Patent · US Active

Classification robust against multiple perturbation types

US11481681B2 · kind B2 · utility

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Key dates

Filing dateApr 24, 2020
Grant dateOct 25, 2022
Priority date
Expiry dateMar 31, 2041

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG06F18/217
  • WIPO fieldComputer technology
  • WIPO sectorElectrical engineering

Abstract

A system for training a classification model to be robust against perturbations of multiple perturbation types. A perturbation type defines a set of allowed perturbations. The classification model is trained by, in an outer iteration, selecting a set of training instances of a training dataset; selecting, among perturbations allowed by the multiple perturbation types, one or more perturbations for perturbing the selected training instances to maximize a loss function; and updating the set of parameters of the classification model to decrease the loss for the perturbed instances. A perturbation is determined by, in an inner iteration, determining updated perturbations allowed by respective perturbation types of the multiple perturbation types and selecting an updated perturbation that most increases the loss of the classification model.

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