Learning Differential Equations That Are Easy to Solve (arxiv.org)

Have a look at Prioritized Grammar Enumeration. It's a deterministic algo for recovering diffeqs from time series. Or math formulas from data... Or a search across models represented by a trie

https://github.com/verdverm/go-pge/raw/master/pge_gecco2013....

https://github.com/verdverm/pypge