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xicorpy

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Python implementation of Chatterjee's Rank Correlation, its modifications, and other offshoots

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# Chatterjee's Xi, its Applications, and Offshoots

XicorPy is a Python package implementing **Chatterjee's Xi**, and its various offshoots. You can use the package with raw python objects, NumPy arrays, or Pandas DataFrames.

Please see the [Documentation][docs] for an introductory tutorial and a full
user guide.

## Features

The package currently implements:

1. Chatterjee's Xi from [1]
2. Modified Xi from [2]
3. Codependence Coefficient from [3]
4. Feature Ordering by Conditional Independence (FOCI) for Feature Selection from [3]

## Usage

The package is available on PyPI. You can install using pip: `pip install xicorpy`.

```python
import xicorpy

x = [10, 8, 13, 9, 11, 14, 6, 4, 12, 7, 5]
y = [8.04, 6.95, 7.58, 8.81, 8.33, 9.96, 7.24, 4.26, 10.84, 4.82, 5.68]
xi = xicorpy.compute_xi_correlation(x, y)

xi, p_value = xicorpy.compute_xi_correlation(x, y, get_p_values=True)

```

Refer to the [Docs][docs] for more details.

## Contributing to XiCorPy

Any help with the package is greatly appreciated! Pull requests and bug reports are greatly welcome!

## Citations:

1. [Chatterjee (2020). "A new coefficient of correlation"](https://arxiv.org/abs/1909.10140)
2. [Lin and Han (2021). "On boosting the power of Chatterjee's rank correlation"](https://arxiv.org/abs/2108.06828)
3. [Azadkia and Chatterjee (2021). "A simple measure of conditional dependence"](https://arxiv.org/abs/1910.12327)

[docs]: https://swarnakumar.github.io/xicorpy/

xicorpy

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