{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:ZRGZTKQFULBWJOP67M2JTOSY4Q","short_pith_number":"pith:ZRGZTKQF","canonical_record":{"source":{"id":"1609.00759","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.AI","submitted_at":"2016-09-02T22:20:05Z","cross_cats_sorted":[],"title_canon_sha256":"35e54a1403a7bdb6743de17b3db188762ff8d279eec1f9f2fb94f8f05ead574f","abstract_canon_sha256":"a68e4527dc9e3e4ada8575071bf600bb59dfcfdd64aed78191fa7102cd5c948d"},"schema_version":"1.0"},"canonical_sha256":"cc4d99aa05a2c364b9fefb3499ba58e4237f38f5ab8562f286be491e0d4d0831","source":{"kind":"arxiv","id":"1609.00759","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1609.00759","created_at":"2026-05-18T01:06:20Z"},{"alias_kind":"arxiv_version","alias_value":"1609.00759v1","created_at":"2026-05-18T01:06:20Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1609.00759","created_at":"2026-05-18T01:06:20Z"},{"alias_kind":"pith_short_12","alias_value":"ZRGZTKQFULBW","created_at":"2026-05-18T12:30:55Z"},{"alias_kind":"pith_short_16","alias_value":"ZRGZTKQFULBWJOP6","created_at":"2026-05-18T12:30:55Z"},{"alias_kind":"pith_short_8","alias_value":"ZRGZTKQF","created_at":"2026-05-18T12:30:55Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:ZRGZTKQFULBWJOP67M2JTOSY4Q","target":"record","payload":{"canonical_record":{"source":{"id":"1609.00759","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.AI","submitted_at":"2016-09-02T22:20:05Z","cross_cats_sorted":[],"title_canon_sha256":"35e54a1403a7bdb6743de17b3db188762ff8d279eec1f9f2fb94f8f05ead574f","abstract_canon_sha256":"a68e4527dc9e3e4ada8575071bf600bb59dfcfdd64aed78191fa7102cd5c948d"},"schema_version":"1.0"},"canonical_sha256":"cc4d99aa05a2c364b9fefb3499ba58e4237f38f5ab8562f286be491e0d4d0831","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:06:20.026737Z","signature_b64":"cqCmywg3TOYOTLsMCpSvpEkytZy4Nu7oXph1LT4YAsseLUy/R0WlwL305iisOqQw6VZgX4YBTK4pNWsX0FSsAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"cc4d99aa05a2c364b9fefb3499ba58e4237f38f5ab8562f286be491e0d4d0831","last_reissued_at":"2026-05-18T01:06:20.026163Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:06:20.026163Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1609.00759","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":"2026-05-18T01:06:20Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+x8ABTEaGBGhb78qY6bKeQHe41B9sfn+aJR0aYfLoscNM8Uk7CQd16ZJcqyPZljBgRfKNjX0Nc0cICkXcQ7dDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-22T13:48:00.330248Z"},"content_sha256":"64fd6b30c39742c2d27174cb2175ae2d4735bc6729fd747fc538b968b11f9e21","schema_version":"1.0","event_id":"sha256:64fd6b30c39742c2d27174cb2175ae2d4735bc6729fd747fc538b968b11f9e21"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:ZRGZTKQFULBWJOP67M2JTOSY4Q","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A MIP Backend for the IDP System","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.AI","authors_text":"Jo Devriendt, Maurice Bruynooghe, Patrick De Causmaecker, San Pham","submitted_at":"2016-09-02T22:20:05Z","abstract_excerpt":"The IDP knowledge base system currently uses MiniSAT(ID) as its backend Constraint Programming (CP) solver. A few similar systems have used a Mixed Integer Programming (MIP) solver as backend. However, so far little is known about when the MIP solver is preferable. This paper explores this question. It describes the use of CPLEX as a backend for IDP and reports on experiments comparing both backends."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1609.00759","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":"2026-05-18T01:06:20Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"fG3K42RP07sm6uFZHBb50Er07b7frijYBz+lmnRBrQnNZA+7Sut/fRsE/ZFvMeqiO+fdOe291dluaCUwqB1IAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-22T13:48:00.330652Z"},"content_sha256":"9d0edaf507f5bf1fa1b1101f8cd859c5b5241a241aed38c25d98702017b95d2a","schema_version":"1.0","event_id":"sha256:9d0edaf507f5bf1fa1b1101f8cd859c5b5241a241aed38c25d98702017b95d2a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ZRGZTKQFULBWJOP67M2JTOSY4Q/bundle.json","state_url":"https://pith.