{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:CKA2J5NU3H3MMBVLVTU4ZL72HF","short_pith_number":"pith:CKA2J5NU","canonical_record":{"source":{"id":"1803.04066","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2018-03-12T00:10:37Z","cross_cats_sorted":[],"title_canon_sha256":"07de91a7d19d56c19fbc70aaa1a5b70471066db986bcc95df3e59fc061405110","abstract_canon_sha256":"d1b887135bf076c4f456244e0e9a7663e2a289729947dc1e88e56bda0a6fb158"},"schema_version":"1.0"},"canonical_sha256":"1281a4f5b4d9f6c606abace9ccaffa396f8bf9ac43aecfc71eb7b7da618fbe72","source":{"kind":"arxiv","id":"1803.04066","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1803.04066","created_at":"2026-05-18T00:21:32Z"},{"alias_kind":"arxiv_version","alias_value":"1803.04066v1","created_at":"2026-05-18T00:21:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1803.04066","created_at":"2026-05-18T00:21:32Z"},{"alias_kind":"pith_short_12","alias_value":"CKA2J5NU3H3M","created_at":"2026-05-18T12:32:16Z"},{"alias_kind":"pith_short_16","alias_value":"CKA2J5NU3H3MMBVL","created_at":"2026-05-18T12:32:16Z"},{"alias_kind":"pith_short_8","alias_value":"CKA2J5NU","created_at":"2026-05-18T12:32:16Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:CKA2J5NU3H3MMBVLVTU4ZL72HF","target":"record","payload":{"canonical_record":{"source":{"id":"1803.04066","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2018-03-12T00:10:37Z","cross_cats_sorted":[],"title_canon_sha256":"07de91a7d19d56c19fbc70aaa1a5b70471066db986bcc95df3e59fc061405110","abstract_canon_sha256":"d1b887135bf076c4f456244e0e9a7663e2a289729947dc1e88e56bda0a6fb158"},"schema_version":"1.0"},"canonical_sha256":"1281a4f5b4d9f6c606abace9ccaffa396f8bf9ac43aecfc71eb7b7da618fbe72","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:21:32.733927Z","signature_b64":"FZG8cCE3POMxqQi8S8zRpB0POKujUhjZwtSvppgJEndw/HoQo67BujOkrF7TIjlGmimroRuIfCXdUP4BZ4LvCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"1281a4f5b4d9f6c606abace9ccaffa396f8bf9ac43aecfc71eb7b7da618fbe72","last_reissued_at":"2026-05-18T00:21:32.733375Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:21:32.733375Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1803.04066","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":"2026-05-18T00:21:32Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"AI/DFz/r8wBsmABpUZbFo0MTpUViy9REQGyZGKjB4qDy4VG79omsiyak3WeYDiMEcd6ELus2S7GcwT0gkqYRCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-09T06:37:20.971562Z"},"content_sha256":"604274b216a349c35a3ba42975e52af6f11c2d0490e5bfcdad7826c9e53090f0","schema_version":"1.0","event_id":"sha256:604274b216a349c35a3ba42975e52af6f11c2d0490e5bfcdad7826c9e53090f0"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:CKA2J5NU3H3MMBVLVTU4ZL72HF","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Multisensor Data Fusion for Water Quality Monitoring using Wireless Sensor Networks","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"eess.SP","authors_text":"Ebrahim Karami, Francis M. Bui, Ha H. Nguyen","submitted_at":"2018-03-12T00:10:37Z","abstract_excerpt":"In this paper, the application of hierarchical wireless sensor networks in water quality monitoring is investigated. Adopting a hierarchical structure, the set of sensors is divided into multiple clusters where the value of the sensing parameter is almost constant in each cluster. The members of each cluster transmit their sensing information to the local fusion center (LFC) of their corresponding cluster, where using some fusion rule, the received information is combined, and then possibly sent to a higher-level central fusion center (CFC). A two-phase processing scheme is also envisioned, in"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1803.04066","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":""},"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":"2026-05-18T00:21:32Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"7V39ZehdolqvDt/QDVO1kkZH6yHtnCa9ho0dNNpnoVPI72U1DNc8uIsL538PVRf2WIDdHZ7yIMoiTVKWqhk3Bg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-09T06:37:20.972265Z"},"content_sha256":"71f0cca98c72aa8e1b4d7fe826b20d55ea9508035613984b2f64017a71f300c1","schema_version":"1.0","event_id":"sha256:71f0cca98c72aa8e1b4d7fe826b20d55ea9508035613984b2f64017a71f300c1"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/CKA2J5NU3H3MMBVLVTU4ZL72HF/bundle.json