Ekaterina K.

A highly trained specialist in the data science field with 3+ years of experience. I bring value to the business by making sense out of your data using statistical methods and visualization tools. In the shortest time, I will provide you with professionally completed work. ⚡Tech stack: ✅ R: great experience in building static and interactive graphs using R built-in functions and additional libraries (ggplot2, shiny, igraph, etc.). Creating dashboards with different complexity with help of library shiny. Implementation of market baskets analysis using libraries arules and arulesViz. Text mining and sentiment analysis (libraries tm, snowballc , syuzhet). ✅ Tableau: creating meaningful and useful dashboards that give answers to business questions. ✅ Excel: usage formulas of any complexity (IF, VLOOKUP, HLOOKUP, etc.), conditional formatting, charts, graphs, pivot tables. Providing spreadsheets that are easy to read and use. ✅ Web scraping: data scraping from static and dynamic web pages using R (libraries rvest, RSelenium). ✅ Data cleaning: preparation of any type of raw data for further processing. ✅ Machine learning: broad range of experience in usage of many machine learning algorithms such as linear regression, lasso and ridge regression, elastic net, logistic regression, random forest, etc. 🙋 Excited to work on your project! Please contact me!