{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2023:MLG7JSKPKTAMRYKTWMIKE2C33Y","short_pith_number":"pith:MLG7JSKP","canonical_record":{"source":{"id":"2301.01415","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.data-an","submitted_at":"2023-01-04T03:05:03Z","cross_cats_sorted":["cs.LG"],"title_canon_sha256":"019d6b194ed4863dff74c99c4f42a6ea84ea9d0399e4152a52393e5cf4116761","abstract_canon_sha256":"d44cfb663595df167a9bf71a92ed9929e654695d9fdd654983529f1107f076af"},"schema_version":"1.0"},"canonical_sha256":"62cdf4c94f54c0c8e153b310a2685bde1c0812eea0e31ed682b5e53d6448fe9d","source":{"kind":"arxiv","id":"2301.01415","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2301.01415","created_at":"2026-07-05T06:32:24Z"},{"alias_kind":"arxiv_version","alias_value":"2301.01415v1","created_at":"2026-07-05T06:32:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2301.01415","created_at":"2026-07-05T06:32:24Z"},{"alias_kind":"pith_short_12","alias_value":"MLG7JSKPKTAM","created_at":"2026-07-05T06:32:24Z"},{"alias_kind":"pith_short_16","alias_value":"MLG7JSKPKTAMRYKT","created_at":"2026-07-05T06:32:24Z"},{"alias_kind":"pith_short_8","alias_value":"MLG7JSKP","created_at":"2026-07-05T06:32:24Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2023:MLG7JSKPKTAMRYKTWMIKE2C33Y","target":"record","payload":{"canonical_record":{"source":{"id":"2301.01415","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.data-an","submitted_at":"2023-01-04T03:05:03Z","cross_cats_sorted":["cs.LG"],"title_canon_sha256":"019d6b194ed4863dff74c99c4f42a6ea84ea9d0399e4152a52393e5cf4116761","abstract_canon_sha256":"d44cfb663595df167a9bf71a92ed9929e654695d9fdd654983529f1107f076af"},"schema_version":"1.0"},"canonical_sha256":"62cdf4c94f54c0c8e153b310a2685bde1c0812eea0e31ed682b5e53d6448fe9d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T06:32:24.415379Z","signature_b64":"xMBgG6vDTxS1pZjdcS8wnALkRFj0C3upz9dmrBUY72lQ6pmoalIO3jdG7sok49D+i7NynEQrgq3ZbzhCLKP2Dg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"62cdf4c94f54c0c8e153b310a2685bde1c0812eea0e31ed682b5e53d6448fe9d","last_reissued_at":"2026-07-05T06:32:24.414967Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T06:32:24.414967Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2301.01415","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":"2026-07-05T06:32:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"OKwC66nXp8wPX4DiF1GJW4wRh/TjcIvW+MQDm5uHjRVL9bhsYGl8JRde8aYtttVV9mzV7CZsFkR93/PCtznDBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T17:08:36.314146Z"},"content_sha256":"5dd33a748bce1cebb12aa427dfe11ec3d865fab9ee9cb8f66078bf24acd39cdf","schema_version":"1.0","event_id":"sha256:5dd33a748bce1cebb12aa427dfe11ec3d865fab9ee9cb8f66078bf24acd39cdf"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2023:MLG7JSKPKTAMRYKTWMIKE2C33Y","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Machine Learning technique for isotopic determination of radioisotopes using HPGe $\\mathrm{\\gamma}$-ray spectra","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.LG"],"primary_cat":"physics.data-an","authors_text":"Ajeeta Khatiwada, Arvind Mohan, Jason Matheny, Marcie Lombardi, Marc Klasky","submitted_at":"2023-01-04T03:05:03Z","abstract_excerpt":"$\\mathrm{\\gamma}$-ray spectroscopy is a quantitative, non-destructive technique that may be utilized for the identification and quantitative isotopic estimation of radionuclides. Traditional methods of isotopic determination have various challenges that contribute to statistical and systematic uncertainties in the estimated isotopics. Furthermore, these methods typically require numerous pre-processing steps, and have only been rigorously tested in laboratory settings with limited shielding. In this work, we examine the application of a number of machine learning based regression algorithms as"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2301.01415","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/2301.01415/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":"2026-07-05T06:32:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"XqFRnB49OTcOnNMhIc4xgNn64opR7O+NHIx+MRB1zDZ3OfitleniNq0RBN50sJ5C3beK+52mQo4VIqocmmNECA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T17:08:36.314786Z"},"content_sha256":"4e3ef73d418c409a39e743ba910b515322c0691fbd4ae5e3f8f03f99ecc12b9b","schema_version":"1.0","event_id":"sha256:4e3ef73d418c409a39e743ba910b515322c0691fbd4ae5e3f8f03f99ecc12b9b"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/MLG7JSKPKTAMRYKTWMIKE2C33Y/bundle.json","state_url":"https://pith.science/pith/MLG7JSKPKTAMRYKTWMIKE2C33Y/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/MLG7JSKPKTAMRYKTWMIKE2C33Y/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":"2026-08-06T17:08:36Z","links":{"resolver":"https://pith.science/pith/MLG7JSKPKTAMRYKTWMIKE2C33Y","bundle":"https://pith.science/pith/MLG7JSKPKTAMRYKTWMIKE2C33Y/bundle.json","state":"https://pith.science/pith/MLG7JSKPKTAMRYKTWMIKE2C33Y/state.json","well_known_bundle":"https://pith.science/.well-known/pith/MLG7JSKPKTAMRYKTWMIKE2C33Y/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:MLG7JSKPKTAMRYKTWMIKE2C33Y","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":"d44cfb663595df167a9bf71a92ed9929e654695d9fdd654983529f1107f076af","cross_cats_sorted":["cs.LG"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.data-an","submitted_at":"2023-01-04T03:05:03Z","title_canon_sha256":"019d6b194ed4863dff74c99c4f42a6ea84ea9d0399e4152a52393e5cf4116761"},"schema_version":"1.0","source":{"id":"2301.01415","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2301.01415","created_at":"2026-07-05T06:32:24Z"},{"alias_kind":"arxiv_version","alias_value":"2301.01415v1","created_at":"2026-07-05T06:32:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2301.01415","created_at":"2026-07-05T06:32:24Z"},{"alias_kind":"pith_short_12","alias_value":"MLG7JSKPKTAM","created_at":"2026-07-05T06:32:24Z"},{"alias_kind":"pith_short_16","alias_value":"MLG7JSKPKTAMRYKT","created_at":"2026-07-05T06:32:24Z"},{"alias_kind":"pith_short_8","alias_value":"MLG7JSKP","created_at":"2026-07-05T06:32:24Z"}],"graph_snapshots":[{"event_id":"sha256:4e3ef73d418c409a39e743ba910b515322c0691fbd4ae5e3f8f03f99ecc12b9b","target":"graph","created_at":"2026-07-05T06:32:24Z","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/2301.01415/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"$\\mathrm{\\gamma}$-ray spectroscopy is a quantitative, non-destructive technique that may be utilized for the identification and quantitative isotopic estimation of radionuclides. Traditional methods of isotopic determination have various challenges that contribute to statistical and systematic uncertainties in the estimated isotopics. Furthermore, these methods typically require numerous pre-processing steps, and have only been rigorously tested in laboratory settings with limited shielding. In this work, we examine the application of a number of machine learning based regression algorithms as","authors_text":"Ajeeta Khatiwada, Arvind Mohan, Jason Matheny, Marcie Lombardi, Marc Klasky","cross_cats":["cs.LG"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.data-an","submitted_at":"2023-01-04T03:05:03Z","title":"Machine Learning technique for isotopic determination of radioisotopes using HPGe $\\mathrm{\\gamma}$-ray spectra"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2301.01415","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":"sha256:5dd33a748bce1cebb12aa427dfe11ec3d865fab9ee9cb8f66078bf24acd39cdf","target":"record","created_at":"2026-07-05T06:32:24Z","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":"d44cfb663595df167a9bf71a92ed9929e654695d9fdd654983529f1107f076af","cross_cats_sorted":["cs.LG"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.data-an","submitted_at":"2023-01-04T03:05:03Z","title_canon_sha256":"019d6b194ed4863dff74c99c4f42a6ea84ea9d0399e4152a52393e5cf4116761"},"schema_version":"1.0","source":{"id":"2301.01415","kind":"arxiv","version":1}},"canonical_sha256":"62cdf4c94f54c0c8e153b310a2685bde1c0812eea0e31ed682b5e53d6448fe9d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"62cdf4c94f54c0c8e153b310a2685bde1c0812eea0e31ed682b5e53d6448fe9d","first_computed_at":"2026-07-05T06:32:24.414967Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T06:32:24.414967Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"xMBgG6vDTxS1pZjdcS8wnALkRFj0C3upz9dmrBUY72lQ6pmoalIO3jdG7sok49D+i7NynEQrgq3ZbzhCLKP2Dg==","signature_status":"signed_v1","signed_at":"2026-07-05T06:32:24.415379Z","signed_message":"canonical_sha256_bytes"},"source_id":"2301.01415","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5dd33a748bce1cebb12aa427dfe11ec3d865fab9ee9cb8f66078bf24acd39cdf","sha256:4e3ef73d418c409a39e743ba910b515322c0691fbd4ae5e3f8f03f99ecc12b9b"],"state_sha256":"e28ac311f49d08e09cf4d8f3a09af0c9bfd9a2832b29fcf4e5ee4ac644ae75e3"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"E05ACZiQItBEZT1/XtBtCK1X/YrwoKQ1pRC2XiTJJIOGu/pIgzcM4xdJlhk9ns/hPlZFJrLeigBEFKMBKzouAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-06T17:08:36.321741Z","bundle_sha256":"cbb629cea4f7be44c6c6426c60e9d66860e8ae2249f89590b056fca26c649692"}}