$ whoami --verbose

Statistics student building products that hold up.

B.Sc. Statistics (in progress) · UFESML · data engineering · local LLMsEspírito Santo, Brazil

02 / selected work

Diabetes Readmission

A famous, irregular clinical dataset: rare target, weak signal, 97% missing in one column, 716 diagnosis codes and repeated patients. How far does a well-specified logistic regression go against gradient boosting — measured with every metric that matters?

Logistic regressionscikit-learnLightGBMstatsmodelsNumPyHugging Facepytest

AUC 0.670 vs 0.681
99,340 encounters · 8 models
machine learning · logistic regression · model evaluation 02

EduData

Ask questions in Portuguese about eight editions of Brazil's higher-education statistics. Numbers come from the database — never from a model.

PythonDuckDBSQLParquetOllamapytest

2017—2024
8 editions · INEP
data engineering · analytics engine · local LLM 03

Credit Default API

Estimate the probability that a credit-card client defaults next month, choose the decision threshold on purpose, and serve it as a validated REST API.

XGBoostscikit-learnSHAPFastAPIPydanticDocker

ROC AUC 0.777
recall 0.601
machine learning · model serving 04

Adaptive Recommender

A weekend playing with recommender systems: five different models, an engine that decides how much to listen to each one for each customer, and an evaluation that does not hide when the fancy idea only ties the simple one.

Pythonscikit-learnLightGBMSciPySQLiteStreamlitpytest

NDCG@10 0.313
300 stores · + real data
recommender systems · weekend project