{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:1994:MNDPKYTNHLKIYTO45YZZA4BU6M","short_pith_number":"pith:MNDPKYTN","canonical_record":{"source":{"id":"hep-ph/9405257","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"hep-ph","submitted_at":"1994-05-10T10:47:07Z","cross_cats_sorted":[],"title_canon_sha256":"d1347c3a9cb0e4add1bfe41106af9ddc684127a54481d3583b781f13c0ea5113","abstract_canon_sha256":"b24d2359c422d9e4428620ba4db6ed0028f08e61a851aff7598d2151f34d4c6b"},"schema_version":"1.0"},"canonical_sha256":"6346f5626d3ad48c4ddcee33907034f33344a42894b8e95a597459e45a8bc997","source":{"kind":"arxiv","id":"hep-ph/9405257","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"hep-ph/9405257","created_at":"2026-07-04T15:57:25Z"},{"alias_kind":"arxiv_version","alias_value":"hep-ph/9405257v2","created_at":"2026-07-04T15:57:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.hep-ph/9405257","created_at":"2026-07-04T15:57:25Z"},{"alias_kind":"pith_short_12","alias_value":"MNDPKYTNHLKI","created_at":"2026-07-04T15:57:25Z"},{"alias_kind":"pith_short_16","alias_value":"MNDPKYTNHLKIYTO4","created_at":"2026-07-04T15:57:25Z"},{"alias_kind":"pith_short_8","alias_value":"MNDPKYTN","created_at":"2026-07-04T15:57:25Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:1994:MNDPKYTNHLKIYTO45YZZA4BU6M","target":"record","payload":{"canonical_record":{"source":{"id":"hep-ph/9405257","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"hep-ph","submitted_at":"1994-05-10T10:47:07Z","cross_cats_sorted":[],"title_canon_sha256":"d1347c3a9cb0e4add1bfe41106af9ddc684127a54481d3583b781f13c0ea5113","abstract_canon_sha256":"b24d2359c422d9e4428620ba4db6ed0028f08e61a851aff7598d2151f34d4c6b"},"schema_version":"1.0"},"canonical_sha256":"6346f5626d3ad48c4ddcee33907034f33344a42894b8e95a597459e45a8bc997","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T15:57:25.379603Z","signature_b64":"bttgnwGIsUAVGvQcHKn41xbOnVSrPUsgDRoORrbrjyITpenIOYTZlzd0fMR7AABr9w5LLFhF3j7fIR5YAUEdCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6346f5626d3ad48c4ddcee33907034f33344a42894b8e95a597459e45a8bc997","last_reissued_at":"2026-07-04T15:57:25.379215Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T15:57:25.379215Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"hep-ph/9405257","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-04T15:57:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"sI97qj10tYzu0hezcWMcso0eT2VHGa1GdNtZ8j1jHAsYQwMRP/E1tbHVrj3kujfoJCdiShzPxOYrDTIYPtyVBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T16:27:01.051223Z"},"content_sha256":"60b09e0d42834a517a24f330d74c0b785660c6a2432326e635ecd601849026aa","schema_version":"1.0","event_id":"sha256:60b09e0d42834a517a24f330d74c0b785660c6a2432326e635ecd601849026aa"},{"event_type":"graph_snapshot","subject_pith_number":"pith:1994:MNDPKYTNHLKIYTO45YZZA4BU6M","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Weight optimization in multichannel Monte Carlo","license":"","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"R.Kleiss, R.Pittau","submitted_at":"1994-05-10T10:47:07Z","abstract_excerpt":"We discuss the improvement in the accuracy of a Monte Carlo integration that can be obtained by optimization of the `a-priori weights' of the various channels. These channels may be either the strata in a stratified-sampling approach, or the several `approximate' distributions such as are used in event generators for particle phenomenology. The optimization algorithm does not require any initialization, and each Monte Carlo integration point can be used in the evaluation of the integral. We describe our experience with this method in a realistic problem, where an effective increase in program "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ph/9405257","kind":"arxiv","version":2},"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/hep-ph/9405257/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":"2026-07-04T15:57:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"RmrnfV+aw69I20g66Jo6fR+Mon4IMgq5b34PwPOflY21+FcVxyVd08qr+RhNOx7NV76bUGn9zWydZops9UMCAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T16:27:01.052140Z"},"content_sha256":"1a70cc737231d557886d001d13905c30a8cab138322363c3ea45758d5a7d78fd","schema_version":"1.0","event_id":"sha256:1a70cc737231d557886d001d13905c30a8cab138322363c3ea45758d5a7d78fd"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/MNDPKYTNHLKIYTO45YZZA4BU6M/bundle.json","state_url":"https://pith.science