public/subjects/ai/forest-prediction/audit

Forest Cover Type Prediction

The goal of this project is to use cartographic variables to classify forest categories. You will have to analyse the data, create features and to train a machine learning model on the cartographic data to make it as accurate as possible.

Preliminary

Is the structure of the project as below?

The expected structure of the project is:

project
│   README.md
│   environment.yml
│
└───data
│   │   train.csv
│   |   test.csv (not available first day)
|   |   covtype.info
│
└───notebook
│   │   EDA.ipynb
|
|───scripts
|   │   preprocessing_feature_engineering.py
|   │   model_selection.py
│   |   predict.py
│
└───results
    │   confusion_matrix_heatmap.png
    │   learning_curve_best_model.png
    │   test_predictions.csv
    │   best_model.pkl

Does the readme file contain a description of the project, explain how to run the code from an empty environment, give a summary of the implementation of each python file, especially details on the feature engineering which is a key step?

Does the environment contain all libraries used and their versions that are necessary to run the code?

Data splitting

Does data splitting (cross-validation) present a structure as the following?

DATA
└───TRAIN FILE (0)
│   └───── Train (1):
│   |           Fold0:
|   |                  Train
|   |                  Validation
|   |           Fold1:
|   |                   Train
|   |                   Validation
... ...         ...
|   |
|   └───── Test (1)
│
└─── TEST FILE (0)(available last day)

The train set (0) id divised in a train set (1) and test set (1). The ratio is less than 33%.

The cross validation splits the train set (1) is at least 5 folds. If the cross validation is stratified that's a good point but it is not a requirement.

Gridsearch

Does the gridsearch contain at least these 5 different models: Gradient Boosting, KNN, Random Forest, SVM, Logistic Regression?

There are many options:

• 5 grid searches on 1 model
• 1 grid search on 5 models
• 1 grid search on a pipeline that contains the preprocessing
• 5 grid searches on a pipeline that contains the preprocessing

Training

Is the target is removed from the X matrix presented?

Results

Run predict.py on the test set, is this comparison true? Test (last day) accuracy > 0.65.

Is the train accuracy score < 0.98?

It can be checked on the learning curve. If you are not sure, load the model, load the training set (0), score on the training set (0).

Is the confusion matrix is represented as a DataFrame? Example:

Is the learning curve for the best model plotted? Example:

Note: The green line on the plot shows the accuracy on the validation set not on the test set (1) and not on the test set (0).

Is the trained model saved as a pickle file ?