Above 0.5 is supposed to indicate a trend is present.
Below 0.5 is noise.
0.5 is supposed to be Brownian Motion or regular market noise.
If you have corrections to the code you want to share, please post it.
I'm not an expert in math or coding, so this shouldn't be copied / ported.
This code didn't work very well as a filter, but you may have a fix or other use.
In true TradingView spirit, the author of this script has published it open-source, so traders can understand and verify it. Cheers to the author! You may use it for free, but reuse of this code in a publication is governed by House Rules. You can favorite it to use it on a chart.