| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 978031 | Physica A: Statistical Mechanics and its Applications | 2008 | 6 Pages |
Abstract
We investigated the network structures of the Japanese stock market using the minimum spanning tree. We defined a grouping coefficient to test the validity of the conventional grouping by industrial categories, and found a decreasing in trend for the coefficient. This phenomenon supports the increasing external influences on the market due to globalization. To reduce this influence, we used S&P500 index as the international market and removed its correlation with every stock. We found stronger a grouping in this measurement when compared to the original analysis, which agrees with our assumption that the international market influences to the Japanese market.
Related Topics
Physical Sciences and Engineering
Mathematics
Mathematical Physics
Authors
Woo-Sung Jung, Okyu Kwon, Fengzhong Wang, Taisei Kaizoji, Hie-Tae Moon, H. Eugene Stanley,