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@vladishat
Ukraine旗标 Slavutych, Ukraine
会员,2016年12月4日加入
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vladishat

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Counselor on Data and Computer Sciences, Statistical Analysis, Mathematics, and Physics. Tutor and Researcher on Data Mining, Machine Learning, Mathematics, Physics. Skills: R-programming language, Matlab / Simulink, RapidMiner, Excel in Statistical Analysis, Data Classification, Regression, Clustering, Association Rules. I do not outsource my work, I am a one man team.
$20 USD/hr
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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]

School of the future: smartphones as a laboratory in pocket of each student

The idea to unite student smartphones in a scale-able network and use the network to collect data of personal environmental sensors and health indicators is proposed. Such a monitoring at the global level would reveal the impact of the electromagnetic radiation, environmental pollution and weather factors on human health. Participation in these measurements increases the educational and social activity of students. 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]

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