Effective Multiclass Transfer for Hypothesis Transfer Learning

Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 10235)

Abstract

In this paper, we investigate the visual domain adaptation problem under the setting of Hypothesis Transfer Learning (HTL) where we can only access the source model instead of the data. However, previous studies of HTL are limited to either leveraging the knowledge from certain type of source classifier or low transfer efficiency on a small training set. In this paper, we aim at two important issues: effectiveness of the transfer on small target training set and compatibility of the transfer model for real-world HTL problems. To solve these two issues, we proposed our method, Effective Multiclass Transfer Learning (EMTLe). We demonstrate that EMTLe, which uses the prediction of the source models as the transferable knowledge can exploit the knowledge of different types of source classifiers. We use the transfer parameter to weigh the importance the prediction of each source model as the auxiliary bias. Then we use the bi-level optimization to estimate the transfer parameter and demonstrate that we can effectively obtain the optimal transfer parameter with our novel objective function. Empirical results show that EMTLe can effectively exploit the knowledge and outperform other HTL baselines when the size of the target training set is small.

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Copyright information

© Springer International Publishing AG 2017

Authors and Affiliations

  1. 1.Department of Computer ScienceWestern UniversityLondonCanada

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