Search Results for author: Yanyan Zheng

Found 2 papers, 0 papers with code

Precision measurement of the return distribution property of the Chinese stock market index

no code implementations18 Sep 2022 Peng Liu, Yanyan Zheng

(2) The central part of return distribution is well described by the symmetrical L\'{e}vy $\alpha$-stable process with a stability parameter comparable with the value of about 1. 4 extracted in the U. S. stock market.

Temporal and spatial evolution of the distribution related to the number of COVID-19 pandemic

no code implementations8 Apr 2022 Peng Liu, Yanyan Zheng

(1) The distributions of the numbers for cumulative confirmed cases and deaths obey power-law in early stages of COVID-19 and stretched exponential function in subsequent course.

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