Explaining Dynamic Changes in Various Asset’s Relationships in Financial Markets

Makoto Naraoka (), Teruaki Hayashi (), Takaaki Yoshino (), Toshiaki Sugie (), Kota Takano () and Yukio Ohsawa ()
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Makoto Naraoka: The University of Tokyo
Teruaki Hayashi: The University of Tokyo
Takaaki Yoshino: Nissay Asset Management Corp.
Toshiaki Sugie: Nissay Asset Management Corp.
Kota Takano: Nissay Asset Management Corp.
Yukio Ohsawa: The University of Tokyo

The Review of Socionetwork Strategies, 2021, vol. 15, issue 2, 597-611

Abstract: Abstract We study the method for detecting relationship changes in financial markets and providing human-interpretable network visualization to support the decision-making of fund managers dealing with multi-assets. First, we construct co-occurrence networks with each asset as a node and a pair with a strong relationship in price change as an edge at each time step. Second, we calculate Graph-Based Entropy to represent the variety of price changes based on the network. Third, we apply the Differential Network to finance, which is traditionally used in the field of bioinformatics. By the method described above, we can visualize when and what kind of changes are occurring in the financial market, and which assets play a central role in changes in financial markets. Experiments with multi-asset time-series data showed results that were well fit with actual events while maintaining high interpretability. It is suggested that this approach is useful for fund managers to use as a new option for decision-making.

Keywords: Data mining; Making decisions; Change explanation; Financial market (search for similar items in EconPapers)
Date: 2021
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DOI: 10.1007/s12626-021-00094-5

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