{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:WB24K3JDMJUIZU56OYCM3WWFT5","short_pith_number":"pith:WB24K3JD","canonical_record":{"source":{"id":"2607.01541","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"stat.AP","submitted_at":"2026-07-01T23:41:17Z","cross_cats_sorted":[],"title_canon_sha256":"307e59f0ce0fb44206b012c3cb6423a62e7047d528cc72e5c0a0f80ca84a28e7","abstract_canon_sha256":"677b2c492a45c79c556b19f072c80464fd91690e670570d55c316376cf5b1efa"},"schema_version":"1.0"},"canonical_sha256":"b075c56d2362688cd3be7604cddac59f71b337cfec8221ceef1345fad3a34c5e","source":{"kind":"arxiv","id":"2607.01541","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2607.01541","created_at":"2026-07-03T00:17:03Z"},{"alias_kind":"arxiv_version","alias_value":"2607.01541v1","created_at":"2026-07-03T00:17:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2607.01541","created_at":"2026-07-03T00:17:03Z"},{"alias_kind":"pith_short_12","alias_value":"WB24K3JDMJUI","created_at":"2026-07-03T00:17:03Z"},{"alias_kind":"pith_short_16","alias_value":"WB24K3JDMJUIZU56","created_at":"2026-07-03T00:17:03Z"},{"alias_kind":"pith_short_8","alias_value":"WB24K3JD","created_at":"2026-07-03T00:17:03Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:WB24K3JDMJUIZU56OYCM3WWFT5","target":"record","payload":{"canonical_record":{"source":{"id":"2607.01541","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"stat.AP","submitted_at":"2026-07-01T23:41:17Z","cross_cats_sorted":[],"title_canon_sha256":"307e59f0ce0fb44206b012c3cb6423a62e7047d528cc72e5c0a0f80ca84a28e7","abstract_canon_sha256":"677b2c492a45c79c556b19f072c80464fd91690e670570d55c316376cf5b1efa"},"schema_version":"1.0"},"canonical_sha256":"b075c56d2362688cd3be7604cddac59f71b337cfec8221ceef1345fad3a34c5e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-03T00:17:03.562334Z","signature_b64":"ot4veJUxr5r281tx9HILJUEGIKV2NmsRA8XbOxi89ThQzbNxuh05fgHq8blMKBEOmo6ivUxwDiGc0ZxFAjdhCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b075c56d2362688cd3be7604cddac59f71b337cfec8221ceef1345fad3a34c5e","last_reissued_at":"2026-07-03T00:17:03.561886Z","signature_status":"signed_v1","first_computed_at":"2026-07-03T00:17:03.561886Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2607.01541","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":"2026-07-03T00:17:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"b/bEkDlnfWNFeJWYGRbbTF7NSAXPapHjOqQ3bH+7z01pgRC/iitV97eexAaC/fnioca1c+UrcGWIh4xHx9BJBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-06T16:02:42.229222Z"},"content_sha256":"8a9009627a606c0e36f981dd57833344b4288fcbd0f7a6b5e8af28e3f31ba9d7","schema_version":"1.0","event_id":"sha256:8a9009627a606c0e36f981dd57833344b4288fcbd0f7a6b5e8af28e3f31ba9d7"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:WB24K3JDMJUIZU56OYCM3WWFT5","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"An unsupervised kernel norm monitoring for fault detection in a time series photovoltaic system","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"stat.AP","authors_text":"Heikki Haario, Lassi Roininen, Satu-Pia Reinikainen, Victoria Jorry, Zina-Sabrina Duma","submitted_at":"2026-07-01T23:41:17Z","abstract_excerpt":"Grid-connected photovoltaic systems (GCPVS) are generally robust but remain susceptible to faults that can compromise energy conversion efficiency or raise safety concerns. Promptly and automatically detecting such anomalies is therefore essential for maintaining system reliability and performance. However, in practice, labeled fault data are rarely available in real-world deployments, which limits the applicability of supervised approaches. Conventional unsupervised baseline models, including a one-class support vector machine (OCSVM), isolation forest (iForest), and local outlier factor (LOF"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.01541","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2607.01541/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-03T00:17:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"76sOZ3JVFTWxgoRiQq3HgGgQkCz+a8vYzeNl09KSJ33W07vWrYUl3ShMUSUrpdRLyNYA1sSuHbXrJk3Xd7E7Bg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-06T16:02:42.229609Z"},"content_sha256":"b5bf740c09d4e38cc9642e00ceb7f567b359cee189650e9757b2f9ac71542468","schema_version":"1.0","event_id":"sha256:b5bf740c09d4e38cc9642e00ceb7f567b359cee189650e9757b2f9ac71542468"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/WB24K3JDMJUIZU56OYCM3WWFT5/bundle.json","state_url":"https://pith.science/pith/WB