Search Results for author: Wei-Xing Zhou

Found 13 papers, 1 papers with code

The impact of geopolitical risk on the international agricultural market: Empirical analysis based on the GJR-GARCH-MIDAS model

no code implementations2 Apr 2024 Yun-Shi Dai, Peng-Fei Dai, Wei-Xing Zhou

The findings indicate that modeling based on rolling window performs better in describing the overall volatility of the wheat, maize, soybean, and rice markets, and the two-factor models generally exhibit stronger explanatory power in most cases.

Uncovering the Sino-US dynamic risk spillovers effects: Evidence from agricultural futures markets

no code implementations4 Mar 2024 Han-Yu Zhu, Peng-Fei Dai, Wei-Xing Zhou

Based on these results, decision-makers are advised to safeguard against the price risk of agricultural futures under sudden economic events, and investors can utilize the results to construct a superior investment portfolio by taking different agricultural product futures as risk-leading indicators according to various situations.

The impact of the Russia-Ukraine conflict on the extreme risk spillovers between agricultural futures and spots

no code implementations24 Oct 2023 Wei-Xing Zhou, Yun-Shi Dai, Kiet Tuan Duong, Peng-Fei Dai

The ongoing Russia-Ukraine conflict between two major agricultural powers has posed significant threats and challenges to the global food system and world food security.

Correlation structure analysis of the global agricultural futures market

no code implementations24 Oct 2023 Yun-Shi Dai, Ngoc Quang Anh Huynh, Qing-Huan Zheng, Wei-Xing Zhou

This paper adopts the random matrix theory (RMT) to analyze the correlation structure of the global agricultural futures market from 2000 to 2020.

Testing for intrinsic multifractality in the global grain spot market indices: A multifractal detrended fluctuation analysis

no code implementations18 Jun 2023 Li Wang, Xing-Lu Gao, Wei-Xing Zhou

Extensive statistical tests confirm the presence of intrinsic multifractality in the maize and barley sub-indices and the absence of intrinsic multifractality in the wheat and rice sub-indices.

Visibility graph analysis of the grains and oilseeds indices

no code implementations12 Apr 2023 Hao-Ran Liu, Wei-Xing Zhou

The average clustering coefficients of the six VGs are quite large (>0. 5) and exhibit a nice power-law relation with respect to the average degrees of the VGs.

Clustering

Tail dependence structure and extreme risk spillover effects between the international agricultural futures and spot markets

no code implementations20 Mar 2023 Yun-Shi Dai, Peng-Fei Dai, Wei-Xing Zhou

This paper combines the Copula-CoVaR approach with the ARMA-GARCH-skewed Student-t model to investigate the tail dependence structure and extreme risk spillover effects between the international agricultural futures and spot markets, taking four main agricultural commodities, namely soybean, maize, wheat, and rice as examples.

Management Portfolio Optimization

Hierarchical contagions in the interdependent financial network

no code implementations27 Jun 2021 William A. Barnett, Xue Wang, Hai-Chuan Xu, Wei-Xing Zhou

We derive the default cascade model and the fire-sale spillover model in a unified interdependent framework.

Management

How does economic policy uncertainty comove with stock markets: New evidence from symmetric thermal optimal path method

no code implementations8 Jun 2021 Ying-Hui Shao, Yan-Hong Yang, Wei-Xing Zhou

We revisit the dynamic relationship between domestic economic policy uncertainty and stock markets using the symmetric thermal optimal path (TOPS) method.

The role of global economic policy uncertainty in predicting crude oil futures volatility: Evidence from a two-factor GARCH-MIDAS model

no code implementations25 Jul 2020 Peng-Fei Dai, Xiong Xiong, Wei-Xing Zhou

For single-factor models, the GEPU index and its changes, as well as realized volatility, are consistent effective factors in predicting the volatility of crude oil futures.

Horse race of weekly idiosyncratic momentum strategies with respect to various risk metrics: Evidence from the Chinese stock market

no code implementations29 Oct 2019 Huai-Long Shi, Wei-Xing Zhou

Using the A-share individual stocks in the Chinese market from January 1997 to December 2017, we first evaluate the performance of the weekly momentum based on raw returns and idiosyncratic returns, respectively.

Generalized q-Analysis of Log-Periodicity: Applications to Critical Ruptures

1 code implementation25 Jan 2002 Wei-Xing Zhou, Didier Sornette

We use this generalized q-analysis to construct a signature called the (H, q)-derivative of discrete scale invariance, which we use to detect the log-periodicity in the energy release rate and its cumulative preceding the rupture of five pressure tanks made of composite carbon-matrix material.

Statistical Mechanics

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