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Prunning Trees
Does PredictIQ have the ability to prune trees within models to avoid over fitting. I found this article which talks about this. http://www.statmethods.net/advstats/cart.html
Aug 18, 2014
1
Question on Iterations
User question received today. "When I’m running various iterations of a model (let’s saying Categorical Binning Yes/No and Numeric Binning Yes/No) there are 4 iterations. However, I can’t analyze each...
Apr 20, 2017
1
Model run times
What settings have the most impact on run times? I have already seen that if I cap the number of predictors from the default of 50 to 12 this has a big impact. I would assume looking for higher order ...
Aug 21, 2014
1
I turned off numeric and categorical binning, but I'm still getting bins?
LityxIQ may still do binning in some situations depending on other settings like choosing to have numeric missing replaced with categories or having too many unique values in a field. It will bin for ...
May 09, 2023
not commented yet
XGBoost Overfitting?
XGBoost is great, but there may be concern that it results in models that are too good and overfitted. Are there ways to reduce the "tightness" of the model? In the estimation of the predictor coeffic...
Apr 19, 2022
1
If I use an oversampled file for model building can I show the results as if I had not used an oversample file?
Within the PredictIQ model build settings the last tab called output allows you to ‘set population average for target’. This results in the predicted scores being scaled down to reflect the population...
Aug 18, 2014
not commented yet
Pruning Trees
Does PREDICT have the ability to prune trees within models to avoid over fitting. I found this article which talks about this. http://www.statmethods.net/advstats/cart.html
Feb 09, 2017
1
Lift vs. Numeric Lift what is the difference?
Building a revenue model and I see that Lift 1 over random =3.2 so decile 1 is 3.2 higher than the random. However, Numeric 1 vs 10 is only 2.83 -- what is numeric 1 vs 10 -- would expect it to be dec...
Aug 18, 2014
1
Model Run Time
Is there a way that I can tell how long a model run took?
Aug 18, 2014
1
Question on model weights
If you took all responders and 1/3 of non-responders, I would historically build models using the Weight statement since not including it would affect the model calibration. In addition, the performan...
Aug 18, 2014
1
Scoring Code Output
Can I output the scoring code for a model I create in LityxIQ?
Aug 18, 2014
1
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