_8","alias_value":"GYFO7CXC","created_at":"2026-05-18T12:27:06Z"}],"graph_snapshots":[{"event_id":"sha256:298f978eb9272dd5841bcb83d118d5965a1392462bb269c41cc879f303d83e47","target":"graph","created_at":"2026-05-18T03:39:31Z","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":"We present DCOOL-NET, a scalable distributed in-network algorithm for sensor network localization based on noisy range measurements. DCOOL-NET operates by parallel, collaborative message passing between single-hop neighbor sensors, and involves simple computations at each node. It stems from an application of the majorization-minimization (MM) framework to the nonconvex optimization problem at hand, and capitalizes on a novel convex majorizer. The proposed majorizer is endowed with several desirable properties and represents a key contribution of this work. It is a more accurate match to the u","authors_text":"Claudia Soares, Joao Gomes, Joao Xavier","cross_cats":["cs.DC"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.OC","submitted_at":"2012-11-30T14:54:43Z","title":"DCOOL-NET: Distributed cooperative localization for sensor networks"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1211.7277","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:d2f13eb3900d7db214ce050b34f9cb3822b492a028b754b201dbdfe12aa7ecf7","target":"record","created_at":"2026-05-18T03:39:31Z","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":"be542c641b7110c53e84949b9094bdc996c1d4132894b6d9952c972f4231bc94","cross_cats_sorted":["cs.DC"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.OC","submitted_at":"2012-11-30T14:54:43Z","title_canon_sha256":"c0b091d6ef296696e55c66913d051b9b0147f446f21f8451506c93c706bb94fa"},"schema_version":"1.0","source":{"id":"1211.7277","kind":"arxiv","version":1}},"canonical_sha256":"360aef8ae214ae0e7297f0984a53a357e806e1c40056e51a851630139aeb2b8b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"360aef8ae214ae0e7297f0984a53a357e806e1c40056e51a851630139aeb2b8b","first_computed_at":"2026-05-18T03:39:31.059054Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:39:31.059054Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"b1srhCsk+GbIV3WupmHfnTH8k/pbO3GW9fW6sgD2MeSltv9nPFAlWWuIbnxfAKjSgfGYO6a9vvxh359WifMxAg==","signature_status":"signed_v1","signed_at":"2026-05-18T03:39:31.060053Z","signed_message":"canonical_sha256_bytes"},"source_id":"1211.7277","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d2f13eb3900d7db214ce050b34f9cb3822b492a028b754b201dbdfe12aa7ecf7","sha256:298f978eb9272dd5841bcb83d118d5965a1392462bb269c41cc879f303d83e47"],"state_sha256":"4e7b5a28b78557351f253f83ab382155f091ce3c993a20b17c52e5053c36d838"}