Marcelo P.

I'm a full-time PhD researcher from Brazil and, in my spare time, I take freelance programming jobs in the platform. I teach R at university level and still haven't found a data problem I can't fix. I'm an expert in the following topics: - Data cleaning and manipulation (readr, dplyr, stringr, fs, ...) - Text analysis -- Sentiment and n-gram frequency count (tidytext) - Fetching and parsing data using APIS from Twitter, Youtube and Spotify - Shiny applications (shiny + shinyWidgets + ...) - Financial applications with R (PerformanceAnalytics, Rmetrics, ...) - Webscrapping with R (rvest, RSelenium) - Econometric modeling (lm, plm, gml, vars, markov switching models, ..) I have written and published several CRAN packages that deals with financial data. I also wrote a book about using R in Finance. You can find more details my website ([login to view URL]). PS: please don't contact for homework code assignments. My **only** exception is if you need guidance towards R material to study. In that case, I can offer some advice for free.