{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2007:AQ7TBBHHKAJ7BQ5R6MBKEPTGAK","short_pith_number":"pith:AQ7TBBHH","canonical_record":{"source":{"id":"physics/0703039","kind":"arxiv","version":5},"metadata":{"license":"","primary_cat":"physics.data-an","submitted_at":"2007-03-04T19:45:41Z","cross_cats_sorted":[],"title_canon_sha256":"8547e789c73f6da2a053acef847eb13b4153478b5a205cf0a399818b8c2fd80a","abstract_canon_sha256":"6f1e9f922a961a0db614b2c4d878a8698f03bfce3b125bb34bbd5487d704a9af"},"schema_version":"1.0"},"canonical_sha256":"043f3084e75013f0c3b1f302a23e6602b2495ab522cb9f1760fb58b4c039313a","source":{"kind":"arxiv","id":"physics/0703039","version":5},"source_aliases":[{"alias_kind":"arxiv","alias_value":"physics/0703039","created_at":"2026-05-18T00:09:06Z"},{"alias_kind":"arxiv_version","alias_value":"physics/0703039v5","created_at":"2026-05-18T00:09:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.physics/0703039","created_at":"2026-05-18T00:09:06Z"},{"alias_kind":"pith_short_12","alias_value":"AQ7TBBHHKAJ7","created_at":"2026-05-18T12:25:55Z"},{"alias_kind":"pith_short_16","alias_value":"AQ7TBBHHKAJ7BQ5R","created_at":"2026-05-18T12:25:55Z"},{"alias_kind":"pith_short_8","alias_value":"AQ7TBBHH","created_at":"2026-05-18T12:25:55Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2007:AQ7TBBHHKAJ7BQ5R6MBKEPTGAK","target":"record","payload":{"canonical_record":{"source":{"id":"physics/0703039","kind":"arxiv","version":5},"metadata":{"license":"","primary_cat":"physics.data-an","submitted_at":"2007-03-04T19:45:41Z","cross_cats_sorted":[],"title_canon_sha256":"8547e789c73f6da2a053acef847eb13b4153478b5a205cf0a399818b8c2fd80a","abstract_canon_sha256":"6f1e9f922a961a0db614b2c4d878a8698f03bfce3b125bb34bbd5487d704a9af"},"schema_version":"1.0"},"canonical_sha256":"043f3084e75013f0c3b1f302a23e6602b2495ab522cb9f1760fb58b4c039313a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:09:06.049299Z","signature_b64":"+injmaEL3hhXtLPFtYnIuVGAqa5fVG4OR29yIoCUUkSeNF6ysRIQF/zasf350NnLlFkvi9U0xN7tPqkuSLihCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"043f3084e75013f0c3b1f302a23e6602b2495ab522cb9f1760fb58b4c039313a","last_reissued_at":"2026-05-18T00:09:06.048758Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:09:06.048758Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"physics/0703039","source_version":5,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:09:06Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"DpCEHk+Qh+tWL+20kocTm1NnfXbwaRYADfIkh4Qo4mIUJJxxgqtHDbWScU6TKNemA1G7+yq048neq2s/MnnTCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T09:12:33.342243Z"},"content_sha256":"74d020bf8e391722c5693f7c6df1af3cea71a9e176c0e9006e940dccfb3b5317","schema_version":"1.0","event_id":"sha256:74d020bf8e391722c5693f7c6df1af3cea71a9e176c0e9006e940dccfb3b5317"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2007:AQ7TBBHHKAJ7BQ5R6MBKEPTGAK","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"TMVA - Toolkit for Multivariate Data Analysis","license":"","headline":"","cross_cats":[],"primary_cat":"physics.data-an","authors_text":"A. Christov, A. Hoecker, A. Krasznahorkay Jr., A. Robert, A. Voigt, A. Zemla, D. Dannheim, D. Schouten, E. von Toerne, F. Tegenfeldt, H. Voss, J. Stelzer, J. Therhaag, K. Danielowski, K. Kraszewski, K. Voss, M. Backes, M. Jachowski, M. Kruk, M. Wolter, O. Cohen, P. Speckmayer, R. Ospanov, S. Henrot-Versille, T. Carli, X. Prudent, Y. Mahalalel","submitted_at":"2007-03-04T19:45:41Z","abstract_excerpt":"In high-energy physics, with the search for ever smaller signals in ever larger data sets, it has become essential to extract a maximum of the available information from the data. Multivariate classification methods based on machine learning techniques have become a fundamental ingredient to most analyses. Also the multivariate classifiers themselves have significantly evolved in recent years. Statisticians have found new ways to tune and to combine classifiers to further gain in performance. Integrated into the analysis framework ROOT, TMVA is a toolkit which hosts a large variety of multivar"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"physics/0703039","kind":"arxiv","version":5},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"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":"2026-05-18T00:09:06Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"62dOROAtnDDoO7oMaLeGwomRfxCHktusaRcjFr027CaOssbjF5+NeZ3VRQSJBKWlCGXLciQfHgDOPkZAM/uyDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T09:12:33.342927Z"},"content_sha256":"23435194ba087a32866a0f73028f24e5807fd534b3f3397d7ca8631787c77d23","schema_version":"1.0","event_id":"sha256:23435194ba087a32866a0f73028f24e5807fd534b3f3397d7ca8631787c77d23"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/AQ7TBBHHKAJ7BQ5R6MBKEPTGAK/bundle.json","state_url":"https