2020

Class-incremental learning: survey and performance evaluation on image classification

Masana, Marc, Liu, Xialei, Twardowski, Bartlomiej et al.

Understand

For future learning systems, incremental learning is desirable because it allows for: efficient resource usage by eliminating the need to retrain from scratch at the arrival of new data; reduced memory usage by preventing or limiting the amount of data required to be stored -- also important when privacy limitations are imposed; and learning that more closely resembles human learning.

  • The main challenge for incremental learning is catastrophic forgetting, which refers to the precipitous drop in performance on previously learned tasks after learning a new one.
  • Incremental learning of deep neural networks has seen explosive growth in recent years.
  • Initial work focused on task-incremental learning, where a task-ID is provided at inference time.

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