# Contextual Bandits on MovieLens 25M Source: [Contextual Bandits on MovieLens 25M]() Collection index: [llms.txt]() Data updated: 2026-06-23T09:36:32.055Z Evaluation of Contextual Bandit algorithms on the MovieLens 25M dataset, focusing on metrics related to non-private LinUCB performance. A research result applies to its stated dataset, split, metric and evaluation configuration. Compare like-for-like settings, preserve the metric's unit and direction, and distinguish paper-reported results from independent reproduction. The best result recorded here is not a claim of exhaustive, current global coverage. | Scope | Recorded value | | --- | --- | | Task | Contextual Bandits | | Dataset (including any stated split) | MovieLens 25M | | Metric | Success Rate vs Non-Private LinUCB | | Unit | PERCENT | | Direction | Higher is better | | Results loaded | 28 of 28 | | Coverage | All results currently returned for this benchmark | Evaluation settings may differ between results. The original papers and recorded configurations are needed to establish comparability. A shared metric name alone does not establish an identical protocol. ## Metrics - [Success Rate vs Non-Private LinUCB](): Higher is better; unit: PERCENT. ## Recorded results | Method | Success Rate vs Non-Private LinUCB | Result date | Report paper | | --- | --- | --- | --- | | AdaPrivate-TS | 90.6 | Not recorded | 6a3a1356206542251d7c733a | | RarelySwitching-zCDP | 84.7 | Not recorded | 6a3a1356206542251d7c733a | | AdaPrivate-UCB | 84.6 | Not recorded | 6a3a1356206542251d7c733a | | AdaPrivate-TS | 84.4 | Not recorded | 6a3a1356206542251d7c733a | | zCDP-Episodic | 84.2 | Not recorded | 6a3a1356206542251d7c733a | | AdaC-OFUL-zCDP | 84.1 | Not recorded | 6a3a1356206542251d7c733a | | RarelySwitching-zCDP | 81.9 | Not recorded | 6a3a1356206542251d7c733a | | zCDP-Episodic | 80.8 | Not recorded | 6a3a1356206542251d7c733a | | AdaPrivate-UCB | 80.7 | Not recorded | 6a3a1356206542251d7c733a | | AdaC-OFUL-zCDP | 79.8 | Not recorded | 6a3a1356206542251d7c733a | | RarelySwitching-zCDP | 75.2 | Not recorded | 6a3a1356206542251d7c733a | | AdaPrivate-TS | 75.2 | Not recorded | 6a3a1356206542251d7c733a | | AdaPrivate-UCB | 74.8 | Not recorded | 6a3a1356206542251d7c733a | | AdaC-OFUL-zCDP | 74.4 | Not recorded | 6a3a1356206542251d7c733a | | zCDP-Episodic | 74.2 | Not recorded | 6a3a1356206542251d7c733a | | RarelySwitching-zCDP | 72.6 | Not recorded | 6a3a1356206542251d7c733a | | AdaC-OFUL-zCDP | 72.3 | Not recorded | 6a3a1356206542251d7c733a | | zCDP-Episodic | 71.9 | Not recorded | 6a3a1356206542251d7c733a | | JDP-LinUCB | 71.8 | Not recorded | 6a3a1356206542251d7c733a | | AdaPrivate-UCB | 71.7 | Not recorded | 6a3a1356206542251d7c733a | | AdaPrivate-TS | 71.7 | Not recorded | 6a3a1356206542251d7c733a | | DGS-LinUCB | 71.2 | Not recorded | 6a3a1356206542251d7c733a | | DGS-LinUCB | 71.1 | Not recorded | 6a3a1356206542251d7c733a | | DGS-LinUCB | 71 | Not recorded | 6a3a1356206542251d7c733a | | DGS-LinUCB | 70.9 | Not recorded | 6a3a1356206542251d7c733a | | JDP-LinUCB | 69.4 | Not recorded | 6a3a1356206542251d7c733a | | JDP-LinUCB | 67.8 | Not recorded | 6a3a1356206542251d7c733a | | JDP-LinUCB | 66.5 | Not recorded | 6a3a1356206542251d7c733a | ### AdaPrivate-TS Success Rate vs Non-Private LinUCB: 90.6. Result ID: 6a3a538ffbc373592c35eda7. [Reporting paper]() [Method origin paper]() Recorded evaluation configuration: {"epsilon":"10"}. This record does not assert independent reproduction. ### RarelySwitching-zCDP