Grounded Language Learning in a Simulated 3D World

Authors: Karl Moritz Hermann, Felix Hill, Simon Green, Fumin Wang, Ryan Faulkner, Hubert Soyer, David Szepesvari, Wojciech Marian Czarnecki, Max Jaderberg, Denis Teplyashin, Marcus Wainwright, Chris Apps, Demis Hassabis, Phil Blunsom

16 pages, 8 figures

Results of the summarizing process for the arXiv paper: 1706.06551v2

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In today's world, we are surrounded by artificially intelligent technology that makes decisions and takes actions on our behalf. This creates a need for effective communication between humans and artificial agents, with human language being the most natural and compelling means of interaction. To address this challenge, researchers have developed an agent that learns to interpret language in a simulated 3D environment. The agent is rewarded for successfully executing written instructions within this virtual world. Through a combination of reinforcement learning and unsupervised learning techniques, the agent starts with minimal prior knowledge and gradually learns to associate linguistic symbols with perceptual representations of its physical surroundings and sequences of actions. What sets this agent apart is its ability to comprehend language beyond its prior experience. It can apply familiar language to unfamiliar situations and even interpret entirely novel instructions. As the agent's semantic knowledge grows, it becomes faster at learning new words, showcasing its capacity for generalizing and bootstrapping semantic knowledge. This research demonstrates the potential of using a grounded approach to reconcile ambiguous natural language with the complexity of the physical world. By enabling AI agents to understand human language in a more embodied manner, we can pave the way for more effective communication between humans and machines in various domains.
AI-generated keywords: AI Language Agent Environment Semantic

AI-generated Key Points

  • Artificially intelligent technology surrounds us, making decisions and taking actions on our behalf
  • Effective communication between humans and artificial agents is crucial
  • Human language is the most natural and compelling means of interaction
  • Researchers have developed an agent that learns to interpret language in a simulated 3D environment
  • The agent is rewarded for successfully executing written instructions in the virtual world
  • Combination of reinforcement learning and unsupervised learning techniques used
  • Agent starts with minimal prior knowledge and gradually learns to associate language with physical surroundings and actions
  • Agent can comprehend familiar language in unfamiliar situations and interpret novel instructions
  • Agent's semantic knowledge grows, enabling faster learning of new words and showcasing capacity for generalizing semantic knowledge
  • Research demonstrates potential of using grounded approach to reconcile ambiguous natural language with complexity of physical world
  • Enabling AI agents to understand human language in an embodied manner paves way for more effective communication between humans and machines.
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Abstract: We are increasingly surrounded by artificially intelligent technology that takes decisions and executes actions on our behalf. This creates a pressing need for general means to communicate with, instruct and guide artificial agents, with human language the most compelling means for such communication. To achieve this in a scalable fashion, agents must be able to relate language to the world and to actions; that is, their understanding of language must be grounded and embodied. However, learning grounded language is a notoriously challenging problem in artificial intelligence research. Here we present an agent that learns to interpret language in a simulated 3D environment where it is rewarded for the successful execution of written instructions. Trained via a combination of reinforcement and unsupervised learning, and beginning with minimal prior knowledge, the agent learns to relate linguistic symbols to emergent perceptual representations of its physical surroundings and to pertinent sequences of actions. The agent's comprehension of language extends beyond its prior experience, enabling it to apply familiar language to unfamiliar situations and to interpret entirely novel instructions. Moreover, the speed with which this agent learns new words increases as its semantic knowledge grows. This facility for generalising and bootstrapping semantic knowledge indicates the potential of the present approach for reconciling ambiguous natural language with the complexity of the physical world.

Submitted to arXiv on 20 Jun. 2017

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