NEWS

editrules 2.9.0 (2015-06-11)

some updates on the NAMESPACE to comply to new CRAN policies.
bugfix: MIP method for error localisation ignored time constraint
bugfix: edge case in c.editmatrix for empty edit matrices.
bugfix: editfile w/type='num' would crash on empty file input.
bugfix in as.igraph methods for editmatrix, editarray, editset
bugfix: edge case in substValue methods
bugfix: contains.editmatrix crashed on editmatrix containing 0 variables
bugfix: user-defined M was ignored in MIP version of error localizer.
mixed typed edits now have naming convention used in paper
added SOS1 type edits for categorical constraint. Should improve mip performance.
editset subsetting now support negative row index
printing an empty cateditmatrix doesn't fail anymore
fix a bug in parsing a mix edit with no numeric constraint in the premisse (thanks to Alois Haslinger)

editrules 2.7.2 (2013-07-03)

Suggest-dependency on iterators removed
now depends on lpSolveAPI (instead of suggests)
small documentation changes to comply to new CRAN policy
bugfix in summary.violatedEdits: would crash on NA's
Concatenating editmatrix, editset and editset now keep their rownames
Simplified mip implementation
fixed a bug, empty levels are now allowed in editarray. Thanks to kforner

editrules 2.7-1

bugfix: summary.violatedEdits crashed when no edits were violated.
Branch and Bound method now bounds (instead of crashes) when memory allocation for variable elimination fails
The 'status' of errorLocation object gains column indicating whether the memory allocation failure was hit as bound condition
localizeErrors gains 'retrieve' argument, controling which solution to return: the best or the first encountered.
changed method parameter of localizeErrors into "bb" or "mip" ("localizer" is deprecated).

editrules 2.7-0

bugfix: numeric edits now include constants assigned in editfile (thanks to Jeroen Pannekoek)
BREAKING CHANGE: first argument in as.igraph is now called 'x' to comply with new generic from igraph package
bugfix in contains.editset: in some cases not all edits were found
contains now gives more meaningfull error msg when nonexistent variable names are passed
bugfix: brackets inside mixed edits were not parsed: if ((x>0 && y>0)) z < 0
changed dependency on igraph0 into igraph
getVars method for editarray now returns NULL when type argument is not 'cat' (the default). Thanks to Elmar Wein.
print methods for editmatrix and editarray gain textOnly argument (default is FALSE for backward compatibility)
bugfix in parseMix: mixed edits containing an numeric equality constraint now generate an error (which is correct, since equality constraints in mixed edits are not supported.)
bugfix in summary.violatedEdits, the "edit" column showing the violated edit was incorrect (the method itself was correct though), thanks to Francesca Pogelli for reporting that error
bugfix in weight calculation: weight of variables exceeding range edits was counted twice
errorLocalizer.editarray gains 'tol' argument for feasibility checks
records with large maximum absolute value now pre-scaled when localizing errors with MIP
bugfix in as.character.editarray: failure when edit excludes subset of datamodel
bugfix in substValue.editset (processing of dummy variables failed in certain cases)
exported nedits

editrules 2.5-0 (2012-06-05)

discussion papers are no longer vignettes, but included in inst/doc.
complete documentation overhaul
overloaded 'c' for editset
localizeErrors uses vectorized method for single-variable, single-edit blocks ('singleton' method)
error localization based on lpSolveApi uses block-wise processing for enhanced numerical stability
function editType exported: lists edit categorie for 'editset' ('num', 'cat', 'mix')
duplicated dummyvariables in an editset are removed (making 'disjunct' much more efficient)
localizeErrors for conditional restrictions (editset)
errorLocalizer.-functions now accept a named list as records (as well as named vector)
Option 'useBlocks' in function 'localizeErrors' is now ignored (always TRUE) and will be removed
errorLocalizer (b&b) for conditional restrictions (editlist/editset)
isObviouslyInfeasible for editlist/editenv/editset
bugfix in localizeErrors: logical columns caused crashes when both TRUE and FALSE present
bugfix in violatedEdits.editarray: crashed when 0 columns were present (Thanks to Elmar Wein)
bugfix en parser: editset() crashed at numberless mixed expressions as 'if (A=="a") x > y
bugfix in violatedEdits.editset: wrong handling of numerical edits.
Better printing of cateditmatrix.
BREAKING CHANGE: listViolatededits and checkRows are deprecated. Use violatedEdits in stead.
BREAKING CHANGE: violatedEdits.data.frame, toDataFrame and iter.backtracker are now editrules internal and no longer supported
BREAKING CHANGE: argument fancynames of eliminate.editmatrix is removed

