@article{lifelonglearningincostlyfeaturespaces,
  title = {Lifelong Learning in Costly Feature Spaces},
  author = {Maria-Florina Balcan and Avrim Blum and Vaishnavh Nagarajan},
  year = {2017},
  eprint = {1706.10271},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1706.10271v1},
}