{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:CCX34K7622O755QDKRFIVCAR4B","short_pith_number":"pith:CCX34K76","canonical_record":{"source":{"id":"1506.07980","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.NE","submitted_at":"2015-06-26T07:44:38Z","cross_cats_sorted":["cs.MS"],"title_canon_sha256":"ed92404a8d7801ae74e689fb32060f0ad2caade731faa7864e1b003275e3fd74","abstract_canon_sha256":"ab4e10825cb1d833c829491606ca3342ca829cdb5fb1dd9cf58fd51e235d5969"},"schema_version":"1.0"},"canonical_sha256":"10afbe2bfed69dfef603544a8a8811e05985d5f9b3195c5e3564ea4065b4045f","source":{"kind":"arxiv","id":"1506.07980","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1506.07980","created_at":"2026-05-18T01:37:48Z"},{"alias_kind":"arxiv_version","alias_value":"1506.07980v1","created_at":"2026-05-18T01:37:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1506.07980","created_at":"2026-05-18T01:37:48Z"},{"alias_kind":"pith_short_12","alias_value":"CCX34K7622O7","created_at":"2026-05-18T12:29:14Z"},{"alias_kind":"pith_short_16","alias_value":"CCX34K7622O755QD","created_at":"2026-05-18T12:29:14Z"},{"alias_kind":"pith_short_8","alias_value":"CCX34K76","created_at":"2026-05-18T12:29:14Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:CCX34K7622O755QDKRFIVCAR4B","target":"record","payload":{"canonical_record":{"source":{"id":"1506.07980","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.NE","submitted_at":"2015-06-26T07:44:38Z","cross_cats_sorted":["cs.MS"],"title_canon_sha256":"ed92404a8d7801ae74e689fb32060f0ad2caade731faa7864e1b003275e3fd74","abstract_canon_sha256":"ab4e10825cb1d833c829491606ca3342ca829cdb5fb1dd9cf58fd51e235d5969"},"schema_version":"1.0"},"canonical_sha256":"10afbe2bfed69dfef603544a8a8811e05985d5f9b3195c5e3564ea4065b4045f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:37:48.416797Z","signature_b64":"XrOsL12edafExAb1APDZVWzx/nHGxiDLqFOb7BXINLeTYDnlpJpc4E5XUQ+WyFjDWqMZDr3OZ7Lnn35/3UhpCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"10afbe2bfed69dfef603544a8a8811e05985d5f9b3195c5e3564ea4065b4045f","last_reissued_at":"2026-05-18T01:37:48.416147Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:37:48.416147Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1506.07980","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":"2026-05-18T01:37:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"r67LKR+qZpUiv80LRKpSeuFG/8MXkQVkf7miK09t2C0JUWWgp0UyXPNRUM10OC3o2ATcILmzBBbyh6U96B4+BQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-26T12:46:19.852774Z"},"content_sha256":"d7cd9c0d4b6e78978bf366bb1ac158f27d17098ce80f373dad20827683483c81","schema_version":"1.0","event_id":"sha256:d7cd9c0d4b6e78978bf366bb1ac158f27d17098ce80f373dad20827683483c81"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:CCX34K7622O755QDKRFIVCAR4B","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A Java Implementation of the SGA, UMDA, ECGA, and HBOA","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.MS"],"primary_cat":"cs.NE","authors_text":"Fernando G. Lobo, Jos\\'e C. Pereira","submitted_at":"2015-06-26T07:44:38Z","abstract_excerpt":"The Simple Genetic Algorithm, the Univariate Marginal Distribution Algorithm, the Extended Compact Genetic Algorithm, and the Hierarchical Bayesian Optimization Algorithm are all well known Evolutionary Algorithms.\n  In this report we present a Java implementation of these four algorithms with detailed instructions on how to use each of them to solve a given set of optimization problems. Additionally, it is explained how to implement and integrate new problems within the provided set. The source and binary files of the Java implementations are available for free download at https://github.com/"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1506.07980","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":""},"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":"2026-05-18T01:37:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"lPmjSXMX1eB0rxfOGMV4t0CC+PHoQkEskHVQ4pt5w3T3G+vgVHqvYzIyjNG+A4E1g6ejR/vfECXS3DWzFZDYAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-26T12:46:19.853116Z"},"content_sha256":"7c95eb4de726b85bbbf80e69eb47e474c850e4a9b75bfaa07c529d6251c795e8","schema_version":"1.0","event_id":"sha256:7c95eb4de726b85bbbf80e69eb47e474c850e4a9b75bfaa07c529d6251c795e8"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/CCX34K7622O755QDKRFIVCAR4B/bundle.json","state_url":"https://pith