{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:IZLM37CV2X7Z4FA4N6Z5PPWTNF","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":"b782a0a03eb09465b11ac2b9da365c02c3c3ba409386a05c1c9324bbc9a0c631","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2020-11-11T19:00:03Z","title_canon_sha256":"5e851d8d922673674edbac47ddeb406c9ef7bbd529a135925c55015e46071517"},"schema_version":"1.0","source":{"id":"2011.06001","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2011.06001","created_at":"2026-07-05T02:08:13Z"},{"alias_kind":"arxiv_version","alias_value":"2011.06001v1","created_at":"2026-07-05T02:08:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2011.06001","created_at":"2026-07-05T02:08:13Z"},{"alias_kind":"pith_short_12","alias_value":"IZLM37CV2X7Z","created_at":"2026-07-05T02:08:13Z"},{"alias_kind":"pith_short_16","alias_value":"IZLM37CV2X7Z4FA4","created_at":"2026-07-05T02:08:13Z"},{"alias_kind":"pith_short_8","alias_value":"IZLM37CV","created_at":"2026-07-05T02:08:13Z"}],"graph_snapshots":[{"event_id":"sha256:d25ff61809d68443ff67ea64f4dd4207974de842bd610ca0789a46412d723cb0","target":"graph","created_at":"2026-07-05T02:08:13Z","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/2011.06001/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The Low Frequency Array (LOFAR) Two-metre Sky Survey (LoTSS) is a low-frequency radio continuum survey of the Northern sky at an unparalleled resolution and sensitivity. In order to fully exploit this huge dataset and those produced by the Square Kilometre Array in the next decade, automated methods in machine learning and data-mining will be increasingly essential both for morphological classifications and for identifying optical counterparts to the radio sources. Using self-organising maps (SOMs), a form of unsupervised machine learning, we created a dimensionality reduction of the radio mor","authors_text":"Beatriz Mingo, Dan Smith, Huub J.A. R\\\"ottgering, Kai L. Polsterer, Kenneth J. Duncan, Marcus Br\\\"uggen, Marisa Brienza, Martin J. Hardcastle, Nika Jurlin, Philip N. Best, Rafa\\\"el I.J. Mostert, Raffaella Morganti, Tim Shimwell, Wendy L. Williams","cross_cats":["astro-ph.GA"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2020-11-11T19:00:03Z","title":"Unveiling the rarest morphologies of the LOFAR Two-metre Sky Survey radio source population with self-organised maps"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2011.06001","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":"sha256:995aea03eed26a22da624ebb64e141e248bb328dbd89a5882874e85d62e31694","target":"record","created_at":"2026-07-05T02:08:13Z","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":"b782a0a03eb09465b11ac2b9da365c02c3c3ba409386a05c1c9324bbc9a0c631","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2020-11-11T19:00:03Z","title_canon_sha256":"5e851d8d922673674edbac47ddeb406c9ef7bbd529a135925c55015e46071517"},"schema_version":"1.0","source":{"id":"2011.06001","kind":"arxiv","version":1}},"canonical_sha256":"4656cdfc55d5ff9e141c6fb3d7bed3695ea9e4e584fba8a42fa3843e91d66056","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4656cdfc55d5ff9e141c6fb3d7bed3695ea9e4e584fba8a42fa3843e91d66056","first_computed_at":"2026-07-05T02:08:13.928899Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:08:13.928899Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"vKmMHYLvnCIuTkljAd9ut5Y9b3bQLpnsC5lpP28/guKjwpTjJfTQGCu4oUO1JqjJAdD8R3l0Y6TbpbA4T5MRAw==","signature_status":"signed_v1","signed_at":"2026-07-05T02:08:13.929584Z","signed_message":"canonical_sha256_bytes"},"source_id":"2011.06001","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:995aea03eed26a22da624ebb64e141e248bb328dbd89a5882874e85d62e31694","sha256:d25ff61809d68443ff67ea64f4dd4207974de842bd610ca0789a46412d723cb0"],"state_sha256":"869e617d1c77a5f1b05cb46bed215cf5f3e00ac8b3284d5ea4d0b32736276e55"}