October 2017
Beginner to intermediate
572 pages
26h 1m
English
book
Machine Learning with R Cookbook - Second Edition
by AshishSingh Bhatia, Yu-Wei, Chiu (David Chiu)
Content preview from Machine Learning with R Cookbook - Second Edition
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How to do it...
Perform the following steps to display transactions and associations:
- First, you can obtain a LIST representation of the transaction data:
> LIST(trans)
Output
$Tr1
[1] "Apple" "Bread" "Cake"
$Tr2
[1] "Apple" "Bread" "Milk"
$Tr3
[1] "Bread" "Cake" "Milk"
- Next, you can use the summary function to show a summary of the statistics and details of the transactions:
> summary(trans) Output transactions as itemMatrix in sparse format with 3 rows (elements/itemsets/transactions) and 4 columns (items) and a density of 0.75 most frequent items: Bread Apple Cake Milk (Other) 3 2 2 2 0 element (itemset/transaction) length distribution: sizes 3 3 Min. 1st Qu. Median Mean 3rd Qu. Max. 3 3 3 3 3 3 includes extended item information ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.