Background

DriveML is a series of functions sucha as AutoDataPrep, AutoMAR, autoMLmodel. DriveML automates some of the most difficult machine learning functions such as data exploratory analysis, data cleaning, data tranformations, feature engineering, model training, model validation, model tuning and model selection.

Functionalities of DriveML

DriveML R package has four unique functionalities

1. Data Exploration
   • SmartEDA has a complete exploratory data analysis function
2. Data preparations
   • AutoDataPrep function to generate a novel features based on the functional understanding of the dataset
3. Machine learning models
   • autoMLmodel function to develope baseline machine learning models using regression and tree based classfication techniques
4. Model report
   • autoMLReport function to print the machine learning model outcome in HTML format

Installation

The package can be installed directly from CRAN.

install.packages("DriveML")

Example

Data

In this vignette, we will be using Heart Disease - Classifications data set

Data Source kaggle.

    install.packages("DriveML")
    install.packages("SmartEDA")
    library("DriveML")
    library("SmartEDA")
    ## Load heart desease dataset 
    heart <- DriveML::heart
    

Overview of the data

Understanding the dimensions of the dataset, variable names, overall missing summary and data types of each variables

## overview of the data; 
    ExpData(data = heart, type = 1)
## structure of the data    
    ExpData(data = heart, type = 2)

Summary of numerical variables

To summarise the numeric variables, you can use following r codes from this pacakge

## Summary statistics by – overall
    ExpNumStat(heart, by = "GA", gp = "target_var", Qnt = seq(0, 1, 0.1), MesofShape = 2, Outlier = TRUE, round = 2)

Graphical representation of all numeric features

## Generate Boxplot by category
ExpNumViz(heart, gp = "target_var", type = 2, nlim = 25, Page = c(2, 2))

## Generate Density plot
ExpNumViz(heart, gp = NULL, type = 3, nlim = 10, Page = c(2, 2))

## Generate Scatter plot
ExpNumViz(heart, target="target_var", nlim = 4, scatter = TRUE, Page=c(2, 1))

Machine learning model using 3 simple steps

Data preparation using autoDataprep function

Single function to prepare end to end data preparation for machine learning models

# Data Preparation
small_data <- autoDataprep(heart, target = "target_var", missimpute = "default",
                       auto_mar = TRUE, mar_object = NULL, dummyvar = TRUE,
                       char_var_limit = 12, aucv = 0.02, corr = 0.99,
                       outlier_flag = TRUE, interaction_var = TRUE,
                       frequent_var = TRUE, uid = NULL, onlykeep = NULL, drop = NULL)

# Print output on R console
printautoDataprep(small_data)

# Final prepared master data

small_data_t <- small_data$master_data

Machine learning classification model using autoMLmodel function

Single function to develope six different types of machine learning binary classification models with the help of hyperparameter tuining using random search

# DriveML Model development
small_ml_random <- autoMLmodel(small_data_t,  target = "target_var",  testSplit = 0.2,
                      tuneIters = 100,  tuneType = "random",
                      models = "all", varImp = 20,  liftGroup = 10,  maxObs = 10000,  uid = NULL,
                      pdp = T, positive = 1, htmlreport = FALSE, seed = 1991)

# Model summary results
small_ml_random$results

Present model report using autoMLReport function

Generate a report in html format for the output of autoDataprep and autoMLmodel DriveML fucntions. Alos autoMLReport is an inbuilt function under autoMLmodel.

autoMLReport(mlobject = small_ml_random, mldata = small_data, op_file = "driveML_ouput_heart_data.html")

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