Papers › Symbolic Regression with Multimodal Large Language Models and Kolmogorov Arnold Networks

Symbolic Regression with Multimodal Large Language Models and Kolmogorov Arnold Networks

12 May 2025arXiv:2505.07956archive 2025-07-28

Thomas R. Harvey, Fabian Ruehle, Cristofero S. Fraser-Taliente, James Halverson

We present a novel approach to symbolic regression using vision-capable large language models (LLMs) and the ideas behind Google DeepMind's Funsearch. The LLM is given a plot of a univariate function and tasked with proposing an ansatz for that function. The free parameters of the ansatz are fitted using standard numerical optimisers, and a collection of such ans\"atze make up the population of a genetic algorithm. Unlike other symbolic regression techniques, our method does not require the specification of a set of functions to be used in regression, but with appropriate prompt engineering, we can arbitrarily condition the generative step. By using Kolmogorov Arnold Networks (KANs), we demonstrate that ``univariate is all you need'' for symbolic regression, and extend this method to multivariate functions by learning the univariate function on each edge of a trained KAN. The combined expression is then simplified by further processing with a language model.

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Kolmogorov-Arnold NetworksLanguage ModelingLanguage ModellingPrompt EngineeringSymbolic Regressionregression

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