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Facebook Is Building a Minecraft AI

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by , 09-05-2019 at 04:29 PM (33 Views)
      
   
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It turns out that video games may be an excellent method of teaching skills to artificial intelligence assistants. That’s the theory of a group of researchers working for Facebook, who have focused on Minecraft as a potential teaching tool for building generalist AI — a so-called ‘virtual assistant.’ The research team isn’t trying to build an artificial intelligence that’s super-good at classifying images or other content — it wants to build a generalist AI that can perform a much larger number of tasks reasonably well.

This is, to-date, an under-studied area of research. The authors’ write:
There has been measured progress in this setting as well, with the mainstreaming of virtual personal assistants. These are able to accomplish thousands of tasks communicated via natural language, using multi-turn dialogue for clarifications or further specification. The assistants are able to interact with other applications to get data or perform actions.
Nevertheless, many difficult problems remain open. Automatic natural language understanding (NLU) is still rigid and limited to constrained scenarios. Methods for using dialogue or other natural language for rich supervision remain primitive. In addition, because they need to be able to reliably and predictably solve many simple tasks, their multi-modal inputs, and the constraints of their maintenance and deployment, assistants are modular systems, as opposed to monolithic ML models. Modular ML systems that can improve themselves from data while keeping well-defined interfaces are still not well studied.

According to the team, they picked Minecraft because it offered a regular distribution of tasks with “hand-holds for NLU research,” as well as enjoyable opportunities for human-AI interaction, with plenty of opportunities for human-in-the-loop research. Minecraft, for those of you who haven’t played or heard of it, is a block-based crafting and exploration game in which players explore a 3D voxel grid universe populated with various types of materials, neutral characters, and enemies. The team’s goal is to build an AI virtual assistant that can be given instructions in natural language by a Minecraft player, and that can reliably complete some of the primary tasks that player might engage in, including gathering materials, building structures, fighting mobs, and crafting items.

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