{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:AVFVHOB4FAGAHZAPXN5W7HJM3A","short_pith_number":"pith:AVFVHOB4","canonical_record":{"source":{"id":"1405.0876","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.AI","submitted_at":"2014-05-05T12:45:07Z","cross_cats_sorted":[],"title_canon_sha256":"3f8abd156b3c236365f0b4510e2949b81e04dea655d7d8dde9401b69c45d7622","abstract_canon_sha256":"6a518f72ab85bfb449965830ebbfe594498eebc75333219f8aa9b522b1c8e3cb"},"schema_version":"1.0"},"canonical_sha256":"054b53b83c280c03e40fbb7b6f9d2cd8153f2a39f28f7e61155ca2d6f63bd649","source":{"kind":"arxiv","id":"1405.0876","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1405.0876","created_at":"2026-05-18T02:52:40Z"},{"alias_kind":"arxiv_version","alias_value":"1405.0876v1","created_at":"2026-05-18T02:52:40Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1405.0876","created_at":"2026-05-18T02:52:40Z"},{"alias_kind":"pith_short_12","alias_value":"AVFVHOB4FAGA","created_at":"2026-05-18T12:28:19Z"},{"alias_kind":"pith_short_16","alias_value":"AVFVHOB4FAGAHZAP","created_at":"2026-05-18T12:28:19Z"},{"alias_kind":"pith_short_8","alias_value":"AVFVHOB4","created_at":"2026-05-18T12:28:19Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:AVFVHOB4FAGAHZAPXN5W7HJM3A","target":"record","payload":{"canonical_record":{"source":{"id":"1405.0876","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.AI","submitted_at":"2014-05-05T12:45:07Z","cross_cats_sorted":[],"title_canon_sha256":"3f8abd156b3c236365f0b4510e2949b81e04dea655d7d8dde9401b69c45d7622","abstract_canon_sha256":"6a518f72ab85bfb449965830ebbfe594498eebc75333219f8aa9b522b1c8e3cb"},"schema_version":"1.0"},"canonical_sha256":"054b53b83c280c03e40fbb7b6f9d2cd8153f2a39f28f7e61155ca2d6f63bd649","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:52:40.501965Z","signature_b64":"lfMczdvRw+0lcEUs1OQzfC0KGLkodlxToNuL3uQlh5mtIUYjxI+KWVrVBDJReNMqkqrGfjosfVXRgYsFF6itDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"054b53b83c280c03e40fbb7b6f9d2cd8153f2a39f28f7e61155ca2d6f63bd649","last_reissued_at":"2026-05-18T02:52:40.501592Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:52:40.501592Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1405.0876","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":"2026-05-18T02:52:40Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"IokdH2JQSeIIFlHbGOljSVGjP2fK7Mqfk+N0kUbl63LTkjaMOifE33FUNIT7TTVxXClK3M53jI9re850Vi0GCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-09T06:13:34.460941Z"},"content_sha256":"5220a44118d44256bae36d6df9b48c0f4eeb498b992a1103fb2568ff26a450b6","schema_version":"1.0","event_id":"sha256:5220a44118d44256bae36d6df9b48c0f4eeb498b992a1103fb2568ff26a450b6"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:AVFVHOB4FAGAHZAPXN5W7HJM3A","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Multi-engine ASP Solver ME-ASP: Progress Report","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.AI","authors_text":"Francesco Ricca, Luca Pulina, Marco Maratea","submitted_at":"2014-05-05T12:45:07Z","abstract_excerpt":"MEASP is a multi-engine solver for ground ASP programs. It exploits algorithm selection techniques based on classification to select one among a set of out-of-the-box heterogeneous ASP solvers used as black-box engines. In this paper we report on (i) a new optimized implementation of MEASP; and (ii) an attempt of applying algorithm selection to non-ground programs. An experimental analysis reported in the paper shows that (i) the new implementation of \\measp is substantially faster than the previous version; and (ii) the multi-engine recipe can be applied to the evaluation of non-ground progra"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1405.0876","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":"2026-05-18T02:52:40Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"l881wIY6QODX/OKkXjZm2qWsKdFmNCoJIrOX85EWSsFCrY+2E7EA+Ks3ZCXNylPVYuf8MB9tN1CVTP9O/qTwCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-09T06:13:34.461679Z"},"content_sha256":"f0171449660a4b131e4cbfdf16845ba3e5f545c917d1da90ff356558fdd62082","schema_version":"1.0","event_id":"sha256:f0171449660a4b131e4cbfdf16845ba3e5f545c917d1da90ff356558fdd62082"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/AVFVHOB4FAGAHZAPXN5W7HJM3A/bundle.json","state_url":"https://pith.science/pith/AVFVHOB4FAGAHZAPXN5W7HJM3A/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/AVFVHOB4FAGAHZAPXN5W7HJM3A/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":"2026-06-09T06:13:34Z","links":{"resolver":"https://pith.science/pith/AVFVHOB4FAGAHZAPXN5W7HJM3A","bundle":"https://pith.science/pith/AVFVHOB4FAGAHZAPXN5W7HJM3A/bundle.json","state":"https://pith.science/pith/AVFVHOB4FAGAHZAPXN5W7HJM3A/state.json","well_known_bundle":"https://pith.science/.well-known/pith/AVFVHOB4FAGAHZAPXN5W7HJM3A/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:AVFVHOB4FAGAHZAPXN5W7HJM3A","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":"6a518f72ab85bfb449965830ebbfe594498eebc75333219f8aa9b522b1c8e3cb","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.AI","submitted_at":"2014-05-05T12:45:07Z","title_canon_sha256":"3f8abd156b3c236365f0b4510e2949b81e04dea655d7d8dde9401b69c45d7622"},"schema_version":"1.0","source":{"id":"1405.0876","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1405.0876","created_at":"2026-05-18T02:52:40Z"},{"alias_kind":"arxiv_version","alias_value":"1405.0876v1","created_at":"2026-05-18T02:52:40Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1405.0876","created_at":"2026-05-18T02:52:40Z"},{"alias_kind":"pith_short_12","alias_value":"AVFVHOB4FAGA","created_at":"2026-05-18T12:28:19Z"},{"alias_kind":"pith_short_16","alias_value":"AVFVHOB4FAGAHZAP","created_at":"2026-05-18T12:28:19Z"},{"alias_kind":"pith_short_8","alias_value":"AVFVHOB4","created_at":"2026-05-18T12:28:19Z"}],"graph_snapshots":[{"event_id":"sha256:f0171449660a4b131e4cbfdf16845ba3e5f545c917d1da90ff356558fdd62082","target":"graph","created_at":"2026-05-18T02:52:40Z","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":"MEASP is a multi-engine solver for ground ASP programs. It exploits algorithm selection techniques based on classification to select one among a set of out-of-the-box heterogeneous ASP solvers used as black-box engines. In this paper we report on (i) a new optimized implementation of MEASP; and (ii) an attempt of applying algorithm selection to non-ground programs. An experimental analysis reported in the paper shows that (i) the new implementation of \\measp is substantially faster than the previous version; and (ii) the multi-engine recipe can be applied to the evaluation of non-ground progra","authors_text":"Francesco Ricca, Luca Pulina, Marco Maratea","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.AI","submitted_at":"2014-05-05T12:45:07Z","title":"The Multi-engine ASP Solver ME-ASP: Progress Report"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1405.0876","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":"sha256:5220a44118d44256bae36d6df9b48c0f4eeb498b992a1103fb2568ff26a450b6","target":"record","created_at":"2026-05-18T02:52:40Z","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":"6a518f72ab85bfb449965830ebbfe594498eebc75333219f8aa9b522b1c8e3cb","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.AI","submitted_at":"2014-05-05T12:45:07Z","title_canon_sha256":"3f8abd156b3c236365f0b4510e2949b81e04dea655d7d8dde9401b69c45d7622"},"schema_version":"1.0","source":{"id":"1405.0876","kind":"arxiv","version":1}},"canonical_sha256":"054b53b83c280c03e40fbb7b6f9d2cd8153f2a39f28f7e61155ca2d6f63bd649","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"054b53b83c280c03e40fbb7b6f9d2cd8153f2a39f28f7e61155ca2d6f63bd649","first_computed_at":"2026-05-18T02:52:40.501592Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:52:40.501592Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"lfMczdvRw+0lcEUs1OQzfC0KGLkodlxToNuL3uQlh5mtIUYjxI+KWVrVBDJReNMqkqrGfjosfVXRgYsFF6itDg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:52:40.501965Z","signed_message":"canonical_sha256_bytes"},"source_id":"1405.0876","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5220a44118d44256bae36d6df9b48c0f4eeb498b992a1103fb2568ff26a450b6","sha256:f0171449660a4b131e4cbfdf16845ba3e5f545c917d1da90ff356558fdd62082"],"state_sha256":"85cf52c3b61c5b86d720daeba17d2c83eb3bae4bd11f14e2d52216647c83567d"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"pf2Ut3g4BmDzKftHAnbZdnJCy7TQKTDnQUfS0eyejbfXHg/xxn8xsr4QBx3/s9MePNFVuNLDk730WgY7l+xVCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-09T06:13:34.465241Z","bundle_sha256":"91700b47dbf94b876c3195ff964aa3a1acc2d0ec23a9a3dc3fb647b38cd8ee99"}}