{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:XFVQCI44NMOVPJC4MJYDA5HECU","short_pith_number":"pith:XFVQCI44","canonical_record":{"source":{"id":"2607.18603","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IR","submitted_at":"2026-07-21T00:32:55Z","cross_cats_sorted":["cs.AI","cs.CL"],"title_canon_sha256":"04d9f92ceededba29ad46f739c28d15ef8bb0ba942317c969b8eda4c0e7d0acf","abstract_canon_sha256":"732371762effe1f0c0201049873584e88738ec11e502a0cce16943bc71e63f82"},"schema_version":"1.0"},"canonical_sha256":"b96b01239c6b1d57a45c62703074e41503db03071d61df43584842a1ce8c67ea","source":{"kind":"arxiv","id":"2607.18603","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2607.18603","created_at":"2026-07-22T00:22:56Z"},{"alias_kind":"arxiv_version","alias_value":"2607.18603v1","created_at":"2026-07-22T00:22:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2607.18603","created_at":"2026-07-22T00:22:56Z"},{"alias_kind":"pith_short_12","alias_value":"XFVQCI44NMOV","created_at":"2026-07-22T00:22:56Z"},{"alias_kind":"pith_short_16","alias_value":"XFVQCI44NMOVPJC4","created_at":"2026-07-22T00:22:56Z"},{"alias_kind":"pith_short_8","alias_value":"XFVQCI44","created_at":"2026-07-22T00:22:56Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:XFVQCI44NMOVPJC4MJYDA5HECU","target":"record","payload":{"canonical_record":{"source":{"id":"2607.18603","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IR","submitted_at":"2026-07-21T00:32:55Z","cross_cats_sorted":["cs.AI","cs.CL"],"title_canon_sha256":"04d9f92ceededba29ad46f739c28d15ef8bb0ba942317c969b8eda4c0e7d0acf","abstract_canon_sha256":"732371762effe1f0c0201049873584e88738ec11e502a0cce16943bc71e63f82"},"schema_version":"1.0"},"canonical_sha256":"b96b01239c6b1d57a45c62703074e41503db03071d61df43584842a1ce8c67ea","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-22T00:22:56.262791Z","signature_b64":"w/y830GD4eeZZ9mqjr/uQNq+R7f+TYshQbQCjIFXGlAqUQViWWt16Tb3d0cWmTUWY/DEnBoH4HgF27e1EUcaBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b96b01239c6b1d57a45c62703074e41503db03071d61df43584842a1ce8c67ea","last_reissued_at":"2026-07-22T00:22:56.262000Z","signature_status":"signed_v1","first_computed_at":"2026-07-22T00:22:56.262000Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2607.18603","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":"2026-07-22T00:22:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"HoSMBiKWN4puiXTd9W0yjRs4XfitAQVf0gE6/7EDnMGWoAxR4IxAl5D/tsGXcEtoE9rBvAsUPulgDIVGSY1KDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T19:02:46.211697Z"},"content_sha256":"858bcbaf64913b2f4c057941f596a3d9303a211efbbf53517504988b9a1f4329","schema_version":"1.0","event_id":"sha256:858bcbaf64913b2f4c057941f596a3d9303a211efbbf53517504988b9a1f4329"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:XFVQCI44NMOVPJC4MJYDA5HECU","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"AutoIndex: Learning Representation Programs for Retrieval","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.AI","cs.CL"],"primary_cat":"cs.IR","authors_text":"Andrew Drozdov, Hanna Jiang, Nithya Rajkumar, Ramya Narayanasamy, Sam O'Nuallain, Shreyas Chaudhari","submitted_at":"2026-07-21T00:32:55Z","abstract_excerpt":"We present AutoIndex, a framework for learning representation programs: executable transformations that map raw documents into the representations exposed to a retrieval system. Rather than tuning retrievers, rerankers, or a small set of preprocessing hyperparameters, AutoIndex searches over programs that slice, enrich, normalize, reweight, or reorganize documents before indexing. At each iteration, AutoIndex performs validation-guided program search, in which agents diagnose failures of the current program and synthesize candidate updates, retaining only updates that improve retrieval quality"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.18603","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2607.18603/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-22T00:22:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kjNrT07KyAn2kwqMrSd2h1h/MzGHHbBidYgDx3u7rs+QjnGU3dDiPe/pbGU2sdn/SlBWgDaEagBDudayULV1Dw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T19:02:46.212217Z"},"content_sha256":"5afe4907ea7c652fd2554b52bb5c23b260a00cf98117084ab61c9d93db5efac0","schema_version":"1.0","event_id":"sha256:5afe4907ea7c652fd2554b52bb5c23b260a00cf98117084ab61c9d93db5efac0"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/XFVQCI44NMOVPJC4MJYDA5HECU/bundle.json","state_url":"https://pith.science/pith/XFVQCI44NMOVPJC4MJYDA5