{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2022:OPCX7LL36Q3LJS5UQZS3TO2UJZ","short_pith_number":"pith:OPCX7LL3","canonical_record":{"source":{"id":"2203.12160","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.LG","submitted_at":"2022-03-23T03:07:10Z","cross_cats_sorted":[],"title_canon_sha256":"6c7b578b0e3961802dc26852010676f1b13f1eaf3a67c9fedb0c4f6ed08f8aee","abstract_canon_sha256":"cad2f6541776b8e00235e70f5d394b3b6d66fff9d748deefcf8272a5ac87fdb3"},"schema_version":"1.0"},"canonical_sha256":"73c57fad7bf436b4cbb48665b9bb544e67dcfd699d84038375260c5f63607660","source":{"kind":"arxiv","id":"2203.12160","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2203.12160","created_at":"2026-07-05T04:07:56Z"},{"alias_kind":"arxiv_version","alias_value":"2203.12160v1","created_at":"2026-07-05T04:07:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2203.12160","created_at":"2026-07-05T04:07:56Z"},{"alias_kind":"pith_short_12","alias_value":"OPCX7LL36Q3L","created_at":"2026-07-05T04:07:56Z"},{"alias_kind":"pith_short_16","alias_value":"OPCX7LL36Q3LJS5U","created_at":"2026-07-05T04:07:56Z"},{"alias_kind":"pith_short_8","alias_value":"OPCX7LL3","created_at":"2026-07-05T04:07:56Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2022:OPCX7LL36Q3LJS5UQZS3TO2UJZ","target":"record","payload":{"canonical_record":{"source":{"id":"2203.12160","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.LG","submitted_at":"2022-03-23T03:07:10Z","cross_cats_sorted":[],"title_canon_sha256":"6c7b578b0e3961802dc26852010676f1b13f1eaf3a67c9fedb0c4f6ed08f8aee","abstract_canon_sha256":"cad2f6541776b8e00235e70f5d394b3b6d66fff9d748deefcf8272a5ac87fdb3"},"schema_version":"1.0"},"canonical_sha256":"73c57fad7bf436b4cbb48665b9bb544e67dcfd699d84038375260c5f63607660","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T04:07:56.509210Z","signature_b64":"AInu+EUw/ys0odugCRsTMEHh5XYcWJQddaT94v5tOUICpcttX4B4afq483NLE12D2mBinr0y7yH8LIyGCpBGCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"73c57fad7bf436b4cbb48665b9bb544e67dcfd699d84038375260c5f63607660","last_reissued_at":"2026-07-05T04:07:56.508816Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T04:07:56.508816Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2203.12160","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":"2026-07-05T04:07:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9mZU7pA+xt20Djr0DB1giVaSOdo30FOCvmaSjeewyYCqPes0CLesd9cvvoY+eucmcpu53OgHu2IgEKy5j1pNCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-06T20:37:29.967518Z"},"content_sha256":"54fbadec2a7251b33a1ba545673366540ce1177af3140581c172ca653caca541","schema_version":"1.0","event_id":"sha256:54fbadec2a7251b33a1ba545673366540ce1177af3140581c172ca653caca541"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2022:OPCX7LL36Q3LJS5UQZS3TO2UJZ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"An Emulation Framework for Fire Front Spread","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.LG","authors_text":"Andrew Bolt, Carolyn Huston, Joel Janek Dabrowski, Petra Kuhnert","submitted_at":"2022-03-23T03:07:10Z","abstract_excerpt":"Forecasting bushfire spread is an important element in fire prevention and response efforts. Empirical observations of bushfire spread can be used to estimate fire response under certain conditions. These observations form rate-of-spread models, which can be used to generate simulations. We use machine learning to drive the emulation approach for bushfires and show that emulation has the capacity to closely reproduce simulated fire-front data. We present a preliminary emulator approach with the capacity for fast emulation of complex simulations. Large numbers of predictions can then be generat"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2203.12160","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/2203.12160/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":"2026-07-05T04:07:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"72XbJYDuRM3lKjDYf6W6aO+zYV6au5SqttCWvovhpBNeBbNKRzBKdaOL/UdrDTGq9kBjRmosPSfCVsgWlP4xAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-06T20:37:29.967882Z"},"content_sha256":"47fe00344c3ae7bf0703dcde339537467a1b8ec4539a970fd318b23f8127b390","schema_version":"1.0","event_id":"sha256:47fe00344c3ae7bf0703dcde339537467a1b8ec4539a970fd318b23f8127b390"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/OPCX7LL36Q3LJS5UQZS3TO2UJZ/bundle.json","state_url":"https://pith.science