{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:CXUXNWCIP325BGGHUJ3IJEF5NX","short_pith_number":"pith:CXUXNWCI","canonical_record":{"source":{"id":"1204.4200","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.AI","submitted_at":"2012-04-18T20:30:23Z","cross_cats_sorted":["cs.LG","cs.NE","cs.SY"],"title_canon_sha256":"24de680252f9e1b920d3c4f76765c01ce8b462f302acfae2b159013cea5cced6","abstract_canon_sha256":"c9093bd65f16b927e5f641e4a686872b4de56879c8938409b78829420b35b065"},"schema_version":"1.0"},"canonical_sha256":"15e976d8487ef5d098c7a2768490bd6df45a9baf74c7fca8427fec05b5a29037","source":{"kind":"arxiv","id":"1204.4200","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1204.4200","created_at":"2026-05-18T02:39:54Z"},{"alias_kind":"arxiv_version","alias_value":"1204.4200v2","created_at":"2026-05-18T02:39:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1204.4200","created_at":"2026-05-18T02:39:54Z"},{"alias_kind":"pith_short_12","alias_value":"CXUXNWCIP325","created_at":"2026-05-18T12:27:01Z"},{"alias_kind":"pith_short_16","alias_value":"CXUXNWCIP325BGGH","created_at":"2026-05-18T12:27:01Z"},{"alias_kind":"pith_short_8","alias_value":"CXUXNWCI","created_at":"2026-05-18T12:27:01Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:CXUXNWCIP325BGGHUJ3IJEF5NX","target":"record","payload":{"canonical_record":{"source":{"id":"1204.4200","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.AI","submitted_at":"2012-04-18T20:30:23Z","cross_cats_sorted":["cs.LG","cs.NE","cs.SY"],"title_canon_sha256":"24de680252f9e1b920d3c4f76765c01ce8b462f302acfae2b159013cea5cced6","abstract_canon_sha256":"c9093bd65f16b927e5f641e4a686872b4de56879c8938409b78829420b35b065"},"schema_version":"1.0"},"canonical_sha256":"15e976d8487ef5d098c7a2768490bd6df45a9baf74c7fca8427fec05b5a29037","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:39:54.430330Z","signature_b64":"hw3dwP1z0BcaB2doVKnzdgn1UvcwvAhuWlprlLuew9DaLJzpBJdizyWT9X0QBVomtmbk3riheqhPbOe13NyEDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"15e976d8487ef5d098c7a2768490bd6df45a9baf74c7fca8427fec05b5a29037","last_reissued_at":"2026-05-18T02:39:54.429874Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:39:54.429874Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1204.4200","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":"2026-05-18T02:39:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"DwYwWc4Mv4OVNXqridnBFMZx24DlS0ZuSGvHdQU5Os0VnIxSgkpLwow8e5TS0zPWprr3vKWFssuchuyONRJ+AQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T01:23:43.496721Z"},"content_sha256":"6ca7771448d971c4d6d68a9807cb79d54e12d920c6c56916f201cc0e9970d838","schema_version":"1.0","event_id":"sha256:6ca7771448d971c4d6d68a9807cb79d54e12d920c6c56916f201cc0e9970d838"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:CXUXNWCIP325BGGHUJ3IJEF5NX","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Discrete Dynamical Genetic Programming in XCS","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.LG","cs.NE","cs.SY"],"primary_cat":"cs.AI","authors_text":"Larry Bull, Richard J. Preen","submitted_at":"2012-04-18T20:30:23Z","abstract_excerpt":"A number of representation schemes have been presented for use within Learning Classifier Systems, ranging from binary encodings to neural networks. This paper presents results from an investigation into using a discrete dynamical system representation within the XCS Learning Classifier System. In particular, asynchronous random Boolean networks are used to represent the traditional condition-action production system rules. It is shown possible to use self-adaptive, open-ended evolution to design an ensemble of such discrete dynamical systems within XCS to solve a number of well-known test pro"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1204.4200","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":""},"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":"2026-05-18T02:39:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"S5ajQfakLFARr05dPyY1EElMMMzE00wtj+O7j+l4/nBuKYDqOnkYykK70rKXE7nbFlp+jQcXKawxZKZmkexXAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T01:23:43.497068Z"},"content_sha256":"4ab8fe340cd89a7e0ff11a05306cf0a7a96c16987d1dbad87adf254dd6f56c36","schema_version":"1.0","event_id":"sha256:4ab8fe340cd89a7e0ff11a05306cf0a7a96c16987d1dbad87adf254dd6f56c36"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/CXUXNWCIP325BGGHUJ3IJEF5NX/bundle.json","state_url":"https://pith.science/pith