Institution
The Chinese University of Hong Kong
Education•Hong Kong, China•
About: The Chinese University of Hong Kong is a education organization based out in Hong Kong, China. It is known for research contribution in the topics: Population & Cancer. The organization has 43411 authors who have published 93672 publications receiving 3066651 citations.
Topics: Population, Cancer, Poison control, Randomized controlled trial, China
Papers published on a yearly basis
Papers
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TL;DR: In this article, Fan and Li showed that the nonconcave penalized likelihood has an oracle property when the number of parameters is finite, and the consistency of the sandwich formula of the covariance matrix is demonstrated.
Abstract: A class of variable selection procedures for parametric models via nonconcave penalized likelihood was proposed by Fan and Li to simultaneously estimate parameters and select important variables. They demonstrated that this class of procedures has an oracle property when the number of parameters is finite. However, in most model selection problems the number of parameters should be large and grow with the sample size. In this paper some asymptotic properties of the nonconcave penalized likelihood are established for situations in which the number of parameters tends to ∞ as the sample size increases. Under regularity conditions we have established an oracle property and the asymptotic normality of the penalized likelihood estimators. Furthermore, the consistency of the sandwich formula of the covariance matrix is demonstrated. Nonconcave penalized likelihood ratio statistics are discussed, and their asymptotic distributions under the null hypothesis are obtained by imposing some mild conditions on the penalty functions. The asymptotic results are augmented by a simulation study, and the newly developed methodology is illustrated by an analysis of a court case on the sexual discrimination of salary.
978 citations
Inova Health System1, Inova Fairfax Hospital2, RWTH Aachen University3, Pontifical Catholic University of Chile4, Theodor Bilharz Research Institute5, University of Turin6, The Chinese University of Hong Kong7, Marmara University8, University of Sydney9, Shanghai Jiao Tong University10, Emory University11
TL;DR: The authors in this article examined the state of NAFLD among different regions and understand the global trajectory of this disease, an international group of experts came together during the 2017 American Association for the Study of Liver Diseases Global NASFLD Forum and provided a summary of this forum and an assessment of the current state of NASH worldwide.
978 citations
TL;DR: Li et al. as discussed by the authors found that Chinese state-owned enterprises controlled by province, city, and county governments (local SOEs) are more likely to hire small auditors within the same region (small local auditors).
977 citations
Posted Content•
TL;DR: In this paper, the authors test the free cash flow hypothesis on a sample of large investments made by firms, namely decisions to acquire control of other firms through tender offers, and show that the hypothesis is false.
Abstract: The free cash flow hypothesis advanced by Jensen (1988) states that managers endowed with free cash flow will invest it in negative net present value (NPV) projects rather than pay it out to shareholders. Jensen defines free cash flow as cash flow left after the firm has invested in all available positive NPV projects. In this paper, we test this hypothesis on a sample of large investments made by firms, namely decisions to acquire control of other firms through tender offers.
975 citations
TL;DR: Adolescent idiopathic scoliosis affects 1-3% of children in the at-risk population of those aged 10-16 years and the aetiopathogensis of this disorder remains unknown, with misinformation about its natural history.
970 citations
Authors
Showing all 43993 results
| Name | H-index | Papers | Citations |
|---|---|---|---|
| Michael Marmot | 193 | 1147 | 170338 |
| Jing Wang | 184 | 4046 | 202769 |
| Jiaguo Yu | 178 | 730 | 113300 |
| Yang Yang | 171 | 2644 | 153049 |
| Mark Gerstein | 168 | 751 | 149578 |
| Gang Chen | 167 | 3372 | 149819 |
| Jun Wang | 166 | 1093 | 141621 |
| Jean Louis Vincent | 161 | 1667 | 163721 |
| Wei Zheng | 151 | 1929 | 120209 |
| Rui Zhang | 151 | 2625 | 107917 |
| Ben Zhong Tang | 149 | 2007 | 116294 |
| Kypros H. Nicolaides | 147 | 1302 | 87091 |
| Thomas S. Huang | 146 | 1299 | 101564 |
| Galen D. Stucky | 144 | 958 | 101796 |
| Joseph J.Y. Sung | 142 | 1240 | 92035 |