2019

The Evolved Transformer

So, David R., Liang, Chen, Le, Quoc V.

Understand

Recent works have highlighted the strength of the Transformer architecture on sequence tasks while, at the same time, neural architecture search (NAS) has begun to outperform human-designed models.

  • Our goal is to apply NAS to search for a better alternative to the Transformer.
  • We first construct a large search space inspired by the recent advances in feed-forward sequence models and then run evolutionary architecture search with warm starting by seeding our initial population with the Transformer.
  • To directly search on the computationally expensive WMT 2014 English-German translation task, we develop the Progressive Dynamic Hurdles method, which allows us to dynamically allocate more resources to more promising candidate models.

Reading the bibliography…