Abstract
Sum-product networks are a popular family of probabilistic graphical models for which marginal inference can be performed in polynomial time. After learning sum-product networks from scarce data, small variations of parameters could lead to different conclusions. We adapt the robustness measure created for categorical credal sum-product networks to domains with both continuous and categorical variables. We apply this approach to a real-world dataset of online purchases where the goal is to identify fraudulent cases. We empirically show that such credal models can better discriminate between easy and hard instances than simply using the probability of the most probable class.
Original language | English |
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Title of host publication | Proceedings of the Eleventh International Symposium on Imprecise Probabilities: Theories and Applications |
Editors | Jasper De Bock, Cassio P. de Campos, Gert de Cooman, Erik Quaeghebeur, Gregory Wheeler |
Publisher | PMLR |
Pages | 156-158 |
Number of pages | 3 |
Publication status | Published - 2019 |
Event | 11th International Symposium on Imprecise Probability: Theories and Applications, ISIPTA 2019 - Ghent, Belgium Duration: 3 Jul 2019 → 6 Jul 2019 Conference number: 11 |
Publication series
Name | Proceedings of Machine Learning Research |
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Publisher | PMLR |
Volume | 103 |
Conference
Conference | 11th International Symposium on Imprecise Probability: Theories and Applications, ISIPTA 2019 |
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Abbreviated title | ISIPTA 2019 |
Country/Territory | Belgium |
City | Ghent |
Period | 3/07/19 → 6/07/19 |