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Internal state predictability as an evolutionary precursor of self-awareness and agency

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2 Author(s)
Jaerock Kwon ; Dept. of Comput. Sci., Texas A&M Univ., College Station, TX ; Yoonsuck Choe

What is the evolutionary value of self-awareness and agency in intelligent agents? One way to make this problem tractable is to think about the necessary conditions that lay the foundation for the emergence of agency, and assess their evolutionary origin.We postulate that one such requirement is the predictability of the internal state trajectory. A distinct property of onepsilas own actions compared to someone elsepsilas is that onepsilas own is highly predictable, and this gives the sense of ldquoauthorshiprdquo. In order to investigate if internal state predictability has any evolutionary value, we evolved sensorimotor control agents driven by a recurrent neural network in a 2D pole-balancing task. The hidden layer activity of the network was viewed as the internal state of an agent, and the predictability of its trajectory was measured. We took agents exhibiting equal levels of performance during evolutionary trials, and grouped them into those with high or low internal state predictability (ISP). The high-ISP group showed better performance than the low-ISP group in novel tasks with substantially harder initial conditions. These results indicate that regularity or predictability of neural activity in internal dynamics of agents can have a positive impact on fitness, and, in turn, can help us better understand the evolutionary role of self-awareness and agency.

Published in:

Development and Learning, 2008. ICDL 2008. 7th IEEE International Conference on

Date of Conference:

9-12 Aug. 2008