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Weidong Liu
Researcher at Chinese Academy of Sciences
Publications - 300
Citations - 12257
Weidong Liu is an academic researcher from Chinese Academy of Sciences. The author has contributed to research in topics: China & Estimator. The author has an hindex of 46, co-authored 275 publications receiving 9746 citations. Previous affiliations of Weidong Liu include China Meteorological Administration & Nanjing University of Aeronautics and Astronautics.
Papers
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A Constrained ℓ1 Minimization Approach to Sparse Precision Matrix Estimation
T. Tony Cai,Weidong Liu,Xi Luo +2 more
TL;DR: A constrained ℓ1 minimization method for estimating a sparse inverse covariance matrix based on a sample of n iid p-variate random variables and is applied to analyze a breast cancer dataset and is found to perform favorably compared with existing methods.
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A Constrained L1 Minimization Approach to Sparse Precision Matrix Estimation
T. Tony Cai,Weidong Liu,Xi Luo +2 more
TL;DR: In this article, a constrained L1 minimization method is proposed for estimating a sparse inverse covariance matrix based on a sample of $n$ iid $p$-variate random variables.
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Adaptive Thresholding for Sparse Covariance Matrix Estimation
T. Tony Cai,Weidong Liu +1 more
TL;DR: In this paper, a thresholding procedure that is adaptive to the variability of individual entries is proposed, which achieves the optimal rate of convergence over a large class of sparse covariance matrices under the spectral norm.
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Outsourcing CO2 within China
Kuishuang Feng,Steven J. Davis,Laixiang Sun,Laixiang Sun,Xin Li,Dabo Guan,Dabo Guan,Dabo Guan,Weidong Liu,Zhu Liu,Klaus Hubacek +10 more
TL;DR: It is found that 57% of China’s emissions are related to goods that are consumed outside of the province where they are produced, and consumption-based accounting of emissions can inform effective and equitable climate policy within China.
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The Global Pattern of Urbanization and Economic Growth: Evidence from the Last Three Decades
TL;DR: It is concluded that a given country cannot obtain the expected economic benefits from accelerated urbanization, especially if it takes the form of government-led urbanization.