Kittler, J;
Zor, C;
(2019)
Delta Divergence: A Novel Decision Cognizant Measure of Classifier Incongruence.
IEEE Transactions on Cybernetics
, 49
(6)
pp. 2331-2343.
10.1109/TCYB.2018.2825353.
Preview |
Text
08370682.pdf - Published Version Download (1MB) | Preview |
Abstract
In pattern recognition, disagreement between two classifiers regarding the predicted class membership of an observation can be indicative of an anomaly and its nuance. Since, in general, classifiers base their decisions on class a posteriori probabilities, the most natural approach to detecting classifier incongruence is to use divergence. However, existing divergences are not particularly suitable to gauge classifier incongruence. In this paper, we postulate the properties that a divergence measure should satisfy and propose a novel divergence measure, referred to as delta divergence. In contrast to existing measures, it focuses on the dominant (most probable) hypotheses and, thus, reduces the effect of the probability mass distributed over the non dominant hypotheses (clutter). The proposed measure satisfies other important properties, such as symmetry, and independence of classifier confidence. The relationship of the proposed divergence to some baseline measures, and its superiority, is shown experimentally.
| Type: | Article |
|---|---|
| Title: | Delta Divergence: A Novel Decision Cognizant Measure of Classifier Incongruence |
| Location: | United States |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1109/TCYB.2018.2825353 |
| Publisher version: | http://doi.org/10.1109/TCYB.2018.2825353 |
| Language: | English |
| Additional information: | This work is licensed under a Creative Commons Attribution 3.0 License. For more information, see http://creativecommons.org/licenses/by/3.0/ |
| Keywords: | Classifier incongruence, divergence clutter, f-divergences, total variation distance |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Computer Science |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10067254 |
Loading...
Loading...Loading...Loading...Archive Staff Only
 |
View Item |
