{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:P6MPU2T6KGGAOINIMOIPYE7ZIY","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":"e50fcb6321bf9d095371e72cfe197a6bfbbeb432e3364843153e677795cb913f","cross_cats_sorted":["cs.CG","math.AT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2016-07-07T23:39:29Z","title_canon_sha256":"2e4fabe61417a2e8a50b940160961061357e8db9038041389c50a7b3e12c5997"},"schema_version":"1.0","source":{"id":"1607.02196","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1607.02196","created_at":"2026-05-18T01:11:16Z"},{"alias_kind":"arxiv_version","alias_value":"1607.02196v2","created_at":"2026-05-18T01:11:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1607.02196","created_at":"2026-05-18T01:11:16Z"},{"alias_kind":"pith_short_12","alias_value":"P6MPU2T6KGGA","created_at":"2026-05-18T12:30:39Z"},{"alias_kind":"pith_short_16","alias_value":"P6MPU2T6KGGAOINI","created_at":"2026-05-18T12:30:39Z"},{"alias_kind":"pith_short_8","alias_value":"P6MPU2T6","created_at":"2026-05-18T12:30:39Z"}],"graph_snapshots":[{"event_id":"sha256:f113bd252f8cce9641c39d1c8cf0e0d8401133b7b74c9ba4e83281718c0106f3","target":"graph","created_at":"2026-05-18T01:11:16Z","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 existence of characteristic structure, or shape, in complex data sets has been recognized as increasingly important for mathematical data analysis. This realization has motivated the development of new tools such as persistent homology for exploring topological invariants, or features, in large data sets. In this paper we apply persistent homology to the characterization of gas plumes in time dependent sequences of hyperspectral cubes, i.e. the analysis of 4-way arrays. We investigate hyperspectral movies of Long-Wavelength Infrared data monitoring an experimental release of chemical simul","authors_text":"Chris Peterson, Lori Ziegelmeier, Michael Kirby, Sofya Chepushtanova","cross_cats":["cs.CG","math.AT"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2016-07-07T23:39:29Z","title":"Persistent Homology on Grassmann Manifolds for Analysis of Hyperspectral Movies"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1607.02196","kind":"arxiv","version":2},"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:d37b0c89bc69703221baf494884680dd7c05f471724048a14235565bd5978f26","target":"record","created_at":"2026-05-18T01:11:16Z","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":"e50fcb6321bf9d095371e72cfe197a6bfbbeb432e3364843153e677795cb913f","cross_cats_sorted":["cs.CG","math.AT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2016-07-07T23:39:29Z","title_canon_sha256":"2e4fabe61417a2e8a50b940160961061357e8db9038041389c50a7b3e12c5997"},"schema_version":"1.0","source":{"id":"1607.02196","kind":"arxiv","version":2}},"canonical_sha256":"7f98fa6a7e518c0721a86390fc13f94618bb42a64569f518358eb9cffe571ffa","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7f98fa6a7e518c0721a86390fc13f94618bb42a64569f518358eb9cffe571ffa","first_computed_at":"2026-05-18T01:11:16.939780Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:11:16.939780Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"2CUZ0RJlbxLZzgN6E6mXDELPUQpkU/TeM4i+AoBkzxIGrlY3BP583RfSOlRwqMOU7J7wKRfFJLMfZXllHV0qCA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:11:16.940253Z","signed_message":"canonical_sha256_bytes"},"source_id":"1607.02196","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d37b0c89bc69703221baf494884680dd7c05f471724048a14235565bd5978f26","sha256:f113bd252f8cce9641c39d1c8cf0e0d8401133b7b74c9ba4e83281718c0106f3"],"state_sha256":"5018c35f8d3066341db9cd95fe58c6e6a2dc7771364365d80096c3c7ae301e9c"}