# Outlier Detection on letter (historical) Source: [Outlier Detection on letter (historical)]() Collection index: [llms.txt]() Data updated: 2026-03-17T07:10:25.412Z Evaluation of Outlier Detection performance on the historical split of the letter dataset, measured by AUROC and AUPRC. 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 | Outlier Detection | | Dataset (including any stated split) | letter (historical) | | Metric | AUROC | | Unit | PERCENT | | Direction | Higher is better | | Results loaded | 17 of 17 | | 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 - [AUROC](): Higher is better; unit: PERCENT. - [AUPRC](): Higher is better; unit: PERCENT. ## Recorded results | Method | AUROC | Result date | Report paper | | --- | --- | --- | --- | | MetaOD | 90.09 | Not recorded | 68fa79e91e209131cea7feaf | | SLAD | 88.4 | Not recorded | 68fa79e91e209131cea7feaf | | NeutralAD | 88.26 | Not recorded | 68fa79e91e209131cea7feaf | | DTE-NP | 88.16 | Not recorded | 68fa79e91e209131cea7feaf | | KDE | 87.6 | Not recorded | 68fa79e91e209131cea7feaf | | LOF | 80.89 | Not recorded | 68fa79e91e209131cea7feaf | | kNN | 74.44 | Not recorded | 68fa79e91e209131cea7feaf | | ICL | 73.05 | Not recorded | 68fa79e91e209131cea7feaf | | UniOD | 64.05 | Not recorded | 68fa79e91e209131cea7feaf | | AE | 63.1 | Not recorded | 68fa79e91e209131cea7feaf | | IF | 62.92 | Not recorded | 68fa79e91e209131cea7feaf | | OC-SVM | 59.94 | Not recorded | 68fa79e91e209131cea7feaf | | DPAD | 58.2 | Not recorded | 68fa79e91e209131cea7feaf | | DSVDD | 57.46 | Not recorded | 68fa79e91e209131cea7feaf | | ECOD | 57.23 | Not recorded | 68fa79e91e209131cea7feaf | | LODA | 57.17 | Not recorded | 68fa79e91e209131cea7feaf | | KPCA + MLP | 55.51 | Not recorded | 68fa79e91e209131cea7feaf | ### MetaOD AUROC: 90.09. Result ID: 69b8fe5947f34ce924a0fea6. [Reporting paper]() [Method origin paper]() Recorded evaluation configuration: {"Release Year":"2021"}. This record does not assert independent reproduction. ### SLAD AUROC: 88.4. Result ID: 69b8fe5947f34ce924a0fea2. [Reporting paper]() [Method origin paper]() Recorded evaluation configuration: {"Release Year":"2023"}. This record does not assert independent reproduction. ### NeutralAD AUROC: 88.26. Result ID: 69b8fe5947f34ce924a0fe9f. [Reporting paper]() [Method origin paper]() Recorded evaluation configuration: {"Release Year":"2021"}. This record does not assert independent reproduction. ### DTE-NP AUROC: 88.16. Result ID: 69b8fe5947f34ce924a0fea4. [Reporting paper]() [Method origin paper]() Recorded evaluation configuration: {"Release Year":"2024"}. This record does not assert independent reproduction. ### KDE AUROC: 87.6. Result ID: 69b8fe5947f34ce924a0fe97. [Reporting paper]() Recorded evaluation configuration: {"Release Year":"1962"}. This record does not assert independent reproduction. ### LOF AUROC: 80.89. Result ID: 69b8fe5947f34ce924a0fe98. [Reporting paper]() Recorded evaluation configuration: {"Release Year":"2000"}. This record does not assert independent reproduction. ### kNN AUROC: 74.44. Result ID: 69b8fe5947f34ce924a0fe99. [Reporting paper]() Recorded evaluation configuration: {"Release Year":"2000"}. This record does not assert independent reproduction. ### ICL AUROC: 73.05. Result ID: 69b8fe5947f34ce924a0fea1. [Reporting paper]() Recorded evaluation configuration: {"Release Year":"2022"}. This record does not assert independent reproduction. ### UniOD AUROC: 64.05. Result ID: 69b8fe5947f34ce924a0fea7. [Reporting paper]() [Method origin paper]() Recorded evaluation configuration: {"Mode":"Ours"}. This record does not assert independent reproduction. ### AE AUROC: 63.1. Result ID: 69b8fe5947f34ce924a0fe9b. [Reporting paper]() Recorded evaluation configuration: {"Release Year":"2006"}. This record does not assert independent reproduction. ### IF AUROC: 62.92. Result ID: 69b8fe5947f34ce924a0fe9c. [Reporting paper]() Recorded evaluation configuration: {"Release Year":"2008"}. This record does not assert independent reproduction. ### OC-SVM AUROC: 59.94. Result ID: 69b8fe5947f34ce924a0fe9a. [Reporting paper]() Recorded evaluation configuration: {"Release Year":"2001"}. This record does not assert independent reproduction. ### DPAD AUROC: 58.2. Result ID: 69b8fe5947f34ce924a0fea3. [Reporting paper]() Recorded evaluation configuration: {"Release Year":"2024"}. This record does not assert independent reproduction. ### DSVDD AUROC: 57.46. Result ID: 69b8fe5947f34ce924a0fe9e. [Reporting paper]() Recorded evaluation configuration: {"Release Year":"2018"}. This record does not assert independent reproduction. ### ECOD AUROC: 57.23. Result ID: 69b8fe5947f34ce924a0fea0. [Reporting paper]() [Method origin paper]() Recorded evaluation configuration: {"Release Year":"2022"}. This record does not assert independent reproduction. ### LODA AUROC: 57.17. Result ID: 69b8fe5947f34ce924a0fe9d. [Reporting paper]() Recorded evaluation configuration: {"Release Year":"2016"}. This record does not assert independent reproduction. ### KPCA + MLP AUROC: 55.51. Result ID: 69b8fe5947f34ce924a0fea5. [Reporting paper]() Recorded evaluation configuration: Not recorded. This record does not assert independent reproduction. Page 1 of 1. This is an index page, not the full collection.