Stability of China's Stock Market: Measure and Forecast by Ricci Curvature on Network

no code implementations • 14 Apr 2022 • Xinyu Wang, Liang Zhao, Ning Zhang, Liu Feng, Haibo Lin

As far as we know, this is the first paper to apply Ricci curvature to forecast the systemic stability of domestic stock market, and our results show that Ricci curvature has good explanatory power for the market stability and can be a good indicator to judge the future risk and volatility of the domestic market.

Time Series Time Series Analysis

An Adjustable Heat Conduction based KNN Approach for Session-based Recommendation

no code implementations • 16 Jul 2018 • Guo Huifeng, Tang Ruiming, Ye Yunming, Liu Feng, Zhang Yuzhou

However, it neglects the co-occurrence information of items in the historical behavior which is interacted earlier and cannot discriminate the impact of items and sessions with different popularity.

Session-Based Recommendations

Novel Approaches to Accelerating the Convergence Rate of Markov Decision Process for Search Result Diversification

no code implementations • 23 Feb 2018 • Liu Feng, Tang Ruiming, Li Xutao, Ye Yunming, Guo Huifeng, He Xiuqiang

Recently, some studies have utilized the Markov Decision Process for diversifying (MDP-DIV) the search results in information retrieval.

Decision Making Information Retrieval +1