SIMULATION ON EVOLUTION OF COMMUNICATION CONVENTIONS

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Explanation

In this simulation we consider a scenario of 400 communicative individuals in an unbounded, torus shaped space. This scenario is similar to the one described in Oliphant (1994), the main difference is that each agent goes through 5 life stages; after the fifth the first follows. During the fist stage, an individual selects a teacher from the set of its neighbours according to the communication success (fitness) they have accumulated during the previous life stage (a neighbour with double fitness has double probability to be selected). The newborn agent then acquires with a certain precision the communication system of its teacher: each mapping in the teacher's communication system is learned with probability 1-M and it is randomly chosen with probability M (where M is the language acquisition inprecision or mutation rate).

The left side panel represents the population of agents. The color of each square characterizes the communication system of the associated agent. The bottom left number is the age and the top right number is the fitness rounded and multiplied by 10 (X stands for 10). The graph in the right side panel represents the frequency of each colored communication system for each iteration. The black line specifies the level of the average fitness of the entire population.

The right side of the panel containes different parameters which can be set accordingly:

For more details you can download the technical report of this project.

References

Oliphant, M. (1994). The dilemma of Saussurean communication. BioSystems, 37(1-2), 31-38.