2020

A Survey of Active Learning for Text Classification using Deep Neural Networks

Schröder, Christopher, Niekler, Andreas

Understand

Natural language processing (NLP) and neural networks (NNs) have both undergone significant changes in recent years.

  • For active learning (AL) purposes, NNs are, however, less commonly used -- despite their current popularity.
  • By using the superior text classification performance of NNs for AL, we can either increase a model's performance using the same amount of data or reduce the data and therefore the required annotation efforts while keeping the same performance.
  • We review AL for text classification using deep neural networks (DNNs) and elaborate on two main causes which used to hinder the adoption: (a) the inability of NNs to provide reliable uncertainty estimates, on which the most commonly used query strategies rely, and (b) the challenge of training DNNs on small data.

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