/CXUXNWCIP325BGGHUJ3IJEF5NX/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/CXUXNWCIP325BGGHUJ3IJEF5NX/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":"2026-06-02T01:23:43Z","links":{"resolver":"https://pith.science/pith/CXUXNWCIP325BGGHUJ3IJEF5NX","bundle":"https://pith.science/pith/CXUXNWCIP325BGGHUJ3IJEF5NX/bundle.json","state":"https://pith.science/pith/CXUXNWCIP325BGGHUJ3IJEF5NX/state.json","well_known_bundle":"https://pith.science/.well-known/pith/CXUXNWCIP325BGGHUJ3IJEF5NX/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:CXUXNWCIP325BGGHUJ3IJEF5NX","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":"c9093bd65f16b927e5f641e4a686872b4de56879c8938409b78829420b35b065","cross_cats_sorted":["cs.LG","cs.NE","cs.SY"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.AI","submitted_at":"2012-04-18T20:30:23Z","title_canon_sha256":"24de680252f9e1b920d3c4f76765c01ce8b462f302acfae2b159013cea5cced6"},"schema_version":"1.0","source":{"id":"1204.4200","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1204.4200","created_at":"2026-05-18T02:39:54Z"},{"alias_kind":"arxiv_version","alias_value":"1204.4200v2","created_at":"2026-05-18T02:39:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1204.4200","created_at":"2026-05-18T02:39:54Z"},{"alias_kind":"pith_short_12","alias_value":"CXUXNWCIP325","created_at":"2026-05-18T12:27:01Z"},{"alias_kind":"pith_short_16","alias_value":"CXUXNWCIP325BGGH","created_at":"2026-05-18T12:27:01Z"},{"alias_kind":"pith_short_8","alias_value":"CXUXNWCI","created_at":"2026-05-18T12:27:01Z"}],"graph_snapshots":[{"event_id":"sha256:4ab8fe340cd89a7e0ff11a05306cf0a7a96c16987d1dbad87adf254dd6f56c36","target":"graph","created_at":"2026-05-18T02:39:54Z","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":"A number of representation schemes have been presented for use within Learning Classifier Systems, ranging from binary encodings to neural networks. This paper presents results from an investigation into using a discrete dynamical system representation within the XCS Learning Classifier System. In particular, asynchronous random Boolean networks are used to represent the traditional condition-action production system rules. It is shown possible to use self-adaptive, open-ended evolution to design an ensemble of such discrete dynamical systems within XCS to solve a number of well-known test pro","authors_text":"Larry Bull, Richard J. Preen","cross_cats":["cs.LG","cs.NE","cs.SY"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.AI","submitted_at":"2012-04-18T20:30:23Z","title":"Discrete Dynamical Genetic Programming in XCS"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1204.4200","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":"sha256:6ca7771448d971c4d6d68a9807cb79d54e12d920c6c56916f201cc0e9970d838","target":"record","created_at":"2026-05-18T02:39:54Z","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":"c9093bd65f16b927e5f641e4a686872b4de56879c8938409b78829420b35b065","cross_cats_sorted":["cs.LG","cs.NE","cs.SY"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.AI","submitted_at":"2012-04-18T20:30:23Z","title_canon_sha256":"24de680252f9e1b920d3c4f76765c01ce8b462f302acfae2b159013cea5cced6"},"schema_version":"1.0","source":{"id":"1204.4200","kind":"arxiv","version":2}},"canonical_sha256":"15e976d8487ef5d098c7a2768490bd6df45a9baf74c7fca8427fec05b5a29037","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"15e976d8487ef5d098c7a2768490bd6df45a9baf74c7fca8427fec05b5a29037","first_computed_at":"2026-05-18T02:39:54.429874Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:39:54.429874Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"hw3dwP1z0BcaB2doVKnzdgn1UvcwvAhuWlprlLuew9DaLJzpBJdizyWT9X0QBVomtmbk3riheqhPbOe13NyEDA==","signature_status":"signed_v1","signed_at":"2026-05-18T02:39:54.430330Z","signed_message":"canonical_sha256_bytes"},"source_id":"1204.4200","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6ca7771448d971c4d6d68a9807cb79d54e12d920c6c56916f201cc0e9970d838","sha256:4ab8fe340cd89a7e0ff11a05306cf0a7a96c16987d1dbad87adf254dd6f56c36"],"state_sha256":"129ccfc56b82d406841e7f2dd8a6256071d39eaf0b8dc12999e699a52d8a09cf"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"jg1baT8Ca02WWmrDAaupyCAHvyxaaiNxyUm93zm0NUkiPBXYwn/Zl4ltNZ03Rp3kVpwcHnAv+BxSHcqR5ON5Dw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T01:23:43.498983Z","bundle_sha256":"f59c4ef94a938863cdaf5d3a0ac4b6a921aee3b0de8aaf315e5cebea4deb89ff"}}