Match!
Yongjia Xie
Chinese Academy of Sciences
5Publications
4H-index
27Citations
Publications 5
Newest
#1Jianping LiXiaolei (CAS: Chinese Academy of Sciences)H-Index: 19
#2Yongjia Xie (CAS: Chinese Academy of Sciences)H-Index: 4
Last.Yuanping Chen (CAS: Chinese Academy of Sciences)H-Index: 1
view all 4 authors...
Research funding is a significant support for the development of scientific research. The inequality of research funding is an intrinsic feature of science, and policy makers have realized the over-concentration of funding allocation. Previous studies have tried to use the Gini coefficient to measure this inequality; however, the phenomena of multiple funding sources and funding subdivision have not been deeply discussed and empirically studied due to limitations on data availability. This paper...
#1Yongjia Xie (CAS: Chinese Academy of Sciences)H-Index: 2
#2Dengsheng Wu (CAS: Chinese Academy of Sciences)H-Index: 10
Last.Jianping LiXiaolei (CAS: Chinese Academy of Sciences)H-Index: 19
view all 5 authors...
It has been worthy of notice that the number of scientific researchers has experienced a rapid growth in China. Meanwhile, the strict restriction to the total number and the position structure of researchers has exerted great pressure on the Chinese researchers. The decision makers have noticed this dilemma and a quantitative predicting result for decision support is in need. This paper puts forward a data-driven dynamic programming model to estimate the research position demand gap based on the...
Scholars from Mainland China have published 8541 papers in 79 Operations Research and Management Science (OR/MS) journals available on the ISI Web of Science (WOS). Data from 2001 to 2013 constitute the basis of the bibliometric method used in this paper for statistical analysis of status of OR/MS research in Mainland China, from the perspectives of number of papers, quality of papers, most productive institutions, co-author analysis, citations analysis and research topic analysis, etc. The resu...
#1Xiaoqian Zhu (CAS: Chinese Academy of Sciences)H-Index: 7
#2Yongjia Xie (CAS: Chinese Academy of Sciences)H-Index: 4
Last.Dengsheng Wu (CAS: Chinese Academy of Sciences)H-Index: 10
view all 4 authors...
The subprime crisis has received great attention in academic research but there is no consensus on when the crisis started and when it ended. Previous researchers have only mentioned their subjective judgments in related papers and well-accepted change point detection methods are not available. So the objective of this paper is to propose a multiple change point detection approach from the perspective of risk dependence by using copula function. Since the inter-dependence of different types of r...
#1Jianping LiXiaoleiH-Index: 19
#2Xiaoqian ZhuH-Index: 7
Last.Wujiang ShiH-Index: 1
view all 7 authors...
Most advanced measurement approaches cannot simultaneously capture the overall dependence between operational risk components and be easy to use and understand. This paper proposes a mutual-information-based variance–covariance approach that is able to capture the overall correlation and is also highly tractable. Specifically, we replace the linear correlation coefficient with the global correlation coefficient in the framework of the variance–covariance approach. Originating from the theory of ...
It is generally accepted that the choice of severity distribution in loss distribution approach has a significant effect on the operational risk capital estimation. However, the usually used parametric approaches with predefined distribution assumption might be not able to fit the severity distribution accurately. The objective of this paper is to propose a nonparametric operational risk modeling approach based on Cornish-Fisher expansion. In this approach, the samples of severity are generated ...
1