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@InProceedings{IJCAI19b-torabi,
  author = {Faraz Torabi and Garrett Warnell and Peter Stone},
  title = {Imitation Learning from Video by Leveraging Proprioception},
  booktitle = {Proceedings of the 28th International Joint Conference on Artificial Intelligence (IJCAI)},
  location = {Macao, China},
  month = {August},
  year = {2019},
  abstract = {
Classically, imitation learning algorithms have been developed for idealized 
situations, e.g., the demonstrations are often required to be collected in the 
exact same environment and usually include the demonstrator's actions. 
Recently, however, the research community has begun to address some of these 
shortcomings by offering algorithmic solutions that enable imitation learning 
from observation (IfO), e.g., learning to perform a task from visual 
demonstrations that may be in a different environment and do not include
actions. Motivated by the fact that agents often also have access to their own 
internal states (i.e., proprioception), we propose and study an IfO algorithm 
that leverages this information in the policy learning process. The proposed 
architecture learns policies over proprioceptive state representations and 
compares the resulting trajectories visually to the demonstration data. We 
experimentally test the proposed technique on several MuJoCo domains and show 
that it outperforms other imitation from observation algorithms by a large 
margin.
  },
}