NEWS

---

party 1.3-17 (2024-08-17)

• Calloc -> R_Calloc

party 1.3-16 (2024-07-18)

• Fix Rd issues

party 1.3-15 (2024-04-29)

• Fix Rd issues

party 1.3-14 (2023-11-28)

• fix print statement in RandomForest.c

party 1.3-13 (2023-03-17)

• do not create variables in workspace

party 1.3-12 (2023-02-28)

• update CITATION file

party 1.3-11 (2022-10-07)

• fix party_init prototype

party 1.3-10 (2022-04-26)

• proper use of inherits in two instances

party 1.3-9 (2021-09-27)

• #define USE_FC_LEN_T as requested by CRAN 2021-09-25

party 1.3-8 (2021-08-23)

• update reference output

party 1.3-7 (2021-03-03)

• suggest randomForest

party 1.3-6 (2021-02-08)

• fix LaTeX problem
• documentation updates

party 1.3-5 (2020-06-12)

• allow varperm to change in calls to R_get_nodeID (feature request by Dries Debeer)

party 1.3-4 (2020-03-05)

• /bin/sh is portable

party 1.3-3 (2019-03-06)

• make rchk happier

party 1.3-2 (2019-03-01)

• move ExpectCovar and ExpectCovarInfluence classes from coin to party

party 1.3-1 (2018-08-08)

• varimpAUC() now calls varImp::varImpAUC()

party 1.3-0 (2018-04-20)

• New scale argument for predict(cforest, scale = TRUE, ...). For simple regression forests, predicting the conditional mean by nearest neighbor weights with scale = TRUE is now equivalent to the aggregation of means. The unscaled version proposed in <doi:10.1002/sim.1593> can be obtained with scale = FALSE.}

party 1.2-4 (2017-12-13)

• Bonferroni sometimes overcorrected (by taking constant variables into account). Spotted by Heidi Seibold.
• Bugfix for long-standing problem in conditional variable importances by Dries Debeer.

party 1.2-3 (2017-04-12)

• predict(cforest, OOB = TRUE) in party < 1.2-0 was _correct_ and version 1.2-0 to 1.2-2 contained in incorrect "correction". The test set error and the out-of-bag error are now (again) roughly equal. There won't be any correlation between observations and out-of-bag predictions when the response is independent to all explanatory variables. Out-of-bag predictions in package partykit (>= 2.0-0) are now based on the same out-of-bag weights and the results from both packages are roughly equivalent. The issue was first spotted by Julian Karch and later by Andrew Sage.
• comment on false alarms by maacheck / bcheck (email by Tomas Kalibera April 10, 2017) in party/src/*c

party 1.2-2 (2017-02-27)

• free memory in src/Distributions.c (pointed out by Martin Binder)
• register C routines

party 1.2-1 (2017-02-09)

• fix a memory leak occuring while searching for surrogate splits in the process of predicting the terminal node ID
• surrogate splits might have used statistics with slightly incorrect weights
• party::ctree gives _same_ results as partykit::ctree (version >= 2.0-1 from R-forge)

party 1.2-0 (2017-02-06)

• predict(cforest, OOB = TRUE) relied on incorrect weights and gave suboptimal predictions. varimp() was not affected. The effect was pointed out by Julian Karch when comparing party::cforest to partykit::cforest

party 1.1-2 (2016-11-28)

• remove ctree_memory(), also from examples

party 1.1-1 (2016-11-23)

• fix memory leak

party 1.1-0 (2016-11-21)

• don't change values of R objects in C code, this caused problems with byte compiling. ctree_memory() had to be removed in this process.

party 1.0-26

• compare with libcoin instead of coin

party 1.0-25 (2015-11-05)

• remove show from export

party 1.0-24

• initialize, show needed import

party 1.0-23 (2015-08-16)

• update Rout.saves to coin 1.1-0: logrank_trafo now has the same sign for each tie handling method which changes some of the cut-points

party 1.0-22 (2015-07-28)

• NAMESPACE update

party 1.0-21 (2015-06-06)

• reference output updated for recent versions of R

party 1.0-20 (2015-02-18)

• is.na.Surv is now an S3 generic in survival 2.37-7

party 1.0-19 (2014-12-18)

• directly link to mvtnorm and thus make duplication of FORTRAN code obsolate.
• export prettytree (for package mlmeta by Andrew Z)

party 1.0-18 (2014-11-10)

• internal call to svd acummulated memory until the garbage collector was able to clean up (only after the whole forest was grown). Fix by Philip Montgomery <[email protected]>.

party 1.0-17 (2014-09-17)

• move initialize methods of coin classes to coin and re-import them

party 1.0-16 (2014-08-19)

• import("grid")

party 1.0-15 (2014-06-30)

