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Shrinkage Expansion Adaptive Metric Learning

  • Qilong Wang
  • Wangmeng Zuo
  • Lei Zhang
  • Peihua Li
Part of the Lecture Notes in Computer Science book series (LNCS, volume 8695)

Abstract

Conventional pairwise constrained metric learning methods usually restrict the distance between samples of a similar pair to be lower than a fixed upper bound, and the distance between samples of a dissimilar pair higher than a fixed lower bound. Such fixed bound based constraints, however, may not work well when the intra- and inter-class variations are complex. In this paper, we propose a shrinkage expansion adaptive metric learning (SEAML) method by defining a novel shrinkage-expansion rule for adaptive pairwise constraints. SEAML is very effective in learning metrics from data with complex distributions. Meanwhile, it also suggests a new rule to assess the similarity between a pair of samples based on whether their distance is shrunk or expanded after metric learning. Our extensive experimental results demonstrated that SEAML achieves better performance than state-of-the-art metric learning methods. In addition, the proposed shrinkage-expansion adaptive pairwise constraints can be readily applied to many other pairwise constrained metric learning algorithms, and boost significantly their performance in applications such as face verification on LFW and PubFig databases.

Keywords

Shrinkage-expansion rule adaptive bound constraints pairwise constrained metric learning face verification 

Supplementary material

978-3-319-10584-0_30_MOESM1_ESM.pdf (44 kb)
Electronic Supplementary Material (PDF 44 KB)

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Copyright information

© Springer International Publishing Switzerland 2014

Authors and Affiliations

  • Qilong Wang
    • 1
    • 3
  • Wangmeng Zuo
    • 2
  • Lei Zhang
    • 3
  • Peihua Li
    • 1
  1. 1.School of Information and Communications EngineeringDalian University of TechnologyChina
  2. 2.School of Computer Science and TechnologyHarbin Institute of TechnologyChina
  3. 3.Department of ComputingHong Kong Polytechnic UniversityHong Kong

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