Distance Metric Facilitated Transportation between Heterogeneous Domains

Distance Metric Facilitated Transportation between Heterogeneous Domains

Han-Jia Ye, Xiang-Rong Sheng, De-Chuan Zhan, Peng He

Proceedings of the Twenty-Seventh International Joint Conference on Artificial Intelligence
Main track. Pages 3012-3018. https://doi.org/10.24963/ijcai.2018/418

Lacking training examples is one of the main obstacles to learning systems. Transfer learning aims to extract and utilize useful information from related datasets and assists the current task effectively. Most existing methods restrict tasks connection on the same feature sets, or require aligned examples cross domains, even cannot take full advantage of the limited label information. In this paper, we focus on transferring between heterogeneous domains, i.e., those with different feature spaces, and propose the Metric Transporation on HEterogeneous REpresentations (MapHere) approach. In particular, an asymmetric transformation map is first learned to compensate the  cross-domain feature difference based on linkage relationship between objects; then the inner-domain discrepancy is further reduced with learned optimal transportation. Note that both source domain and cross-domain relationship are fully utilized in MapHere, which helps improve target classification task a lot.  Experiments on synthetic dataset validate the importance of the ''metric facilitated'' consideration, while results on real-world image and text classification also show the superiority of the proposed MapHere approach.
Keywords:
Machine Learning: Transfer, Adaptation, Multi-task Learning
Machine Learning: Multi-instance;Multi-label;Multi-view learning