학술논문

Unsupervised Dictionary Learning for Anomaly Detection
Document Type
Working Paper
Source
Subject
Computer Science - Machine Learning
Computer Science - Cryptography and Security
Computer Science - Computer Vision and Pattern Recognition
Mathematics - Numerical Analysis
Language
Abstract
We investigate the possibilities of employing dictionary learning to address the requirements of most anomaly detection applications, such as absence of supervision, online formulations, low false positive rates. We present new results of our recent semi-supervised online algorithm, TODDLeR, on a anti-money laundering application. We also introduce a novel unsupervised method of using the performance of the learning algorithm as indication of the nature of the samples.
Comment: in Proceedings of iTWIST'20, Paper-ID: 09, Nantes, France, December, 2-4, 2020