no code implementations • 21 Aug 2023 • Jan Brabec, Filip Šrajer, Radek Starosta, Tomáš Sixta, Marc Dupont, Miloš Lenoch, Jiří Menšík, Florian Becker, Jakub Boros, Tomáš Pop, Pavel Novák
The growing sophistication of Business Email Compromise (BEC) and spear phishing attacks poses significant challenges to organizations worldwide.
1 code implementation • 6 Mar 2023 • Radovan Haluška, Jan Brabec, Tomáš Komárek
These methods modify the training dataset by oversampling, undersampling or a combination of both to improve the predictive performance of classifiers trained on this dataset.
no code implementations • 10 Nov 2021 • Jan Kohout, Čeněk Škarda, Kyrylo Shcherbin, Martin Kopp, Jan Brabec
In this work, we discuss these limitations and design a detection framework which combines observed events from different sources of data.
no code implementations • 25 Jul 2021 • Jan Brabec, Lukas Machlica
The algorithm leverages out-of-bag datasets to estimate prediction errors of individual trees, which are then used in accordance with the Bayes rule to refine the decision of the ensemble.
1 code implementation • 15 Jan 2020 • Jan Brabec, Tomáš Komárek, Vojtěch Franc, Lukáš Machlica
Many real-world classification problems are significantly class-imbalanced to detriment of the class of interest.
no code implementations • 4 Dec 2018 • Jan Brabec, Lukas Machlica
For research to go in the right direction, it is essential to be able to compare and quantify performance of different algorithms focused on the same problem.