Success Rate vs Non-Private LinUCB: 84.7. Result ID: 6a3a538ffbc373592c35ed9b. [Reporting paper]() [Method origin paper]() Recorded evaluation configuration: {"epsilon":"10"}. This record does not assert independent reproduction. ### AdaPrivate-UCB Success Rate vs Non-Private LinUCB: 84.6. Result ID: 6a3a538ffbc373592c35ed9f. [Reporting paper]() Recorded evaluation configuration: {"epsilon":"10"}. This record does not assert independent reproduction. ### AdaPrivate-TS Success Rate vs Non-Private LinUCB: 84.4. Result ID: 6a3a538ffbc373592c35eda6. [Reporting paper]() [Method origin paper]() Recorded evaluation configuration: {"epsilon":"5"}. This record does not assert independent reproduction. ### zCDP-Episodic Success Rate vs Non-Private LinUCB: 84.2. Result ID: 6a3a538ffbc373592c35ed93. [Reporting paper]() [Method origin paper]() Recorded evaluation configuration: {"epsilon":"10"}. This record does not assert independent reproduction. ### AdaC-OFUL-zCDP Success Rate vs Non-Private LinUCB: 84.1. Result ID: 6a3a538ffbc373592c35ed97. [Reporting paper]() [Method origin paper]() Recorded evaluation configuration: {"epsilon":"10"}. This record does not assert independent reproduction. ### RarelySwitching-zCDP Success Rate vs Non-Private LinUCB: 81.9. Result ID: 6a3a538ffbc373592c35ed9a. [Reporting paper]() [Method origin paper]() Recorded evaluation configuration: {"epsilon":"5"}. This record does not assert independent reproduction. ### zCDP-Episodic Success Rate vs Non-Private LinUCB: 80.8. Result ID: 6a3a538ffbc373592c35ed92. [Reporting paper]() [Method origin paper]() Recorded evaluation configuration: {"epsilon":"5"}. This record does not assert independent reproduction. ### AdaPrivate-UCB Success Rate vs Non-Private LinUCB: 80.7. Result ID: 6a3a538ffbc373592c35ed9e. [Reporting paper]() Recorded evaluation configuration: {"epsilon":"5"}. This record does not assert independent reproduction. ### AdaC-OFUL-zCDP Success Rate vs Non-Private LinUCB: 79.8. Result ID: 6a3a538ffbc373592c35ed96. [Reporting paper]() [Method origin paper]() Recorded evaluation configuration: {"epsilon":"5"}. This record does not assert independent reproduction. ### RarelySwitching-zCDP Success Rate vs Non-Private LinUCB: 75.2. Result ID: 6a3a538ffbc373592c35ed99. [Reporting paper]() [Method origin paper]() Recorded evaluation configuration: {"epsilon":"2"}. This record does not assert independent reproduction. ### AdaPrivate-TS Success Rate vs Non-Private LinUCB: 75.2. Result ID: 6a3a538ffbc373592c35eda5. [Reporting paper]() [Method origin paper]() Recorded evaluation configuration: {"epsilon":"2"}. This record does not assert independent reproduction. ### AdaPrivate-UCB Success Rate vs Non-Private LinUCB: 74.8. Result ID: 6a3a538ffbc373592c35ed9d. [Reporting paper]() Recorded evaluation configuration: {"epsilon":"2"}. This record does not assert independent reproduction. ### AdaC-OFUL-zCDP Success Rate vs Non-Private LinUCB: 74.4. Result ID: 6a3a538ffbc373592c35ed95. [Reporting paper]() [Method origin paper]() Recorded evaluation configuration: {"epsilon":"2"}. This record does not assert independent reproduction. ### zCDP-Episodic Success Rate vs Non-Private LinUCB: 74.2. Result ID: 6a3a538ffbc373592c35ed91. [Reporting paper]() [Method origin paper]() Recorded evaluation configuration: {"epsilon":"2"}. This record does not assert independent reproduction. ### RarelySwitching-zCDP Success Rate vs Non-Private LinUCB: 72.6. Result ID: 6a3a538ffbc373592c35ed98. [Reporting paper]() [Method