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Keqi Tan

As seen in: Nature, Journal of Risk
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Articles

Monitoring coseismic and post-seismic changes in site response associated with the 2011 Mw 9.0 Tohoku-Oki earthquake

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By Xingfu Deng, Hao Zhang, Keqi Tan, Shunli Zhang, Qiao Wang, Wei Lu, Yu Miao
| Nature Verified
Abstract It is well known that site response exhibits time-varying nonlinearity under the effect of strong ground motion. By applying the spectral ratio to the KiK-net strong-motion data, the coseismic and post-seismic changes in site response are investigated associated with the 2011 Mw 9.0 Tohoku-Oki earthquake in northern Honshu Island of Japan.
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Modeling maxima with a regime-switching Fréchet model

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By Yu Chen, Keqi Tan, Pengzhan Chen
| Journal of Risk Verified
A regime-switching Fréchet model is proposed for identifying the behavior of extreme values. The model parameters are easy to estimate using the maximum likelihood method. The proposed model offers greater accuracy compared with the static GEV model. Identifying the behavior of extreme values in financial series is known to be complicated by the changing returns in different periods.
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Modeling maxima with a regime-switching Fréchet model

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By Keqi Tan, Yu Chen, Pengzhan Chen
| Journal of Risk Verified
Tweet Facebook LinkedIn Save this article Send to Print this page A regime-switching Fréchet model is proposed for identifying the behavior of extreme values. The model parameters are easy to estimate using the maximum likelihood method. The proposed model offers greater accuracy compared with the static GEV model.
Open in Who Shared Issue with article?
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