Title
Target contrastive pessimistic risk for robust domain adaptation.
Abstract
In domain adaptation, classifiers with information from a source domain adapt to generalize to a target domain. However, an adaptive classifier can perform worse than a non-adaptive classifier due to invalid assumptions, increased sensitivity to estimation errors or model misspecification. Our goal is to develop a domain-adaptive classifier that is robust in the sense that it does not rely on restrictive assumptions on how the source and target domains relate to each other and that it does not perform worse than the non-adaptive classifier. We formulate a conservative parameter estimator that only deviates from the source classifier when a lower risk is guaranteed for all possible labellings of the given target samples. We derive the classical least-squares and discriminant analysis cases and show that these perform on par with state-of-the-art domain adaptive classifiers in sample selection bias settings, while outperforming them in more general domain adaptation settings.
Year
Venue
Field
2017
arXiv: Machine Learning
Domain adaptation,Pessimism,Artificial intelligence,Linear discriminant analysis,Classifier (linguistics),Machine learning,Selection bias,Mathematics,Estimator
DocType
Volume
Citations 
Journal
abs/1706.08082
2
PageRank 
References 
Authors
0.34
13
2
Name
Order
Citations
PageRank
Wouter M. Kouw192.79
Marco Loog21796154.31