arules_1.7-9

arules 1.7-9 (12/14/2024)

Internal Changes

• C code: Legacy variable length arrays in structs use now C99 syntax so
  that UBSAN's static analysis does not report a non-existing
  out-of-bounds violation.

arules 1.7-8 (08/21/2024)

Changes

• Updated tests for testthat edition 3.

Internal Changes

• Disable internal ngCMatrix subsetting code which has issues with R-devel.
  We use now subsetting provided by package Matrix which is almost as fast.
• Disable internal code for rowSums and colSums for ngCMatrix.
• Internal code for t for ngCMatrix is now only used internally.
• The custom code and the exported symbols are now deprecated and will be
  removed in the next major release.

Bugfixes

• Fixed 'Error in .basicRuleMeasure(..) unused argument
  (complement = TRUE)' reported by bachnguyen-tomo.
• Added package anchors in man pages for ngCMatrix-class.

arules 1.7-7 (11/28/2023)

Changes

• is.significant gained parameter reuse. The default for adjust was changed
  to "none."
• improved some error messages.
• Added Wikipedia links to measures.md.
• Added interest measure LIC.

Bugfixes

• Fixed appearance code for fim4r (reported by mytarmail).

arules_1.7-6

arules 1.7-6 (03/23/2023)

Changes

• Improved the interface for fim4r. support and confidence now uses [0, 1]; added verbose
  and origialSupport.

Bugfixes

• eclat and apriori now use the next smaller representable double for minsupp to make sure that >= minsupp works.

arules 1.7-5 (10/20/2022)

Bugfixes

• discretize(): dig.lab is now correctly passed on to cut() (reported by LectronPusher).
• Fixed C prototype warnings

arules_1.7-4

arules 1.7-4 (8/16/2022)

Changes

• We install now the latest version of fim4r
• Changes in coercion for Matrix 1.4-2

Bugfix

• eclat() now correctly returns frequent itemsets when all have exactly minsupport (reported by GauthierMagnin).

arules_1.7-3

Changes

• Manual pages are now created using roxygen2.
• support() uses now explicit arguments instead of control.
• ruleInduction() uses now explicit arguments instead of control.

New Feature

• Added interface to fim4r algorithms.

arules

Bugfixes

• Fixed some C issues: unsigned int in bitmat.c (function static int _exists) to ensure bit shifting works. The bitmap support buffer is now initialized with zeros.

arules_1.7-0

arules 1.7-0 (11/12/2021)

New Feature

• Constructors and conversion

  • constructor transactions() can now also create transactions from data in long format (tid, item).
  • rules and itemsets have now a constructor.
  • toLongFormat converts transactions into a long format data.frame.

• Interest measures

  • interestMeasure for rules has now measure "table" which returns the contingency table.
  • new interest measure "riskRatio" was added.
  • interestMeasure for contingency table-based measures now accept the additional parameter smoothCounts
    which is added to each count to avoid counts of zero (Laplace smoothing).
  • new method for stats confint to calculate confidence intervals for some interest measures added.
  • is_redundant can now also use confidence intervals to determine statistical redundancy.
  • removed option "chiSquared" from crossTable.

• Mining algorithms

  • apriori and eclat gain ... additional arguments are now added to the parameter list.
  • added new function is.generators to find itemset generators.
  • apriori and eclat now store the call in the info slot of the created associations.

Changes

• we use now a better check for installed suggested packages.
• inspect uses now a space after the comma.
• interestMeasures: reuse = TRUE now only reuses the basic measures of "support", "confidence", "coverage" and
  "lift". All other measures are recalculated to account for possible differences in additional parameters.
• set methods are now also exported as S3 methods using package generics so they do not conflict with tidyverse (dplyr).

Bug Fixes

• fixed mistake in the man page for weclat. The weight column needs to be called weight (reported by Alexander Ruth).
• frequent itemsets now do not report "transIdenticalToItemsets" (reported by galadrielbriere).
• fixed read.transactions reading in single format with a header from a connection. The first item is no longer dropped.

arules_1.6-8

New Feature

• transactions have now a constructor function called transactions().
• Added new method compatible() to itemMatrix to check if the item coding is compatible
  between two objects.
• c() now produces a warning if two itemMatrices with different itemCoding are combined.
• encode and recode accept now for itemLabels also objects with an itemLabels method.
• recode is now also available for associations (itemsets and rules).

Changes

• recode: parameter match is now deprecated. Use itemLabels

Bug Fixes

• fixed addAggregate problem with character (reported by javiercoh).

arules_1.6-7

New Features

• Added interest measure confidence boost (boost) with help from Jens Harbers, Cordes & Graefe KG.

Bug Fixes

• interest measure improvement now does not produce inf values if no subset rule can be found.

arules_1.6-6

New Features

• added interestMeasure rhsSupport.
• added interestMeasure stdLift.
• addComplement now adds variables and levels to indicate what items are complments.

Changes

• apriori and eclat now by default also reports coverage (ext defaults to TRUE and lhs.support is now called coverage).
• addComplement now adds variables and levels itemInfo.
• discretize now drops non-unique breaks with a warning (instead of producing an error).

Bug Fixes

• DATAFRAME now works if itemsetInfo is empty.
• interestMeasure hyperlift now works without specifying transactions.
• Changed c() to as.integer() for factors (R has changed).

arules_1.6-5

New Features

• improved speed for calculating interestMeasures for rules and itemsets with no available
  quality information or reuse = FALSE.
• Manual pages for associations were improved with examples for itemCoding.
• MAnual page for interestMeasures is now linked with the associated web page.
• interest measure laplace (Laplace confidence) gained parameter k for the number of classes.

Bug Fixes

• read.transactions: Parameter encoding is now correctly passed on to scan (reported by Sisi-Wiciel).
• interestMeasure was not calculating count for itemsets (reported by clcazer).
• removed the duplicated interest measure: "descriptiveConfirm" use "confirmedConfidence" instead.