linearmodels.panel.covariance.FamaMacBethCovariance

class FamaMacBethCovariance(y, x, params, all_params, *, debiased=False, bandwidth=None, kernel=None)

HAC estimator for Fama-MacBeth estimator

Parameters:

yndarray

(entity x time) by 1 stacked array of dependent

xndarray

(entity x time) by variables stacked array of exogenous

paramsndarray

(variables by 1) array of estimated model parameters

all_paramsndarray

(nobs by variables) array of all estimated model parameters

debiasedbool

Flag indicating whether to debias the estimator.

bandwidthint

Non-negative integer to use as bandwidth. Set to 0 to disable autocorrelation robustness. If not provided a rule-of- thumb value is used.

kernelstr

Name of one of the supported kernels. If None, uses the Newey-West kernel.

Notes

Covariance is a Kernel covariance of all estimated parameters.

Attributes:

all_params

The set of parameters estimated for each of the time periods

bandwidth

Estimator bandwidth

cov

Estimated covariance

eps

Model residuals

name

Covariance estimator name

s2

Error variance

Methods

deferred_cov()

Covariance calculation deferred until executed

Properties

ALLOWED_KWARGS
DEFAULT_KERNEL
all_params	The set of parameters estimated for each of the time periods
bandwidth	Estimator bandwidth
cov	Estimated covariance
eps	Model residuals
name	Covariance estimator name
s2	Error variance