{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:XETAWZ5YMQC3DTUB765PZSSUYY","short_pith_number":"pith:XETAWZ5Y","canonical_record":{"source":{"id":"2002.03839","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.LG","submitted_at":"2020-02-10T15:04:09Z","cross_cats_sorted":["stat.ML"],"title_canon_sha256":"e7f2df40243870747477e6f84f1ee890cb21af7100a1d12523c09ec05db9a362","abstract_canon_sha256":"6725257651e503a3c4de02b563c181f96615fa51ccdd2e9f9a04493564fd5c78"},"schema_version":"1.0"},"canonical_sha256":"b9260b67b86405b1ce81ffbafcca54c63455c6ed556fcc04b3790fb4e848f9a3","source":{"kind":"arxiv","id":"2002.03839","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2002.03839","created_at":"2026-07-05T01:45:25Z"},{"alias_kind":"arxiv_version","alias_value":"2002.03839v3","created_at":"2026-07-05T01:45:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2002.03839","created_at":"2026-07-05T01:45:25Z"},{"alias_kind":"pith_short_12","alias_value":"XETAWZ5YMQC3","created_at":"2026-07-05T01:45:25Z"},{"alias_kind":"pith_short_16","alias_value":"XETAWZ5YMQC3DTUB","created_at":"2026-07-05T01:45:25Z"},{"alias_kind":"pith_short_8","alias_value":"XETAWZ5Y","created_at":"2026-07-05T01:45:25Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:XETAWZ5YMQC3DTUB765PZSSUYY","target":"record","payload":{"canonical_record":{"source":{"id":"2002.03839","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.LG","submitted_at":"2020-02-10T15:04:09Z","cross_cats_sorted":["stat.ML"],"title_canon_sha256":"e7f2df40243870747477e6f84f1ee890cb21af7100a1d12523c09ec05db9a362","abstract_canon_sha256":"6725257651e503a3c4de02b563c181f96615fa51ccdd2e9f9a04493564fd5c78"},"schema_version":"1.0"},"canonical_sha256":"b9260b67b86405b1ce81ffbafcca54c63455c6ed556fcc04b3790fb4e848f9a3","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:45:25.277181Z","signature_b64":"qycEiMJ83ptqo/RWLW4kP8CkbqCJhA1sW1BubksHki6PcK7UjCCHZ1qZ47E30YJAW4EMr3PaFPCf7Rj8Usc6Dw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b9260b67b86405b1ce81ffbafcca54c63455c6ed556fcc04b3790fb4e848f9a3","last_reissued_at":"2026-07-05T01:45:25.276779Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:45:25.276779Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2002.03839","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T01:45:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"L5XPGDjTt+ogx03iMZhmbspj+BlMEGVhUJRxwO8sapJw0xQv7Z9/xyKs1rUsS1LPqYl2QlaMrUODVsHxjR71BA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T05:47:09.405329Z"},"content_sha256":"3d777c2d95ecef42768192b0434c4832e3a6ff75628bd65ead299c7d094a8869","schema_version":"1.0","event_id":"sha256:3d777c2d95ecef42768192b0434c4832e3a6ff75628bd65ead299c7d094a8869"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:XETAWZ5YMQC3DTUB765PZSSUYY","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Adversarial Attacks on Linear Contextual Bandits","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["stat.ML"],"primary_cat":"cs.LG","authors_text":"Alessandro Lazaric, Baptiste Roziere, Evrard Garcelon, Jean Tarbouriech, Laurent Meunier, Matteo Pirotta, Olivier Teytaud","submitted_at":"2020-02-10T15:04:09Z","abstract_excerpt":"Contextual bandit algorithms are applied in a wide range of domains, from advertising to recommender systems, from clinical trials to education. In many of these domains, malicious agents may have incentives to attack the bandit algorithm to induce it to perform a desired behavior. For instance, an unscrupulous ad publisher may try to increase their own revenue at the expense of the advertisers; a seller may want to increase the exposure of their products, or thwart a competitor's advertising campaign. In this paper, we study several attack scenarios and show that a malicious agent can force a"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2002.03839","kind":"arxiv","version":3},"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/2002.03839/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":"2026-07-05T01:45:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"segNs5hradUVluWz0N3YCVfpQlrdo4gFJ4MNKW2BmxtBQHAtN/JJvVDaLNkQiEv5fotxQEGRe5s8H+hvXyxHAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T05:47:09.405966Z"},"content_sha256":"3c0b96ca19d3429878d2bfad44d7081d5be03e24c9f5da8c8a1eb1840b868471","schema_version":"1.0","event_id":"sha256:3c0b96ca19d3429878d2bfad44d7081d5be03e24c9f5da8c8a1eb1840b868471"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/XETAWZ5YMQC3DTUB765PZSSUYY/bundle.json","state_url":"https://pith.science/pith/XETAWZ5YMQC3DTUB765PZSSUYY/