Flow-Variables not working with Parameter Optimization Loop Start?

[JakobJosef]

Dear community,

is there a bug within the nodes Parameter Optimization Loop Start/SARIMA-Learner or did i made the wrong configurations?

For test-purposes, i did create 4 flow-variables for SARIMA-Learner:

Even though i created 4 parameters, I only used 2 of them for SARIMA-node:

Nevertheless, KNIME uses all 4 parameters in the loop:

Is this how it is supposed to be, did I get something wrong?

Workflow and dataset are in this post:
ARIMA/SARIMA possible? - KNIME Analytics Platform - KNIME Community Forum

Best
Jakob

[k10shetty1]

Hello @JakobJosef,

Thank you for sharing your observations.

It’s important to note that in the Parameter Optimization Loop, node will iterate over all the parameters you have provided, regardless of how many are actively used in the SARIMA node.

The loop’s behavior is determined by the strategy you defined (eg:- Brute Force), which means it will systematically go through all the parameters provided, even if some are not directly used in the further node. This is expected behavior and not a bug.

If you wish to limit the loop to only certain parameters, you’ll need to use only ones that are required. Hope this helps.

Best,
Keerthan

[JakobJosef]

hi @k10shetty1 ,

thank you very much for your explanation, good to know how to use this node properly!

Best,
Jakob