• allow for missing predictor values in new varimp for right-censored responses
• introduce varperm argument to R_get_nodeID

party 1.0-14 (2014-05-30)

• add experimental varimp() for right-censored responses

party 1.0-13 (2014-02-01)

• deal with protection issues in R-devel

party 1.0-12 (2014-01-17)

• mammoexp -> TH.data

party 1.0-11 (2013-12-14)

• deal with empty levels for teststat = "quad" (bug reported by Wei-Yin Loh <[email protected]>)

party 1.0-10 (2013-10-24)

• new demo "strucchange-perm"
• proximity has newdata argument

party 1.0-9 (2013-09-02)

• export initVariableFrame (for usage in RWeka only)
• fix NAMESPACE problems
• data is in TH.data, not ipred anymore

party 1.0-8 (2013-07-11)

• update mvtdist
• documentation update

party 1.0-7 (2013-06-05)

• ctree and cforest ignored the scores argument for the response. Spotted and fixed by Silke Janitza <[email protected]>.

party 1.0-6 (2013-01-09)

• use hist()$density instead of hist()$Intensities as reported by R 3.0.0 to be

party 1.0-5 (2013-01-07)

• fix class problem reported by R 3.0.0 to be

party 1.0-4 (2012-12-19)

• export varimpAUC()
• add where() method for RandomForest class

party 1.0-3 (2012-09-26)

• new function varimpAUC() for AUC-based variable importance measures
• the ‘weights’ argument in cforest() can now be used to define alternative case weights for each of the trees in the forest.

party 1.0-2 (2012-04-26)

• version 1.0-0 introduced a new bug in plotting Kaplan-Meier curves when fixing the weight problem in survfit; the x-axis labels where incorrect. Spotted by Sarah Vowler <[email protected]>.

party 1.0-1 (2012-03-23)

• fix -Werror warnings suggested by Murray Stokely <[email protected]>
• make sure no factor variables are evaluated as surrogate split
• fix confusing warning messages in varimp and check for non-unity weights

party 1.0-0 (2012-02-28)

• varimp can now partially deal with missing values
• Kaplan-Meier curves are now computed _after_ removing zero case weights (see comment in ?survfit); plots may change slightly.
• use cforest_unbiased instead of cforest_control/cforest_classical in examples and regression tests

party 0.9-99996 (2011-12-20)

• don't ship doxygen documentation with package
• ctree() and cforest() don't handle ‘-’ in formulae, warning added to Rd files

party 0.9-99995 (2011-11-02)

• observations with missing values in newdata might not have gone with the majority in predict(ctree, newdata) when no surrogate split was applicable. Spotted and fixed by Vik <[email protected]>.

party 0.9-99994 (2011-08-24)

• reuse classes exported by coin

party 0.9-99993 (2011-07-29)

• attach NAMESPACE properly in tests

party 0.9-99992 (2011-05-02)

• fix partial matching problems

party 0.9-99991 (2010-11-19)

• fix tests/ dependencies

party 0.9-9999 (2010-09-13)

• add update slots to tree and forest objects (later to be used for crossvalidation)

party 0.9-9998 (2010-08-23)

• allow for internal permutations in predict via R_predict2

party 0.9-9997 (2010-07-06)

• update mvt.f (see mvtnorm)

party 0.9-9996 (2010-06-25)

• print progress bar while forest grows (via trace = TRUE in cforest_control())

party 0.9-9995 (2010-05-19)

• assignment of observations based on surrogate splits during fitting might have failed; observations went with majority (in a sub-optimal way)

party 0.9-9994 (2010-04-15)

• varimp() gives warning for non-unity weights
• "no admissible split found" warnings disabled

party 0.9-9993 (2010-03-05)

• just internals needed for mboost

party 0.9-9992 (2010-02-26)

• Bug fix in mob plotting for anova models

party 0.9-9991 (2010-01-27)

• Bug fix in error handling of mob().

party 0.9-999 (2009-09-24)

• minbucket was erronously interpreted as minbucket + 1
• p-values for teststat = "max" were wrong in the uncommon case of zero variances

party 0.9-998 (2009-06-17)

• mtry may vary with tree depth
• finding surrogate variables may have failed, fixed.

party 0.9-997 (2009-06-04)

• documentation fixes

party 0.9-996 (2009-03-27)

• survival fixes

party 0.9-994 (2009-02-11)

• fix bug in new varimp function (which was triggered by splits in categorical variables)

party 0.9-993 (2009-01-29)

• new C-level function R_remove_weights

party 0.9-992 (2009-01-19)

• update CITATION file

party 0.9-991 (2009-01-14)

• new conditional variable importance measure (Strobl et al., 2008, BMC Bioinformatics) available.

