Organizers: Paul Irofti, Laurențiu Leuștean and Andrei Pătraşcu

The LOS seminar is the working seminar of the LOS research center.

All seminars, except where otherwise indicated, will be Tuesdays between 14:00 and 15.50. The seminars are held locally at Hall 214 (“Google”) of the Faculty of Mathematics and Computer Science, University of Bucharest, but can also be occasionally held remotely.

To receive announcements about the seminar, please send an email to

Friday, 10 November, 2023 at 16.00

Andrei Iulian Hîji (LOS)
Anomaly Detection through Isolation Forest, Dictionary Learning and One Class SVM with applications in computer networks

Abstract: The first part of the presentation will introduce Isolation Forest based anomaly detection models, their characteristics and scope. The initial Isolation Forest, its limitations and a few variants that seek to improve detection performance while keeping the low execution time will be presented. The second part will show the contributions that I had in the NetAlert project, focusing on the implementation of some AD models tailored for the detection of some specific attacks. The last part will specify my contribution on the implementation of some anomaly detection models based on Dictionary Learning and OCSVM.