NEWS

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micEconCES 1.0-2 (2023-01-06)

• updated the citation information: now referring to the book chapter
• now referring to the package's GitHub page instead of to its R-Forge page

micEconCES 1.0-0 (2021-01-06)

• added durbinWatsonTest.cesEst() for conducting Durbin-Watson tests for serial correlation of the residuals of CES functions estimated by cesEst() as suggested by White (1992)
• added argument 'checkStart' (default: TRUE) to function cesEst(): if it is set to 'FALSE', cesEst() does not check whether the starting values are in the expected ranges for a production function
• cesEst() now calculates the elasticities of substitution even if they are negative (i.e. if the corresponding 'rho' is smaller than -1)
• added argument 'returnGrad' (default: FALSE) to function cesEst(): if it is set to 'TRUE', cesEst() returns a matrix with the gradients of the dependent variable with respect to the parameters
• some improvements and corrections of the documentation
• removed the vignette, because an almost identical document is available at https://EconPapers.repec.org/RePEc:foi:wpaper:2011_9

micEconCES 0.9-8 (2014-04-23)

• 'micEconCES' no longer depends on packages 'systemfit', 'miscTools', and 'micEcon' but it imports these packages

micEconCES 0.9-6 (2012-01-03)

• the user can determine further details of the graph that is produced by the plot() method
• added CITATION file (referring to the working paper)
• the source code of the vignette is in subfolder /vignettes/ now

micEconCES 0.9-2 (2011-06-05)

• improved the vignette

micEconCES 0.9-0 (2011-05-23)

• cesCalc() and cesEst() can account for technological change
• cesEst() can estimate CES functions by assuming that the error term is multiplicative (i.e. taking the residuals from the logged model)
• cestEst() additionally returns the constant elasticity/elasticities of substitution and print.cesEst() additionally prints the constant elasticity/elasticities of substitution
• summary.cestEst() additionally returns the variance/covariance matrix, standard error(s), t-value(s) and P-value(s) of the constant elasticity/elasticities of substitution and print.summary.cesEst() additionally prints the constant elasticity/elasticities of substitution as well as the corresponding standard error(s), t-value(s), and P-value(s)
• the 3-input nested CES function no longer has coefficient "gamma_1", because it is obsolete and cannot be identified in econometric estimations
• renamed some coefficients of the 3-input and 4-input nested CES functions
• added data set "GermanIndustry"
• the package vignette additionally describes the features regarding the 3-input and 4-input nested CES functions

micEconCES 0.8-0 (2010-12-13)

• added support for nested CES functions with 3 or 4 inputs

micEconCES 0.6-8 (2010-08-12)

• reduced execution time of the examples by removing several examples and by decreasing the number of iterations in the (example) estimations that use the SANN and the DE algorithm

micEconCES 0.6-6 (2010-03-20)

• fixed a bug in the package vignette

micEconCES 0.6-4

• added a "vignette" describing this package; it has the title "Estimating the CES Function in R: Package micEconCES" and it was written by Geraldine Henningsen and Arne Henningsen
• the test scripts cesTest.R, cesTestGrid.R, and rhoFixed.R as well as the corresponding output files have been excluded from the R package (using .Rbuildignore) to reduce the execution time of "R CMD check" on CRAN (these scripts are still included in the SVN repository)

micEconCES 0.6-2 (2010-03-15)

• initial release of this package
• the function "cesEst", its documentation, and the test script have been moved from the "micEcon" package to this package
• function "cesCalc" for calculating the endogenous (output) variable of the CES function has been added
• a lot of features (e.g. estimation methods), (S3) methods, and test scripts have been added