NEWS

Version 2.4.9.2
  2020-03-13
  1. Updated CITATION, DESCRIPTION, README.md
  2. Introduced the Rdpack to manage references

  2020-02-13
  1. Added ORCID for author Sajal Kumar.

  2019-11-10
  1. Updated the REAMDE.md file of the package.

  2019-11-04
  2. Fixed "page" entry to "pages" entry in the CITATION file.
  3. Deprecated 'cp.chisq.test'. The function has been moved to R
     package 'DiffXTables'.

  2019-09-28
  1. Created version 2.4.9.2.
  2. Fixed signed / unsigned mismatch in trimTable.cpp.

Version 2.4.9.1
  2019-09-20
  1. Created version 2.4.9.1.
  2. Fixed a bug in trimming all-zero rows or columns from the
     input table in EFT DQP and DP. Added a new test case x16 for
     this bug.
  3. Eliminated the use of static array in the EFT DP and DQP
     code.

Version 2.4.9 (not publicly released)
  2019-09-08
  1. Created version 2.4.9.
  2. Revised README.md.
  3. Fixed a bug for EFT DQP. Included the table that caused the
  bug as test case table x15.

Version 2.4.8-1

  2019-09-08
  1. Revised 'DESCRITION'.
  2. Revised 'README.md'.

  2019-09-07
  1. Fixed a bug in the exact.dqp option of the exact functional
  test. Added a new test case that had given this bug in the test
  functions.
  2. Re-organized the test cases into more R files based on
  'testthat'.
  3. Added 'README.md'.
  4. Included references into DESCRIPTION.

  2019-09-06
  1. Default index.kind is changed from uncoditional to function
  index in function test.interactions(). (API change)
  2. Edited documentation.
  3. Changed the package title to "Model-Free Functional Chi-Squared
  and Exact Tests"

  2019-09-05
  1. Created version 2.4.8-1.
  2. Updated package documentation (DESCRIPTION, CITATION). Now
  included a reference to Hien Nguyen's unpublished dissertation.
  3. Updated manuals for the package,
  4. Updated vignette for fun.chisq.test.Rmd.
  5. Commented out std::cout usage in Node::show() function
  defined in Node.cpp.
  6. Changed to use chi-squared test instead of chi-square
  test.
  7. Created a new manual (EFT.Rd) for exact functional test
  functions EFTDP() and EFTDQP().
  8. Updated the table and sample size restrictions to the exact
  test options in function fun.chisq.test().

Version 2.4.8 (not publicly released)
  2018-12-25
  1. Provide new method options "exact.qp", "exact.dp", and
  "exact.dqp" for fun.chisq.test().

  2018-12-06
  1. Created version 2.4.8 to merge the exact tests in 2.4.6 and
  2.4.7.

Version 2.4.7 (not publicly released)
  2018-07-24
  1. Improved the runtime of the exact functional test by applying
  the quadratic lower bound and upper bounds for each node at the
  step of network construction during branch-and-bound. This sped up
  the test thousands of times from the quadratic-programming-only or
  dynamic-programming-only option on all contingency tables.

Version 2.4.6 (not publicly released)
  2018-06-17
  1. Added an alternative implementation of the exact functional
  test using branch-and-bound with dynamic programming. This reduced
  runtime on some contigency tables with large table size or sample
  size by thousands of times.

  2. Added a new method option (method = "exact.dp") to function
  fun.chisq.test() in "R/FunChisq.R" for the above new exact
  functional test implementation.

Version 2.4.5-3
  2018-12-04
  1. Updated simulate_tables() function to be more accurate when
  generating small tables where row and column variables are
  independent. Specifically, zero counts are now allowed.
  2. Tests for simulate_tables() in test_simulate.R is also updated.
  3. Introduced simulate_independent_tables() from the preivous
  code, where noise is applied along both rows and columns
  (previously only along the rows). The funciton is in
  simulate_tables.R.
  4. Modified prelim.check() in simulate_tables.R.
  5. The manual page for simulate_tables() is updated accordingly.
  6. Updated the examples in the manual of plot_tables().

  2018-11-01
  1. Added an argument in plot_table() to highlight row maxima with
  a box.

