I have a dataset of two column values something like the one shown below. I need to predict the values of y for values of x greater than 60. The curve must follow the increasing trend it is shown till x=60.
I have tried polynomial regression and SVR but it declines for values greater than 60. I have tried to fit the curve y = alnx + b to this curve but the R2score is 0.94. What model can I train for this purpose, or how can I improve the R2score but regressing over an appropriate logarithmic function?
What i would do, and i dont really have a clue:
Plot points not a line, you dont know whats between the points, so your line is just an assumtion.
Cut away the first few points to get rid of this strange jump
If there is a physical theorie behind, use it
If you want to do ML, use 10…20% of your points. Fit you basic function, compare with rest of datapoints.