formulaic

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When working with time series data, is there a way to use lagged variables?

2

Let's say we have time series data and two variables in a Pandas dataframe. Let's say we want to run a regression of some target variable $y_t$ on $x_t$ and...

rgriva

Add narwhals materializer for dataframe agnosticism.

4

This patch adds initial support for `narwhals`. It's... patchy. You can try it out using: ``` import narwhals as nw import pandas as pd from formulaic import model_matrix df =...

matthewwardrop

PyArrow input should result in PyArrow output?

4

If I run the README example with PyArrow input, I get pandas output: ``` import pandas as pd from formulaic import Formula import pyarrow as pa df = pa.table({ 'y':...

MarcoGorelli