/pith/OPCX7LL36Q3LJS5UQZS3TO2UJZ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/OPCX7LL36Q3LJS5UQZS3TO2UJZ/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":"2026-07-06T20:37:29Z","links":{"resolver":"https://pith.science/pith/OPCX7LL36Q3LJS5UQZS3TO2UJZ","bundle":"https://pith.science/pith/OPCX7LL36Q3LJS5UQZS3TO2UJZ/bundle.json","state":"https://pith.science/pith/OPCX7LL36Q3LJS5UQZS3TO2UJZ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/OPCX7LL36Q3LJS5UQZS3TO2UJZ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:OPCX7LL36Q3LJS5UQZS3TO2UJZ","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":"cad2f6541776b8e00235e70f5d394b3b6d66fff9d748deefcf8272a5ac87fdb3","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.LG","submitted_at":"2022-03-23T03:07:10Z","title_canon_sha256":"6c7b578b0e3961802dc26852010676f1b13f1eaf3a67c9fedb0c4f6ed08f8aee"},"schema_version":"1.0","source":{"id":"2203.12160","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2203.12160","created_at":"2026-07-05T04:07:56Z"},{"alias_kind":"arxiv_version","alias_value":"2203.12160v1","created_at":"2026-07-05T04:07:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2203.12160","created_at":"2026-07-05T04:07:56Z"},{"alias_kind":"pith_short_12","alias_value":"OPCX7LL36Q3L","created_at":"2026-07-05T04:07:56Z"},{"alias_kind":"pith_short_16","alias_value":"OPCX7LL36Q3LJS5U","created_at":"2026-07-05T04:07:56Z"},{"alias_kind":"pith_short_8","alias_value":"OPCX7LL3","created_at":"2026-07-05T04:07:56Z"}],"graph_snapshots":[{"event_id":"sha256:47fe00344c3ae7bf0703dcde339537467a1b8ec4539a970fd318b23f8127b390","target":"graph","created_at":"2026-07-05T04:07:56Z","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/2203.12160/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Forecasting bushfire spread is an important element in fire prevention and response efforts. Empirical observations of bushfire spread can be used to estimate fire response under certain conditions. These observations form rate-of-spread models, which can be used to generate simulations. We use machine learning to drive the emulation approach for bushfires and show that emulation has the capacity to closely reproduce simulated fire-front data. We present a preliminary emulator approach with the capacity for fast emulation of complex simulations. Large numbers of predictions can then be generat","authors_text":"Andrew Bolt, Carolyn Huston, Joel Janek Dabrowski, Petra Kuhnert","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.LG","submitted_at":"2022-03-23T03:07:10Z","title":"An Emulation Framework for Fire Front Spread"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2203.12160","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":"sha256:54fbadec2a7251b33a1ba545673366540ce1177af3140581c172ca653caca541","target":"record","created_at":"2026-07-05T04:07:56Z","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":"cad2f6541776b8e00235e70f5d394b3b6d66fff9d748deefcf8272a5ac87fdb3","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.LG","submitted_at":"2022-03-23T03:07:10Z","title_canon_sha256":"6c7b578b0e3961802dc26852010676f1b13f1eaf3a67c9fedb0c4f6ed08f8aee"},"schema_version":"1.0","source":{"id":"2203.12160","kind":"arxiv","version":1}},"canonical_sha256":"73c57fad7bf436b4cbb48665b9bb544e67dcfd699d84038375260c5f63607660","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"73c57fad7bf436b4cbb48665b9bb544e67dcfd699d84038375260c5f63607660","first_computed_at":"2026-07-05T04:07:56.508816Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T04:07:56.508816Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"AInu+EUw/ys0odugCRsTMEHh5XYcWJQddaT94v5tOUICpcttX4B4afq483NLE12D2mBinr0y7yH8LIyGCpBGCw==","signature_status":"signed_v1","signed_at":"2026-07-05T04:07:56.509210Z","signed_message":"canonical_sha256_bytes"},"source_id":"2203.12160","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:54fbadec2a7251b33a1ba545673366540ce1177af3140581c172ca653caca541","sha256:47fe00344c3ae7bf0703dcde339537467a1b8ec4539a970fd318b23f8127b390"],"state_sha256":"78473ccd83e995e1dc4a4d808a371f9e6bb6d4b83cb2b71083c6d56b0e908be2"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"jpX+b9qyNzbIFhUCLBBq/LAZ4nVwzQCmaqJQ/eneeYl6Gn6RnWM0ElWvNVb5U1pn1bFPt5S4BbjLuFSlZ2OfCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-06T20:37:29.969994Z","bundle_sha256":"95efa6eb5c0441ba99b47ab7b5b136ddf8489f6f35f0ddfb0beabd7709e64190"}}