{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2022:QLTTVF6EIOQJUTQFDVKIV3ZG3V","short_pith_number":"pith:QLTTVF6E","canonical_record":{"source":{"id":"2209.05861","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2022-09-13T10:19:23Z","cross_cats_sorted":["cs.IR"],"title_canon_sha256":"609360c7976a55629a212339b3215d259ab103081d9ca6857cc2a67b4eadeab8","abstract_canon_sha256":"ccf8e3ff0558629d11eaa75bde70b6aa6a8eac33a6291ec476745f124207b7db"},"schema_version":"1.0"},"canonical_sha256":"82e73a97c443a09a4e051d548aef26dd58011df0157b7931de4ce7565e3245b2","source":{"kind":"arxiv","id":"2209.05861","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2209.05861","created_at":"2026-07-05T06:17:01Z"},{"alias_kind":"arxiv_version","alias_value":"2209.05861v2","created_at":"2026-07-05T06:17:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2209.05861","created_at":"2026-07-05T06:17:01Z"},{"alias_kind":"pith_short_12","alias_value":"QLTTVF6EIOQJ","created_at":"2026-07-05T06:17:01Z"},{"alias_kind":"pith_short_16","alias_value":"QLTTVF6EIOQJUTQF","created_at":"2026-07-05T06:17:01Z"},{"alias_kind":"pith_short_8","alias_value":"QLTTVF6E","created_at":"2026-07-05T06:17:01Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2022:QLTTVF6EIOQJUTQFDVKIV3ZG3V","target":"record","payload":{"canonical_record":{"source":{"id":"2209.05861","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2022-09-13T10:19:23Z","cross_cats_sorted":["cs.IR"],"title_canon_sha256":"609360c7976a55629a212339b3215d259ab103081d9ca6857cc2a67b4eadeab8","abstract_canon_sha256":"ccf8e3ff0558629d11eaa75bde70b6aa6a8eac33a6291ec476745f124207b7db"},"schema_version":"1.0"},"canonical_sha256":"82e73a97c443a09a4e051d548aef26dd58011df0157b7931de4ce7565e3245b2","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T06:17:01.415601Z","signature_b64":"GvwO/q3uXJ79wg1Hz0k2NcYKoXn51PZa3OJ0O1r+tfoKio3HMVSbskwCi7msQReZzcOidaYp8sqseBhxaydCDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"82e73a97c443a09a4e051d548aef26dd58011df0157b7931de4ce7565e3245b2","last_reissued_at":"2026-07-05T06:17:01.415131Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T06:17:01.415131Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2209.05861","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T06:17:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KIX4F6eQM7i2rotdgORpnIeygjnho9gSbP2EJUXTbIcceTg5zw58cDC+VurFWTrSqxMcnZubdPNj9ObJWcUlBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-09T05:21:36.566475Z"},"content_sha256":"c23ee3b816c668d75eaa81eac06eaf64c671a16f6d61fc9f6634b2674cbfd003","schema_version":"1.0","event_id":"sha256:c23ee3b816c668d75eaa81eac06eaf64c671a16f6d61fc9f6634b2674cbfd003"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2022:QLTTVF6EIOQJUTQFDVKIV3ZG3V","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Unified Generative & Dense Retrieval for Query Rewriting in Sponsored Search","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.IR"],"primary_cat":"cs.CL","authors_text":"Akash Kumar Mohankumar, Amit Singh, Bhargav Dodla, Gururaj K","submitted_at":"2022-09-13T10:19:23Z","abstract_excerpt":"Sponsored search is a key revenue source for search engines, where advertisers bid on keywords to target users or search queries of interest. However, finding relevant keywords for a given query is challenging due to the large and dynamic keyword space, ambiguous user/advertiser intents, and diverse possible topics and languages. In this work, we present a comprehensive comparison between two paradigms for online query rewriting: Generative (NLG) and Dense Retrieval (DR) methods. We observe that both methods offer complementary benefits that are additive. As a result, we show that around 40% o"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2209.05861","kind":"arxiv","version":2},"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/2209.05861/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":"2026-07-05T06:17:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"xukTfvHJ53gNRfPpuzqQ2Fp3eP1QK99ck4MsfPElJLePIz8R8pXABq4CMjUur8NTUX3R5dhZFAuTdInoD13PCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-09T05:21:36.566874Z"},"content_sha256":"69c37a63eed3719240bec2d2780d462b711b3cd5b4173332a05895d9171654d7","schema_version":"1.0","event_id":"sha256:69c37a63eed3719240bec2d2780d462b711b3cd5b4173332a05895d9171654d7"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/QLTTVF6EIOQJUTQFDVKIV3ZG3V/bundle.json","state_url":"https://pith.science/pith/QLTTVF6