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Hi! I'm Rafael Xavier

Summary

I am a data scientist holding a Masters degree in Economics. I have 7+ years of experience working with statistical and machine learning models, involving projects in public policy research as well as in consulting.

I work at Mercado Libre, Latin America's largest e-commerce site, as a Data Science Technical Leader. Prior to that I built and led a data science team at one of Uruguay's largest consulting firms.

Current projects

I enjoy building tooling for data scientists. My team built Embedding Encoder, a scikit-learn compatible transformer that leverages neural network embedding layers to process categorical variables, and I'm currently working on Poniard, a scikit-learn companion library that streamlines model evaluation.

Past projects

I built econuy, a data retrieval and processing library for Uruguayan economic statistics. I also built a Flask/Plotly Dash frontend hosted at econ.uy that's been online since mid-2020.

Rafael Xavier's Projects

cpe_ds_scraping icon cpe_ds_scraping

Notas de scraping del curso de Análisis de datos con Python para el Diploma en Data Science de Instituto CPE. 2021.

dense-feature-mixer-unforked icon dense-feature-mixer-unforked

Python class that allows the user to create their own feature embeddings using a neural network that receives categorical and numerical columns as inputs.

econuy icon econuy

Wrangling Uruguayan economic data so you don't have to.

econuy-extras icon econuy-extras

Some extra retrieval logic that I don't want to bloat the main package with.

econuy-web icon econuy-web

A website that aggregates Uruguayan economic statistics.

embedding-encoder icon embedding-encoder

Scikit-Learn compatible transformer to obtain dense feature embeddings from sparse categorical variables.

explainerdashboard icon explainerdashboard

Quickly build Explainable AI dashboards that show the inner workings of so-called "blackbox" machine learning models.

norm-volume-uy icon norm-volume-uy

Web scraping to obtain laws and decrees approved by the Uruguayan government

poniard icon poniard

Streamline scikit-learn model comparison.

trantran icon trantran

A language translator based on transformer neural networks.

twitter-oficiales icon twitter-oficiales

Testeo gráfico para saber si las cuentas de Twitter del gobierno aumentaron su actividad a medida que se acercaban las elecciones nacionales. TL;DR: parece que no

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