","state_url":"https://pith.science/pith/CKA2J5NU3H3MMBVLVTU4ZL72HF/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/CKA2J5NU3H3MMBVLVTU4ZL72HF/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":"2026-06-09T06:37:20Z","links":{"resolver":"https://pith.science/pith/CKA2J5NU3H3MMBVLVTU4ZL72HF","bundle":"https://pith.science/pith/CKA2J5NU3H3MMBVLVTU4ZL72HF/bundle.json","state":"https://pith.science/pith/CKA2J5NU3H3MMBVLVTU4ZL72HF/state.json","well_known_bundle":"https://pith.science/.well-known/pith/CKA2J5NU3H3MMBVLVTU4ZL72HF/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:CKA2J5NU3H3MMBVLVTU4ZL72HF","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":"d1b887135bf076c4f456244e0e9a7663e2a289729947dc1e88e56bda0a6fb158","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2018-03-12T00:10:37Z","title_canon_sha256":"07de91a7d19d56c19fbc70aaa1a5b70471066db986bcc95df3e59fc061405110"},"schema_version":"1.0","source":{"id":"1803.04066","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1803.04066","created_at":"2026-05-18T00:21:32Z"},{"alias_kind":"arxiv_version","alias_value":"1803.04066v1","created_at":"2026-05-18T00:21:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1803.04066","created_at":"2026-05-18T00:21:32Z"},{"alias_kind":"pith_short_12","alias_value":"CKA2J5NU3H3M","created_at":"2026-05-18T12:32:16Z"},{"alias_kind":"pith_short_16","alias_value":"CKA2J5NU3H3MMBVL","created_at":"2026-05-18T12:32:16Z"},{"alias_kind":"pith_short_8","alias_value":"CKA2J5NU","created_at":"2026-05-18T12:32:16Z"}],"graph_snapshots":[{"event_id":"sha256:71f0cca98c72aa8e1b4d7fe826b20d55ea9508035613984b2f64017a71f300c1","target":"graph","created_at":"2026-05-18T00:21:32Z","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":"In this paper, the application of hierarchical wireless sensor networks in water quality monitoring is investigated. Adopting a hierarchical structure, the set of sensors is divided into multiple clusters where the value of the sensing parameter is almost constant in each cluster. The members of each cluster transmit their sensing information to the local fusion center (LFC) of their corresponding cluster, where using some fusion rule, the received information is combined, and then possibly sent to a higher-level central fusion center (CFC). A two-phase processing scheme is also envisioned, in","authors_text":"Ebrahim Karami, Francis M. Bui, Ha H. Nguyen","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2018-03-12T00:10:37Z","title":"Multisensor Data Fusion for Water Quality Monitoring using Wireless Sensor Networks"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1803.04066","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":"sha256:604274b216a349c35a3ba42975e52af6f11c2d0490e5bfcdad7826c9e53090f0","target":"record","created_at":"2026-05-18T00:21:32Z","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":"d1b887135bf076c4f456244e0e9a7663e2a289729947dc1e88e56bda0a6fb158","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2018-03-12T00:10:37Z","title_canon_sha256":"07de91a7d19d56c19fbc70aaa1a5b70471066db986bcc95df3e59fc061405110"},"schema_version":"1.0","source":{"id":"1803.04066","kind":"arxiv","version":1}},"canonical_sha256":"1281a4f5b4d9f6c606abace9ccaffa396f8bf9ac43aecfc71eb7b7da618fbe72","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1281a4f5b4d9f6c606abace9ccaffa396f8bf9ac43aecfc71eb7b7da618fbe72","first_computed_at":"2026-05-18T00:21:32.733375Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:21:32.733375Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"FZG8cCE3POMxqQi8S8zRpB0POKujUhjZwtSvppgJEndw/HoQo67BujOkrF7TIjlGmimroRuIfCXdUP4BZ4LvCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:21:32.733927Z","signed_message":"canonical_sha256_bytes"},"source_id":"1803.04066","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:604274b216a349c35a3ba42975e52af6f11c2d0490e5bfcdad7826c9e53090f0","sha256:71f0cca98c72aa8e1b4d7fe826b20d55ea9508035613984b2f64017a71f300c1"],"state_sha256":"29e867ea38e973e1c206c6d843b2fa7cc9d0dc996a9828e726c4eff24b1ce4df"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"l+U6skVMuczzMMNLxdGgbsB5G8fcgwqDzFRWWA/w0vvsiqkKma3DEtrxiJA8eG4SXmfgCwxsZ10XcGZ1QoE+Dw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-09T06:37:20.976743Z","bundle_sha256":"db187578afb6159aae834407180c0d7f57193a371564a407349eeb045d89a867"}}