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Rafael R PhD
@rafreis
Top Rated
Data is the new oil!
Brésil
Anglais
À propos de moi
Hi, I’m Rafael—a data scientist, researcher and professor with 10+ years of experience turning complex data into clear insights. I hold a PhD from the University of Leeds and have partnered with researchers, NGOs and businesses to solve real-world challenges using R, SPSS and Python, from statistical modelling and machine learning to experimental design. As author of 16 peer-reviewed papers, I guarantee methodological rigor, reproducibility and actionable results. Let’s connect and drive your project forward!
Compétences
Rafael R PhD
50 $US/heure
hors ligne •
Temps de réponse moyen de 4 heures
Voir mes services
Modélisation et analyse statistique
I will do your data analysis in r, spss or python with a clear report
Machine learning
I will build and evaluate a machine learning model in python or r
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Dites à Rafael R PhD ce dont vous avez besoin.
50 $US
/
heurePortfolio
Expérience professionnelle
Unlisted
Temps partiel • 4 yrs 5 mos
Professor of Data Science
Aug 2022 - Dec 2023 • 1 yr 4 mos
Company: Sirius Education Taught data science and quantitative methods remotely — statistics, R/Python and applied analytics.
Data Scientist
Mar 2020 - Apr 2023 • 3 yrs 1 mo
Company: SENAI (National Service for Industrial Training) Built COVID-19 case-forecasting models powering a public-health decision dashboard (Monitora-Covid19). Designed a survey and a predictive infection-risk model to optimize PCR testing via risk-based sample pooling, reducing reagent use on low-probability cases. Delivered analytics and visualizations to support data-driven public-health decisions.
Doctoral Researcher (PhD)
Leeds • Temps plein
May 2016 - Dec 2019 • 3 yrs 7 mos
Company: Leeds Institute for Data Analytics PhD research on behaviour change and sustainable mobility (EMPOWER, EU Horizon 2020). Designed and analyzed a large-scale survey (920 respondents), applied behavioural-science theory (Theory of Planned Behaviour, Norm-Activation Model) and psychographic segmentation (cluster + discriminant analysis), and modeled determinants of travel behaviour. Published peer-reviewed work; conducted thesis analytics within the Leeds Institute for Data Analytics (LIDA).
301 Avis
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Les plus pertinents
cispediatrics
États-Unis
Rafael exceeded my expectations, was timely, and answered all of my questions thoroughly. He has a deep understanding of statistics and thought of all details to make sure my project was in line with current science.
Utile?
bel_yuv
Irlande
Collaboration en cours
Thank you once again, Rafael. It has been a pleasure working with you with my ongoing projects. Great collaborator.
Utile?
san_112
Arabie Saoudite
Collaboration en cours
Utile?
speechieyyl
Hong Kong
Professional work, great communication, and a very good understanding of my request. Would definitely recommend!
Utile?
popovic2
France
Excellent analysis, very profesionnal
Utile?
