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R 中的购物篮分析

Christopher Bruffaerts

Statistician

可视化商品

TID	交易
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}

商品频率图

freq_basic_abs

在 R 中可视化商品

绝对类型

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

相对类型

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

freq_basic_abs

item_freq_basic

高频商品

用 topN 重排与筛选

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

item_freq_abs_top

更多自定义

翻转并自定义图

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

来绘制商品！

R 中的购物篮分析