{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2024:56WW3SBUYZ2FVYRCXEEIBU5JUF","short_pith_number":"pith:56WW3SBU","canonical_record":{"source":{"id":"2412.01127","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IR","submitted_at":"2024-12-02T05:03:56Z","cross_cats_sorted":[],"title_canon_sha256":"e6636af9e4ceaf5224bf7473c80b80de7286588b4b43871fb3c8f2d466ebf417","abstract_canon_sha256":"6897cf92ee098f0dc142c75a938c485796a418b26b1acce8840d5acb57837380"},"schema_version":"1.0"},"canonical_sha256":"efad6dc834c6745ae222b90880d3a9a164a6eeff09bab0ae005f92610ff04ba1","source":{"kind":"arxiv","id":"2412.01127","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2412.01127","created_at":"2026-07-05T09:42:54Z"},{"alias_kind":"arxiv_version","alias_value":"2412.01127v1","created_at":"2026-07-05T09:42:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2412.01127","created_at":"2026-07-05T09:42:54Z"},{"alias_kind":"pith_short_12","alias_value":"56WW3SBUYZ2F","created_at":"2026-07-05T09:42:54Z"},{"alias_kind":"pith_short_16","alias_value":"56WW3SBUYZ2FVYRC","created_at":"2026-07-05T09:42:54Z"},{"alias_kind":"pith_short_8","alias_value":"56WW3SBU","created_at":"2026-07-05T09:42:54Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2024:56WW3SBUYZ2FVYRCXEEIBU5JUF","target":"record","payload":{"canonical_record":{"source":{"id":"2412.01127","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IR","submitted_at":"2024-12-02T05:03:56Z","cross_cats_sorted":[],"title_canon_sha256":"e6636af9e4ceaf5224bf7473c80b80de7286588b4b43871fb3c8f2d466ebf417","abstract_canon_sha256":"6897cf92ee098f0dc142c75a938c485796a418b26b1acce8840d5acb57837380"},"schema_version":"1.0"},"canonical_sha256":"efad6dc834c6745ae222b90880d3a9a164a6eeff09bab0ae005f92610ff04ba1","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T09:42:54.446521Z","signature_b64":"zcd1YasqSSLtNSnc2UNpUp+BA+zwQH4qYSkDQ/wlamar/+6G8XnSkhosEyr7QkdLeCputLQAQlzvRull3zGSCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"efad6dc834c6745ae222b90880d3a9a164a6eeff09bab0ae005f92610ff04ba1","last_reissued_at":"2026-07-05T09:42:54.445982Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T09:42:54.445982Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2412.01127","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":"2026-07-05T09:42:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"znhrHKIwj4zthLIq43bvA+rGOJAxH7FfTOqDJtqvwusTSZpvGmFFGMuInXTFgKU0eVNUCMKYPc6/U+8LeytlDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-24T00:27:14.478925Z"},"content_sha256":"7bc210e5c30eb32f15f3e9bf8f4d89c7e22cabb514515275e359f7c5dd24026e","schema_version":"1.0","event_id":"sha256:7bc210e5c30eb32f15f3e9bf8f4d89c7e22cabb514515275e359f7c5dd24026e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2024:56WW3SBUYZ2FVYRCXEEIBU5JUF","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Precision Profile Pollution Attack on Sequential Recommenders via Influence Function","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.IR","authors_text":"Jinhui Tang, Xiaoyu Du, Yang Zhang, Yingying Chen","submitted_at":"2024-12-02T05:03:56Z","abstract_excerpt":"Sequential recommendation approaches have demonstrated remarkable proficiency in modeling user preferences. Nevertheless, they are susceptible to profile pollution attacks (PPA), wherein items are introduced into a user's interaction history deliberately to influence the recommendation list. Since retraining the model for each polluted item is time-consuming, recent PPAs estimate item influence based on gradient directions to identify the most effective attack candidates. However, the actual item representations diverge significantly from the gradients, resulting in disparate outcomes.To tackl"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2412.01127","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/2412.01127/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":"2026-07-05T09:42:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"sR+UyxWqKBSo4S7PqZ9GqFUTxVRMVikcoIafhtTQJCmNwzeavV2gUrpkFA05By/ANtsynB4ukXg/y/vVzeQVBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-24T00:27:14.479425Z"},"content_sha256":"2b2af285b135c3acfab94719563a67e7f851a731614d9560ba0a5251f39b86e0","schema_version":"1.0","event_id":"sha256:2b2af285b135c3acfab94719563a67e7f851a731614d9560ba0a5251f39b86e0"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/56WW3SBUYZ2FVYRCXEEIBU5JUF/bundle.json","state_url":"https://pith.science/pith