Changes in version 1-3-1 (12/13/2015)
* 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.
Changes in version 1-3-0 (11/11/2015)
* removed deprecated WRITE and SORT functions.
* ruleInduction: bug fix for missing confidence values and better checking
(by C. Buchta).
* subset extraction: added checks, handles now NAs and recycles for logical.
* read.transactions gained arguments skip and quote and some defaults for
read and write (uses now quotes and no rownames by default) have changed.
* itemMatrix: coersion from matrix checks now for 0-1 matrix with a warning.
* APRIORI and ECLAT report now absolute minimum support.
* APRIORI: out-of-memory while rule building does now result in an error and
not a memory fault.
* aggregate uses now 'by' instead of 'itemLabels' to conform to
aggregate in base.
Changes in version 1-2-1 (09/20/2015)
* Added many new interest measures.
* interestMeasure: the formal argument method is now called measure
(method is now deprecated).
* Added Mushroom dataset.
* Moved abbreviate from arulesViz to arules.
* fixed undefined behavior for left shift in reclat.c
(reported by B. Ripley)
Changes in version 1-2-0 (09/14/2015)
* added support for weighted association rule mining (by C. Buchta):
- transactions can store weights a column called "weight" in
transactionInfo.
- support, itemFrequency and itemFrequencyPlot gained a parameter
called weighted.
- weclat extends eclat with transaction weights.
- hits can be used to calculate weights from transact ions.
* sort can now sort by several columns (used to break ties) in quality.
It also gained an order parameter to return a permutation vector
(order) instead.
* inspect gained parameters setStart, setEnd, itemSep, ruleSep and
linebreak to control output better.
* read.transactions now ignores empty items (e.g., caused by trailing
commas and leading or trailing white spaces).
* labels now returns not a list but consistent labels for objects
(transactions, itemMatrix, rules, itemsets, and tidLists).
* tidLists has now an inspect method, gained coercion from "list", and
has now a replacement method for dimnames().
* Coercion from itemMatrix to matrix results now in a logical matrix.
* fixed as(transactions, "data.frame"). The column names do now have
no prefix (except if transactionInfo contains an item called "items").
* transactions has now its own dimnames function which correctly returns
transactionID from transactionInfo as rownames.
* fixed missing row labels for is.subset().
* replacement method for dimnames() checks now dimensions.
* item labels are now internally handled as character using
stringAsFactor = FALSE in data.frames and not AsIs with I(character).
* rules can now have no item in the RHS.
* We are transitioning to internally use consistently data.frames
with the correct number of rows for quality, itemInfo,
transactionInfo and itemsetInfo. These data.frames possibly have
0 columns.
* arules uses now testthat (tests are in tests/testthat).
Changes in version 1.1-9 (7/13/2015)
* More work on namespace.
* Fixed tests.
Changes in version 1.1-7 (6/29/2015)
* itemUnion: fixed bug for large amounts of dense rules.
* crossTable gained arguments measure and sort.
* Fixed namespace imports for non-base default packages.
Changes in version 1.1-6 (12/07/2014)
* dissimilarity method "pearson" is now set to 1 (max) for neg.
correlation. Also added phi correlation coefficient.
* discretize method "cluster" accepts now ... passed on to k-means
(e.g., for nstart)
* merge for itemMatrix checks now for conformity
* as(..., "transactions"): binary attributes are now translated into items
only if TRUE.
Changes in version 1.1-5 (8/19/2014)
* Import drop0 from Matrix
Changes in version 1.1-4 (7/25/2014)
* C code: fixed problem in error message generation in apriori and eclat
(this fixes the trio library problem under Windows)
* C code: rapriori uses now STRING_ELT to be compatible with TERR (TIBCO)
* C code: removed some unused variables.
Changes in version 1.1-3 (6/17/2014)
* Fixed dependency on XML and pmml
* the interest measure chi-squared does now also report p-values
(with significance=TRUE)
* interestMeasure calculation checks now better for missing transactions
* interestMeasure consistently returns now NA if not defined for a
certain rule
Changes in version 1.1-2 (2/21/2014)
* discretize gained the parameter ordered.
* itemwise set operations itemUnion, itemSetdiff and itemIntersect added.
* validObject checks now rules more thoroughly
* aggregate removes duplicate items from the lhs
Changes in version 1.1-1 (1/16/2014)
* is.superset/is.subset now makes sure that the two arguments conform using
recode (number and order of items)
* is.superset/is.subset returns now a matrix with appropriate dimnames
* bug fix: fixed dimname bug in as(..., "dgCMatrix") for tidLists
* image: labels are now passed on correctly.
* tidLists has now c().
Changes in version 1.1-0 (12/10/2013)
* bug fix: reuse in now passed on correctly in interestMeasures
(bug reported by Ying Leung)
* direct coercions from and to dgCMatrix is no longer supported use
ngCMatrix instead
* coercion from ngCMatrix to itemMatrix and transactions is now possible
* C code: fixed misaligned address on 64-bit systems
Changes in version 1.0-15 (9/6/2013)
* service release
Changes in version 1.0-14 (5/24/2013)
* discretize handles now NAs correctly
* bug fix in is.subset
Changes in version 1.0-13 (4/7/2013)
* transactions: coercion form data.frame now handles logical automatically.
* discretize replaces categorize and offers several additional methods
Changes in version 1.0-12 (11/28/2012)
* Added read and write for PMML.
* 'WRITE' is now deprecated, use 'write' instead
* C code: Added a copy of the C subscript code from R for
better performance and compatibility with arulesSequences
Changes in version 1.0-11 (11/19/2012)
* Fixed vignette.
* Internal changes for dimnames and subsetting
Changes in version 1.0-9 and 1.0-10 (9/3/2012)
* Added PACKAGE argument to C calls.
* C code: Added C routine symbols to NAMESPACE for arulesSequence
Changes in version 1.0-8 (8/23/2012)
* fixed memory problem in eclat with tidLists=TRUE
* added supportedTransactions()
* is.subset/is.superset can not return a sparse matrix
* added support to categorize continuous variables.
Changes in version 1.0-7 (11/4/2011)
* minor fixes (removed factor in dimnames for itemMatrix, warning in WRITE)
* read.transactions now accepts column names to specify user and item
columns (by F. Leisch)
Changes prior to 1.0-7
* many
Initial stable release version 1.0-0 (3/24/2009)
Alpha and beta versions starting with 0.1-0 (4/15/2005)