2019

Unbiased Evaluation of Deep Metric Learning Algorithms

Fehervari, Istvan, Ravichandran, Avinash, Appalaraju, Srikar

Understand

Deep metric learning (DML) is a popular approach for images retrieval, solving verification (same or not) problems and addressing open set classification.

  • Arguably, the most common DML approach is with triplet loss, despite significant advances in the area of DML.
  • Triplet loss suffers from several issues such as collapse of the embeddings, high sensitivity to sampling schemes and more importantly a lack of performance when compared to more modern methods.
  • We attribute this adoption to a lack of fair comparisons between various methods and the difficulty in adopting them for novel problem statements.

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