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/XETAWZ5YMQC3DTUB765PZSSUYY/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":"2026-07-07T05:47:09Z","links":{"resolver":"https://pith.science/pith/XETAWZ5YMQC3DTUB765PZSSUYY","bundle":"https://pith.science/pith/XETAWZ5YMQC3DTUB765PZSSUYY/bundle.json","state":"https://pith.science/pith/XETAWZ5YMQC3DTUB765PZSSUYY/state.json","well_known_bundle":"https://pith.science/.well-known/pith/XETAWZ5YMQC3DTUB765PZSSUYY/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:XETAWZ5YMQC3DTUB765PZSSUYY","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":"6725257651e503a3c4de02b563c181f96615fa51ccdd2e9f9a04493564fd5c78","cross_cats_sorted":["stat.ML"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.LG","submitted_at":"2020-02-10T15:04:09Z","title_canon_sha256":"e7f2df40243870747477e6f84f1ee890cb21af7100a1d12523c09ec05db9a362"},"schema_version":"1.0","source":{"id":"2002.03839","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2002.03839","created_at":"2026-07-05T01:45:25Z"},{"alias_kind":"arxiv_version","alias_value":"2002.03839v3","created_at":"2026-07-05T01:45:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2002.03839","created_at":"2026-07-05T01:45:25Z"},{"alias_kind":"pith_short_12","alias_value":"XETAWZ5YMQC3","created_at":"2026-07-05T01:45:25Z"},{"alias_kind":"pith_short_16","alias_value":"XETAWZ5YMQC3DTUB","created_at":"2026-07-05T01:45:25Z"},{"alias_kind":"pith_short_8","alias_value":"XETAWZ5Y","created_at":"2026-07-05T01:45:25Z"}],"graph_snapshots":[{"event_id":"sha256:3c0b96ca19d3429878d2bfad44d7081d5be03e24c9f5da8c8a1eb1840b868471","target":"graph","created_at":"2026-07-05T01:45:25Z","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/2002.03839/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Contextual bandit algorithms are applied in a wide range of domains, from advertising to recommender systems, from clinical trials to education. In many of these domains, malicious agents may have incentives to attack the bandit algorithm to induce it to perform a desired behavior. For instance, an unscrupulous ad publisher may try to increase their own revenue at the expense of the advertisers; a seller may want to increase the exposure of their products, or thwart a competitor's advertising campaign. In this paper, we study several attack scenarios and show that a malicious agent can force a","authors_text":"Alessandro Lazaric, Baptiste Roziere, Evrard Garcelon, Jean Tarbouriech, Laurent Meunier, Matteo Pirotta, Olivier Teytaud","cross_cats":["stat.ML"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.LG","submitted_at":"2020-02-10T15:04:09Z","title":"Adversarial Attacks on Linear Contextual Bandits"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2002.03839","kind":"arxiv","version":3},"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":"sha256:3d777c2d95ecef42768192b0434c4832e3a6ff75628bd65ead299c7d094a8869","target":"record","created_at":"2026-07-05T01:45:25Z","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":"6725257651e503a3c4de02b563c181f96615fa51ccdd2e9f9a04493564fd5c78","cross_cats_sorted":["stat.ML"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.LG","submitted_at":"2020-02-10T15:04:09Z","title_canon_sha256":"e7f2df40243870747477e6f84f1ee890cb21af7100a1d12523c09ec05db9a362"},"schema_version":"1.0","source":{"id":"2002.03839","kind":"arxiv","version":3}},"canonical_sha256":"b9260b67b86405b1ce81ffbafcca54c63455c6ed556fcc04b3790fb4e848f9a3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b9260b67b86405b1ce81ffbafcca54c63455c6ed556fcc04b3790fb4e848f9a3","first_computed_at":"2026-07-05T01:45:25.276779Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:45:25.276779Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"qycEiMJ83ptqo/RWLW4kP8CkbqCJhA1sW1BubksHki6PcK7UjCCHZ1qZ47E30YJAW4EMr3PaFPCf7Rj8Usc6Dw==","signature_status":"signed_v1","signed_at":"2026-07-05T01:45:25.277181Z","signed_message":"canonical_sha256_bytes"},"source_id":"2002.03839","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3d777c2d95ecef42768192b0434c4832e3a6ff75628bd65ead299c7d094a8869","sha256:3c0b96ca19d3429878d2bfad44d7081d5be03e24c9f5da8c8a1eb1840b868471"],"state_sha256":"85aead15516b2906d30dce4656d9c470df52bf2e1a6c3f12b5a358009ac3571c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+2UB8+bhgnOojNXY86zWtp/iqzMN3VCbWJPU3XP5rb2qoOzzf1Yz4KOP63cSSA6FgdTjxtIt4JTPw8n/iv0yAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-07T05:47:09.408971Z","bundle_sha256":"9afe5c4ec876b8fd7f1d9c8baa61d1b149547b96d6a4c61336bba0c6c0f8e0b2"}}