{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:YXBYBYX4AN67QQM3DLEJ3J7VWJ","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":"fd99bc3b4c68d757b3b29ff28bbffd9388fd3995988cfa8787ab1da06ff2b968","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.PL","submitted_at":"2012-11-15T20:37:01Z","title_canon_sha256":"bbbdd911e66bda59e850fbf007bb4084dd907aa71d71bdce2c3fd7f25a46c503"},"schema_version":"1.0","source":{"id":"1211.3722","kind":"arxiv","version":4}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1211.3722","created_at":"2026-05-18T03:17:44Z"},{"alias_kind":"arxiv_version","alias_value":"1211.3722v4","created_at":"2026-05-18T03:17:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1211.3722","created_at":"2026-05-18T03:17:44Z"},{"alias_kind":"pith_short_12","alias_value":"YXBYBYX4AN67","created_at":"2026-05-18T12:27:30Z"},{"alias_kind":"pith_short_16","alias_value":"YXBYBYX4AN67QQM3","created_at":"2026-05-18T12:27:30Z"},{"alias_kind":"pith_short_8","alias_value":"YXBYBYX4","created_at":"2026-05-18T12:27:30Z"}],"graph_snapshots":[{"event_id":"sha256:10c84bf3feb78d491fef44d76c348ca4981c5932dae53e5da2761b32be5ebe8e","target":"graph","created_at":"2026-05-18T03:17:44Z","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 technique of abstracting abstract machines (AAM) provides a systematic approach for deriving computable approximations of evaluators that are easily proved sound. This article contributes a complementary step-by-step process for subsequently going from a naive analyzer derived under the AAM approach, to an efficient and correct implementation. The end result of the process is a two to three order-of-magnitude improvement over the systematically derived analyzer, making it competitive with hand-optimized implementations that compute fundamentally less precise results.","authors_text":"David Van Horn, J. Ian Johnson, Matthew Might, Nicholas Labich","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.PL","submitted_at":"2012-11-15T20:37:01Z","title":"Optimizing Abstract Abstract Machines"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1211.3722","kind":"arxiv","version":4},"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:e8e4c50d915451eab457cdedbe0156a41bdf291640b6b1da7b2e7c105930eb3c","target":"record","created_at":"2026-05-18T03:17:44Z","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":"fd99bc3b4c68d757b3b29ff28bbffd9388fd3995988cfa8787ab1da06ff2b968","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.PL","submitted_at":"2012-11-15T20:37:01Z","title_canon_sha256":"bbbdd911e66bda59e850fbf007bb4084dd907aa71d71bdce2c3fd7f25a46c503"},"schema_version":"1.0","source":{"id":"1211.3722","kind":"arxiv","version":4}},"canonical_sha256":"c5c380e2fc037df8419b1ac89da7f5b24b7019c5694722a9029e812bec4fd4e8","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c5c380e2fc037df8419b1ac89da7f5b24b7019c5694722a9029e812bec4fd4e8","first_computed_at":"2026-05-18T03:17:44.621891Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:17:44.621891Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"eVRwKz6/ZSTasPgdRs2B8kQj82zw0Jc06HlzuVaYhZ80TvctGpW4czWSLT/M2lvzS3A42bsMUfy/aSoANjvPAw==","signature_status":"signed_v1","signed_at":"2026-05-18T03:17:44.622504Z","signed_message":"canonical_sha256_bytes"},"source_id":"1211.3722","source_kind":"arxiv","source_version":4}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e8e4c50d915451eab457cdedbe0156a41bdf291640b6b1da7b2e7c105930eb3c","sha256:10c84bf3feb78d491fef44d76c348ca4981c5932dae53e5da2761b32be5ebe8e"],"state_sha256":"d35c1c5ebabc20d2612d477757c06b7a5b9eac11ec872749dff0b4f1c00ca566"}