.science/pith/CCX34K7622O755QDKRFIVCAR4B/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/CCX34K7622O755QDKRFIVCAR4B/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":"2026-06-26T12:46:19Z","links":{"resolver":"https://pith.science/pith/CCX34K7622O755QDKRFIVCAR4B","bundle":"https://pith.science/pith/CCX34K7622O755QDKRFIVCAR4B/bundle.json","state":"https://pith.science/pith/CCX34K7622O755QDKRFIVCAR4B/state.json","well_known_bundle":"https://pith.science/.well-known/pith/CCX34K7622O755QDKRFIVCAR4B/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:CCX34K7622O755QDKRFIVCAR4B","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":"ab4e10825cb1d833c829491606ca3342ca829cdb5fb1dd9cf58fd51e235d5969","cross_cats_sorted":["cs.MS"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.NE","submitted_at":"2015-06-26T07:44:38Z","title_canon_sha256":"ed92404a8d7801ae74e689fb32060f0ad2caade731faa7864e1b003275e3fd74"},"schema_version":"1.0","source":{"id":"1506.07980","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1506.07980","created_at":"2026-05-18T01:37:48Z"},{"alias_kind":"arxiv_version","alias_value":"1506.07980v1","created_at":"2026-05-18T01:37:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1506.07980","created_at":"2026-05-18T01:37:48Z"},{"alias_kind":"pith_short_12","alias_value":"CCX34K7622O7","created_at":"2026-05-18T12:29:14Z"},{"alias_kind":"pith_short_16","alias_value":"CCX34K7622O755QD","created_at":"2026-05-18T12:29:14Z"},{"alias_kind":"pith_short_8","alias_value":"CCX34K76","created_at":"2026-05-18T12:29:14Z"}],"graph_snapshots":[{"event_id":"sha256:7c95eb4de726b85bbbf80e69eb47e474c850e4a9b75bfaa07c529d6251c795e8","target":"graph","created_at":"2026-05-18T01:37:48Z","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":"The Simple Genetic Algorithm, the Univariate Marginal Distribution Algorithm, the Extended Compact Genetic Algorithm, and the Hierarchical Bayesian Optimization Algorithm are all well known Evolutionary Algorithms.\n  In this report we present a Java implementation of these four algorithms with detailed instructions on how to use each of them to solve a given set of optimization problems. Additionally, it is explained how to implement and integrate new problems within the provided set. The source and binary files of the Java implementations are available for free download at https://github.com/","authors_text":"Fernando G. Lobo, Jos\\'e C. Pereira","cross_cats":["cs.MS"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.NE","submitted_at":"2015-06-26T07:44:38Z","title":"A Java Implementation of the SGA, UMDA, ECGA, and HBOA"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1506.07980","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:d7cd9c0d4b6e78978bf366bb1ac158f27d17098ce80f373dad20827683483c81","target":"record","created_at":"2026-05-18T01:37:48Z","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":"ab4e10825cb1d833c829491606ca3342ca829cdb5fb1dd9cf58fd51e235d5969","cross_cats_sorted":["cs.MS"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.NE","submitted_at":"2015-06-26T07:44:38Z","title_canon_sha256":"ed92404a8d7801ae74e689fb32060f0ad2caade731faa7864e1b003275e3fd74"},"schema_version":"1.0","source":{"id":"1506.07980","kind":"arxiv","version":1}},"canonical_sha256":"10afbe2bfed69dfef603544a8a8811e05985d5f9b3195c5e3564ea4065b4045f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"10afbe2bfed69dfef603544a8a8811e05985d5f9b3195c5e3564ea4065b4045f","first_computed_at":"2026-05-18T01:37:48.416147Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:37:48.416147Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"XrOsL12edafExAb1APDZVWzx/nHGxiDLqFOb7BXINLeTYDnlpJpc4E5XUQ+WyFjDWqMZDr3OZ7Lnn35/3UhpCg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:37:48.416797Z","signed_message":"canonical_sha256_bytes"},"source_id":"1506.07980","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d7cd9c0d4b6e78978bf366bb1ac158f27d17098ce80f373dad20827683483c81","sha256:7c95eb4de726b85bbbf80e69eb47e474c850e4a9b75bfaa07c529d6251c795e8"],"state_sha256":"a4436067e28e71a2dcce5a6d10a0e56aaa6cf51d6dd72c3798096ff31d5e7d0d"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"mAiIIJ+H6z1ESDh8d1MSewKT2xaVfbIzUFfGExoqzzgxWhhhbapr8CrG759qY55wgjg8K9ockGYBhu9BKqSTBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-26T12:46:19.855238Z","bundle_sha256":"aeee0e2773f37d9817421a13b1c5e404264ab81ae9d2e65e86b8cd11db138e25"}}