combination_with_repetition

The number of elements (variables).

The size of the groups (degreess of the polynomial interaction).

From combinatorial math, this function aims calculates combinations with repetitions.

Estimation of production functions by the Olley-Pakes, Levinsohn-Petrin and Wooldridge methodologies.
The package aims to reproduce the results obtained with the Stata's user written opreg <http://www.stata-journal.com/article.html?article=st0145> and levpet <http://www.stata-journal.com/article.html?article=st0060> commands.
The first was originally proposed by Olley, G.S. and Pakes, A. (1996) <doi:10.2307/2171831>.
The second by Levinsohn, J. and Petrin, A. (2003) <doi:10.1111/1467-937X.00246>.
And the third by Wooldridge (2009) <doi:10.1016/j.econlet.2009.04.026>.

Rodrigo R Rem<c3><a9>dio

combination_with_repetition: Combination with repetition.

Description

Usage

Arguments