We have multiple cases when we want to make sure there is an explicit correlation between two data series apart from visually representing those series on a graph. Is there any simple KPI/PQL formula we can use, or do we need to go with a workaround deriving corr from calculating standard deviations etc?
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A simple solution for this is not available as far as I'm aware of. What you could do, is using the Machine Learning capabilities and load the data into statistical packages. I'm doubting however if this is easier that just calculating the values yourselves with the help of the mathematical functions.
If you do want to use the progamming languages, you could follow this:
- For the Cloud solution, you could set-up a Python script in the Machine Learning workbench that extracts the serie, calculates the statistics you want, and let it return in a KPI component. In the analysis you could use the 'Run ML-learning script' component to trigger the calculation.
- If you are running a on-premise version, you could establish this via the R-integration, which works directly from a PQL statement (this is a lot easier, would love to see this integration also in the Cloud).
Kind regards,
Jan-peter
@janpeter.van.d thanks a lot for your response!
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