[^ README](/guide-inequalities/r/)
Moment Inequality Function
m_function(
theta,
w_data,
a_matrix,
j0_vector,
v_bar,
grid0 = "all",
iv_matrix = NULL,
dist_data = NULL
)
theta
a vector containing the parameters of interest.
w_data
an n x k matrix of product portfolio data.
a_matrix
an n x (num_products + 1) matrix of estimated revenue differentials.
j0_vector
a num_products x 2 matrix of ownership by the two firms.
v_bar
a tuning parameter as in Assumption 4.2.
grid0
optional vector of length num_products containing the indices of the products in the market.
iv_matrix
optional n x d_iv matrix of instruments.
dist_data
an n x (J + 1) matrix of distances from the product factories to the cities.
a matrix of the moment functions with n rows.