Dear all I built a workflow for a predictor model. All worked fine. My predictor model is trained with data about universities. Explanation: When a university is listed first, an accreditation check needs to be carried out. The second time, the same (known) university does not need to be checked again. I have two questions please: Question 1: In the test set, known (from the trained model) and unknown (new) universities are listed. For the known universities, a prediction (YES or NO) is listed. For the unknown universities, a question mark “?” is shown. Question: How can I replace the question mark with a “YES”? (The university needs to be checked, when it appears the first time) Question 2: In the basis datasheet (the datasheet to train the model), some universities are listed several times. So the value is once “YES” and the next time “NO”, as the university does not need to be checked again. For universities, which were tested several times, the correct value is shown in the test set (= NO). However, universities, which were only used once in the basis sheet to train the model, just have the value “YES”. Here, the second time (e.g. when the university is listed in the test sheet), a “NO” should be shown. (The university is already known and checked) However, the model does not recognize that. May you have a solution for this issue? Thank you for your support & answers. Best regards Lukas

Deployment workflow: How to provide a prediction for an unknown value

mlauber71 October 30, 2022, 6:03pm 8

@LukasB if you want to change values or implement some rules you could try these nodes like Column expressions with an if-then-else rule

KNIME Learner (a prediction model)

If Then Else Statement