What does the worker do

It will use 4 different methods to solve the Boston House Price problem. The input file specifies the method (model), and the output file contains the R-squared score of the trained model on test data.

    ......
    methods = {
        "random forest": random_forest.train_evaluation_model,
        "linear regression": linear_regression.train_evaluation_model,
        "multi-layer perceptron": mlp.train_evaluation_model,
        "svm": svm.train_evaluation_model
    }
    X_train, X_test, y_train, y_test = get_X_y()
    acc = methods.get(first_line, default_method)(
        X_train, X_test, y_train, y_test)
    ......

The input file like the following:

job1.txt:
linear regression

job2.txt:
random forest

job3.txt:
multi-layer perceptron

job4.txt:
svm