Fun story, my first market model (2003) was a simple feed-forward network trained using an evolutionary algorithm. This led me to LSTM and backprop, which required calculus, and pushed me to go back to college.
I've been thinking about building something again, based in P/E ratio and some portfolio mgmt strats I used for a college paper. Got the best returns for the semester but only a C grade because the prof didn't like my mechanical approach. I'm all about removing the fear and greed from the decision making.