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Introduce a margin in the dataset

Your final task for Chapter 1 is to create a margin in the dataset that you generated in the previous exercise and then display the margin in a plot. The ggplot2 library has been preloaded for you. Recall that the slope of the linear decision boundary you created in the previous exercise is 1.4.

Это упражнение является частью курса

Support Vector Machines in R

Посмотреть курс

Инструкции к упражнению

  • Introduce a margin delta of 0.07 units in your dataset.
  • Replot the dataset, displaying the margin boundaries as dashed lines and the decision boundary as a solid line.

Интерактивное практическое упражнение

Попробуйте выполнить это упражнение, дополнив этот пример кода.

#set margin
delta <- ___

# retain only those points that lie outside the margin
df1 <- df[abs(1.4*df$x1 - df$x2) > delta, ]

#build plot
plot_margins <- ggplot(data = df1, aes(x = x1, y = x2, color = y)) + geom_point() + 
    scale_color_manual(values = c("red", "blue")) + 
    geom_abline(slope = ___, intercept = 0)+
    geom_abline(slope = ___, intercept = ___, linetype = "dashed") +
    geom_abline(slope = ___, intercept = ___, linetype = "dashed")
 
#display plot 
plot_margins
Редактировать и запускать код