editrules 2.2-0 (2012-02-23)

Added function 'disjunct' decoupling conditional numeric/categorical edit sets
removed deprecated functions 'eliminateFM' and 'editrules'
Fixed two corner case bugs in localizeErrors with method="mip"
bugfix in duplicated.editmatrix
fix in documentation of plot.editset
bugfix in localizeErrors.editmatrix causing error when a value doesn't conform to datamodel (Thanks to Elmar Wein)

editrules 2.1-2 (2012-02-08)

removed some unnecessary files from inst/doc
added function generateEdits: derive all nonredundant essentialy new categorical edits.
editfile reads categorical, numerical and mixed edits.
violatedEdits works for objects of class editset.
BREAKING CHANGE: function 'editrules' is obsolete. Use as.data.frame or as.editmatrix.
added as.character, print method for editset.
as.data.frame.editmatrix and .editarray now only return 'description' column if input has description attribute.
edits in editmatrix and editarray are now printed with prefix 'num' and 'cat', in stead of 'e', datamodel gets prefix 'dat'
added nedits function counting the number of edits in an editmatrix -array or -set
added blockIndex function
is.editset, getVars, blocks, reduce and row indexing ([) for editset objects
violatedEdits, summary, echelon, as.data.frame, plot, as.igraph, adjacency for editset objects
simpler internal representation for editset
substValue.editmatrix gains argument removeredundant (default:TRUE) indicating wether or not to remove redundant rows.
added substValue.editset

editrules 2.0-3 (2012-01-12)

new generic function checkDatamodel: checks data agains datamodel implied by editarray
bugfix in localizeErrors: crashed when reduce() (used in blocks) removes variables in editarray (thanks to Bikram Maharjan)
internally, eliminate.editarray performs extra edit redundancy checks
fixed cornercase in '[.editarray'. Now correctly handles empty character ("") as category name.
added numcat function, returns number of categories for each variable in an editarray

editrules 2.0-2

NOTE: 2.0-2 is not a CRAN release
includes *BETA* version of mixed edit parsing
includes *BETA* version of error localiztion as MIP problem (option method='mip' in localizeErrors)
eliminate.editarray gained speed in certain cases
fixed cornercase in editarray: empty category value gave new variable
New function editfile reads edits and domain definitions from text file
editarray gains env (environment) argument
editarray and editmatrix now handle zero-length arguments

editrules 2.0-1 (2011-12-08)

bugfix in isSubset.editarray
buxfix in localizeErrors: maxduration was previously ignored (thanks to Francesca Pogelli and Teresa Buglielli of ISTAT)
buxfix in parseEdits: non constant parsing was not detected. It is now also possible to use x*100 (thanks to Francesca Pogelli and Teresa Buglielli of ISTAT)
bugfix in errorLocalizer: no solution was returned if maxdurationExceeded==TRUE (even if at least 1 solution was found)
bugfix in summary.errorLocation: could not handle NA in status fields

editrules 2.0-0 (2011-11-30)

Final version of vignette.
Function 'contains' now S3 generic and overloaded for editmatrix object.
BREAKING CHANGE. as.data.frame.editmatrix is now symmetrical with as.data.frame.editarray. Use toDataFrame for old behaviour.
str overloaded for objects of class editarray (gives output similar to str.editmatrix)

editrules 1.9-0 (2011-11-17)