EIOQJUTQFDVKIV3ZG3V/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/QLTTVF6EIOQJUTQFDVKIV3ZG3V/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":"2026-07-09T05:21:36Z","links":{"resolver":"https://pith.science/pith/QLTTVF6EIOQJUTQFDVKIV3ZG3V","bundle":"https://pith.science/pith/QLTTVF6EIOQJUTQFDVKIV3ZG3V/bundle.json","state":"https://pith.science/pith/QLTTVF6EIOQJUTQFDVKIV3ZG3V/state.json","well_known_bundle":"https://pith.science/.well-known/pith/QLTTVF6EIOQJUTQFDVKIV3ZG3V/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:QLTTVF6EIOQJUTQFDVKIV3ZG3V","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":"ccf8e3ff0558629d11eaa75bde70b6aa6a8eac33a6291ec476745f124207b7db","cross_cats_sorted":["cs.IR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2022-09-13T10:19:23Z","title_canon_sha256":"609360c7976a55629a212339b3215d259ab103081d9ca6857cc2a67b4eadeab8"},"schema_version":"1.0","source":{"id":"2209.05861","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2209.05861","created_at":"2026-07-05T06:17:01Z"},{"alias_kind":"arxiv_version","alias_value":"2209.05861v2","created_at":"2026-07-05T06:17:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2209.05861","created_at":"2026-07-05T06:17:01Z"},{"alias_kind":"pith_short_12","alias_value":"QLTTVF6EIOQJ","created_at":"2026-07-05T06:17:01Z"},{"alias_kind":"pith_short_16","alias_value":"QLTTVF6EIOQJUTQF","created_at":"2026-07-05T06:17:01Z"},{"alias_kind":"pith_short_8","alias_value":"QLTTVF6E","created_at":"2026-07-05T06:17:01Z"}],"graph_snapshots":[{"event_id":"sha256:69c37a63eed3719240bec2d2780d462b711b3cd5b4173332a05895d9171654d7","target":"graph","created_at":"2026-07-05T06:17:01Z","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/2209.05861/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Sponsored search is a key revenue source for search engines, where advertisers bid on keywords to target users or search queries of interest. However, finding relevant keywords for a given query is challenging due to the large and dynamic keyword space, ambiguous user/advertiser intents, and diverse possible topics and languages. In this work, we present a comprehensive comparison between two paradigms for online query rewriting: Generative (NLG) and Dense Retrieval (DR) methods. We observe that both methods offer complementary benefits that are additive. As a result, we show that around 40% o","authors_text":"Akash Kumar Mohankumar, Amit Singh, Bhargav Dodla, Gururaj K","cross_cats":["cs.IR"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2022-09-13T10:19:23Z","title":"Unified Generative & Dense Retrieval for Query Rewriting in Sponsored Search"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2209.05861","kind":"arxiv","version":2},"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:c23ee3b816c668d75eaa81eac06eaf64c671a16f6d61fc9f6634b2674cbfd003","target":"record","created_at":"2026-07-05T06:17:01Z","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":"ccf8e3ff0558629d11eaa75bde70b6aa6a8eac33a6291ec476745f124207b7db","cross_cats_sorted":["cs.IR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2022-09-13T10:19:23Z","title_canon_sha256":"609360c7976a55629a212339b3215d259ab103081d9ca6857cc2a67b4eadeab8"},"schema_version":"1.0","source":{"id":"2209.05861","kind":"arxiv","version":2}},"canonical_sha256":"82e73a97c443a09a4e051d548aef26dd58011df0157b7931de4ce7565e3245b2","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"82e73a97c443a09a4e051d548aef26dd58011df0157b7931de4ce7565e3245b2","first_computed_at":"2026-07-05T06:17:01.415131Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T06:17:01.415131Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"GvwO/q3uXJ79wg1Hz0k2NcYKoXn51PZa3OJ0O1r+tfoKio3HMVSbskwCi7msQReZzcOidaYp8sqseBhxaydCDA==","signature_status":"signed_v1","signed_at":"2026-07-05T06:17:01.415601Z","signed_message":"canonical_sha256_bytes"},"source_id":"2209.05861","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c23ee3b816c668d75eaa81eac06eaf64c671a16f6d61fc9f6634b2674cbfd003","sha256:69c37a63eed3719240bec2d2780d462b711b3cd5b4173332a05895d9171654d7"],"state_sha256":"7a237765a6a557d2bb0cc20d1a811ddad738b6accbb765a6d04cf4712e51c8f2"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"zlFa5nqX/0rTh3Ff51g2KrTowTvoorSusnguxeAddBnu2JclJkXotXLq5XuQmQM7hCjAbwb5cfsycTbBGMdcAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-09T05:21:36.569857Z","bundle_sha256":"07e22b6352822281a4508c2cee9b952f727d1b4b8852d63b6eed06c43b1091f4"}}