{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:ILS4NDV26IBICDELNP42SFQBAN","short_pith_number":"pith:ILS4NDV2","canonical_record":{"source":{"id":"1503.01812","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DB","submitted_at":"2015-03-05T22:58:19Z","cross_cats_sorted":[],"title_canon_sha256":"5fa19a1086abfbee45aea864aa8931e12883f9083ac36f58a51dc4a2e9cca3b9","abstract_canon_sha256":"135c6ae1e80120b1c0cdbfd0ebe70cad4bf3ff81168652dd850fbcb30b02d4f0"},"schema_version":"1.0"},"canonical_sha256":"42e5c68ebaf202810c8b6bf9a91601034605cee20014dcaab238b038a735d370","source":{"kind":"arxiv","id":"1503.01812","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1503.01812","created_at":"2026-05-18T02:25:27Z"},{"alias_kind":"arxiv_version","alias_value":"1503.01812v1","created_at":"2026-05-18T02:25:27Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1503.01812","created_at":"2026-05-18T02:25:27Z"},{"alias_kind":"pith_short_12","alias_value":"ILS4NDV26IBI","created_at":"2026-05-18T12:29:25Z"},{"alias_kind":"pith_short_16","alias_value":"ILS4NDV26IBICDEL","created_at":"2026-05-18T12:29:25Z"},{"alias_kind":"pith_short_8","alias_value":"ILS4NDV2","created_at":"2026-05-18T12:29:25Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:ILS4NDV26IBICDELNP42SFQBAN","target":"record","payload":{"canonical_record":{"source":{"id":"1503.01812","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DB","submitted_at":"2015-03-05T22:58:19Z","cross_cats_sorted":[],"title_canon_sha256":"5fa19a1086abfbee45aea864aa8931e12883f9083ac36f58a51dc4a2e9cca3b9","abstract_canon_sha256":"135c6ae1e80120b1c0cdbfd0ebe70cad4bf3ff81168652dd850fbcb30b02d4f0"},"schema_version":"1.0"},"canonical_sha256":"42e5c68ebaf202810c8b6bf9a91601034605cee20014dcaab238b038a735d370","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:25:27.492990Z","signature_b64":"KmCpyvhFNVTlvHAdQYbDSJYrQHkM12i0LiUkTbcoryRRuEvr4XI9bJfflG18ZMC93zIZB4Hp/QSY5ku1K09mBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"42e5c68ebaf202810c8b6bf9a91601034605cee20014dcaab238b038a735d370","last_reissued_at":"2026-05-18T02:25:27.492608Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:25:27.492608Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1503.01812","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":"2026-05-18T02:25:27Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"M5w6g8KCqeHkCLcR2jhA+YOLKY1S9hKmQbQVmSk/v9hqFb8GvU7S+9fxc7KXNDG8neVASixeF0Byaqo79mmkBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-09T06:11:21.259646Z"},"content_sha256":"c0e937952aabc60c889b7299e7b1adaea7faa4ecbf8bd73e442262285c129b99","schema_version":"1.0","event_id":"sha256:c0e937952aabc60c889b7299e7b1adaea7faa4ecbf8bd73e442262285c129b99"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:ILS4NDV26IBICDELNP42SFQBAN","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Ontology-Based Quality Evaluation of Value Generalization Hierarchies for Data Anonymization","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.DB","authors_text":"Liam Murphy, Patrick McDonagh, Thomas Cerqueus, Vanessa Ayala-Rivera","submitted_at":"2015-03-05T22:58:19Z","abstract_excerpt":"In privacy-preserving data publishing, approaches using Value Generalization Hierarchies (VGHs) form an important class of anonymization algorithms. VGHs play a key role in the utility of published datasets as they dictate how the anonymization of the data occurs. For categorical attributes, it is imperative to preserve the semantics of the original data in order to achieve a higher utility. Despite this, semantics have not being formally considered in the specification of VGHs. Moreover, there are no methods that allow the users to assess the quality of their VGH. In this paper, we propose a "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1503.01812","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":"2026-05-18T02:25:27Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"nBTGksEUnbAum+LDdyzKo8kNHattqUvNFeDmxJSjlpBAN3QEWzUprOTFc15p8hbezjdLsQSlFPn2cr89GxDqBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-09T06:11:21.260288Z"},"content_sha256":"4df994dfb42aa3fc04985eb1085d6cd8a6224c25e389eb347c12124eb8f2b8a6","schema_version":"1.0","event_id":"sha256:4df994dfb42aa3fc04985eb1085d6cd8a6224c25e389eb347c12124eb8f2b8a6"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ILS4NDV26IBICDELNP42SFQBAN/bundle.json","state_url":"https://pith.science