Saifu0/ml-visualizer ? reverse-engineered prompt

Build me a machine learning algorithm visualizer that lets a user upload or enter a dataset and then watch the model fit in real time. I want it to support linear regression, polynomial regression, and logistic regression, with clear charts that update as the training runs so it’s easy to see what the algorithm is doing.

Please make it work as a full app with a backend and a frontend, and set it up so the frontend can talk to the backend live while the visualization is running. Keep the interface simple and friendly, with controls for choosing the algorithm and providing the data, plus a clear display of the results.

If anything is unclear, use sensible defaults and look up current docs online if you need to. I’d like it to be easy to run locally too, with separate steps for the backend and frontend.