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SVM PCA model
Retrain a second SVM model having performed logistic regression
SVM Retraining
Having corrected the issue of biased data #14 we now need to retrain the SVM model to observe how it performs on a less biased representation of our dataset.
Cross-validation *after* parameter tuning
Apply K-folds CV after selecting the optimal hyperparameters
PCA Analysis
Perform PCA analysis on the dataframes (having removed persona & lamda)
LogReg Retraining
As with the SVM #15 & NN #16 issues, we need to retrain our logistic regression model, originally trained by @favioacostad
Test-train Split
Experiment with different test-train splits for the LogReg/SVM models. Try
- 80:20
- 90:10
- 95:5
PCA LogReg
Performing the model training with 250 principal components.
SVM Planning
Review SVM model and plan how the SVM model will work for the Churn model
Dataset bias issue
Alejo found an issue with our pre-processing steps where we apply a different standardisation process to each dataset (the retired vs non-retired datasets) we will need to retroactively fix this so we can retrain the models and evaluate their "real" performance.
NN Retraining
Fixing the bias issue for the NN model (same as #15) as trained by @juanfrh7 & @favioacostad
Produce model report metrics for NN models
@juanfrh7 go fill the accuracy metrics please :)
Plots don't show
Statistical analysis
Exploring and analysing the data before pre-processing
Neural network model
Lambda Issue
7 people have 0 for lambda (after doing log likelihood MLE per age range)
LogReg Model
Favio builds the Logistic Regression model
PCA Lambda should be removed
Lamda made our model really too good so we need to remove it
SVM Model: Planning & Initial Build
Start building a basic SVM model as a classifier (MVP)
End date is wrong
The end date for R/NR is wrong because the window has an incorrect end date. Therefore the ages and time spent at Asw is innacurate
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