New features and changes for v3.0 (June 2007)

• Improved random generators.
• Added Gumbel, Triangular, Erlang distribution random number generators.
• Changed implementation for all random generators to allow either use of MtxVec.Random.dll or "inhouse"
• simplified random generators.
• More examples, including C# an C++ examples.
• All examples have been updated with the new Vector/Matrix syntax.
• New HtmlHelp 2 format support. Now F1 works again.
• Added Chi-Squared distribution parameter estimate (ChiSquareFit).
• Added Cauchy distribution MLE parameter estimates (CauchyFit).
• Added Erlang distribution parameter estimates (ErlangFit).
• Added Laplace distribution MLE parameter estimates (LaplaceFit).
• Added Negative Binomial distribution parameter estimates (NegBinomFit).
• Expanded regression routines.
• Added PRESS and R2 functions.
• Several bug fixes.

New features and changes for v2.1 (May 2006)

• Several new routines for handling/manipulating time series.
• New tests for normal distribution, detecting outliers, etc.
• Improved examples and help files.
• Several bug fixes.
• Added Kolmogorov-Smirnov goodnes of fit test (one and two sample).
• Added empirical cumulative distribution function.
• Chi2 GOF test: added support for log-normal and uniform distribution.
• Added ZScores for vector.
• Added Bera-Jarque test of composite normality.
• Added Grubbs's test for outliers.
• Several bugs in routine Histogram fixed.
• Added single moving average function.
• Added sigle, double and triple exponential smoothing routines.
• Added sigle, double and triple exponential forecasting routines.
• Added ARMA/ARIMA simulation routines.
• Added ARMA/ARIMA estimation (MLE) routines.
• Added ARMA/ARIMA forecasting routines.
• Added Yule-Walker AR coefficients estimation.
• Added Burg AR coefficients estimation.
• Added Innovations ARMA and MA coefficients estimation.
• Added innovations and Durbin-Levinson algorithms.
• Added ARAR model fitting and forecasting routines.
• Added Box-Cox and inverse Box-Cox transformation.
• Added rational model fit.
• Added logistic model fit.
• Added Poisson regression.
• Added tMtxBinaryTest component for performing one and two test(s) binary diagnostic test.
• Added several new examples demonstrating time series analysis routines..

New features and changes for v2.0 (December 2005)

• The demo now compiles with VCL.NET.
• Fixed a memory leak for the custom editors.
• Support for Delphi 2005, 2006 W32 and .NET personalities and updated recompile tool.

New features and changes in v2.0 (May 2005)

• Compatible with MtxVec v2.
• Support for .NET.
• Support for SSE3 instruction set.
• Substantial increase in number of optimized primitive functions and methods via MtxVec v2.
• Improved range checking and programmer safety.
• Several bug fixes.
• Enhanced and more customizable routines.

New features and changes in v1.1 (June 2002)

Statistics.pas

• Added Chi-Squared and F tests for comparing variance(s).
• Added Spearman rank correlation test.
• Added LogNormalFit routine for fitting log-normally distributed values.
• Fixed the internal TiedRank routine (in some special cases ranks were not calculated correctly) and moved it to public section.
• Added autocovariance, autocorrelation and partial autocorellation functions.
• Added Chi2 Goodness of fit test routines.
• Added Shapiro-Wilks and Shapiro-Francia Goodness of fit test routines.
• Minor bug fixes.

StatSeries.pas

• Added control limits calculation for R-Chart.
• Added EWMA chart calculation.
• Removed the probability axis tool. Now the relevant code is included in probability series (simplified code - see updated example in Statistics demo).

Regress.pas

• Fixed R2 calculation for Constant := false case.
• Added logistic (simple and ordinal) regression routines.
• Minor bug fixes

StatTools.pas

• New TMtxLogistReg component which encapsulates logistic regression routines.
  

Initial release of Statistics for MtxVec 1.0 (July 2001)