منابع مشابه
Mining Associations on the Warsaw Stock Exchange
Identi cation of patterns in stock markets has been an important subject for many years. In the past, numerous techniques, both technical and econometric, were used to predict changes in stock markets, but dependences among all the companies listed on a stock market were considered in a limited extent. Numerous studies con rm that larger stocks items appear to in uence smaller ones and that, on...
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A very important research topic is describing the way in which different asset price movements are correlated. Modern portfolio theory methods are based on observed correlations between returns at daily or larger time scales. One expects that coarse scale correlations originate from intraday movements that are strongly correlated. This implies the important question of how to obtain better esti...
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A popular method for network analysis of financial markets is a notable part of econophysics research. The networks created in such efforts are focused exclusively on linear correlations between stocks. While Pearson’s correlation is the obvious starting point, it would be useful to look at its alternatives as to whether they provide improvements to this methodology, particularly given Pearson’...
متن کاملFLUCTUATIONS OF WIGthe index of Warsaw Stock Exchange. Preliminary studies ∗
A time series that represents daily values of the WIG index (the main index of Warsaw Stock Exchange) over last 5 years is examined. Non-Gaussian features of distributions of fluctuations, namely returns, over a time scale are considered. Some general properties like exponents of the long range correlation estimated by averaged volatility and detrended fluctuations analysis (DFA) as well as exp...
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ژورنال
عنوان ژورنال: Annales Universitatis Mariae Curie-Skłodowska, sectio H, Oeconomia
سال: 2015
ISSN: 0459-9586
DOI: 10.17951/h.2015.49.4.291