Digital Library of Zielona Góra contains 9 272 digital objects
Object
Title: Accounting for label shift of positive unlabeled data under selection bias
Contributor:
Korbicz, Józef (1951- ) - red. ; Uciński, Dariusz - red.
Group publication title:
Abstract:
We consider the scenario when two samples of positive unlabeled (PU) data are available and for the second sample the change in prior probability of classes occurs while distributions of predictors in classes remain the same (label shift setting). The selection of positive elements may be object-dependent. ; We study the properties of the underlying probabilistic structure under the novel augmented PU scenario, proving in particular that label shift occurs also for unlabeled populations. We introduce and investigate an estimator of prior probability for label-shifted population. Furthermore, in this case we construct and analyze behavior of Bayes classifier in this setting. It turns out to be a Bayes classifier for the unlabeled class with a modified threshold. This gives rise to its three empirical counterparts which are compared on benchmark data sets.
Publisher:
Zielona Góra: Uniwersytet Zielonogórski
Resource Identifier:
DOI:
Pages:
Source:
AMCS, volume 35, number 3 (2025)
Language:
License CC BY 4.0:
Rights:
Biblioteka Uniwersytetu Zielonogórskiego
Object collections:
- Repository > Faculties > Faculty of Computer, Electrical and Control Engineering
- Repository > Types of work > Articles
- Repository > Scientific journals and UZ publishing series > International Journal of Applied Mathematics and Computer Science (AMCS) > International Journal of Applied Mathematics and Computer Science (AMCS) (2025)
Last modified:
Sep 8, 2025
In our library since:
Sep 8, 2025
Number of object content hits:
13
All available object's versions:
https://zbc.uz.zgora.pl/repozytorium/publication/102761
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International Journal of Applied Mathematics and Computer Science (AMCS), volume 35, number 1 (2025)
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International Journal of Applied Mathematics and Computer Science (AMCS), volume 35, number 2 (2025)
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International Journal of Applied Mathematics and Computer Science (AMCS), volume 35, number 3 (2025)
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| Edition name | Date |
|---|---|
| Accounting for label shift of positive unlabeled data under selection bias | Sep 8, 2025 |
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