TEN years ago the notion that Chinese contemporary art could so much as raise a flicker of interest in foreign climes - never mind drive Western cultural pundits into a delirious frenzy - would have been dismissed a...TEN years ago the notion that Chinese contemporary art could so much as raise a flicker of interest in foreign climes - never mind drive Western cultural pundits into a delirious frenzy - would have been dismissed as pure fancy. At that time Chinese art was assumed to be nothing more than classical calligraphy,展开更多
Precision matrix estimation is an important problem in statistical data analysis.This paper proposes a sparse precision matrix estimation approach,based on CLIME estimator and an efficient algorithm GISSP that was ori...Precision matrix estimation is an important problem in statistical data analysis.This paper proposes a sparse precision matrix estimation approach,based on CLIME estimator and an efficient algorithm GISSP that was originally proposed for li sparse signal recovery in compressed sensing.The asymptotic convergence rate for sparse precision matrix estimation is analyzed with respect to the new stopping criteria of the proposed GISSP algorithm.Finally,numerical comparison of GISSP with other sparse recovery algorithms,such as ADMM and HTP in three settings of precision matrix estimation is provided and the numerical results show the advantages of the proposed algorithm.展开更多
文摘TEN years ago the notion that Chinese contemporary art could so much as raise a flicker of interest in foreign climes - never mind drive Western cultural pundits into a delirious frenzy - would have been dismissed as pure fancy. At that time Chinese art was assumed to be nothing more than classical calligraphy,
基金This work was supported by National key research and development program(No.2017YFB0202902)NSFC(No.11771288,No.12090024).
文摘Precision matrix estimation is an important problem in statistical data analysis.This paper proposes a sparse precision matrix estimation approach,based on CLIME estimator and an efficient algorithm GISSP that was originally proposed for li sparse signal recovery in compressed sensing.The asymptotic convergence rate for sparse precision matrix estimation is analyzed with respect to the new stopping criteria of the proposed GISSP algorithm.Finally,numerical comparison of GISSP with other sparse recovery algorithms,such as ADMM and HTP in three settings of precision matrix estimation is provided and the numerical results show the advantages of the proposed algorithm.