science/pith/ZRGZTKQFULBWJOP67M2JTOSY4Q/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ZRGZTKQFULBWJOP67M2JTOSY4Q/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":"2026-05-22T13:48:00Z","links":{"resolver":"https://pith.science/pith/ZRGZTKQFULBWJOP67M2JTOSY4Q","bundle":"https://pith.science/pith/ZRGZTKQFULBWJOP67M2JTOSY4Q/bundle.json","state":"https://pith.science/pith/ZRGZTKQFULBWJOP67M2JTOSY4Q/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ZRGZTKQFULBWJOP67M2JTOSY4Q/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:ZRGZTKQFULBWJOP67M2JTOSY4Q","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":"a68e4527dc9e3e4ada8575071bf600bb59dfcfdd64aed78191fa7102cd5c948d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.AI","submitted_at":"2016-09-02T22:20:05Z","title_canon_sha256":"35e54a1403a7bdb6743de17b3db188762ff8d279eec1f9f2fb94f8f05ead574f"},"schema_version":"1.0","source":{"id":"1609.00759","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1609.00759","created_at":"2026-05-18T01:06:20Z"},{"alias_kind":"arxiv_version","alias_value":"1609.00759v1","created_at":"2026-05-18T01:06:20Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1609.00759","created_at":"2026-05-18T01:06:20Z"},{"alias_kind":"pith_short_12","alias_value":"ZRGZTKQFULBW","created_at":"2026-05-18T12:30:55Z"},{"alias_kind":"pith_short_16","alias_value":"ZRGZTKQFULBWJOP6","created_at":"2026-05-18T12:30:55Z"},{"alias_kind":"pith_short_8","alias_value":"ZRGZTKQF","created_at":"2026-05-18T12:30:55Z"}],"graph_snapshots":[{"event_id":"sha256:9d0edaf507f5bf1fa1b1101f8cd859c5b5241a241aed38c25d98702017b95d2a","target":"graph","created_at":"2026-05-18T01:06:20Z","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 IDP knowledge base system currently uses MiniSAT(ID) as its backend Constraint Programming (CP) solver. A few similar systems have used a Mixed Integer Programming (MIP) solver as backend. However, so far little is known about when the MIP solver is preferable. This paper explores this question. It describes the use of CPLEX as a backend for IDP and reports on experiments comparing both backends.","authors_text":"Jo Devriendt, Maurice Bruynooghe, Patrick De Causmaecker, San Pham","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.AI","submitted_at":"2016-09-02T22:20:05Z","title":"A MIP Backend for the IDP System"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1609.00759","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":"sha256:64fd6b30c39742c2d27174cb2175ae2d4735bc6729fd747fc538b968b11f9e21","target":"record","created_at":"2026-05-18T01:06:20Z","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":"a68e4527dc9e3e4ada8575071bf600bb59dfcfdd64aed78191fa7102cd5c948d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.AI","submitted_at":"2016-09-02T22:20:05Z","title_canon_sha256":"35e54a1403a7bdb6743de17b3db188762ff8d279eec1f9f2fb94f8f05ead574f"},"schema_version":"1.0","source":{"id":"1609.00759","kind":"arxiv","version":1}},"canonical_sha256":"cc4d99aa05a2c364b9fefb3499ba58e4237f38f5ab8562f286be491e0d4d0831","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"cc4d99aa05a2c364b9fefb3499ba58e4237f38f5ab8562f286be491e0d4d0831","first_computed_at":"2026-05-18T01:06:20.026163Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:06:20.026163Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"cqCmywg3TOYOTLsMCpSvpEkytZy4Nu7oXph1LT4YAsseLUy/R0WlwL305iisOqQw6VZgX4YBTK4pNWsX0FSsAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:06:20.026737Z","signed_message":"canonical_sha256_bytes"},"source_id":"1609.00759","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:64fd6b30c39742c2d27174cb2175ae2d4735bc6729fd747fc538b968b11f9e21","sha256:9d0edaf507f5bf1fa1b1101f8cd859c5b5241a241aed38c25d98702017b95d2a"],"state_sha256":"47be3b264be07dcae1b94430e7182d31bec02009d25f77d6c752d4ade1b75a88"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"rIoGGi37bm+Ky0fc5/XaA/qArXBtHJj9Hfj7i+RNf8Mqsv7T/rIABNa9lwnBA+TdczSmqhZB4vnKK37Sout8AA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-22T13:48:00.333893Z","bundle_sha256":"6c87ff69132295d7484f2b8abb195ce27c7cc82b947ce38ca081113b1543a9ba"}}