Plot number of possible baskets
In this exercise, you will visually see how quickly the number of possible baskets grows as a function of the itemset size. This will illustrate one of the main challenges in Market Basket Analysis which is the large number of possible ways of creating a basket. You will be using here the stat_function(); this function allows you to specify within your ggplot() call which function you would like to plot by specifying the argument fun.
Bu egzersiz
Market Basket Analysis in R
kursunun bir parçasıdırUygulamalı interaktif egzersiz
Bu örnek kodu tamamlayarak bu egzersizi bitirin.
# Define number of items in the set
n_items = ___
# Specify the function to be plotted
fun_combi = function(x) choose(___, ___)
# Plot the number of combinations
ggplot(data = data.frame(x = 0), mapping = aes(x = ___)) +
stat_function(fun = ___) + xlim(0,n_items)