party 0.9-99 (2008-10-28)

• a suboptimal split was implemented when the best split corresponded to the last row of data due to a coding error. This should have happend only very rarely, however, the glaucoma example is affected.

party 0.9-98 (2008-10-15)

• don't compute ordering of censored variables (thanks to Brian D. Ripley for the report)
• experimental version of partialPlot for cforests
• teststat = "quad" and testtype = "Univariate" produced wrong criteria in the presence of constant exploratory variables. Spotted by Sebastian Wietzke <[email protected]>

party 0.9-97 (2008-06-27)

• predictions for new data containing missing values were wrong. Bug spotted by Wei-Yin Loh <[email protected]>
• vignette updates

party 0.9-96 (2008-06-08)

• make searching for surrogate splits a little more stable

party 0.9-95 (2008-02-28)

• proximity() now gives _relative_ numbers (similar to ‘randomForest’), not absolute numbers long-standing feature request by Henric Nilsson

party 0.9-94 (2008-01-30)

• documentation updates

party 0.9-93 (2007-11-30)

• It is now an error to ask for more surrogate variables than actually available. Thanks to Henric Nilsson.

party 0.9-92 (2007-11-22)

• predict(<ctree-object>) computed predictions for observations with zero weights (by passing them down the tree). This was already done this way by predict(<cforest-object>) but resulted in an error for ctree()s.
• minbucket added to ctree_control()

party 0.9-91 (2007-09-27)

• bugfix: NAs in factors lead to segfaults on 64bit machines as reported by Carolin Strobl <[email protected]>
• related to this: be more careful when splitting in variables containing missing values, especially factors.
• add examples to regression tests
• new function ‘proximity’ (feature request by Henric Nilsson)

party 0.9-90 (2007-09-24)

• new defaults for ‘control’ argument of ‘cforest’: unbiased forests are now grown by default
• new defaults for binary classification tree visualization: stacked bar charts are used by default.

party 0.9-14 (2007-07-23)

• fix problem in ‘varimp’ introduced by new weights handling

party 0.9-13 (2007-07-23)

• update ‘mvt.f’
• improve the memory footprint of RandomForest objects substancially (by removing the weights slots from each node). More careful revision of the predict and fitting code is needed.
• predictions for cforest with multivariate response are now returned in a matrix (should be a data.frame)
• remove confusing ‘no admissible split found’ warning (which simply meant that the ‘minsplit’ wasn't met).

party 0.9-12 (2007-06-28)

• adjust to coin 0.6-4

party 0.9-11 (2007-06-21)

• populate ‘where’ slot in ‘mob’ objects.
• ‘mob_control’ now has an ‘na.action’ argument
• cforest with replace = FALSE, fraction = ... can now deal with weights (spotted by Carolin Strobl <[email protected]>)
• interface to LAPACK (‘dgesdd’ for computing a SVD) directly. As a side-effect, the svdmem class can be simplified and no memory allocation during tree growing is necessary (which results in a measureable performance gain)

party 0.9-10 (2007-02-28)

• internal infrastructure for fit(x, y) interfaces, including a VariableFrame method for matrices.
• deal with factors with only one level and variables where all observations are NA
• don't compute design matrices in ‘ModelEnvFormula’

party 0.9-9 (2007-02-02)

• internal changes to data objects: joint transformations only necessary for response variables (new class ‘ResponseFrame’) but we need to distinguish between testing (using ranks, for example) and prediction (means of raw data!). Problem spotted by Henric Nilsson <[email protected]>.

party 0.9-8 (2007-01-22)

• thicker median lines in boxplots

party 0.9-7 (2007-01-15)

• fix problems with multivariate response variables (spotted by Henric Nilsson <[email protected]>)

party 0.9-6 (2006-11-28)

• R-2.5.0 does not allow to change the storage.mode of factors

party 0.9-5 (2006-10-27)

• adjusted p values computed with testtype = "MonteCarlo" did not take dimensionality of the underlying linear statistics into account. It is now ensured that _p values_ are resampled, not test statistics.
• fix escape problems

party 0.9-4 (2006-09-15)

• make sure ‘maxsurrogates’ exceeds number of input variables
• fix problems reported by valgrind

party 0.9-3 (2006-09-08)

• don't call RNG functions in mvt (this is done in C code, once)

party 0.9-2 (2006-09-07)

• mob() can't currently handle missing values, they are removed and a warning is given.
• add ‘methods’ and ‘vcd’ to Depends:

party 0.9-0 (2006-08-31)

• node_barplot() can now also draw stacked barplots.
• simplify handling of ordinal variables. It is now possible to have multiple (ordinal) response variables.
• some documentation updates
• fix problems with NA handling for factors
• make sure minsplit criterion applies in the presence of missing values. Bug spotted by Han Lee <[email protected]>.

