Eco-computing

(Press-News.org) Kyoto, Japan -- Development of neural networks or AI tools for data analysis is increasing exponentially. However, networks existing in natural ecosystems, such as webs of interspecies relationships, have information processing potential that has largely remained untapped.

Now, a study conducted at Kyoto University has demonstrated the computational power of ecosystems, providing a new direction for rapidly developing AI technologies. Simulations have confirmed that ecological networks, such as prey-predator interactions, can efficiently process information and be utilized 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.

###

The paper "Computational capability of ecological dynamics" appeared on 19 April 2023 in Royal Society Open Science, with doi: 10.1098/rsos.221614

About Kyoto University

Kyoto University is one of Japan and Asia's premier research institutions, founded in 1897 and responsible for producing numerous Nobel laureates and winners of other prestigious international prizes. A broad curriculum across the arts and sciences at both undergraduate and graduate levels is complemented by numerous research centers, as well as facilities and offices around Japan and the world. For more information, please see: http://www.kyoto-u.ac.jp/en

END