/56WW3SBUYZ2FVYRCXEEIBU5JUF/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/56WW3SBUYZ2FVYRCXEEIBU5JUF/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":"2026-08-24T00:27:14Z","links":{"resolver":"https://pith.science/pith/56WW3SBUYZ2FVYRCXEEIBU5JUF","bundle":"https://pith.science/pith/56WW3SBUYZ2FVYRCXEEIBU5JUF/bundle.json","state":"https://pith.science/pith/56WW3SBUYZ2FVYRCXEEIBU5JUF/state.json","well_known_bundle":"https://pith.science/.well-known/pith/56WW3SBUYZ2FVYRCXEEIBU5JUF/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:56WW3SBUYZ2FVYRCXEEIBU5JUF","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":"6897cf92ee098f0dc142c75a938c485796a418b26b1acce8840d5acb57837380","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IR","submitted_at":"2024-12-02T05:03:56Z","title_canon_sha256":"e6636af9e4ceaf5224bf7473c80b80de7286588b4b43871fb3c8f2d466ebf417"},"schema_version":"1.0","source":{"id":"2412.01127","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2412.01127","created_at":"2026-07-05T09:42:54Z"},{"alias_kind":"arxiv_version","alias_value":"2412.01127v1","created_at":"2026-07-05T09:42:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2412.01127","created_at":"2026-07-05T09:42:54Z"},{"alias_kind":"pith_short_12","alias_value":"56WW3SBUYZ2F","created_at":"2026-07-05T09:42:54Z"},{"alias_kind":"pith_short_16","alias_value":"56WW3SBUYZ2FVYRC","created_at":"2026-07-05T09:42:54Z"},{"alias_kind":"pith_short_8","alias_value":"56WW3SBU","created_at":"2026-07-05T09:42:54Z"}],"graph_snapshots":[{"event_id":"sha256:2b2af285b135c3acfab94719563a67e7f851a731614d9560ba0a5251f39b86e0","target":"graph","created_at":"2026-07-05T09:42:54Z","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/2412.01127/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Sequential recommendation approaches have demonstrated remarkable proficiency in modeling user preferences. Nevertheless, they are susceptible to profile pollution attacks (PPA), wherein items are introduced into a user's interaction history deliberately to influence the recommendation list. Since retraining the model for each polluted item is time-consuming, recent PPAs estimate item influence based on gradient directions to identify the most effective attack candidates. However, the actual item representations diverge significantly from the gradients, resulting in disparate outcomes.To tackl","authors_text":"Jinhui Tang, Xiaoyu Du, Yang Zhang, Yingying Chen","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IR","submitted_at":"2024-12-02T05:03:56Z","title":"Precision Profile Pollution Attack on Sequential Recommenders via Influence Function"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2412.01127","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":"sha256:7bc210e5c30eb32f15f3e9bf8f4d89c7e22cabb514515275e359f7c5dd24026e","target":"record","created_at":"2026-07-05T09:42:54Z","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":"6897cf92ee098f0dc142c75a938c485796a418b26b1acce8840d5acb57837380","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IR","submitted_at":"2024-12-02T05:03:56Z","title_canon_sha256":"e6636af9e4ceaf5224bf7473c80b80de7286588b4b43871fb3c8f2d466ebf417"},"schema_version":"1.0","source":{"id":"2412.01127","kind":"arxiv","version":1}},"canonical_sha256":"efad6dc834c6745ae222b90880d3a9a164a6eeff09bab0ae005f92610ff04ba1","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"efad6dc834c6745ae222b90880d3a9a164a6eeff09bab0ae005f92610ff04ba1","first_computed_at":"2026-07-05T09:42:54.445982Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T09:42:54.445982Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"zcd1YasqSSLtNSnc2UNpUp+BA+zwQH4qYSkDQ/wlamar/+6G8XnSkhosEyr7QkdLeCputLQAQlzvRull3zGSCg==","signature_status":"signed_v1","signed_at":"2026-07-05T09:42:54.446521Z","signed_message":"canonical_sha256_bytes"},"source_id":"2412.01127","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7bc210e5c30eb32f15f3e9bf8f4d89c7e22cabb514515275e359f7c5dd24026e","sha256:2b2af285b135c3acfab94719563a67e7f851a731614d9560ba0a5251f39b86e0"],"state_sha256":"c3108e440f1de4ccd953180c44a61090861d5afe6a0d5797ad3a3b30907a0563"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"dp43lI37dB8p7UO6q5JnP9x1fChiMBYHaRe5PpF51+v+nJqbN60Xy4xkETLqQP3ysC7GKjlLBmys8K/WQlkSAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-24T00:27:14.484605Z","bundle_sha256":"dc2bf635c5664eb03681088d26b32e46863a6162fa6137b39d76a0fc018b0de8"}}