  2018-10-24
  1. Created version 2.4.5-3.
  2. Make "conditional function index" to be the default, previously
  "unconditional".
  3. Added a new vignette "Examples of discrete patterns".
  4. Set the default function index.kind to "conditional". The
  "unconditional" option for function index will phase out.
  5. Updated vignettes.

Version 2.4.5-2
  2018-10-22
  1. Reintroduced a test source code file test_FunChisq.R back,
  which was accidentally deleted from the previous version.

  2018-10-17
  1. Added a plot_table() function to visualize a contingency table.

  2018-10-16
  1. Created version 2.4.5-2.
  2. Included conditional FunChisq R code.

Version 2.4.5-1
  2018-06-16
  1. In the exact functional test C++ code, improved the numerical
  precision of the FunChisq statistic using an equivalent
  mathematical form already used in the R version. This fixed bugs
  in the exact functional test when the table is of certain
  dimension and sample size.

  2. Added a few more test cases for the exact functional test.

  3. Increased the maximum table size from 5x5 to 10x10 for the
  exact functional test.

  4. Added a warning message when asymptotic test is used in place
  of the exact test to avoid long computational time.

  5. Updated the DOI of the reference to exact functional test.

Version 2.4.5
  2018-02-08
  1. Added a parameter "exact.mode.bound" in the fun.chisq.test()
  function to switch ON/OFF the fast branch-and-bound algorithm in
  the exact functional test.
  2. Updated testthat cases for exact functional test.

Version 2.4.4
  2018-02-05
  1. Added a new reference (Zhong and Song, 2018) for exact
  functional test.
  2. Changed the package title to "Chi-Square and Exact Tests for
  Model-Free Functional Dependency"

  2017-10-26
  1. Included a reference for the simulate_tables() function that
  describes the strategies used by the function.

  2017-06-11
  1. Updated the functional indices to be more accurate when the
     number of row is less than the number of columns and also
     when conditioned on the column sum.

  2017-05-29
  1. Added "simulate.p.value" method option in fun.chisq.test()
  to calculate p-value with Monte carlo simulated distribution.

  2017-05-16
  1. Updated the vignette for choosing quantities for functional
     dependencies.

  2017-05-05
  1. Fixed a bug in simulating 'discontinuous' contingency tables
     when the number of column is two.
  2. Updated manuals.

Version 2.4.3
  2017-04-27
  1. Fixed a bug in specifying the margin to apply noise in
  simulate_tables().
  2. Added a noise.model parameter in simulate_tables() to
  specify either the "house" or "candle" noise model for applying
  noise to contingency tables representing ordinal or categorical
  data.

  2017-04-25
  1. Revised package description and manuals.

Version 2.4.2
  2017-04-20
  1. Renamed pattern type "nonmonotonic" to "many.to.one" in
     simulate_tables(). The latter is mathematically correct.
  2. Added a "discontinuous" pattern type in simulate_tables().
  3. Added a new candle noise model for categorical variables.
  4. Sped up add.noise function code by taking advantage of
  vectorized multinomial distribution R function.

Version 2.4.1
  2017-04-02
  1. Revised the manual for function simulate_tables()

  2017-02-28
  1. Suppressed warning messages when calling chisq.test() to
     compute chi-squares in function simulate_tables().
  2. Edited the manual for simulate_tables().
  3. Edited other manuals for improved consistency with R package
     reference format.

Version 2.4.0
  2017-02-26
  Changes
  1. Added a new R function simulate_tables() with supporting test functions.
  2. Added a new R function add.house.noise() with supporting test functions.
  3. Introduced the use of 'R_registerRoutines' and 'R_useDynamicSymbols'.

Version 2.3.4
  Changes
  2016-10-01
  1. Added keywords to the package manual.

Version 2.3.3
  Changes
  2016-09-02
  1. Updated the vignettes.

Version 2.3.2
  Changes
  2016-08-29
  1. Updated the reference section to fix the year of Pearson's chi-square test
     paper which was published in 1900 not 1990.

  2016-05-03
  1. Now check all options for the method argument so that only valid
    methods are allowed.

