A study was conducted to test the effect of applied psychological therapy on reducing the negative effects of puberty. For this purpose, three groups of 5 subjects were selected. The first group received family therapy, the second group received individual therapy, and the third group received no help. After six months, levels of depression, anxiety, and social chaos were examined. The following results were obtained (the higher the value the higher the level of the trait): Group 1: (6, 8, 9), (4, 3, 3), (0, 2, 8), (4, 1, 6), (0, 8, 4); Group 2: (11, 9, 8), (11, 6, 6), (5, 7, 4), (8, 6, 5), (4, 9, 4); Group 3: (12, 11, 6), (8, 8, 5), (9, 6, 7), (8, 10, 8), (11, 4, 3). Construct a Naive Bayesian model (with normal distributions). What is the LOO CV error??
Note: Use
tuneGrid = data.frame(fL = 0, adjust = 1, usekernel = FALSE)
The Sonar dataset from the mlbench
package contains information about sonar signals. You need to solve the
problem of recognizing the surface (Class) from which the sonar signal
bounced. Estimate the classification error of the QDA method using the
resubstitution and CV LOO methods. Make a confusion matrix.
The Glass dataset from the mlbench
package contains information about 214 observation containing examples
of the chemical analysis of 7 different types of glass. Construct a KNN
model for parameters k = 1:3. What is the resubstitution error and LOO
CV error. Make a confusion matrix.
The Vehicle dataset from the mlbench
package contains 846 observations, 18 features, and 4 classes. We want
to classify the vehicle silhouette. Construct a classification tree in
which the variable Type depends on the rest of the variables. What is
the resubstitution error and LOO CV error. Create a plot using the
fancyRpartPlot() function from the rattle
package.
Load the dataset. The dataset is about heart disease in South Africa. Determine the resubstitution error and LOO CV for the LDA method.