/pith/ILS4NDV26IBICDELNP42SFQBAN/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ILS4NDV26IBICDELNP42SFQBAN/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":"2026-06-09T06:11:21Z","links":{"resolver":"https://pith.science/pith/ILS4NDV26IBICDELNP42SFQBAN","bundle":"https://pith.science/pith/ILS4NDV26IBICDELNP42SFQBAN/bundle.json","state":"https://pith.science/pith/ILS4NDV26IBICDELNP42SFQBAN/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ILS4NDV26IBICDELNP42SFQBAN/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:ILS4NDV26IBICDELNP42SFQBAN","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":"135c6ae1e80120b1c0cdbfd0ebe70cad4bf3ff81168652dd850fbcb30b02d4f0","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DB","submitted_at":"2015-03-05T22:58:19Z","title_canon_sha256":"5fa19a1086abfbee45aea864aa8931e12883f9083ac36f58a51dc4a2e9cca3b9"},"schema_version":"1.0","source":{"id":"1503.01812","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1503.01812","created_at":"2026-05-18T02:25:27Z"},{"alias_kind":"arxiv_version","alias_value":"1503.01812v1","created_at":"2026-05-18T02:25:27Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1503.01812","created_at":"2026-05-18T02:25:27Z"},{"alias_kind":"pith_short_12","alias_value":"ILS4NDV26IBI","created_at":"2026-05-18T12:29:25Z"},{"alias_kind":"pith_short_16","alias_value":"ILS4NDV26IBICDEL","created_at":"2026-05-18T12:29:25Z"},{"alias_kind":"pith_short_8","alias_value":"ILS4NDV2","created_at":"2026-05-18T12:29:25Z"}],"graph_snapshots":[{"event_id":"sha256:4df994dfb42aa3fc04985eb1085d6cd8a6224c25e389eb347c12124eb8f2b8a6","target":"graph","created_at":"2026-05-18T02:25:27Z","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 privacy-preserving data publishing, approaches using Value Generalization Hierarchies (VGHs) form an important class of anonymization algorithms. VGHs play a key role in the utility of published datasets as they dictate how the anonymization of the data occurs. For categorical attributes, it is imperative to preserve the semantics of the original data in order to achieve a higher utility. Despite this, semantics have not being formally considered in the specification of VGHs. Moreover, there are no methods that allow the users to assess the quality of their VGH. In this paper, we propose a ","authors_text":"Liam Murphy, Patrick McDonagh, Thomas Cerqueus, Vanessa Ayala-Rivera","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DB","submitted_at":"2015-03-05T22:58:19Z","title":"Ontology-Based Quality Evaluation of Value Generalization Hierarchies for Data Anonymization"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1503.01812","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:c0e937952aabc60c889b7299e7b1adaea7faa4ecbf8bd73e442262285c129b99","target":"record","created_at":"2026-05-18T02:25:27Z","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":"135c6ae1e80120b1c0cdbfd0ebe70cad4bf3ff81168652dd850fbcb30b02d4f0","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DB","submitted_at":"2015-03-05T22:58:19Z","title_canon_sha256":"5fa19a1086abfbee45aea864aa8931e12883f9083ac36f58a51dc4a2e9cca3b9"},"schema_version":"1.0","source":{"id":"1503.01812","kind":"arxiv","version":1}},"canonical_sha256":"42e5c68ebaf202810c8b6bf9a91601034605cee20014dcaab238b038a735d370","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"42e5c68ebaf202810c8b6bf9a91601034605cee20014dcaab238b038a735d370","first_computed_at":"2026-05-18T02:25:27.492608Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:25:27.492608Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"KmCpyvhFNVTlvHAdQYbDSJYrQHkM12i0LiUkTbcoryRRuEvr4XI9bJfflG18ZMC93zIZB4Hp/QSY5ku1K09mBA==","signature_status":"signed_v1","signed_at":"2026-05-18T02:25:27.492990Z","signed_message":"canonical_sha256_bytes"},"source_id":"1503.01812","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c0e937952aabc60c889b7299e7b1adaea7faa4ecbf8bd73e442262285c129b99","sha256:4df994dfb42aa3fc04985eb1085d6cd8a6224c25e389eb347c12124eb8f2b8a6"],"state_sha256":"acb2760fdf1aa1c9d55e054605989802d89f0ac30da2c1347f904bcd98bcceb5"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"tngiJc6UJVNE3B1MmQbQuzOZ3OfoylLofwCTqLcsWbHOtd9ZPUHZJKNYDgsfJrt6sdpSJCoxiwQ+ViaGevXbAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-09T06:11:21.264009Z","bundle_sha256":"8e3e4f9925974458af4086f45bf012f033680e28698704cab7ed2c51a7a64d65"}}