HECU/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/XFVQCI44NMOVPJC4MJYDA5HECU/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":"2026-08-04T19:02:46Z","links":{"resolver":"https://pith.science/pith/XFVQCI44NMOVPJC4MJYDA5HECU","bundle":"https://pith.science/pith/XFVQCI44NMOVPJC4MJYDA5HECU/bundle.json","state":"https://pith.science/pith/XFVQCI44NMOVPJC4MJYDA5HECU/state.json","well_known_bundle":"https://pith.science/.well-known/pith/XFVQCI44NMOVPJC4MJYDA5HECU/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:XFVQCI44NMOVPJC4MJYDA5HECU","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":"732371762effe1f0c0201049873584e88738ec11e502a0cce16943bc71e63f82","cross_cats_sorted":["cs.AI","cs.CL"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IR","submitted_at":"2026-07-21T00:32:55Z","title_canon_sha256":"04d9f92ceededba29ad46f739c28d15ef8bb0ba942317c969b8eda4c0e7d0acf"},"schema_version":"1.0","source":{"id":"2607.18603","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2607.18603","created_at":"2026-07-22T00:22:56Z"},{"alias_kind":"arxiv_version","alias_value":"2607.18603v1","created_at":"2026-07-22T00:22:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2607.18603","created_at":"2026-07-22T00:22:56Z"},{"alias_kind":"pith_short_12","alias_value":"XFVQCI44NMOV","created_at":"2026-07-22T00:22:56Z"},{"alias_kind":"pith_short_16","alias_value":"XFVQCI44NMOVPJC4","created_at":"2026-07-22T00:22:56Z"},{"alias_kind":"pith_short_8","alias_value":"XFVQCI44","created_at":"2026-07-22T00:22:56Z"}],"graph_snapshots":[{"event_id":"sha256:5afe4907ea7c652fd2554b52bb5c23b260a00cf98117084ab61c9d93db5efac0","target":"graph","created_at":"2026-07-22T00:22:56Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2607.18603/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We present AutoIndex, a framework for learning representation programs: executable transformations that map raw documents into the representations exposed to a retrieval system. Rather than tuning retrievers, rerankers, or a small set of preprocessing hyperparameters, AutoIndex searches over programs that slice, enrich, normalize, reweight, or reorganize documents before indexing. At each iteration, AutoIndex performs validation-guided program search, in which agents diagnose failures of the current program and synthesize candidate updates, retaining only updates that improve retrieval quality","authors_text":"Andrew Drozdov, Hanna Jiang, Nithya Rajkumar, Ramya Narayanasamy, Sam O'Nuallain, Shreyas Chaudhari","cross_cats":["cs.AI","cs.CL"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IR","submitted_at":"2026-07-21T00:32:55Z","title":"AutoIndex: Learning Representation Programs for Retrieval"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.18603","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":"sha256:858bcbaf64913b2f4c057941f596a3d9303a211efbbf53517504988b9a1f4329","target":"record","created_at":"2026-07-22T00:22:56Z","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":"732371762effe1f0c0201049873584e88738ec11e502a0cce16943bc71e63f82","cross_cats_sorted":["cs.AI","cs.CL"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IR","submitted_at":"2026-07-21T00:32:55Z","title_canon_sha256":"04d9f92ceededba29ad46f739c28d15ef8bb0ba942317c969b8eda4c0e7d0acf"},"schema_version":"1.0","source":{"id":"2607.18603","kind":"arxiv","version":1}},"canonical_sha256":"b96b01239c6b1d57a45c62703074e41503db03071d61df43584842a1ce8c67ea","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b96b01239c6b1d57a45c62703074e41503db03071d61df43584842a1ce8c67ea","first_computed_at":"2026-07-22T00:22:56.262000Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-22T00:22:56.262000Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"w/y830GD4eeZZ9mqjr/uQNq+R7f+TYshQbQCjIFXGlAqUQViWWt16Tb3d0cWmTUWY/DEnBoH4HgF27e1EUcaBg==","signature_status":"signed_v1","signed_at":"2026-07-22T00:22:56.262791Z","signed_message":"canonical_sha256_bytes"},"source_id":"2607.18603","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:858bcbaf64913b2f4c057941f596a3d9303a211efbbf53517504988b9a1f4329","sha256:5afe4907ea7c652fd2554b52bb5c23b260a00cf98117084ab61c9d93db5efac0"],"state_sha256":"b23e4e94b312837b4f6837fc227c6c02ac0cc02cc3e6ee031ade86773768f1b3"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"JQb1iXfRsI8lWLf9JOohPaPn++CTxC0y+GqcuiecBitrn8HAqAIqwrAsX9CusBJJ/ysiCrBRRBL7vLcfxlTICQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-04T19:02:46.219519Z","bundle_sha256":"2b88cb236d14142df7eebb0eb29d3564e2077535be6457291dea38d95e2b4b78"}}