Extract text model coefficients for documents and features, in a manner similar to coef and coefficients.
coefficients is an alias for coef.)
a fitted or predicted text model object whose coefficients will be extracted
Returns a list of named numeric vectors with the following elements:
coefficients estimated for each feature
standard errors estimated for each feature-level point estimate
coefficients estimated for each document
standard errors estimated for each document-level point estimate
a document-level offset for applicable models
a feature-level offset for applicable models
An element that is not applicable for a particular object class will be
coef_documents has no meaning for a fitted wordscores object.