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$30 USD / hora
Bandera de UKRAINE
slavutych, ukraine
$30 USD / hora
Aquí son las 7:16 p. m.
Se unió el diciembre 4, 2016
22 recomendaciones

Volodymyr S.

@vladishat

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5,0 (122 comentarios)
6,7
6,7
93%
93%
$30 USD / hora
Bandera de UKRAINE
slavutych, ukraine
$30 USD / hora
99 %
Trabajos finalizados
93 %
Dentro del presupuesto
95 %
A tiempo
23 %
Tasa de recontratación

Data Science and Financial Mathematics Expert

Coherent professional with a problem-solving mentality accompanied by many years of researching and teaching experience in Ukrainian universities. With superior quality in data modeling and simulation, I am confident my work will exceed expectations [login to view URL] Specializing in: - Projects pertaining to Statistical/Data Analysis, Machine Learning, Mathematics, and Physics. - Open AI machine learning and natural language processing (NLP) techniques to analyze documents and respond user queries in a chatbot. - Consulting Businesses through Financial/Inventory/Customer Data Analysis and Forecast. Skills that pertain to this project are the following: - Excellent Communicator - Problem-solver - Attention to detail - Analytical Thinker Analysis Skills: - Multivariate Statistical Analysis - Regression Analysis - Factor Analysis & Sensitivity Analysis - Bayesian Analysis - Monte Carlo Analysis - Experimental Designs - Time Series Analysis - Forecasting - Statistical Quality Control - Spatial Data Analysis - Structural Equation Modeling. Program Proficiency: - Python - R programming - Rapidminer - Matlab - Microsoft Excel. I do not outsource my work; I am a one-man team. Mostly available from 9:00 to 19:00 GMT+2

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10720392
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Mostrando 1 - 5 de 50+ reseñas
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5,0
$2.200,00 USD
Their expertise in math and understanding of the complex concepts involved was evident from the start. He delivered high-quality work that exceeded my expectations. I highly recommend him for any projects.
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Bandera de Ben M.
@benmccarty0
hace 4 meses
5,0
$40,00 USD
A highly recommend and excellent freelancer who understands all requirements and is very professional.
JavaScript
Geospatial
Dthreejs
R Programming Language
Power BI
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Bandera de Faisal S.
@faisalsaihan
hace 9 meses
4,8
€200,00 EUR
Volodymyr is a very professional coder. He completed the project on time and he helped me framing the problem under different perspectives.
Python
Data Visualization
Data Analysis
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Bandera de Andrea G.
@Gila56045
hace 1 año
5,0
$30,00 CAD
It was a really good experience to work with Volodymyr. He provided precise commentaries and the communication was clear.
Data Processing
Statistics
Machine Learning (ML)
R Programming Language
+1 más
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Bandera de Rafael D.
@rafaelalen
hace 2 años
5,0
€76,51 EUR
Great work of Volo for a completely spontanous statistics exercise. He was quick to respond, asked the right questions and started straight away to deliver ahead of time for an additional feedback opportunity. [09 February, 2022] Prof Vlad did an outstanding job on a small but decisive and urgent analysis regarding crucial conflicts of interest statistic work. His input changed the way may people look at sponsorship. Exceptional effort over night. Thank you!
Data Processing
Statistics
Machine Learning (ML)
R Programming Language
+1 más
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Bandera de Hans S.
@hcstier
hace 2 años

Publicaciones

Sliding Mode Control of a solar power plant at weather fluctuated irradiance

INUDECO-18 https://inudeco.pro/en/
Matlab/Simulink model of Sliding Mode Control was built to optimize a solar panel performance at a fluctuating by weather irradiance. This dynamic model shows a high performance relative to the pre-calculated Maximum Power Point Tracker, which may significantly improve the outcome of a solar power plant. Keywords: INUDECO, solar power plant, Matlab, Simulink, Lyapunov function. https://drive.google.com/file/d/16P3qZoqDTXMoJIJqHE9tRfjBaXwg-K2G/view?usp=sharing

Mapping of X-ray contamination. A digital model

INUDECO-18 https://inudeco.pro/en/
This is a digital search and mapping of X-ray sources by means of a stationary set of sensors placed around the contaminated object. The problem was solved by the genetic algorithm. It was shown that in some cases of four and more detectors the X-ray sources may be mapped if their number does not exceed much the number of detectors. Keywords: Gamma-ray imaging, contamination, mapping, genetic algorithm. https://drive.google.com/file/d/1rGCbKTlDlMCLczj20vixVVSs-G6M9M2G/view?usp=sharing

Hidden revolution of human priorities: An analysis of biographical data from Wikipedia

Journal of Informetrics 10(1):124-131 · January 2016
A study of Wikipedia biographical pages is presented. It is shown that the dates of some historical cataclysms may be reproduced from peculiarities of lifespan changes over time. Categories were merged in just two classes. Being quite constant during almost the entire history, its ratio shows a sharp jump at the end of the 20th century mainly due to growth of Sport and Art groups over all others. Available at: http://www.science.smith.edu/dftwiki/images/7/7b/HiddenRevolutionHumanPriorities.pdf

Parsing Wikipedia XML dump

CodeProject, April 2016
Article presents pretty simple parser for "pages-articles" XML dump file, capable of extracting body texts of pages, titles of pages with categories a page belongs, and names of categories with their parent categories. Body texts are not cleaned from markup, in particular because it may contain important information. For each Wikipedia's article page, calculate number of references to it from other pages. Available at: http://www.codeproject.com/Articles/1094987/Parsing-Wikipedia-XML-dump

Hierarchy of categories and classifying Wikipedia articles using XML dump

CodeProject, July 2016
A hierarchical object is built from relationships between categories and their parents. It is used in a classifier, detecting if an article belongs to possibly far parent category. Available at: http://www.codeproject.com/Articles/1100006/Hierarchy-of-categories-and-classifying-Wikipedia

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