This Team won the Minecraft RL BASALT Challenge! (Paper Explanation & Interview with the authors)
#minerl #minecraft #deeplearning
The MineRL BASALT challenge has no reward functions or technical descriptions of what's to be achieved. Instead, the goal of each task is given as a short natural language string, and the agent is evaluated by a team of human judges who rate both how well the goal has been fulfilled, as well as how human-like the agent behaved. In this video, I interview KAIROS, the winning team of the 2021 challenge, and discuss how they used a combination of machine learning, efficient data collection, hand engineering, and a bit of knowledge about Minecraft to beat all other teams.
OUTLINE:
0:00 - Introduction
4:10 - Paper Overview
11:15 - Start of Interview
17:05 - First Approach
20:30 - State Machine
26:45 - Efficient Label Collection
30:00 - Navigation Policy
38:15 - Odometry Estimation
46:00 - Pain Points & Learnings
50:40 - Live Run Commentary
58:50 - What other tasks can be solved?
1:01:55 - What made the difference?
1:07:30 - Recommendations & Conclusion
1:11:10 - Full Runs: Waterfall
1:12:40 - Full Runs: Build House
1:17:45 - Full Runs: Animal Pen
1:20:50 - Full Runs: Find Cave
Paper: https://arxiv.org/abs/2112.03482
Code: https://github.com/viniciusguigo/kair...
Challenge Website: https://minerl.io/basalt/
Paper Title: Combining Learning from Human Feedback and Knowledge Engineering to Solve Hierarchical Tasks in Minecraft
Abstract:
Real-world tasks of interest are generally poorly defined by human-readable descriptions and have no pre-defined reward signals unless it is defined by a human designer. Conversely, data-driven algorithms are often designed to solve a specific, narrowly defined, task with performance metrics that drives the agent's learning. In this work, we present the solution that won first place and was awarded the most human-like agent in the 2021 NeurIPS Competition MineRL BASALT Challenge: Learning from Human Feedback in Minecraft, which challenged participants to use human data to solve four tasks defined only by a natural language description and no reward function. Our approach uses the available human demonstration data to train an imitation learning policy for navigation and additional human feedback to train an image classifier. These modules, together with an estimated odometry map, are then combined into a state-machine designed based on human knowledge of the tasks that breaks them down in a natural hierarchy and controls which macro behavior the learning agent should follow at any instant. We compare this hybrid intelligence approach to both end-to-end machine learning and pure engineered solutions, which are then judged by human evaluators. Codebase is available at this https URL.
Authors: Vinicius G. Goecks, Nicholas Waytowich, David Watkins, Bharat Prakash
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