I am storing my customer's devices logs in my index.
each customer has many devices and each device has a file path.
I have last 30 days of data .
IN splunk Machine Learning tookit i used PREDICT NUMERIC FIEDS and RandomforestRegressor gave me the best R2 value as 0.71.
You will need to apply your model after fitting it. Once your model is applied you can predict into the future. Your R2 is a little low, I would suggest adding additional explanatory fields to increase that R2 value. You could use correlate or the patterns tab to help identify other fields which may help in increasing your target values accuracy