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Note on Two-Phase Phenomena in Financial Markets

         

摘要

The two-phase behaviour in financial markets actually means the bifurcation phenomenon, which represents the change of the conditional probability from an unimodal to a bimodal distribution. We investigate the bifurcation phenomenon in Hang-Seng index. It is observed that the bifurcation phenomenon in financial index is not universal, but specific under certain conditions. For Hang-Seng index and randomly generated time series, the phenomenon just emerges when the power-law exponent of absolute increment distribution is between i and 2 with appropriate period. Simulations on a randomly generated time series suggest the bifurcation phenomenon itself is subject to the statistics of absolute increment, thus it may not be able to reflect essential financial behaviours. However, even under the same distribution of absolute increment, the range where bifurcation phenomenon occurs is far different from real market to artificial data, which may reflect certain market information.

著录项

  • 来源
    《中国物理快报:英文版》 |2008年第6期|2319-2322|共4页
  • 作者单位

    Department of Electronic Science and Technology, University of Science and Technology of China, Hefei 230026;

    Department of Electronic Science and Technology, University of Science and Technology of China, Hefei 230026;

    Department of Electronic Science and Technology, University of Science and Technology of China, Hefei 230026;

    Department of Modern Physics, University of Science and Technology of China, Hefei 230026;

    Department of Physics, University of Fribourg, Chemin du Muse 3,CH-1700 Fribourg,Switzerland;

    Department of Electronic Science and Technology, University of Science and Technology of China, Hefei 230026;

  • 原文格式 PDF
  • 正文语种 chi
  • 中图分类 物理学;
  • 关键词

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