During the neuroevolution process, we are evolving a population of individuals. Each of the individuals is evaluated against the test environment (such as an Atari game) and reward scores are collected per individual for each generation of evolution. To explore the general dynamics of the neuroevolution process, we need to have a tool that can visualize the cloud of results for each individual in each generation of evolution. Also, it is interesting to see the changes in the fitness score of the elite individual to understand the progress of the evolution process.
To address these requirements, the researchers from Uber AI developed the VINE tool, which we'll discuss next.