# Case Studies & Blog Posts

A curated list of blog posts, tutorials, and case studies that show how pyfixest is used in practice.
Please let us know if you have written about use cases of PyFixest =)

## Marketplace Experiments

- **Leveraging PyFixest for High-Cardinality Marketplace Modeling at Instacart**
  <https://tech.instacart.com/leveraging-pyfixest-for-high-cardinality-marketplace-modeling-at-instacart-3913df91a04b>

  Instacart describes how they use pyfixest to run large-scale marketplace
  experiments with high-cardinality fixed effects and provide a nice introduction to
  the method of alternating projections.

## Tutorials & Introductions

- **A Guide to Using PyFixest in Python**
  <https://carlos-mendez.org/post/python_pyfixest/>

  A hands-on introduction to estimating fixed-effects models with pyfixest.

- **Fixed Effects Regressions in Python with pyfixest**
  <https://blog.tidy-intelligence.com/posts/fixed-effects-regressions/>

  A tutorial covering fixed-effects regressions and standard error clustering.

- **Coding for Economists: Regression**
  <https://aeturrell.github.io/coding-for-economists/econmt-regression.html>

  A chapter in *Coding for Economists* that uses pyfixest for regression
  analysis in economics.