Chi Xie
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View article: A novel method for subway wheelset tread defect detection with improved self-attention and loss function
A novel method for subway wheelset tread defect detection with improved self-attention and loss function Open
Wheelsets are crucial components of subway locomotives, and defects on their tread surfaces pose significant safety risks. This study presents an enhanced defect detection algorithm based on the YOLOv5 model, specifically designed to ident…
View article: AndesVL Technical Report: An Efficient Mobile-side Multimodal Large Language Model
AndesVL Technical Report: An Efficient Mobile-side Multimodal Large Language Model Open
In recent years, while cloud-based MLLMs such as QwenVL, InternVL, GPT-4o, Gemini, and Claude Sonnet have demonstrated outstanding performance with enormous model sizes reaching hundreds of billions of parameters, they significantly surpas…
View article: The Impact of Environmental Pollution Liability Insurance on Firms’ Green Total Factor Productivity: Evidence from China
The Impact of Environmental Pollution Liability Insurance on Firms’ Green Total Factor Productivity: Evidence from China Open
Improving green total factor productivity (GTFP) is crucial for firms to enhance competitiveness and sustainable development capacity. Environmental pollution liability insurance (EPLI) facilitates firms better manage environmental risks a…
View article: A Dynamic Synchronous Interactive Functional Validation Approach for Electric Vehicles
A Dynamic Synchronous Interactive Functional Validation Approach for Electric Vehicles Open
International audience
View article: Connectedness of International Stock Market at Major Public Events: Empirical Study via Dynamic Time Warping-Based Network
Connectedness of International Stock Market at Major Public Events: Empirical Study via Dynamic Time Warping-Based Network Open
Several public events have drawn renewed attention to the connectedness of the international stock market since the financial crisis of 2008. We investigate systemic and regional connectedness among stock markets around the world at major …
View article: Transmission effect of extreme risks in China's financial sectors at major emergencies: Empirical study based on the GPD-CAViaR and TVP-SV-VAR approach
Transmission effect of extreme risks in China's financial sectors at major emergencies: Empirical study based on the GPD-CAViaR and TVP-SV-VAR approach Open
Major emergencies cause massive financial risk and economic loss. In the context of major emergencies, we propose the GPD-CAViaR model to depict the extreme risks of financial sectors, and utilize the TVP-SV-VAR model to analyze their tra…
View article: Is bitcoin a safe haven or a hedging asset? Evidence from China
Is bitcoin a safe haven or a hedging asset? Evidence from China Open
Based on daily data about Bitcoin and six other major financial assets (stocks, commodity futures (commodities), gold, foreign exchange (FX), monetary assets, and bonds) in China from 2013 to 2017, we use a VAR-GARCH-BEKK model to investig…
View article: Short term prediction of extreme returns based on the recurrence interval analysis
Short term prediction of extreme returns based on the recurrence interval analysis Open
Being able to predict the occurrence of extreme returns is important in financial risk management. Using the distribution of recurrence intervals—the waiting time between consecutive extremes—we show that these extreme returns are predicta…
View article: Investigating the Disparities of China’s Insurance Market Based on Minimum Spanning Tree from the Viewpoint of Geography and Enterprise
Investigating the Disparities of China’s Insurance Market Based on Minimum Spanning Tree from the Viewpoint of Geography and Enterprise Open
In this paper, we investigate the disparities of China’s insurance market from the viewpoint of geography and enterprise by using the monthly data from January 2006 to December 2015. We divide the whole insurance market into two parts, nam…
View article: Does Online Investor Sentiment Affect the Asset Price Movement? Evidence from the Chinese Stock Market
Does Online Investor Sentiment Affect the Asset Price Movement? Evidence from the Chinese Stock Market Open
With the quick development of the Internet, online platforms that provide financial news and opinions have attracted more and more attention from investors. The question whether investor sentiment expressed on the Internet platforms has an…
View article: Short term prediction of extreme returns based on the recurrence interval analysis
Short term prediction of extreme returns based on the recurrence interval analysis Open
Being able to predict the occurrence of extreme returns is important in financial risk management. Using the distribution of recurrence intervals---the waiting time between consecutive extremes---we show that these extreme returns are pred…
View article: Predicting China’s SME Credit Risk in Supply Chain Finance Based on Machine Learning Methods
Predicting China’s SME Credit Risk in Supply Chain Finance Based on Machine Learning Methods Open
We propose a new integrated ensemble machine learning (ML) method, i.e., RS-RAB (Random Subspace-Real AdaBoost), for predicting the credit risk of China’s small and medium-sized enterprise (SME) in supply chain finance (SCF). The sample of…
View article: Predicting China’s SME Credit Risk in Supply Chain Financing by Logistic Regression, Artificial Neural Network and Hybrid Models
Predicting China’s SME Credit Risk in Supply Chain Financing by Logistic Regression, Artificial Neural Network and Hybrid Models Open
Based on logistic regression (LR) and artificial neural network (ANN) methods, we construct an LR model, an ANN model and three types of a two-stage hybrid model. The two-stage hybrid model is integrated by the LR and ANN approaches. We pr…
View article: The Stability of Interbank Market Network: A Perspective on Contagion and Risk Sharing
The Stability of Interbank Market Network: A Perspective on Contagion and Risk Sharing Open
As an important part of the financial system, interbank market provides banks with liquidity and credit lending and also is the main channel for risk contagion. In this paper, we test the existence of systematic risk contagion within the C…
View article: Competition, Innovation, Risk‐Taking, and Profitability in the Chinese Banking Sector: An Empirical Analysis Based on Structural Equation Modeling
Competition, Innovation, Risk‐Taking, and Profitability in the Chinese Banking Sector: An Empirical Analysis Based on Structural Equation Modeling Open
We introduce a new perspective to systematically investigate the cause‐and‐effect relationships among competition, innovation, risk‐taking, and profitability in the Chinese banking industry. Our hypotheses are tested by the structural equa…
View article: The Market Reaction to Food and Drug Safety Incidents of Listed Companies
The Market Reaction to Food and Drug Safety Incidents of Listed Companies Open
In recent years, food and drug safety incidents of listed companies frequently occur.These incidents were not only bring threat to the life safety of consumers and cause the panic of the society, but also cause disastrous loss to involved …