/pith/MNDPKYTNHLKIYTO45YZZA4BU6M/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/MNDPKYTNHLKIYTO45YZZA4BU6M/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":"2026-08-03T16:27:01Z","links":{"resolver":"https://pith.science/pith/MNDPKYTNHLKIYTO45YZZA4BU6M","bundle":"https://pith.science/pith/MNDPKYTNHLKIYTO45YZZA4BU6M/bundle.json","state":"https://pith.science/pith/MNDPKYTNHLKIYTO45YZZA4BU6M/state.json","well_known_bundle":"https://pith.science/.well-known/pith/MNDPKYTNHLKIYTO45YZZA4BU6M/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:1994:MNDPKYTNHLKIYTO45YZZA4BU6M","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":"b24d2359c422d9e4428620ba4db6ed0028f08e61a851aff7598d2151f34d4c6b","cross_cats_sorted":[],"license":"","primary_cat":"hep-ph","submitted_at":"1994-05-10T10:47:07Z","title_canon_sha256":"d1347c3a9cb0e4add1bfe41106af9ddc684127a54481d3583b781f13c0ea5113"},"schema_version":"1.0","source":{"id":"hep-ph/9405257","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"hep-ph/9405257","created_at":"2026-07-04T15:57:25Z"},{"alias_kind":"arxiv_version","alias_value":"hep-ph/9405257v2","created_at":"2026-07-04T15:57:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.hep-ph/9405257","created_at":"2026-07-04T15:57:25Z"},{"alias_kind":"pith_short_12","alias_value":"MNDPKYTNHLKI","created_at":"2026-07-04T15:57:25Z"},{"alias_kind":"pith_short_16","alias_value":"MNDPKYTNHLKIYTO4","created_at":"2026-07-04T15:57:25Z"},{"alias_kind":"pith_short_8","alias_value":"MNDPKYTN","created_at":"2026-07-04T15:57:25Z"}],"graph_snapshots":[{"event_id":"sha256:1a70cc737231d557886d001d13905c30a8cab138322363c3ea45758d5a7d78fd","target":"graph","created_at":"2026-07-04T15:57:25Z","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/hep-ph/9405257/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We discuss the improvement in the accuracy of a Monte Carlo integration that can be obtained by optimization of the `a-priori weights' of the various channels. These channels may be either the strata in a stratified-sampling approach, or the several `approximate' distributions such as are used in event generators for particle phenomenology. The optimization algorithm does not require any initialization, and each Monte Carlo integration point can be used in the evaluation of the integral. We describe our experience with this method in a realistic problem, where an effective increase in program ","authors_text":"R.Kleiss, R.Pittau","cross_cats":[],"headline":"","license":"","primary_cat":"hep-ph","submitted_at":"1994-05-10T10:47:07Z","title":"Weight optimization in multichannel Monte Carlo"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ph/9405257","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":"sha256:60b09e0d42834a517a24f330d74c0b785660c6a2432326e635ecd601849026aa","target":"record","created_at":"2026-07-04T15:57:25Z","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":"b24d2359c422d9e4428620ba4db6ed0028f08e61a851aff7598d2151f34d4c6b","cross_cats_sorted":[],"license":"","primary_cat":"hep-ph","submitted_at":"1994-05-10T10:47:07Z","title_canon_sha256":"d1347c3a9cb0e4add1bfe41106af9ddc684127a54481d3583b781f13c0ea5113"},"schema_version":"1.0","source":{"id":"hep-ph/9405257","kind":"arxiv","version":2}},"canonical_sha256":"6346f5626d3ad48c4ddcee33907034f33344a42894b8e95a597459e45a8bc997","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6346f5626d3ad48c4ddcee33907034f33344a42894b8e95a597459e45a8bc997","first_computed_at":"2026-07-04T15:57:25.379215Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T15:57:25.379215Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"bttgnwGIsUAVGvQcHKn41xbOnVSrPUsgDRoORrbrjyITpenIOYTZlzd0fMR7AABr9w5LLFhF3j7fIR5YAUEdCQ==","signature_status":"signed_v1","signed_at":"2026-07-04T15:57:25.379603Z","signed_message":"canonical_sha256_bytes"},"source_id":"hep-ph/9405257","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:60b09e0d42834a517a24f330d74c0b785660c6a2432326e635ecd601849026aa","sha256:1a70cc737231d557886d001d13905c30a8cab138322363c3ea45758d5a7d78fd"],"state_sha256":"6d991e8f7d90b51718ca6035bb7fe4d70c1d918a33729c5d8448efc87bf196f6"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Iu6SGNeXawekEMTcZdkjkzZ3j1qqkOS4IE3/098JDijYBxj7nd21p91wKU36Bg7KmX/SKMt/bI6tGIMS2znKBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-03T16:27:01.057027Z","bundle_sha256":"7cbcb2470087e8d61c32dd2decc3c21610fed52882d44d3fee0e754462fef86c"}}