Survey on reinforcement learning for language processing
It provides a survey for researchers and practitioners in NLP and RL, but is incremental as it summarizes existing work without new results.
This paper reviews the state of the art of reinforcement learning methods for natural language processing tasks, focusing on conversational systems, and analyzes their advantages, limitations, and promising research directions.
In recent years some researchers have explored the use of reinforcement learning (RL) algorithms as key components in the solution of various natural language processing tasks. For instance, some of these algorithms leveraging deep neural learning have found their way into conversational systems. This paper reviews the state of the art of RL methods for their possible use for different problems of natural language processing, focusing primarily on conversational systems, mainly due to their growing relevance. We provide detailed descriptions of the problems as well as discussions of why RL is well-suited to solve them. Also, we analyze the advantages and limitations of these methods. Finally, we elaborate on promising research directions in natural language processing that might benefit from reinforcement learning.