DANLI: Deliberative Agent for Following Natural Language Instructions

• URL: http://arxiv.org/abs/2210.12485v1
• Date: Sat, 22 Oct 2022 15:57:01 GMT
• Title: DANLI: Deliberative Agent for Following Natural Language Instructions
• Authors: Yichi Zhang, Jianing Yang, Jiayi Pan, Shane Storks, Nikhil Devraj, Ziqiao Ma, Keunwoo Peter Yu, Yuwei Bao, Joyce Chai
• Abstract summary: We propose a neuro-symbolic deliberative agent that applies reasoning and planning based on its neural and symbolic representations acquired from past experience. We show that our deliberative agent achieves greater than 70% improvement over reactive baselines on the challenging TEACh benchmark.
• Score: 9.825482203664963
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Recent years have seen an increasing amount of work on embodied AI agents that can perform tasks by following human language instructions. However, most of these agents are reactive, meaning that they simply learn and imitate behaviors encountered in the training data. These reactive agents are insufficient for long-horizon complex tasks. To address this limitation, we propose a neuro-symbolic deliberative agent that, while following language instructions, proactively applies reasoning and planning based on its neural and symbolic representations acquired from past experience (e.g., natural language and egocentric vision). We show that our deliberative agent achieves greater than 70% improvement over reactive baselines on the challenging TEACh benchmark. Moreover, the underlying reasoning and planning processes, together with our modular framework, offer impressive transparency and explainability to the behaviors of the agent. This enables an in-depth understanding of the agent's capabilities, which shed light on challenges and opportunities for future embodied agents for instruction following. The code is available at https://github.com/sled-group/DANLI.

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