{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:MXAUBBNHEEMGK36RGNPGA3BD6A","short_pith_number":"pith:MXAUBBNH","canonical_record":{"source":{"id":"1610.05518","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2016-10-18T10:03:25Z","cross_cats_sorted":["cs.CE"],"title_canon_sha256":"ce76c66eff5ed424bc37fbb5688aeb6b317d53d54f1ecd882639945f72ecd805","abstract_canon_sha256":"7f885216b5f5ee7d22d962c2788bad89fc7ce4d189beec5abada0c970c448150"},"schema_version":"1.0"},"canonical_sha256":"65c14085a72118656fd1335e606c23f0191a7833109be2b5123dd9fd8affbaf8","source":{"kind":"arxiv","id":"1610.05518","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1610.05518","created_at":"2026-05-18T01:01:59Z"},{"alias_kind":"arxiv_version","alias_value":"1610.05518v1","created_at":"2026-05-18T01:01:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1610.05518","created_at":"2026-05-18T01:01:59Z"},{"alias_kind":"pith_short_12","alias_value":"MXAUBBNHEEMG","created_at":"2026-05-18T12:30:32Z"},{"alias_kind":"pith_short_16","alias_value":"MXAUBBNHEEMGK36R","created_at":"2026-05-18T12:30:32Z"},{"alias_kind":"pith_short_8","alias_value":"MXAUBBNH","created_at":"2026-05-18T12:30:32Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:MXAUBBNHEEMGK36RGNPGA3BD6A","target":"record","payload":{"canonical_record":{"source":{"id":"1610.05518","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2016-10-18T10:03:25Z","cross_cats_sorted":["cs.CE"],"title_canon_sha256":"ce76c66eff5ed424bc37fbb5688aeb6b317d53d54f1ecd882639945f72ecd805","abstract_canon_sha256":"7f885216b5f5ee7d22d962c2788bad89fc7ce4d189beec5abada0c970c448150"},"schema_version":"1.0"},"canonical_sha256":"65c14085a72118656fd1335e606c23f0191a7833109be2b5123dd9fd8affbaf8","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:01:59.118284Z","signature_b64":"u1kanDSLFF+7zu7pTKYnKQfQCIGlq88aYvLP7S4i4d4/GhkQpGjJXTLHVCaQsv/AXbBCKOZYQe7oY8fF5FF8Cg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"65c14085a72118656fd1335e606c23f0191a7833109be2b5123dd9fd8affbaf8","last_reissued_at":"2026-05-18T01:01:59.117760Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:01:59.117760Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1610.05518","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":"2026-05-18T01:01:59Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"mR1ROnU8dUFnVYPWWqXH84xbb3orOvislUZGczNttruKaGseq4/+s2MYqD/amaAsnXbDYLY5LFaNfHvEHYK7AA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-06T18:41:21.543751Z"},"content_sha256":"98fda76197df688ec487b3473040f76be7f131122315d7344c5feec34ce45eb9","schema_version":"1.0","event_id":"sha256:98fda76197df688ec487b3473040f76be7f131122315d7344c5feec34ce45eb9"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:MXAUBBNHEEMGK36RGNPGA3BD6A","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Shape-based defect classification for Non Destructive Testing","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.CE"],"primary_cat":"cs.CV","authors_text":"Gianni D'Angelo, Salvatore Rampone","submitted_at":"2016-10-18T10:03:25Z","abstract_excerpt":"The aim of this work is to classify the aerospace structure defects detected by eddy current non-destructive testing. The proposed method is based on the assumption that the defect is bound to the reaction of the probe coil impedance during the test. Impedance plane analysis is used to extract a feature vector from the shape of the coil impedance in the complex plane, through the use of some geometric parameters. Shape recognition is tested with three different machine-learning based classifiers: decision trees, neural networks and Naive Bayes. The performance of the proposed detection system "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1610.05518","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":"2026-05-18T01:01:59Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"zvox6Fk0KCujohA2LnKQKtb/8U6I2cinCbcqFB0YM1OlDnNHEol7yfkWXnmjb0Vj1IwwJ1dRDqwOoimuzK2WAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-06T18:41:21.544094Z"},"content_sha256":"886cbc91452e53837502ce985c65669a294a794709f5ff690dac577ed2fbc5cd","schema_version":"1.0","event_id":"sha256:886cbc91452e53837502ce985c65669a294a794709f5ff690dac577ed2fbc5cd"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/MXAUBBNHEEMGK36RGNPGA3BD6A/bundle.json","state_url":"https://pith.science/pith/MXAUBBNHEEMGK36RGNPGA3BD6A/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/MXAUBBNHEEMGK36RGNPGA3BD6A/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":"2026-06-06T18:41:21Z","links":{"resolver":"https://pith.science/pith/MXAUBBNHEEMGK36RGNPGA3BD6A","bundle":"https://pith.science/pith/MXAUBBNHEEMGK36RGNPGA3BD6A/bundle.json","state":"https://pith.science/pith/MXAUBBNHEEMGK36RGNPGA3BD6A/state.json","well_known_bundle":"https://pith.science/.well-known/pith/MXAUBBNHEEMGK36RGNPGA3BD6A/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:MXAUBBNHEEMGK36RGNPGA3BD6A","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":"7f885216b5f5ee7d22d962c2788bad89fc7ce4d189beec5abada0c970c448150","cross_cats_sorted":["cs.CE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2016-10-18T10:03:25Z","title_canon_sha256":"ce76c66eff5ed424bc37fbb5688aeb6b317d53d54f1ecd882639945f72ecd805"},"schema_version":"1.0","source":{"id":"1610.05518","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1610.05518","created_at":"2026-05-18T01:01:59Z"},{"alias_kind":"arxiv_version","alias_value":"1610.05518v1","created_at":"2026-05-18T01:01:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1610.05518","created_at":"2026-05-18T01:01:59Z"},{"alias_kind":"pith_short_12","alias_value":"MXAUBBNHEEMG","created_at":"2026-05-18T12:30:32Z"},{"alias_kind":"pith_short_16","alias_value":"MXAUBBNHEEMGK36R","created_at":"2026-05-18T12:30:32Z"},{"alias_kind":"pith_short_8","alias_value":"MXAUBBNH","created_at":"2026-05-18T12:30:32Z"}],"graph_snapshots":[{"event_id":"sha256:886cbc91452e53837502ce985c65669a294a794709f5ff690dac577ed2fbc5cd","target":"graph","created_at":"2026-05-18T01:01:59Z","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":"The aim of this work is to classify the aerospace structure defects detected by eddy current non-destructive testing. The proposed method is based on the assumption that the defect is bound to the reaction of the probe coil impedance during the test. Impedance plane analysis is used to extract a feature vector from the shape of the coil impedance in the complex plane, through the use of some geometric parameters. Shape recognition is tested with three different machine-learning based classifiers: decision trees, neural networks and Naive Bayes. The performance of the proposed detection system ","authors_text":"Gianni D'Angelo, Salvatore Rampone","cross_cats":["cs.CE"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2016-10-18T10:03:25Z","title":"Shape-based defect classification for Non Destructive Testing"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1610.05518","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":"sha256:98fda76197df688ec487b3473040f76be7f131122315d7344c5feec34ce45eb9","target":"record","created_at":"2026-05-18T01:01:59Z","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":"7f885216b5f5ee7d22d962c2788bad89fc7ce4d189beec5abada0c970c448150","cross_cats_sorted":["cs.CE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2016-10-18T10:03:25Z","title_canon_sha256":"ce76c66eff5ed424bc37fbb5688aeb6b317d53d54f1ecd882639945f72ecd805"},"schema_version":"1.0","source":{"id":"1610.05518","kind":"arxiv","version":1}},"canonical_sha256":"65c14085a72118656fd1335e606c23f0191a7833109be2b5123dd9fd8affbaf8","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"65c14085a72118656fd1335e606c23f0191a7833109be2b5123dd9fd8affbaf8","first_computed_at":"2026-05-18T01:01:59.117760Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:01:59.117760Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"u1kanDSLFF+7zu7pTKYnKQfQCIGlq88aYvLP7S4i4d4/GhkQpGjJXTLHVCaQsv/AXbBCKOZYQe7oY8fF5FF8Cg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:01:59.118284Z","signed_message":"canonical_sha256_bytes"},"source_id":"1610.05518","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:98fda76197df688ec487b3473040f76be7f131122315d7344c5feec34ce45eb9","sha256:886cbc91452e53837502ce985c65669a294a794709f5ff690dac577ed2fbc5cd"],"state_sha256":"5eddd0c8017f673465e56fa5bda88fd8868afc7451a241db1d79918a393f038c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"lAhPz+7JmmDmV+RGcZwimqGN/lkyJB9Om5FGJnZOAlrs5MAJR5hfDliVoVdYpMbS4NMHhy9j4p62T1yxoI7TDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-06T18:41:21.546034Z","bundle_sha256":"dc3377e094c97a4f7f81dc21dce4b370d3ad8fe8787ba487aba9b8d3aa88d4ca"}}