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Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Estimating Factor-Based Spot Volatility Matrices with Noisy and Asynchronous High-Frequency Data
噪声 异步高频 数据估算 因子 现货波动率 矩阵
2023/5/4
With noisy and asynchronous high-frequency data collected for an ultra-large number of assets, we estimate high-dimensional spot volatility matrices satisfying a low-rank plus sparse structure. A loca...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Variable selection for generalized linear models with interval-censored failure time data
区间删失 失效时间数据 广义线性模型 变量选择
2023/5/9
Variable selection is often needed in many fields and has been discussed by many authors in various situations.
Estimation and goodness-of-fit for the Cox model with various types of censored data
Bivariate right censored data Bivariate data under univariate right censoring Bootstrap Doubly censored data Empirical likelihood Goodness-of-fit Partly interval-censored data
2015/12/11
The currently existing estimation methods and goodness-of-fit tests for the Cox model mainly deal with right censored data, but they do not have direct extension to other complicated types of censored...
L-estimators and m-estimators for doubly censored data
Asymptotic normality asymptotic variance Fredholm integral equation Hadamard differentiability self-consistent estimator strong consistency
2015/12/11
Motivated by estimation and testing with doubly censored data, we study (robust) Lestimators and M-estimators based on such data. These estimators are given through functionals of the self-consistent ...
Fitting Longitudinal Data with Hierarchical Generalized Linear Models
H-likelihood L-N estimators Poisson-Gamma models
2015/3/18
We propose a class of hierarchical generalized linear models (HGLMs) with random dispersions in this paper, and focus on the properties of the L-N estimators for the fixed
effect β in the extended Po...
Lagrangian Averaged Navier-Stokes equations with rough data in Sobolev space
Lagrangian Averaged Navier-Stokes equations rough data in Sobolev space
2010/11/15
We prove the existence of short time, low regularity solutions to the incompressible, isotropic Lagrangian Averaged Navier-Stokes equations with initial data in Sobolev spaces. In the special case of...
On Compression of Data Encrypted with Block Ciphers
ompression of Data Encrypted Block Ciphers
2010/12/2
This paper investigates compression of data encrypted with block ciphers, such as the Advanced
Encryption Standard (AES). It is shown that such data can be feasibly compressed without knowledge of th...
期刊信息
篇名
A cross-associative neural network for SVD of nonsquared data matrix in signal processing
语种
英文
撰写或编译
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作者
Da-Zheng Feng,Zheng Bao and Xian-Da Zhang
第一作者单位
西安电子科技大学
刊物名称
IEEE Trans. Neural Ne...
期刊信息
篇名
A cross-associative neural network used as SVD of non-square data matrix or cross-correlation matrix in signal processing
语种
英文
撰写或编译
撰写
作者
Da-Zheng Feng,Hai-Qin Zhang,Xian-Da Zhang,and Zheng ...