Laten we zien wat er in het mandje zit

Market Basket-analyse in R

Christopher Bruffaerts

Statistician

Items visualiseren

TID	Transactie
1	{Bread, Butter, Cheese, Wine}
2	{Bread, Butter, Wine}
3	{Bread, Butter}
4	{Butter, Cheese, Wine}
5	{Butter, Cheese}
6	{Cheese, Wine}
7	{Butter, Wine}

Itemfrequentieplot

freq_basic_abs

Items visualiseren in R

Absoluut type

itemFrequencyPlot(data_trx, 
                  main='Absolute Item Frequency Plot',
                  type="absolute"
)

Relatief type

itemFrequencyPlot(data_trx,
                  main='Relative Item Frequency Plot',
                  type="relative"
)

freq_basic_abs

item_freq_basic

Topitems

Herschikken en filteren met topN

itemFrequencyPlot(
  data_trx,
  topN = 4,
  main = 'Absolute Item Frequency Plot',
  type = "absolute"
)

item_freq_abs_top

Verder aanpassen

Draai en pas de plot aan

itemFrequencyPlot(
  data_trx,
  topN = 4,
  main = 'Absolute Item Frequency Plot',
  type = "absolute",
  col = rainbow(4),
  ylab = "",
  cex.names = 1.2,
  horiz = TRUE
)

item_freq_basic_top_col

Laten we items plotten!

Market Basket-analyse in R