Изображение профиля vladishat
@vladishat
Флаг Ukraine Slavutych, Ukraine
На сайте с 4 декабря 2016 г.
2 Рекомендации

vladishat

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My main areas of expertise are: - Data Mining, Machine Learning, Natural Language Processing, Knowledge extraction; - Statistics, Mathematics and Physics; - R-coding, RapidMiner, Matlab, MS Access, MS Excel, C#. I used to teach students the basics of Artificial Intelligence (Data Mining and Machine Learning), the basics of Computer Science, as well as Statistics, Physics and Mathematics. I do not outsource my work, I am a one man team. Mostly available from 8 a.m. to 8 p.m. local time.
$25 USD/hr
46 отзыва(-ов)
5.5
  • 100%Выполненные работы
  • 97%В рамках бюджета
  • 99%Своевременность
  • 26%Рейтинг повторного найма

Портфолио

Последние отзывы

  • изображение Fajer A. Project for Volodymyr S. $150.00 USD

    “I recommend him strongly. He is expert”

  • изображение Fajer A. Non linear regression curve fit $164.00 USD

    “Volodymy is very expert in field of non linear regression. I recommend him strongly”

  • изображение Xssx A. Project for Volodymyr S. £120.00 GBP

    “Brilliant freelancer.”

  • изображение Bogdan M. Project for Volodymyr S. $150.00 USD

    “great data analyst”

  • изображение Pritpal T. Data Mining project $50.00 USD

    “He is very flexible.”

  • изображение Tim J. Project for Volodymyr S. -- 8 $459.71 USD

    “Great, it is hard to communicate exact specification. That's the nature of this work and on me though. Great work! [05 December, 2018] Thanks, I know there was some confusion but we got it figured out.”

Опыт работы

Professor

Sep 2015 - Aug 2018 (2 years)

Lectures on Artificial Intelligence, Data Mining, Decision Theory, Theory of Algorithms. Researches on Natural Language Processing; Knowledge extraction from Wikipedia; Statistical study on Historical Demography.

Professor

Sep 1999 - Aug 2015 (15 years)

Lectures on Biophysics, Information Technologies. Researches on Theory of the biological impact of low electromagnetic fields, Bubbles induced effects of blood degassing in vitro, Molecular structure and dynamics of air/water interface.

Professor

Sep 1998 - Aug 2005 (6 years)

Lectures on Mathematics, Information Technologies, Data Mining. Researches on Mathematical Modelling and Decision Theory.

Образование

D.Sci.

1988 - 1991 (3 years)

Публикации

Hierarchy of categories and classifying Wikipedia articles using XML dump

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: [login to view URL]

Parsing Wikipedia XML dump

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: [login to view URL]

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

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: [login to view URL]

Mapping of X-ray contamination. A digital model

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. [login to view URL]

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

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. [login to view URL]

Сертификаты

  • Preferred Freelancer Program SLA
    100%
  • US English Level 1
    85%

Верификации

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  • Личность подтверждена
  • Электронный адрес подтвержден

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