{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:MYY6K5MNODLZDCMPAZTOZWRBUD","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":"a507b594cb51dff24e61a60a863c577aed3d09c7cbbe110cdd6973a3cb2413ac","cross_cats_sorted":["cs.DC","cs.PL"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DB","submitted_at":"2013-01-17T19:42:55Z","title_canon_sha256":"847ce132d246548b6263f3598b834888fc70d51ade62af3099b74c4d583d8997"},"schema_version":"1.0","source":{"id":"1301.4200","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1301.4200","created_at":"2026-05-18T03:36:06Z"},{"alias_kind":"arxiv_version","alias_value":"1301.4200v1","created_at":"2026-05-18T03:36:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1301.4200","created_at":"2026-05-18T03:36:06Z"},{"alias_kind":"pith_short_12","alias_value":"MYY6K5MNODLZ","created_at":"2026-05-18T12:27:52Z"},{"alias_kind":"pith_short_16","alias_value":"MYY6K5MNODLZDCMP","created_at":"2026-05-18T12:27:52Z"},{"alias_kind":"pith_short_8","alias_value":"MYY6K5MN","created_at":"2026-05-18T12:27:52Z"}],"graph_snapshots":[{"event_id":"sha256:47f78065db62f41d3b63f049d7f8f193ad6ee7536be2099951613f566c56b6c5","target":"graph","created_at":"2026-05-18T03:36:06Z","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":"In many massively parallel data management platforms, programs are represented as small imperative pieces of code connected in a data flow. This popular abstraction makes it hard to apply algebraic reordering techniques employed by relational DBMSs and other systems that use an algebraic programming abstraction. We present a code analysis technique based on reverse data and control flow analysis that discovers a set of properties from user code, which can be used to emulate algebraic optimizations in this setting.","authors_text":"Aljoscha Krettek, Fabian Hueske, Kostas Tzoumas","cross_cats":["cs.DC","cs.PL"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DB","submitted_at":"2013-01-17T19:42:55Z","title":"Enabling Operator Reordering in Data Flow Programs Through Static Code Analysis"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1301.4200","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":"sha256:0a97c0ad31fc184103b8a9e9e46d7c1b03572b9fa545562e83bf7fdb972f7a7f","target":"record","created_at":"2026-05-18T03:36:06Z","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":"a507b594cb51dff24e61a60a863c577aed3d09c7cbbe110cdd6973a3cb2413ac","cross_cats_sorted":["cs.DC","cs.PL"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DB","submitted_at":"2013-01-17T19:42:55Z","title_canon_sha256":"847ce132d246548b6263f3598b834888fc70d51ade62af3099b74c4d583d8997"},"schema_version":"1.0","source":{"id":"1301.4200","kind":"arxiv","version":1}},"canonical_sha256":"6631e5758d70d791898f0666ecda21a0c9f2d2f8a1b27bb11f4a6a4b6c00d5dc","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6631e5758d70d791898f0666ecda21a0c9f2d2f8a1b27bb11f4a6a4b6c00d5dc","first_computed_at":"2026-05-18T03:36:06.949666Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:36:06.949666Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"iR/i15/Vujx+9GjMblIOmP+iIxvezSoWnMmcYw6EtKGK+3Oxy5c6oUi+8AUVl8taGAqvtjqCZR7GKiHJFA5vDw==","signature_status":"signed_v1","signed_at":"2026-05-18T03:36:06.950522Z","signed_message":"canonical_sha256_bytes"},"source_id":"1301.4200","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0a97c0ad31fc184103b8a9e9e46d7c1b03572b9fa545562e83bf7fdb972f7a7f","sha256:47f78065db62f41d3b63f049d7f8f193ad6ee7536be2099951613f566c56b6c5"],"state_sha256":"3c2f26e73a69e8af7545f878cbbaf5af529209d85601962987261bb3c0185455"}