When a model requires specification of multiple arguments, it is difficult to know which ones to input when looking at the docstring for the formula-based models.
Parameters
----------
endog : array-like
1d array of endogenous response values.
exog : array-like
A nobs x k array where `nobs` is the number of
observations and `k` is the number of regressors. An
intercept is not included by default and should be added
by the user. See `statsmodels.tools.add_constant`.
groups : array-like
A 1d array of length `nobs` containing the cluster labels.
time : array-like
A 2d array of time (or other index) values, used by some
dependence structures to define similarity relationships among
observations within a cluster.
family : family class instance
The default is Gaussian. To specify the binomial
distribution family = sm.family.Binomial(). Each family can
take a link instance as an argument. See
statsmodels.family.family for more information.
covstruct : CovStruct class instance
The default is Independence. To specify an exchangeable
structure covstruct = sm.covstruct.Exchangeable(). See
statsmodels.covstruct.covstruct for more information.
offset : array-like
An offset to be included in the fit. If provided, must be
an array whose length is the number of rows in exog.
constraint : (ndarray, ndarray)
If provided, the constraint is a tuple (L, R) such that the
model parameters are estimated under the constraint L *
param = R, where L is a q x p matrix and R is a
q-dimensional vector. If constraint is provided, a score
test is performed to compare the constrained model to the
unconstrained model.
missing : str
Available options are 'none', 'drop', and 'raise'. If 'none', no nan
checking is done. If 'drop', any observations with nans are dropped.
If 'raise', an error is raised. Default is 'none.'
When a model requires specification of multiple arguments, it is difficult to know which ones to input when looking at the docstring for the formula-based models.
Compare the call structure of ``smf.gee''
To the paramater definition of ``sm.GEE''