Tetyana S. Profile

4.8

(54 reviews)

You're now following

Error following user.

This user does not allow users to follow them.

You are already following this user.

Your membership plan only allows 0 follows. Upgrade here.

Successfully unfollowed

Error unfollowing user.

You have successfully recommended

Error recommending user.

Something went wrong. Please refresh the page and try again.

Email successfully verified.

$35 USD / hour

chernivtsi,

ukraine

$35 USD / hour

It's currently 7:15 PM here

Joined December 23, 2015

3 Recommendations

Tetyana S.

@TetyanaS

4.8

(54 reviews)

5.6

90%

$35 USD / hour

chernivtsi,

ukraine

$35 USD / hour

99%

Jobs Completed

97%

On Budget

98%

On Time

Repeat Hire Rate

R/C++/VB Programmer, PhD (Mathematics)

R, VBA, C/C++ STL, Python, Matlab/Octave, C#, vb .net, Web scraping, Data scraping , good knowledge of mathematics. [login to view URL] I am certified in Data Science, a 9-course specialization by Johns Hopkins University on Coursera. Specialization Certificate 6Q7MTZM57QSX earned on 2015 (Courses: Data Science Tools, R programming, Getting and cleaning data, Exploratory data analysis, Reproducible research, Statistical inference, Regression models, Machine learning and Developing data products) Also I am certified in Python for Everybody, a 5-course specialization by University of Michigan on Coursera. Specialization Certificate 43SANGLTJDKS earned on 2016 (Courses: Python Data Structures, Using Python to Access Web Data, Using Databases with Python, Capstone: Retrieving, Processing, and Visualizing Data with Python). Conduct lectures and laboratory classes in: - Object-oriented programming in C++; - Automata theory and formal languages; - VBA and VB .NET.

See all R Programmers in Ukraine

Contact Tetyana S. about your job

Portfolio

Title: "Find nearest neighbors between two datasets based on longitude and latitude coordinates using R and Python"

The customer's task:
"I need to find the closest 5 addresses (based on longitude and latitude) in set B for each address in A. I then need the addresses in A with their 5 closest matches in B plotted in a google maps graph. All addresses are in Germany. At the end of the project I would like to receive the code in R/or Python together with some comments within the code so I can use it on my own in similar situations."

Milestones:
The first milestone (R language): find the closest 5 addresses, based on longitude and latitude in set B for each address in A);
The second milestone (Python): create the google maps graph.

Find nearest neighbors using R, Python and Google Map

Election commission of publishes list of voters in a pdf format.
We created the program to convert these pdfs to csv.
It has voter details such as ID, Name, Father or Husband name, Age, Gender and address ..
All arranged as a small square table. In a given page it will have 3 columns and probably 10 to 15 rows.
So total 40 or 50 voters per page.

R-script for extract data from Pdf to Csv

Projects in R

Data Extraction / ETL
a. Create complete address of the clubs in different countries
b. Select all clubs from each of countries
c.Find latitude and longitude for each club
d.Use the google maps API to calculate the distance between all addresses in each countries

Distance matrix in R (google maps API)

$2507960$

MDI-editor in C++ for creating and editing LaTeX documents

MDI in C++

Rcpp script to intersect convex polygons using boost::geometry::intersection()
An R script: polygonTestScript.R First the script builds the polygons as R matrices. Each polygon is stored as a set of xy-coordinates that define the boundary of the convex polygon. The x-coordinates are the first column in the matrix and the y-coordinates are the second column. The set of polygons is then stored in two different R lists. One of the lists is what will be read by the Rcpp/Cpp script. Two lists are created in order to allow you to test the script with different scenarios. The R script also contains some ggplot2 code that will allow you to plot the polygons. Lastly there are two calls to the findIntersections() function. These calls will allow you test the code using the two different lists of polygons that were created at the beginning of the R script. A cpp script: intersectPolygons.cpp

https://github.com/tsopronyuk/RCpp_And_Boost_Library

RCpp and Boost Library

Find nearest neighbors using R, Python and Google Map

R-script for extract data from Pdf to Csv

Projects in R

Distance matrix in R (google maps API)

$2507960$

MDI in C++

RCpp and Boost Library

Reviews

Changes saved

Showing 1 - 5 out of 50+ reviews

Filter reviews by:

5.0

$55.00 USD

need an expert excellent in R programming

She knows well what she is doing, Well timed completion, assisted with all the queries, in short ...she is just perfect. Will work with her again.

Statistics

R Programming Language

Statistical Analysis

Mayank P.

@rk0737488

•

3 years ago

5.0

$40.00 SGD

Open Word Document with VBA in Mac

Tetyana did really well and despite not doing this exact work before, she was confident and able to deliver it.

Mac OS

Word

Excel VBA

Benne T.

@xcelinfinity

•

3 years ago

5.0

₹38,970.00 INR

Expert in R-Studio

Fantastic service, will highly recommend to hire Tetyana if you looking for professional work.

Statistics

R Programming Language

Statistical Analysis

Hemant A.

@hemanthult

•

3 years ago

5.0

$30.00 USD

Calculus whit Matlab project

Project werry well done

Matlab and Mathematica

Mathematics

Anna L.

@annalukaszewicz1

•

3 years ago

4.2

₹3,500.00 INR

Interactive UI design & processes in R, Shiny etc.

She is good at the skillsets mentioned in her profile. If you share a clearly defined requirement document / draft, you will receive your work within the timelines.

Windows Desktop

Software Architecture

Mohini T.

@mohinitadge90

•

3 years ago

Experience

Chernivtsi National University

Sep 1994 - Present

Conduct lectures and laboratory classes with students in such courses: - Object-oriented programming in C++; - Automata theory and formal languages; - VBA and VB .NET; - Mathematical modelling of systems with impulse influence

Education

Doctor of Philosophy (Ph.D.), Mathematics | Yuriy Fedkovich Chernivtsi National University

Chernivci National 'Juriy Fedkovyc' University,

Ukraine

2000 - 2003

(3 years)

Qualifications

Coursera

2016

Earned on May 9, 2016 University of Michigan 43SANGLTJDKS https://www.coursera.org/account/accomplishments/specialization/43SANGLTJDKS -Programming for Everybody (Getting Started with Python) -Python Data Structures -Using Python to Access Web Data -Using Databases with Python -Capstone: Retrieving, Processing, and Visualizing Data with Python

Coursera

2015

Earned 12/02/2015 Johns Hopkins University 6Q7MTZM57QSX https://www.coursera.org/account/accomplishments/specialization/6Q7MTZM57QSX -The Data Scientist’s Toolbox -R Programming -Getting and Cleaning Data -Exploratory Data Analysis -Reproducible Research -Statistical Inference -Regression Models -Practical Machine Learning -Developing Data Products -Data Science Capstone

Publications

Visual Basic

Ukraine, Chernivtsi, Ruta

Сопронюк, Т. М. Мicrosoft Visual Basi та його діалекти [Текст] : навчальний посібник / Т.М.Сопронюк ; ЧНУ ім. Ю.Федьковича. - Чернівці : Рута, 2007. - 120 с. - ISBN 978-966-568-877-8 Link: https://goo.gl/XK6jTL