Is this correct?: This tool accepts a linear data series, and matches it to an analytic function that can describe it with a minimal amount of coefficients / constants?
The basic idea is correct. The input file is a CSV with as many columns as you like, and the program will try to find the simplest y = f(x1, x2, x3, ...), where y is one of the columns. It does not generate a single solution, but a set of solutions of increasing complexity to choose from. The relationships that it finds are strongly nonlinear.