party 0.8-8 (2006-08-23)

• export ‘varimp’ (variable importance measures for cforest())
• documentation updates
• add codetools checks

party 0.8-7 (2006-07-18)

• REAL(NULL) now gives an error in C code and scores could be potentially NULL: fixed for the time being.
• add ‘show’ method for BinaryTree and RandomForest objects

party 0.8-6 (2006-05-22)

• add some validity checks for hyper parameters
• add function ‘varimp’ for computing variable importance measures for some random forests (this is still experimental and thus not exported yet, so use ‘party:::varimp’)

party 0.8-5 (2006-04-24)

• all hyper parameters to ‘cforest’ are now controlled using objects of a new class ‘ForestControl’ which can be created using ‘cforest_control()’.
• sampling of a fraction of the observations without replacement is now available for the ‘cforest’ implementation of random forest.

party 0.8-4 (2006-04-12)

• renamed argument ‘teststattype’ to ‘teststat’ with defaults c("quad", "max") in order to be compatible with the ‘coin’ package, version >= 0.4-5
• use ‘1 - (1 - p)^k’ instead of ‘p * k’ for Bonferroni-adjustment. Node 7 for the ‘GlaucomaM’ data is now splitted in addition (in tms).

party 0.8-3 (2006-03-20)

• ‘predict’ returned nonsensical results in case a tree was fitted to a multivariate response variable. Now a list with one element for each observation is returned.

party 0.8-2

• plotting buglets fixed: improved axis in MOB plots, correct (transparent) background on jpeg() and png() devices.

party 0.8-1 (2006-02-24)

• ‘testtype’ can be Bonferroni, MonteCarlo, Univariate and Teststatistic (instead of Raw)
• removed unnecessary constraint on weights in ‘cforest’
• maximize raw test statistics for random forest by default.

party 0.8-0 (2006-02-16)

• ‘cforest’, an implementation of Breiman's random forest ensemble algorithm based on conditional inference trees (‘ctree’) has been added. It is somewhat experimental and thus for advanced users only.
• ‘mob’, an object-oriented implementation of a recently suggested algorithm for model-based recursive partitioning (Zeileis, Hothorn, Hornik, 2005) has been added. It works out of the box for partitioning (generalized) linear regression models, others can be easily plugged in. A new vignette "MOB" describes the implementation ideas and provides a few examples.
• new S3 generic reweight() with methods for (g)linearModel for re-fitting a model with different weights.
• new argument ‘maxdepth’ to ‘ctree_control’ which allows for growing trees of a fixed maximum depth.
• LazyData: yes

party 0.3-6 (2006-02-06)

• use a different way to deal with NAMESPACEs during in tests/*.R following a suggestion by Prof. Brian D. Ripley
• use LazyLoad: yes instead of SaveImage: yes

party 0.3-5 (2006-02-02)

• make R CMD check happy and move src/README to inst/README

party 0.3-4

• documentation updates

party 0.3-3 (2006-01-18)

• some new convenience functions, not exported

party 0.3-2 (2006-01-12)

• isequal must not check equality of attributes

party 0.3-1 (2005-12-02)

• fix bug introduced in version 0.3-0: coin:::factor_trafo applies treatment contrasts in case of a binary factor but we need the full design matrix
• documentation updates

party 0.3-0 (2005-11-29)

• ‘ytrafo’ and ‘xtrafo’ functions make use of ‘coin:::trafo’ now, i.e. the handling of influence functions and transformations has been unified in packages ‘party’ and ‘coin’

party 0.2-10 (2005-11-08)

• new slot ‘data’ in BinaryTree objects, slots inputnames and levels have been removed

party 0.2-9 (2005-10-19)

• splits in categorical variables could have failed due to weired internal checks

party 0.2-8 (2005-09-06)

• fix problems reported by codetools

party 0.2-7 (2005-08-31)

• extract inputs using menv@get("input", data = newdata) in predict

party 0.2-6 (2005-08-29)

• make gfortran happy

party 0.2-5 (2005-08-19)

• ctree() now searches the global environment for variables given in ‘formula’ when the ‘data’ argument is unspecified.

party 0.2-4 (2005-07-07)

• names of ‘criterion’ element in ‘SplittingNode’ objects were wrong
• categorical splits with ‘ctree_control(testtype = "MonteCarlo")’ were potentially wrong

party 0.2-3 (2005-06-29)

• print and plot only levels which are available in a node (for nominal splits)

party 0.2-2 (2005-06-27)

• ./src/Makedeps will be automatically generated (on Windows) and must not be part of the source-package.
• vignette cosmetics