Version 2.3.1
  Changes
  2016-05-01
  1. Expanded test.interactions() to test many-to-one combinatorial
     interactions in C++ via Rcpp.

Version 2.3.0 (not deposited to CRAN)
  Changes
  2016-04-30
  1. Data frame input is now converted to numeric matrix before exact
     functional test.
  2. Added function test.interactions() to test pairwise (one-to-one)
     interactions, implemented in C++ via Rcpp for computational efficiency.

Version 2.2.4
  Changes
  2016-04-21
  1. Added vignette "Which statistic to use for functional dependency
     from fun.chisq.test()?"
  2. Updated references and description.

Version 2.2.3
  Changes
  2016-03-31
  1. Use [[Rcpp::export]] to automatically generate R interface.

  2016-03-15
  1. Revised the code to remove dependency on RcppClassic.

  2016-03-12
  1. Revised help documentation and included new references.

Version 2.2.2
  Changes
  2016-02-07
  1. Handled a special case for the normalized FunChisq when the degrees of
     freedom are zero.

  2016-02-05
  1. Renamed the "type" argument to "alternative" in fun.chisq.test().
  2. Revised values of the "method" argument in fun.chisq.test(). Previous
     values ("default" and "normalized") are still supported but obsolete.
  3. Added the "log.p" argument in both cp.fun.chisq.test() and cp.chisq.test().
  4. Updated the documentation.

  2016-01-30
  1. Added a new argument "index.kind" to fun.chisq.test() to specify
     the function index kind: "unconditional" or "conditional" on a given
     marginal of Y.

  2016-01-26
  1. Fixed a bug in cp.chisq.test().

Version 2.2.1
  Changes
  2016-01-25
  1. Fixed a bug introduced in the previous version.
  2. Updated package description to be more reflective of recent additions.
  3. Included missing references.

Version 2.2.0
  Changes
  2016-01-23
  1. Improved code efficiency for fun.chisq.test().
  2. Now fun.chisq.test() returns an estimate of function index between
     0 and 1, in analogy to Cramer's V, but asymmetrical.
  3. Added additional test examples for fun.chisq.test().

  2016-01-22
  1. Added type argument to fun.chisq.test() to specify functional or
     non-constant functional chi-squares.
  2. Added log.p argument to fun.chisq.test() to obtain log of p-value
     to improve accuracy when sample size is large and p-value is close
     to zero.

  2015-07-03 (Unpublished version 2.1.1 )
  1. Added cp.chisq.test() for comparative chi-square test, not considering
     functional dependencies.
  2. Added test examples for cp.chisq.test().

Version 2.1.0 2015-06-29
  Changes
  1. Substantially reduced the run time of exact functional test by designing a
     better branch and bound strategy.
  2. Enabled C++11 compling by adding two files (Makevars and Makevars.win).
  3. Fixed a bug occured under WIN32 using long double by adding define.h to
     specify double precision for WIN32 and long double precision for WIN64.
  4. Increased float comparison precision by considering a tolerance.
  5. Imported pnorm() and pchisq() from the "stats" package.

Version 2.0.2 2015-03-03
  Changes
  1. Updated documentation for the package and its functions.
  2. Fixed a testing issue under r-release-linux-ix86 flavor.

Version 2.0.1 2015-02-23
  Changes
  1. Removed assert() function from StatDistribution.cpp.
  2. Removed Makevar and Makevar.win files.
  3. Removed all iostream and sstream and cassert.
  4. Removed TransitionTableIO.cpp.
  5. In the testthat examples, signif(x,8) is used to compare 8 significant
     digits of the results.
  6. Added a normalized functional chi-square test example.

Version 2.0.0 2015-02-12
  Changes
  1. Added a new exact functional test as a method option to fun.chisq.test().
     The exact functional test is an exact version of FunChisq test, it is
     more precise to detect functional dependencies in small sample-sized
     contingency tables.
  2. Added a new comparative functional chi-square test for detecting
     heterogeneity in functional dependencies among contingency tables.
  3. Revised the examples and documentation to improve usability.
  4. Added automated test cases into the package.
  5. Started the NEWS file.

Version 1.0 2014-03-08
  Changes
  1. The first release of this package implements the functional chi-square
     test and a normalized version.