24K3JDMJUIZU56OYCM3WWFT5/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/WB24K3JDMJUIZU56OYCM3WWFT5/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":"2026-07-06T16:02:42Z","links":{"resolver":"https://pith.science/pith/WB24K3JDMJUIZU56OYCM3WWFT5","bundle":"https://pith.science/pith/WB24K3JDMJUIZU56OYCM3WWFT5/bundle.json","state":"https://pith.science/pith/WB24K3JDMJUIZU56OYCM3WWFT5/state.json","well_known_bundle":"https://pith.science/.well-known/pith/WB24K3JDMJUIZU56OYCM3WWFT5/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:WB24K3JDMJUIZU56OYCM3WWFT5","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":"677b2c492a45c79c556b19f072c80464fd91690e670570d55c316376cf5b1efa","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"stat.AP","submitted_at":"2026-07-01T23:41:17Z","title_canon_sha256":"307e59f0ce0fb44206b012c3cb6423a62e7047d528cc72e5c0a0f80ca84a28e7"},"schema_version":"1.0","source":{"id":"2607.01541","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2607.01541","created_at":"2026-07-03T00:17:03Z"},{"alias_kind":"arxiv_version","alias_value":"2607.01541v1","created_at":"2026-07-03T00:17:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2607.01541","created_at":"2026-07-03T00:17:03Z"},{"alias_kind":"pith_short_12","alias_value":"WB24K3JDMJUI","created_at":"2026-07-03T00:17:03Z"},{"alias_kind":"pith_short_16","alias_value":"WB24K3JDMJUIZU56","created_at":"2026-07-03T00:17:03Z"},{"alias_kind":"pith_short_8","alias_value":"WB24K3JD","created_at":"2026-07-03T00:17:03Z"}],"graph_snapshots":[{"event_id":"sha256:b5bf740c09d4e38cc9642e00ceb7f567b359cee189650e9757b2f9ac71542468","target":"graph","created_at":"2026-07-03T00:17:03Z","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/2607.01541/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Grid-connected photovoltaic systems (GCPVS) are generally robust but remain susceptible to faults that can compromise energy conversion efficiency or raise safety concerns. Promptly and automatically detecting such anomalies is therefore essential for maintaining system reliability and performance. However, in practice, labeled fault data are rarely available in real-world deployments, which limits the applicability of supervised approaches. Conventional unsupervised baseline models, including a one-class support vector machine (OCSVM), isolation forest (iForest), and local outlier factor (LOF","authors_text":"Heikki Haario, Lassi Roininen, Satu-Pia Reinikainen, Victoria Jorry, Zina-Sabrina Duma","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"stat.AP","submitted_at":"2026-07-01T23:41:17Z","title":"An unsupervised kernel norm monitoring for fault detection in a time series photovoltaic system"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.01541","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":"sha256:8a9009627a606c0e36f981dd57833344b4288fcbd0f7a6b5e8af28e3f31ba9d7","target":"record","created_at":"2026-07-03T00:17:03Z","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":"677b2c492a45c79c556b19f072c80464fd91690e670570d55c316376cf5b1efa","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"stat.AP","submitted_at":"2026-07-01T23:41:17Z","title_canon_sha256":"307e59f0ce0fb44206b012c3cb6423a62e7047d528cc72e5c0a0f80ca84a28e7"},"schema_version":"1.0","source":{"id":"2607.01541","kind":"arxiv","version":1}},"canonical_sha256":"b075c56d2362688cd3be7604cddac59f71b337cfec8221ceef1345fad3a34c5e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b075c56d2362688cd3be7604cddac59f71b337cfec8221ceef1345fad3a34c5e","first_computed_at":"2026-07-03T00:17:03.561886Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-03T00:17:03.561886Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ot4veJUxr5r281tx9HILJUEGIKV2NmsRA8XbOxi89ThQzbNxuh05fgHq8blMKBEOmo6ivUxwDiGc0ZxFAjdhCw==","signature_status":"signed_v1","signed_at":"2026-07-03T00:17:03.562334Z","signed_message":"canonical_sha256_bytes"},"source_id":"2607.01541","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8a9009627a606c0e36f981dd57833344b4288fcbd0f7a6b5e8af28e3f31ba9d7","sha256:b5bf740c09d4e38cc9642e00ceb7f567b359cee189650e9757b2f9ac71542468"],"state_sha256":"83881f4441d80a958ebd16b10c87dbf1d4453eb489bd31d7cdb891165524de82"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"S6NEJbxj0rJudFJzclgLfTlzYC7ouWKZxQcVTTx5oEYxqCP+ujPN5LNVs4P8pM3ngWjRv0iWS2/FwVufaRL1Cw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-06T16:02:42.231530Z","bundle_sha256":"120c928fd640079ad05aab3aba542bd63b913e024bf2fcb056c5b5f15dd18496"}}