Compositional signals in a situated communication task: easier used than made

14/05/2021, 16:00 (GMT+1, Warsaw), Zoom, click here to join the meeting

The next HILL seminar will be held this Friday, 14.05.2021 at 16:00. We will discuss the project of Krzysztof Główka, Julian Zubek, Borys Jastrzębski and Joanna Rączaszek-Leonardi“Compositional signals in a situated communication task: easier used than made”

This work is an attempt to create a novel model of communication emergence. To take a fresh look at recurring problems, we abandon the widespread assumption that language meaning can be modeled as straightforward mappings from signals to meanings. Instead, we model embodied and situated communication in which signal production and signal comprehension are two different abilities, requiring distinct adaptations. Under such conditions, a particular tension emerges between low signal complexity and high signal expressiveness. Our agents evolve functional communication protocols, which allows them to achieve significant task performance while keeping the signal entropy low. Because of the tendency to minimize the signal entropy, more complex compositional protocols do not emerge, but agents receiving fixed compositional signals learn to exploit them and outperform agents receiving non-compositional signals. This allows to ask novel questions about the exploitation and emergence of compositionality.

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