origin paper]() Recorded evaluation configuration: {"epsilon":"1"}. This record does not assert independent reproduction. ### AdaC-OFUL-zCDP Success Rate vs Non-Private LinUCB: 72.3. Result ID: 6a3a538ffbc373592c35ed94. [Reporting paper]() [Method origin paper]() Recorded evaluation configuration: {"epsilon":"1"}. This record does not assert independent reproduction. ### zCDP-Episodic Success Rate vs Non-Private LinUCB: 71.9. Result ID: 6a3a538ffbc373592c35ed90. [Reporting paper]() [Method origin paper]() Recorded evaluation configuration: {"epsilon":"1"}. This record does not assert independent reproduction. ### JDP-LinUCB Success Rate vs Non-Private LinUCB: 71.8. Result ID: 6a3a538ffbc373592c35edab. [Reporting paper]() [Method origin paper]() Recorded evaluation configuration: {"epsilon":"10","Privacy Model":"Joint DP, tree-based composition"}. This record does not assert independent reproduction. ### AdaPrivate-UCB Success Rate vs Non-Private LinUCB: 71.7. Result ID: 6a3a538ffbc373592c35ed9c. [Reporting paper]() Recorded evaluation configuration: {"epsilon":"1"}. This record does not assert independent reproduction. ### AdaPrivate-TS Success Rate vs Non-Private LinUCB: 71.7. Result ID: 6a3a538ffbc373592c35eda4. [Reporting paper]() [Method origin paper]() Recorded evaluation configuration: {"epsilon":"1"}. This record does not assert independent reproduction. ### DGS-LinUCB Success Rate vs Non-Private LinUCB: 71.2. Result ID: 6a3a538ffbc373592c35eda3. [Reporting paper]() [Method origin paper]() Recorded evaluation configuration: {"epsilon":"10","Privacy Model":"per-step sequential composition"}. This record does not assert independent reproduction. ### DGS-LinUCB Success Rate vs Non-Private LinUCB: 71.1. Result ID: 6a3a538ffbc373592c35eda2. [Reporting paper]() [Method origin paper]() Recorded evaluation configuration: {"epsilon":"5","Privacy Model":"per-step sequential composition"}. This record does not assert independent reproduction. ### DGS-LinUCB Success Rate vs Non-Private LinUCB: 71. Result ID: 6a3a538ffbc373592c35eda1. [Reporting paper]() [Method origin paper]() Recorded evaluation configuration: {"epsilon":"2","Privacy Model":"per-step sequential composition"}. This record does not assert independent reproduction. ### DGS-LinUCB Success Rate vs Non-Private LinUCB: 70.9. Result ID: 6a3a538ffbc373592c35eda0. [Reporting paper]() [Method origin paper]() Recorded evaluation configuration: {"epsilon":"1","Privacy Model":"per-step sequential composition"}. This record does not assert independent reproduction. ### JDP-LinUCB Success Rate vs Non-Private LinUCB: 69.4. Result ID: 6a3a538ffbc373592c35edaa. [Reporting paper]() [Method origin paper]() Recorded evaluation configuration: {"epsilon":"5","Privacy Model":"Joint DP, tree-based composition"}. This record does not assert independent reproduction. ### JDP-LinUCB Success Rate vs Non-Private LinUCB: 67.8. Result ID: 6a3a538ffbc373592c35eda9. [Reporting paper]() [Method origin paper]() Recorded evaluation configuration: {"epsilon":"2","Privacy Model":"Joint DP, tree-based composition"}. This record does not assert independent reproduction. ### JDP-LinUCB Success Rate vs Non-Private LinUCB: 66.5. Result ID: 6a3a538ffbc373592c35eda8. [Reporting paper]() [Method origin paper]() Recorded evaluation configuration: {"epsilon":"1","Privacy Model":"Joint DP, tree-based composition"}. This record does not assert independent reproduction. Page 1 of 1. This is an index page, not the full collection.