Abstract
General-purpose robots operating in unstructured environments have the potential to benefit by leveraging abstract, commonsense knowledge for task execution. In this paper, we present an approach for automatically generating a compact semantic knowledge base, relevant to a robot’s particular operating environment, given only a small number of object labels obtained from object recognition or a robot’s task description. In order to cope with noise and non-deterministic data across our data sources, we formulate our representation as a statistical relational model represented as a Baysian Logic Network. We validate our approach in both abstract and real-world domains, demonstrating the robot’s ability to perform inference about object categories, locations and properties given a small amount of local information. Additionally, we present an approach for interactively validating the mined information with the help of a co-located user.
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Notes
- 1.
The gold standard was generated by hand based on commonsense information (e.g., UsedFor(Knife,Cut) is true), and then validated by comparing to crowd-generated labels from five crowd workers (0.8 agreement threshold). A comparison between hand-labeled and crowd-labeled data resulted in accuracy values within 1% for all tested instances.
- 2.
This approach could also be combined with crowdsourcing, although we relied on a co-present expert for all experiments described here.
- 3.
We ignore properties with value < 0.07.
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This work is supported in part by NSF IIS 1564080 and ONR N000141612835.
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Chernova, S. et al. (2020). Situated Bayesian Reasoning Framework for Robots Operating in Diverse Everyday Environments. In: Amato, N., Hager, G., Thomas, S., Torres-Torriti, M. (eds) Robotics Research. Springer Proceedings in Advanced Robotics, vol 10. Springer, Cham. https://doi.org/10.1007/978-3-030-28619-4_29
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