Cascading sum-product networks using robustness

Diarmaid Conaty, Jesús Martínez del Rincon, Cassio de Campos

Onderzoeksoutput: Hoofdstuk in Boek/Rapport/CongresprocedureConferentiebijdrageAcademicpeer review

Samenvatting

Sum-product networks are an increasingly popular family of probabilistic graphical models for which marginal inference can be performed in polynomial time. They have been shown to achieve state-of-the-art performance in several tasks. When learning sum-product networks from scarce data, the obtained model may be prone to robustness issues. In particular, small variations of parameters could lead to different conclusions. We discuss the characteristics of sum-product networks as classifiers and study the robustness of them with respect to their parameters. Using a robustness measure to identify (possibly) unreliable decisions, we build a hierarchical approach where the classification task is deferred to another model if the outcome is deemed unreliable. We apply this approach on benchmark classification tasks and experiments show that the robustness measure can be a meaningful manner to improve classification accuracy.
Originele taal-2Engels
TitelProceedings of International Conference on Probabilistic Graphical Models, 11-14 September 2018, Prague, Czech Republic
Pagina's73-84
Aantal pagina's12
StatusGepubliceerd - 2018
Extern gepubliceerdJa
Evenement9th International Conference on Probabilistic Graphical Models - Prague, Tsjechië
Duur: 11 sep 201814 sep 2018

Publicatie series

NaamProceedings of Machine Learning Research
Volume72
ISSN van geprinte versie1938-7228

Congres

Congres9th International Conference on Probabilistic Graphical Models
LandTsjechië
StadPrague
Periode11/09/1814/09/18

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