grmpy is a Python package for the simulation and estimation of the generalized Roy model.
Project description
grmpy is a Python package for the simulation and estimation of the generalized Roy model.
grmpy
grmpy
is an open-source Python package for the simulation and estimation of the generalized Roy model. It serves as a teaching tool to promote the conceptual framework of the generalized Roy model, illustrate a variety of issues in the econometrics of policy evaluation, and showcases basic software engineering practices.
Marginal Treatment Effects (MTE) can be estimated based on a parametric normal model or,
alternatively, via the semiparametric method of Local Instrumental Variables (LIV).
You can install grmpy
either via pip
$ pip install grmpy
Or download it directly from our GitHub repository and install the package in editable mode
$ git clone https://github.com/OpenSourceEconomics/grmpy.git
$ pip install -e .
Quick Start
Initialization File
grmpy
relies on an "initialization.yml"
file (referred to as ìnit_file
below)
to perform both simulation and estimation.
For example, check out these two init_files
for
simulation and parametric estimation as well as
a semiparametric estimation setup.
Below you'll find some example code you can copy to jump-start your project.
Simulation
import grmpy
# Specify the initilaization file you want to use, e.g.:
init_file = "ProjectFiles/simulation.yml"
data = grmpy.simulate(init_file)
Estimation
import grmpy
# Specify the initilaization file you want to use, e.g.:
init_file = "ProjectFiles/estimation.yml"
# Parametric Normal Model
rslt = grmpy.fit(init_file, semipar=False)
grmpy.plot_mte(rslt, init_file, color="blue", semipar=False, save_plot="MTE_par.png")
# Local Instrumental Variables (Semiparametric Model)
rslt = grmpy.fit(init_file, semipar=True)
grmpy.plot_mte(rslt, init_file, color="orange", semipar=True, nboot= 250, save_plot="MTE_semipar.png")
Please visit our online documentation for tutorials and more.
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