2016

Semi-supervised Kernel Metric Learning Using Relative Comparisons

Amid, Ehsan, Gionis, Aristides, Ukkonen, Antti

Understand

We consider the problem of metric learning subject to a set of constraints on relative-distance comparisons between the data items.

  • Such constraints are meant to reflect side-information that is not expressed directly in the feature vectors of the data items.
  • The relative-distance constraints used in this work are particularly effective in expressing structures at finer level of detail than must-link (ML) and cannot-link (CL) constraints, which are most commonly used for semi-supervised clustering.
  • Relative-distance constraints are thus useful in settings where providing an ML or a CL constraint is difficult because the granularity of the true clustering is unknown.

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