://pith.science/pith/AQ7TBBHHKAJ7BQ5R6MBKEPTGAK/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/AQ7TBBHHKAJ7BQ5R6MBKEPTGAK/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":"2026-05-26T09:12:33Z","links":{"resolver":"https://pith.science/pith/AQ7TBBHHKAJ7BQ5R6MBKEPTGAK","bundle":"https://pith.science/pith/AQ7TBBHHKAJ7BQ5R6MBKEPTGAK/bundle.json","state":"https://pith.science/pith/AQ7TBBHHKAJ7BQ5R6MBKEPTGAK/state.json","well_known_bundle":"https://pith.science/.well-known/pith/AQ7TBBHHKAJ7BQ5R6MBKEPTGAK/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2007:AQ7TBBHHKAJ7BQ5R6MBKEPTGAK","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":"6f1e9f922a961a0db614b2c4d878a8698f03bfce3b125bb34bbd5487d704a9af","cross_cats_sorted":[],"license":"","primary_cat":"physics.data-an","submitted_at":"2007-03-04T19:45:41Z","title_canon_sha256":"8547e789c73f6da2a053acef847eb13b4153478b5a205cf0a399818b8c2fd80a"},"schema_version":"1.0","source":{"id":"physics/0703039","kind":"arxiv","version":5}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"physics/0703039","created_at":"2026-05-18T00:09:06Z"},{"alias_kind":"arxiv_version","alias_value":"physics/0703039v5","created_at":"2026-05-18T00:09:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.physics/0703039","created_at":"2026-05-18T00:09:06Z"},{"alias_kind":"pith_short_12","alias_value":"AQ7TBBHHKAJ7","created_at":"2026-05-18T12:25:55Z"},{"alias_kind":"pith_short_16","alias_value":"AQ7TBBHHKAJ7BQ5R","created_at":"2026-05-18T12:25:55Z"},{"alias_kind":"pith_short_8","alias_value":"AQ7TBBHH","created_at":"2026-05-18T12:25:55Z"}],"graph_snapshots":[{"event_id":"sha256:23435194ba087a32866a0f73028f24e5807fd534b3f3397d7ca8631787c77d23","target":"graph","created_at":"2026-05-18T00:09:06Z","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":"In high-energy physics, with the search for ever smaller signals in ever larger data sets, it has become essential to extract a maximum of the available information from the data. Multivariate classification methods based on machine learning techniques have become a fundamental ingredient to most analyses. Also the multivariate classifiers themselves have significantly evolved in recent years. Statisticians have found new ways to tune and to combine classifiers to further gain in performance. Integrated into the analysis framework ROOT, TMVA is a toolkit which hosts a large variety of multivar","authors_text":"A. Christov, A. Hoecker, A. Krasznahorkay Jr., A. Robert, A. Voigt, A. Zemla, D. Dannheim, D. Schouten, E. von Toerne, F. Tegenfeldt, H. Voss, J. Stelzer, J. Therhaag, K. Danielowski, K. Kraszewski, K. Voss, M. Backes, M. Jachowski, M. Kruk, M. Wolter, O. Cohen, P. Speckmayer, R. Ospanov, S. Henrot-Versille, T. Carli, X. Prudent, Y. Mahalalel","cross_cats":[],"headline":"","license":"","primary_cat":"physics.data-an","submitted_at":"2007-03-04T19:45:41Z","title":"TMVA - Toolkit for Multivariate Data Analysis"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"physics/0703039","kind":"arxiv","version":5},"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":"sha256:74d020bf8e391722c5693f7c6df1af3cea71a9e176c0e9006e940dccfb3b5317","target":"record","created_at":"2026-05-18T00:09:06Z","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":"6f1e9f922a961a0db614b2c4d878a8698f03bfce3b125bb34bbd5487d704a9af","cross_cats_sorted":[],"license":"","primary_cat":"physics.data-an","submitted_at":"2007-03-04T19:45:41Z","title_canon_sha256":"8547e789c73f6da2a053acef847eb13b4153478b5a205cf0a399818b8c2fd80a"},"schema_version":"1.0","source":{"id":"physics/0703039","kind":"arxiv","version":5}},"canonical_sha256":"043f3084e75013f0c3b1f302a23e6602b2495ab522cb9f1760fb58b4c039313a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"043f3084e75013f0c3b1f302a23e6602b2495ab522cb9f1760fb58b4c039313a","first_computed_at":"2026-05-18T00:09:06.048758Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:09:06.048758Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"+injmaEL3hhXtLPFtYnIuVGAqa5fVG4OR29yIoCUUkSeNF6ysRIQF/zasf350NnLlFkvi9U0xN7tPqkuSLihCg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:09:06.049299Z","signed_message":"canonical_sha256_bytes"},"source_id":"physics/0703039","source_kind":"arxiv","source_version":5}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:74d020bf8e391722c5693f7c6df1af3cea71a9e176c0e9006e940dccfb3b5317","sha256:23435194ba087a32866a0f73028f24e5807fd534b3f3397d7ca8631787c77d23"],"state_sha256":"4f5db3bc57df9b23ea18e7268f45fe625ffabadc691c0c615cd40ac895c784fe"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"jFOpotWsB4BiCCjfR0VghCxG1X6rCBwUyCEW0AyqZunhFIbibAtTPGDNSI4dnjd5LXJKMsaOX9WR3EO6iktZCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T09:12:33.346624Z","bundle_sha256":"2f7ed5f4c8185c0981e9be4cfb60ce89e4ffd4246d83a338ab64f7151d38bd52"}}