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Scenario custom trigger with a projet variable

Level 2
Scenario custom trigger with a projet variable

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I have some scenarios building some train models and generating a metric with the RMSE and i would like to launch a second scenario to builde the prediction if RMSE generate by the last scenario is good. (to launch the predictions) I don't find anything corresponding to my problem on the helpers, the only part that comes close is the png part. I thought it would be a trigger like this:

from dataiku.scenario import Trigger

t = Trigger()

if True: ${RMSE}>4 # your condition here

t.fire()

With ${RMSE} the project variable that would change based on the last RMSE obtained from the train's output table?
Is this kind of thing possible on Dataiku in a simple way?

Thanks.

 

2 Replies
Dataiker
Dataiker

Hi,

If we assume that we have a project-level variable called rmse, then we could create a trigger like this to fire off a scenario when that variable is above a number (in this case 4):

 

import dataiku
from dataiku.scenario import Trigger

c_vars = dataiku.get_custom_variables()
t = Trigger()

if float(c_vars['rmse']) > 4: 
    t.fire()

 

 

Level 2
Author

Thanks for you response.

What I'm looking for is for my project variable RMSE to be equal to the last calculated metric by the first scenario.