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Statistics and Machine Learning R scripts

Misc Machine Learning and statistical analysis code examples in R

Packages used/demonstrated

• caret
• rattle
• randomForest
• rpart
• dplyr
• ggplot2
• corrplot
• factoextra
• glmnet
• MASS
• mgcv
• ... and some more...

Supervised learning (Regression and Classification)

• Linear regression
• Poisson regression
• Stepwise selection method
• LASSO, Ridge, and Elastic Net regularization methods
• Residual analysis
• Spline regression
• Logistic regression
• Support vector machine
• k-Nearest Neighbor
• Decision Tree
• Random Forest
• Feedforward neural network

Unsupervised learning

• k-means Clustering
• Principal Component Analysis (PCA)

Statistics/Data wrangling

• Missing data imputation
• Demo of Central Limit Theorem'
• Outlier detection using Grubb's test
• Cumulative Sum (CUSUM) for change detection
• Demo of Hypothesis shopping (why you should be suspicious of p-Values)