Parser for categorical edits accepts edits in the form "if ( <set expression> ) FALSE"
Parser for categorical edits accepts '&' as well as '&&'
Corner case in reduce.editmatrix: now handles empty inputmatrices.
substValue.editarray now works for boolean values
Parser for all edits accepts expression vector

editrules 1.8-1 (2011-10-27)

fixed a corner case bug for deducorrect

editrules 1.8-0 (2011-10-23)

violatedEdits.editmatrix more robust against NA's in records
plot method for arguments of class errorLocation, violatedEdits
errorLocalizer now throws error when edit set contains variables not encountered in record.
solved edge case in error localizer. $adapt would be NA if all variables were NA (now TRUE)
bugfix in violatedEdits.editmatrix (inequalities were checked incorrectly)
bugfix in edge case of 'contains' (nonuniform output if editarray has only one rule)
summary method for arguments of class editmatrix, editarray, errorLocation
localizeErrors now accepts an array of weights so weights can be set per record
localizeErrors gains arguments 'useBlocks' (default: TRUE) and 'verbose' (default: FALSE).
variable and edge nodes can be colored in plot.editmatrix or plot.editarray.

editrules 1.7-0 (2011-10-12)

several improvements in parsing categorical edit rules in the presence of & and | operators.
solved a bug in violatedEdits causing inequality violations to go unnoticed (since version 1.5.0, thanks to Elmar Wein)
substValue.editarray now works for multiple variables
Introduced the special FALSE edit (indicating that the set of valid records is empty)
editarray now emits error when the | or || operator is used in conjuncion with an 'if' statement.
Solved inconsistent parsing character->editmatrix->character in case a (derived) edit reduces the datamodel
Solved bug in blocks (constants were ignored for obects of class editmatrix)
Output of errorLocalizer.editarray is now equivalent to errorLocalizer.editmatrix
isFeasible tested for objects of class editarray (works)
blocks now also works for objects of class editarray
overloaded indexing for objects of class editarray
added function 'reduce' which deletes unnecessary variables and rows from editarray or edimatrix
BREAKING CHANGE argument 'remove' is replaced with reduce for clarity
NOTE: Default value for argument 'warn' in isFeasible is now set to TRUE
NOTE: Default value for argument 'remove' in substValue.editarray is now set to FALSE

editrules 1.6-0 (2011-10-06)

Added functionality for plotting edit graphs directly from edit sets
Added functionality for deriving igraph objects directly from edit sets
Added functionality for deriving adjacency matrices for edit sets
Package now suggests igraph package for graphical analysis of edit sets
Fixed bug causing wrong error localization or crash when weights are used. (Thanks to Kenneth Chin-A-Fat)

editrules 1.5-2 (2011-09-26)

Fixed column matching bug in violatedEdits.editarray

editrules 1.5-1 (2011-09-25)

Fixed a bug in violatedEdits.editmatrix which caused deducorrect correctTypos to fail (Thanks to Brian Ripley for contacting us)

editrules 1.5-0 (2011-09-24)

BETA FUNCTIONALITY: Error localization, variable elimination etc. for categorical variables.
new function localizeErrors(E,dat) processes whole dataset with $searchBest() (needs more testing).
errorLocalizer throws error at invalid weights (thanks to Kenneth Chin-A-Fat).
Argument maxweight was ignored by errorLocalizer.editmatrix, now works.
violatedEdits has better (more clear) output.

editrules 1.0-2 (2011-08-10)

solved bug in as.character.editmatrix (thanks to Sander Scholtus)

editrules 1.0-1 (2011-08-09)

solved edge case in $searchBest() method of errorLocalizer (thanks to Sander Scholtus)

editrules 1.0-0 (2011-08-01)

Formal upgrade only.

editrules 0.9-1

errorLocalizer now robust when variables occur in record and not in editmatrix.

editrules 0.9-0 (2011-07-23)

