{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:XZPUFPUX5ZDXVJPLKEAADXTQL2","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":"919693481868ba446b41edcec171a97a5f1448446118b9e4ede90967542e17ca","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.data-an","submitted_at":"2018-03-01T04:34:25Z","title_canon_sha256":"a991252db3ec07c507c28e3f239395a3f5a7389496fb02d62b2e636949dd717f"},"schema_version":"1.0","source":{"id":"1803.00208","kind":"arxiv","version":4}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1803.00208","created_at":"2026-05-17T23:50:16Z"},{"alias_kind":"arxiv_version","alias_value":"1803.00208v4","created_at":"2026-05-17T23:50:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1803.00208","created_at":"2026-05-17T23:50:16Z"},{"alias_kind":"pith_short_12","alias_value":"XZPUFPUX5ZDX","created_at":"2026-05-18T12:33:04Z"},{"alias_kind":"pith_short_16","alias_value":"XZPUFPUX5ZDXVJPL","created_at":"2026-05-18T12:33:04Z"},{"alias_kind":"pith_short_8","alias_value":"XZPUFPUX","created_at":"2026-05-18T12:33:04Z"}],"graph_snapshots":[{"event_id":"sha256:26e22c3e893c18fd57897866b35411dff63b97797091d93bbd3c3a48764d160a","target":"graph","created_at":"2026-05-17T23:50:16Z","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":"Identifying the qualitative changes in time-series data provides insights into the dynamics associated with such data. Such qualitative changes can be detected through topological approaches, which first embed the data into a high-dimensional space using a time-delay parameter and subsequently extract topological features describing the shape of the data from the embedded points. However, the essential topological features that are extracted using a single time delay are considered to be insufficient for evaluating the aforementioned qualitative changes, even when a well-selected time delay is","authors_text":"Quoc Hoan Tran, Yoshihiko Hasegawa","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.data-an","submitted_at":"2018-03-01T04:34:25Z","title":"Topological time-series analysis with delay-variant embedding"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1803.00208","kind":"arxiv","version":4},"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":"sha256:3078e4f793342cc8bd5da031f679b96778091e083fb27caa7a99ff748cef3860","target":"record","created_at":"2026-05-17T23:50:16Z","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":"919693481868ba446b41edcec171a97a5f1448446118b9e4ede90967542e17ca","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.data-an","submitted_at":"2018-03-01T04:34:25Z","title_canon_sha256":"a991252db3ec07c507c28e3f239395a3f5a7389496fb02d62b2e636949dd717f"},"schema_version":"1.0","source":{"id":"1803.00208","kind":"arxiv","version":4}},"canonical_sha256":"be5f42be97ee477aa5eb510001de705eb1a82422bbc9e3e4e1484b1a7cba22a3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"be5f42be97ee477aa5eb510001de705eb1a82422bbc9e3e4e1484b1a7cba22a3","first_computed_at":"2026-05-17T23:50:16.072289Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:50:16.072289Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Kztoopg+LM/KEgmK3jHIxILCLke/pda5oE1vIRLeLKAecuLAHr1pInU5VKUnVK4R1uISbv34qZvIscl7fABEAQ==","signature_status":"signed_v1","signed_at":"2026-05-17T23:50:16.072959Z","signed_message":"canonical_sha256_bytes"},"source_id":"1803.00208","source_kind":"arxiv","source_version":4}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3078e4f793342cc8bd5da031f679b96778091e083fb27caa7a99ff748cef3860","sha256:26e22c3e893c18fd57897866b35411dff63b97797091d93bbd3c3a48764d160a"],"state_sha256":"20319d9404c4fc0bb36bf640ea7c280aeea5a05e186167cda980ebe2284a987f"}