Program to Perform Principal Component Analysis (PCA) - Statistics Assignment Help

Assignment Task:

Task:

Problem Description:

Program to perform Principal component analysis (PCA) on the dataset in R PROGRAM: a. Implement PCA on IRIS Dataset. Also compare our results by calculating eigenvectors and eigenvalues separately # Taking the numeric part of the IRIS data data_iris <- iris[1:4]

# Calculating the covariance matrix Cov_data <- cov(data_iris )

# Find out the eigenvectors and eigenvalues using the covariance matrix Eigen_data <- eigen(Cov_data) # Using the inbuilt function PCA_data <- princomp(data_iris ,cor="False")

# Let’s now compare the output variances Eigen_data$values PCA_data$sdev^2

# Compare the eigenvectors of both models. PCA_data$loadings[,1:4] Eigen_data$vectors summary(PCA_data) biplot (PCA_data) screeplot(PCA_data, type="lines")

# Fit two naive Bayes models. one over the entire data. The second on the first principal component. We will calculate the difference in accuracy between these two models. Building two models. #Select the first principal component for the second model model2 = PCA_data$loadings[,1] #For the second model, we need to calculate scores by multiplying our loadings with the data model2_scores <- as.matrix(data_iris) %*% model2

#Loading libraries for naiveBayes model library(class) library(e1071)

#Fitting the first model over the entire data mod1<-naiveBayes(iris[,1:4], iris[,5])

The above  Statistics Assignment has been solved by our  Statistics Assignment  Experts at My Uni Paper. Our Assignment Writing Experts are efficient to provide a fresh solution to this question. We are serving more than 10000+ Students in Australia, UK & US by helping them to score HD in their academics. Our experts are well trained to follow all marking rubrics & referencing style.

Be it a used or new solution, the quality of the work submitted by our assignment experts remains unhampered. You may continue to expect the same or even better quality with the used and new assignment solution files respectively. There’s one thing to be noticed that you could choose one between the two and acquire an HD either way. You could choose a new assignment solution file to get yourself an exclusive, plagiarism (with free Turnitin file), expert quality assignment or order an old solution file that was considered worthy of the highest distinction.