arules_1.4-1

Changes in version 1.4-1 (04/10/2016)

• added tail method for associations.
• added/fixed encoding for read.transactions
• Bugfix for interestMeasure. Mutual information is now calculated correctly
  (reported by ddessommes).

arules_1.4-0

Changes in version 1-4-0 (03/18/2016)

• The transaction class lost slot transactionInfo (we use the
  itemsetInfo slot now). Note that you may have to rebuild some
  transaction sets if you are using transactionInfo.
• Bugfix for combining item matrices with 0 rows (reported by C. Buchta)
• Bugfix for itemLabel recoding in is.subset (reported by sjain777).
• Bugfix for NAMESPACE export for %in%
• is.redundant: fixed and performance improvement.
• interestMeasure: performance improvement for "improvement" measure.
• sort: speed up sort by always sorting NAs last.
• head: added method head for associations for getting the best rules
  according to an interest measure faster than sorting all the
  associations first.
• Groceries: fixed typo in dataset.
• abbreviate is now a S4 generic with S4 methods.

arules_1.3-1

• we now require R 2.3.0 so cbind in Matrix works.
• is.maximal is now also available for rules.
• added is.significant for rules (uses Fishers exact test with correction).
• added is.redundant for rules.
• added support for multi-level analysis (aggregate).
• APparameter: confidence shows now NA for frequent itemsets.