Kyoto University investigates the computational capabilities of ecological networks.
Kyoto University researchers have demonstrated the computational power of natural ecosystems through ecological reservoir computing, suggesting a link between high biodiversity and high computational power, and potentially leading to novel computer types and insights into ecosystem dynamics.
The exponential growth of neural networks and AI tools for data analysis is well documented. However, the information processing potential of networks found in natural ecosystems, such as interspecies relationships, remains largely untapped.
A recent study carried out at Kyoto University has shed light on the computational capabilities of ecosystems, offering a promising avenue for the swift advancement of AI technologies. The simulations conducted have verified that networks within ecosystems, such as the interactions between prey and predator, possess efficient information processing abilities and can be harnessed as a computational resource.
“We have named this approach ecological reservoir computing,” says Kyoto University’s lead author Masayuki Ushio.
The researchers developed two types of ecological reservoir computing as a proof-of-concept that ecological networks have computational power.
One type is a computer-based approach called in silico ecological reservoir computing, which models hypothetical ecosystem dynamics and simulates the system response. The second is an empirical system called real-time ecological reservoir computing, which uses the real-time population dynamics of the unicellular organism Tetrahymena thermophila.
In the second approach, to confirm the computational power of a natural ecological system, Ushio’s team set up an experimental design using Tetrahymena thermophila. After entering values as the temperature of the culturing medium — or input data — the team obtained cell numbers as system output. The study confirmed the possibility that the Tetrahymena population could make near-future predictions of ecological time series.
“Our results also suggest that there might be a link between high biodiversity and high computational power, shedding light on new values of previously unknown biodiversity,” adds Ushio, currently a principal investigator at The Hong Kong University of Science and Technology.
“A direct relationship between a community’s diversity and computational capability may enhance its biodiversity quotient.”
Ecological communities process a large amount of information in real-time in a natural ecosystem, where the potential of ecological interactions to serve as a novel computing method is significantly high.
“Our new computing method might lead to the invention of novel types of computers. Also, in developing a way to measure the information processing capacity of a natural ecosystem, we may find clues to how ecosystem dynamics are maintained,” concludes Ushio.
Reference: “Computational capability of ecological dynamics” by Masayuki Ushio, Kazufumi Watanabe, Yasuhiro Fukuda, Yuji Tokudome and Kohei Nakajima, 19 April 2023, Royal Society Open Science.