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Formulaic is a high-performance implementation of Wilkinson formulas for Python.
It provides:
* high-performance dataframe to model-matrix conversions.
* support for reusing the encoding choices made during conversion of one
data-set on other datasets.
* extensible formula parsing.
* extensible data input/output plugins, with implementations for:
* input:
* pandas.DataFrame
* pyarrow.Table
* output:
* pandas.DataFrame
* numpy.ndarray
* scipy.sparse.CSCMatrix
* support for symbolic differentiation of formulas (and hence model matrices).
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