Performance gain by improved bounding condition in backtracking object returned by errorLocalizer
functions getH and geth for objects of class editmatrix added.
removed bug from $searchBest(), a sole solution wasn't returned.
backtracker$searchNext() and $searchAll() gain maxduration argument
BREAKING CHANGE: function findBlocks replaced by blocks. finblocks now emits warning, will become error in next release
Solved bug causing eliminateFM to return spurious but harmless edits in edge case, thanks to Sander Scholtus
Backtracker gains maxdepth and maxduration parameter
errorLocalizer gains maxduration, maxadapt and maxweight parameter
removed deprecated functions cp.editmatrix, replaceValue

editrules 0.8-0

removed deprecated functions getC. getMatrix from source
deprecated functions cp.editmatrix, replaceValue now emit error
added index to vignette
solved corner case error in error localizer
BREAKING CHANGE: renamed choicepoint into backtracker
cp object generated by errorLocalizer does not return final editmatrix anymore (useless).
solved a bug causing isObviouslyInfeasible to miss certain cases
substValue can now replace multiple values at once.
'[.editmatrix' now retains derivation history (previously lost in substValue operations)
removed a bug from echelon.editmatrix, it failed when no operation was possible.

editrules 0.7-1 (2011-06-29)

made as.errormatrix a bit more robust and solved a cornercase
fixed bug in editmatrix causing crashes in cornercase when "description" column of input is empty.

editrules 0.7 (2011-06-25)

errorLocalizer gains searchBest() function, returns random solution in case of degeneracy
added as.character coercions in editmatrix to solve crash
BREAKING CHANGE: replaceValues renamed to substValues. Currently warns, will emit error in next release.
BREAKING CHANGE: cp.editmatrix renamed to errorLocalizer and now S3 generic. Currently warns, will emit error in next release.
getC and getMatrix are deprecated and now emit errors.
Vignette ready for review
solved bug in documentation of cp.editmatrix
solved bug in str.editmatrix
isObviouslyRedundant now finds duplicate rows within tolerance.
overloaded built-in function "duplicated" for editmatrix.
Added full feasibility check for editmatrix: isFeasible
removed bug from findBlocks and exported.

editrules 0.6 (2011-05-11)

Edit rule coercions: as.expression as.character as.editmatrix as.data.frame
Transform equality restrictions to reduced row echelon form
Obvious (in)feasibility and redundancy checks for linear edit rules
The following functions are deprecated, and give a warning: getC, getMatrix (warnings will become errors in the next release).
Added cp.editmatrix which solves error localization under generalized Fellegi-Holt paradigm
Added choicepoint algorithm for generic binary search
Option normalize=TRUE for editmatrix is now the default
Overloaded str function for editmatrix object
Added fully vectorized Fourier-Motzkin elimination function with redundancy removal
Added a normalize function
Exported and documented replaceValue
rewrote internal representation of editmatrix, it is now an augemented matrix (A|b)
BREAKING CHANGE: clean up of notation/syntax/naming convention: constants are named b, coefficients are named A

editrules 0.5 (2011-04-01)

fixed breakage at single record input of violatedEdits
added findBlocks, break up a matrix in its constituing blocks

editrules 0.4-1 (2011-03-12)

long edit rules (> 60 characters) failed, the upper limit for editrules is right now 500
added row subscript operator for object of class editmatrix
added getMatrix, same functionality as as.matrix, but more symetric with respect to getOps, getC and getVars

editrules 0.4 (2011-02-26)

improved expression parsing
improved handling of wrong input for method editmatrix
improved handling of extra columns in editrules
added as.data.frame.editmatrix
negative coefficients and constants were not parsed correctly
added vignette
removed deprecated editsinfo parameter from editmatrix
added getOps and getCONSTANT functions for retrieving operators and constants from an editmatrix
checkRows is now S3 generic and overloaded for character, data.frame and editmatrix
added simplification of constraints (coefficients will be summed)
renamed errormatrix into violatedEdits

editrules 0.2 (2011-02-08)

added CONSTANT parsing and generation
simplified editmatrix by removing one parameter (accepting both types of input)
renamed editsinfo to more understandable editrules
removed documentation of internal "edits" function

editrules 0.1-1 (2011-01-31)

added an as.matrix function
improved editmatrix example