Emergence of Practical Language for Locations in a Simulated Warehouse through Language Games

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Title: Emergence of Practical Language for Locations in a Simulated Warehouse through Language Games
Author: Hantula, Otto
Contributor: University of Helsinki, Faculty of Science
Publisher: Helsingin yliopisto
Date: 2019
Language: eng
URI: http://urn.fi/URN:NBN:fi:hulib-201908133219
Thesis level: master's thesis
Discipline: Tietojenkäsittelytiede
Abstract: Emergence of language grounded in perception has been studied in computational agent societies with language games. In this thesis language games are used to investigate methods for grounding language in practicality. This means that the emergence of the language is based on the needs of the agents. The needs of an agent arise from its goals and environment, which together dictate what the agents should communicate to each other. The methods for practicality grounding are implemented in a simulation, where agents fetch items from shelves in a 2D grid warehouse. The agents learn a simple language consisting of words for spatial categories of xy-coordinates and different types of places in the warehouse environment. The language is learned and used through two novel language games called the Place Game and the Query Game. In these games the agents use the spatial categories and place types to refer to different locations in the warehouse, exchanging important information that can be used to make better decisions. The empirical simulation results show that the agents can utilise their language to be more efficient in fetching items. In other words the emerged language is practical.

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