Polynomial regression

[Jrinne]

My post about polynomial regression was inspired by your post about middling factors. What I did was similar, I think, but plugging what I did directly into P123 classic is difficult. And the resulting ranks in P123 classic miss the change in slope that I was looking for. The gentle upward curve, in other words. The ranks will not be changed in the example above. In more technical terms the ranks will not change in a monotonically increasing function and this will always be a compromise with P123 classic.

I think aschiff and Dan respectively had good posts that will help with your original question:

Devs: middling factors

While there are no settings to handle middling natively in ranking system nodes, you can use formulas like this: Abs(CapExGr%5Y - FMedian("CapExGr%5Y")). This formula will fold values around the median, so Ranking would need to be set to Lower values. (CapExGr%5Y is equivalent to the deprecated factor CapSp5YCGr%.) Is this a workable solution for you?

And Devs: middling factors - #3 by danp

I think those work and are relatively easy to implement with P123 classic. Polynomial regression is something to try when you want to do machine learning with P123 data downloads, I think.

Jim