| D | This is an internal function. It calculates the criterion function for semiparametric estimation. |
| g | This is an internal function. The structural function. |
| h0 | This is an internal function. The treatment choice function below the cutoff, used for the data generating function nrddgp. |
| h1 | This is an internal function. The treatment choice function above the cutoff, used for the data generating function nrddgp. |
| k | This is an internal function. The kernel function |
| K_Y | This is an internal function. The anti-derivative of the kernel function. |
| nrdbw | Bandwidth selector for nonlinear RDD |
| NRDD | Nonlinear RDD estimator |
| nrddgp | Data generating process for nonlinear RDD |
| nrdse | Standard error for nonlinear RDD |